mirror of
https://github.com/jokob-sk/NetAlertX.git
synced 2025-12-07 01:26:11 -08:00
212 lines
9.4 KiB
Python
Executable File
212 lines
9.4 KiB
Python
Executable File
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import subprocess
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import conf
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from const import logPath, sql_nmap_scan_all
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from helper import json_struc, timeNowTZ, updateState
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from logger import append_line_to_file, mylog
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#-------------------------------------------------------------------------------
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class nmap_entry:
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def __init__(self, mac, time, port, state, service, name = '', extra = '', index = 0):
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self.mac = mac
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self.time = time
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self.port = port
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self.state = state
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self.service = service
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self.name = name
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self.extra = extra
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self.index = index
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self.hash = str(mac) + str(port)+ str(state)+ str(service)
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#-------------------------------------------------------------------------------
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def performNmapScan(db, devicesToScan):
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"""
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run nmap scan on a list of devices
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discovers open ports and keeps track existing and new open ports
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"""
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if len(devicesToScan) > 0:
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timeoutSec = conf.NMAP_TIMEOUT
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devTotal = len(devicesToScan)
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updateState(db,"Scan: Nmap")
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mylog('verbose', ['[NMAP Scan] Scan: Nmap for max ', str(timeoutSec), 's ('+ str(round(int(timeoutSec) / 60, 1)) +'min) per device'])
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mylog('verbose', ["[NMAP Scan] Estimated max delay: ", (devTotal * int(timeoutSec)), 's ', '(', round((devTotal * int(timeoutSec))/60,1) , 'min)' ])
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devIndex = 0
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for device in devicesToScan:
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# Execute command
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output = ""
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# prepare arguments from user supplied ones
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nmapArgs = ['nmap'] + conf.NMAP_ARGS.split() + [device["dev_LastIP"]]
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progress = ' (' + str(devIndex+1) + '/' + str(devTotal) + ')'
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try:
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# try runnning a subprocess with a forced (timeout + 30 seconds) in case the subprocess hangs
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output = subprocess.check_output (nmapArgs, universal_newlines=True, stderr=subprocess.STDOUT, timeout=(timeoutSec + 30))
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except subprocess.CalledProcessError as e:
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# An error occured, handle it
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mylog('none', ["[NMAP Scan] " ,e.output])
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mylog('none', ["[NMAP Scan] Error - Nmap Scan - check logs", progress])
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except subprocess.TimeoutExpired as timeErr:
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mylog('verbose', ['[NMAP Scan] Nmap TIMEOUT - the process forcefully terminated as timeout reached for ', device["dev_LastIP"], progress])
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if output == "": # check if the subprocess failed
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mylog('minimal', ['[NMAP Scan] Nmap FAIL for ', device["dev_LastIP"], progress ,' check logs for details'])
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else:
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mylog('verbose', ['[NMAP Scan] Nmap SUCCESS for ', device["dev_LastIP"], progress])
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devIndex += 1
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# check the last run output
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newLines = output.split('\n')
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# regular logging
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for line in newLines:
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append_line_to_file (logPath + '/pialert_nmap.log', line +'\n')
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# collect ports / new Nmap Entries
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newEntriesTmp = []
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index = 0
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startCollecting = False
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duration = ""
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for line in newLines:
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if 'Starting Nmap' in line:
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if len(newLines) > index+1 and 'Note: Host seems down' in newLines[index+1]:
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break # this entry is empty
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elif 'PORT' in line and 'STATE' in line and 'SERVICE' in line:
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startCollecting = True
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elif 'PORT' in line and 'STATE' in line and 'SERVICE' in line:
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startCollecting = False # end reached
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elif startCollecting and len(line.split()) == 3:
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newEntriesTmp.append(nmap_entry(device["dev_MAC"], timeNowTZ(), line.split()[0], line.split()[1], line.split()[2], device["dev_Name"]))
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elif 'Nmap done' in line:
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duration = line.split('scanned in ')[1]
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index += 1
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mylog('verbose', ['[NMAP Scan] Ports found by NMAP: ', len(newEntriesTmp)])
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process_discovered_ports(db, device, newEntriesTmp)
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#end for loop
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def process_discovered_ports(db, device, discoveredPorts):
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"""
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process ports discovered by nmap
