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check_dmarccheckerapp
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#!/usr/bin/env python3
#-------------------------------------------------------------------------------
import os
import sys
import time
import subprocess
import argparse
import datetime
import smtplib
import time
from email.mime.text import MIMEText
from selenium import webdriver
from selenium.webdriver.common.keys import Keys
from selenium.webdriver.chrome.options import Options
from selenium.webdriver import ActionChains
from selenium.webdriver.common.by import By
from selenium.webdriver.support.ui import WebDriverWait
from selenium.webdriver.support import expected_conditions as EC
#-------------------------------------------------------------------------------
_candebug = False
def candebug():
global _candebug
return _candebug
def setcandebug(value):
global _candebug
_candebug = value
def infomsg(msg):
if candebug() == True:
print(msg, flush=True)
def exitnagios(status,message):
if status=="OK":
exitcode = 0
elif status=="WARNING":
exitcode = 1
elif status=="CRITICAL":
exitcode = 2
elif status=="UNKNOWN":
exitcode = 3
else:
exitcode = 4
print(status+": "+message, flush=True)
sys.exit(exitcode)
#-------------------------------------------------------------------------------
def generatedriver(proxy):
chrome_options = Options()
chrome_options.add_argument("--incognito")
chrome_options.add_argument("--disk-cache-size=0")
chrome_options.add_argument("--media-cache-size=0")
chrome_options.add_argument("--enable-features=EphemeralGuestProfilesOnStartup")
chrome_options.add_argument("--headless=new")
chrome_options.add_argument("--disable-gpu")
chrome_options.add_argument("--no-sandbox")
chrome_options.add_argument("--disable-dev-shm-usage")
chrome_options.add_argument("--in-process-gpu")
chrome_options.add_argument("--use-gl=angle")
chrome_options.add_argument("--use-angle=swiftshader-webgl")
chrome_options.add_argument("--proxy-server="+proxy)
chrome_service = webdriver.ChromeService(executable_path="/usr/bin/chromedriver")
driver = webdriver.Chrome(options=chrome_options,service=chrome_service)
#driver.implicitly_Wait(10, TimeUnit.SECONDS)
return driver
def check_page_loaded(driver):
#self.log.info("Checking if {} page is loaded.".format(self.driver.current_url))
page_state = driver.execute_script("return document.readyState;")
return page_state == "complete"
def wait_page_loaded(driver):
timestamp = time.time()
while True:
if check_page_loaded(driver) == True:
break
if time.time() - timestamp > 20:
break
#-------------------------------------------------------------------------------
def tryfindbyxpath(driver,xpath):
result = []
try:
result = driver.find_elements(By.XPATH, xpath)
except:
pass
return result
def tryfindbyid(driver,idname):
result = []
try:
result = driver.find_elements(By.ID, idname)
except:
pass
return result
def tryfindbyclassname(driver,classname):
result = []
try:
result = driver.find_elements(By.CLASS_NAME, classname)
except:
pass
return result
def tryfindbytagname(driver,tagname):
result = []
try:
result = driver.find_elements(By.TAG_NAME, tagname)
except:
pass
return result
#-------------------------------------------------------------------------------
def dodnssecverisigncall(mailfrom,tolerate,proxy):
try:
driver = generatedriver(proxy)
wait = WebDriverWait(driver,20)
action=ActionChains(driver)
# OTHER ALTERNATIVES, BUT DO NOT CHECK DMARC
# https://dkimvalidator.com/
# https://dmarcchecker.app/
# https://www.mailreach.co/dkim-checker
# https://wander.science/projects/email/dkimtest/
infomsg("browser OK")
url = "https://dmarcchecker.app"
driver.get(url)
infomsg("asking for navigating "+url)
time.sleep(2)
wait_page_loaded(driver)
infomsg("page loaded")
infomsg("waiting for element")
wait.until(EC.presence_of_element_located((By.ID, "email-address")))
infomsg("finding base element")
elements = tryfindbyxpath(driver,".//*[@id='email-address']//a")
if len(elements)==0:
exitnagios("CRITICAL","no result from page")
infomsg("extracting email")
targetemail = elements[0].text
me = mailfrom
dummystring = "TEST email to "+url+" at "+datetime.datetime.now(datetime.UTC).isoformat()
email_body = dummystring
email_message = MIMEText(email_body)
email_message["Subject"] = dummystring
email_message["From"] = me
email_message["To"] = targetemail
email_message["User-Agent"] = "Mozilla/5.0 (Windows NT 10.0; WOW64; rv:102.0) Gecko/20100101 Thunderbird/102.0"
infomsg("sending email to "+targetemail)
s = smtplib.SMTP("localhost")
s.sendmail(me, [targetemail], email_message.as_string())
s.quit()
time.sleep(5)
infomsg("waiting for element")
start_time = time.time()
max_duration = 180
retry_interval = 5
gotanswer = False
while time.time() - start_time < max_duration:
founddetails = tryfindbyclassname(driver,"report-details-table")
if len(founddetails)>0:
infomsg("found details!")
gotanswer = True
break
else:
foundcheck = tryfindbyid(driver,"check-status")
if len(foundcheck)>0:
infomsg("the check status is "+foundcheck[0].text)
infomsg("extra wait for mail arrival")
time.sleep(retry_interval)
if gotanswer==False:
exitnagios("CRITICAL","could not find answer from remote website")
else:
infomsg("extracting errors")
errors = tryfindbyclassname(driver,"error")
infomsg(len(errors))
countError = 0
for item in errors:
words = item.text.split()
infomsg(words)
if len(words)==2:
partial=None
try:
partial = int(words[0])
except:
pass
if partial!=None:
countError=countError+partial
infomsg("extracting warns")
warns = tryfindbyclassname(driver,"warn")
infomsg(len(warns))
countWarning = 0
for item in warns:
words = item.text.split()
infomsg(words)
if len(words)==2:
partial=None
try:
partial = int(words[0])
except:
pass
if partial!=None:
countWarning=countWarning+partial
if countError>0:
exitnagios("CRITICAL","There are errors for "+mailfrom+" | warnings="+str(countWarning)+" errors="+str(countError))
elif countWarning>tolerate:
exitnagios("WARNING","There are warnings for "+mailfrom+" | warnings="+str(countWarning)+" errors="+str(countError))
else:
exitnagios("OK","No issues found for "+mailfrom+" | warnings="+str(countWarning)+" errors="+str(countError))
except Exception as e:
exitnagios("CRITICAL","unexpected error during the check - "+str(e))
#-------------------------------------------------------------------------------
def main():
parser = argparse.ArgumentParser()
parser.add_argument("-f", "--mailfrom", dest="mailfrom", default="root@localhost", help="email to test")
parser.add_argument("-l", "--tolerate", dest="tolerate", default="0", help="number of warnings to tolerate")
parser.add_argument("-®", "--debug", action="store_true", dest="debug", default=False, help="be more verbose")
args = parser.parse_args()
setcandebug(args.debug)
proxy = ""
tolerate = int(args.tolerate)
dodnssecverisigncall(args.mailfrom,tolerate,proxy)
if __name__ == "__main__":
main()
#-------------------------------------------------------------------------------