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compare to previosu ports
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update DB
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raise notifications
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"""
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sql = db.sql # TO-DO
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# previous Nmap Entries
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oldEntries = []
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changedPortsTmp = []
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mylog('verbose', ['[NMAP Scan] Process ports found by NMAP: ', len(discoveredPorts)])
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if len(discoveredPorts) > 0:
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# get all current NMAP ports from the DB
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rows = db.read(sql_nmap_scan_all)
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for row in rows:
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# only collect entries matching the current MAC address
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if row["MAC"] == device["dev_MAC"]:
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oldEntries.append(nmap_entry(row["MAC"], row["Time"], row["Port"], row["State"], row["Service"], device["dev_Name"], row["Extra"], row["Index"]))
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newEntries = []
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# Collect all entries that don't match the ones in the DB
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for discoveredPort in discoveredPorts:
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found = False
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# Check the new entry is already available in oldEntries and remove from processing if yes
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for oldEntry in oldEntries:
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if discoveredPort.hash == oldEntry.hash:
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found = True
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if not found:
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newEntries.append(discoveredPort)
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mylog('verbose', ['[NMAP Scan] Nmap newly discovered or changed ports: ', len(newEntries)])
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# collect new ports, find the corresponding old entry and return for notification purposes
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# also update the DB with the new values after deleting the old ones
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if len(newEntries) > 0:
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# params to build the SQL query
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params = []
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indexesToDelete = ""
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# Find old entry matching the new entry hash
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for newEntry in newEntries:
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foundEntry = None
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for oldEntry in oldEntries:
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if oldEntry.hash == newEntry.hash:
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indexesToDelete = indexesToDelete + str(oldEntry.index) + ','
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foundEntry = oldEntry
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columnNames = ["Name", "MAC", "Port", "State", "Service", "Extra", "NewOrOld" ]
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# Old entry found
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if foundEntry is not None:
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# Build params for sql query
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params.append((newEntry.mac, newEntry.time, newEntry.port, newEntry.state, newEntry.service, oldEntry.extra))
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# Build JSON for API and notifications
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changedPortsTmp.append({
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"Name" : foundEntry.name,
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"MAC" : newEntry.mac,
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"Port" : newEntry.port,
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"State" : newEntry.state,
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"Service" : newEntry.service,
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"Extra" : foundEntry.extra,
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"NewOrOld" : "New values"
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})
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changedPortsTmp.append({
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"Name" : foundEntry.name,
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"MAC" : foundEntry.mac,
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"Port" : foundEntry.port,
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"State" : foundEntry.state,
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"Service" : foundEntry.service,
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"Extra" : foundEntry.extra,
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"NewOrOld" : "Old values"
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})
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# New entry - no matching Old entry found
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else:
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# Build params for sql query
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params.append((newEntry.mac, newEntry.time, newEntry.port, newEntry.state, newEntry.service, ''))
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# Build JSON for API and notifications
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changedPortsTmp.append({
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"Name" : "New device",
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"MAC" : newEntry.mac,
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"Port" : newEntry.port,
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"State" : newEntry.state,
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"Service" : newEntry.service,
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"Extra" : "",
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"NewOrOld" : "New device"
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})
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conf.changedPorts_json_struc = json_struc({ "data" : changedPortsTmp}, columnNames)
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# Delete old entries if available
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if len(indexesToDelete) > 0:
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sql.execute ("DELETE FROM Nmap_Scan where \"Index\" in (" + indexesToDelete[:-1] +")")
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db.commitDB()
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# Insert new values into the DB
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sql.executemany ("""INSERT INTO Nmap_Scan ("MAC", "Time", "Port", "State", "Service", "Extra") VALUES (?, ?, ?, ?, ?, ?)""", params)
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db.commitDB()
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