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cputils.py
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cputils.py
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#!/usr/bin/env python
# Module with useful functions for scripts using CloudPassage API
import sys
import platform
import os
import datetime
import os.path
import socket
import re
import json
import cpapi
verbose = False
def checkPythonVersion():
# This script depends on libraries like json and urllib2 which require 2.6 or 2.7
# so test for one of those, and exit if not found.
pyver = platform.python_version()
if ((not pyver.startswith('2.6')) and (not pyver.startswith('2.7'))):
print >> sys.stderr, "Python version %s is not supported, need 2.6.x or 2.7.x" % pyver
sys.exit(1)
def checkPidRunning(pid):
if (platform.system() != "Windows"):
try:
os.kill(pid, 0)
except OSError:
return False
else:
return True
else:
return True
def checkLockFile(filename):
pid = str(os.getpid())
if (os.path.isfile(filename)):
errMsg = "Lock file (%s) exists" % filename
pid = file(filename, 'r').readlines()[0].strip()
if (checkPidRunning(int(pid))):
print >> sys.stderr, "%s... Exiting" % errMsg
else:
print >> sys.stderr, "%s, but PID (%s) not running." % (errMsg, pid)
print >> sys.stderr, "Deleting stale lock file. Try running script again."
os.remove(filename)
sys.exit(1)
else:
file(filename, 'w').write(pid)
def convertAuthFilenameToConfig(filename):
basename = os.path.basename(filename)
return basename.replace(".auth", ".config")
def processAuthFile(filename, progDir):
if (not os.path.exists(filename)):
filename = os.path.join(progDir, filename)
if (not os.path.exists(filename)):
return (None, "Auth file %s does not exist" % filename)
fp = open(filename)
lines = fp.readlines()
fp.close()
credentials = []
for line in lines:
str = line.strip()
if not str.startswith("#"):
fields = str.split("|")
if (len(fields) == 2):
if (len(fields[0]) < 1):
print >> sys.stderr, "No ID field found: %s" % str
elif (len(fields[1]) < 1):
print >> sys.stderr, "No secret field found: %s" % str
elif (len(credentials) < 5):
credential = {'id': fields[0], 'secret': fields[1]}
credentials.append(credential)
else:
print >> sys.stderr, "Ignoring id=%s, only 5 accounts allowed" % fields[0]
if (len(credentials) == 0):
return (None, "Empty auth file, no credentials found in %s" % filename)
else:
return (credentials, None)
def validateURL(url):
url_regex = "https://([-A-Za-z0-9_.]+)[.]([-A-Za-z0-9_]+[.][-A-Za-z0-9_]+)"
m = re.match(url_regex,url)
if (m == None):
return (False, "Illegal URL format")
hostname = m.group(1)
domain = m.group(2)
if (domain != "cloudpassage.com"):
return (False, "%s is not allowed as domain, must use cloudpassage.com" % domain)
if (hostname == "www"):
return (False, "www is not allowed as hostname")
return (True, "")
def strToDate(str):
# assumes a UTC/ISO8601 date/time string (e.g. "2012-08-12T21:39:40.740301Z")
return datetime.datetime.strptime( str, "%Y-%m-%dT%H:%M:%S.%fZ" )
def verifyISO8601(tstr):
if (tstr == None) or (len(tstr) == 0):
return (False, "Empty timestamp, ISO8601 format required")
iso_regex = "(\d{4})-(\d{2})-(\d{2})(T(\d{2}):(\d{2}):(\d{2})(\.\d{1,6})?(Z|[+-]\d{4})?)?$"
m = re.match(iso_regex, tstr)
if (m == None):
return (False, "Timestamp (%s) does not match ISO8601 format" % tstr)
year = m.group(1)
month = m.group(2)
day = m.group(3)
hour = m.group(5)
minute = m.group(6)
second = m.group(7)
if (year == None) or (int(year) < 1900) or (int(year) > 2100):
return (False, "Invalid year (%s)" % year)
if (month == None) or (int(month) < 1) or (int(month) > 12):
return (False, "Invalid month (%s)" % month)
if (day == None) or (int(day) < 1) or (int(day) > 31):
return (False, "Invalid day of month (%s)" % day)
if (hour != None):
if (int(hour) < 0) or (int(hour) > 23):
return (False, "Invalid hour (%s)" % hour)
if (minute != None):
if (int(minute) < 0) or (int(minute) > 59):
return (False, "Invalid minute (%s)" % minute)
if (second != None):
if (int(second) < 0) or (int(second) > 59):
return (False, "Invalid second (%s)" % second)
now = getNowAsISO8601()
if (now < tstr):
return (False, "Timestamp (%s) is in the future" % tstr)
return (True, "")
def formatTimeAsISO8601(dt):
tuple = (dt.year, dt.month, dt.day, dt.hour, dt.minute, dt.second, dt.microsecond)
return "%04d-%02d-%02dT%02d:%02d:%02d.%06dZ" % tuple
def getNowAsISO8601():
return formatTimeAsISO8601(datetime.datetime.utcnow())
def getHostname():
return socket.gethostname()
monthNames = ["???", "Jan", "Feb", "Mar", "Apr",
"May", "Jun", "Jul", "Aug", "Sep",
"Oct", "Nov", "Dec"]
def getSyslogTime():
now = datetime.datetime.now()
tuple = (monthNames[now.month], now.day, now.hour, now.minute, now.second)
return "%s %2d %02d:%02d:%02d" % tuple
# Jan 6 19:05:30 percheron cpapi:
def getSyslogPrefix():
return "%s %s cpapi: " % (getSyslogTime(), getHostname())
###############################################################
## Parsing/Dumping various CP related endpoints (object types)
###############################################################
def isNullOrNot(obj):
if obj:
return "is not null"
else:
return "is null"
def parseServer(server):
name = None
id = None
ipAddr = None
if ('hostname' in server):
name = server['hostname']
if ('id' in server):
id = server['id']
if ('connecting_ip_address' in server):
ipAddr = server['connecting_ip_address']
return (name, id, ipAddr)
def dumpServer(server):
if verbose:
(name, id, ipAddr) = parseServer(server)
print "Server: name=%s ip=%s id=%s" % (name, ipAddr, id)
def parseServerGroup(server):
name = None
id = None
if ('name' in server):
name = server['name']
if ('id' in server):
id = server['id']
return (name, id)
def dumpServerGroup(server):
if verbose:
(name, id) = parseServerGroup(server)
print "ServerGroup: name=%s id=%s" % (name, id)
def parseFirewallPolicy(server):
name = None
id = None
if ('name' in server):
name = server['name']
if ('id' in server):
id = server['id']
return (name, id)
def dumpFirewallPolicy(server):
if verbose:
(name, id) = parseFirewallPolicy(server)
print "FirewallPolicy: name=%s id=%s" % (name, id)
def dumpFirewallService(service):
if verbose:
(serviceName, serviceID, ports, protocol) = parseFirewallService(service)
print "FirewallService: name=%s id=%s ports=%s/%s" % (serviceName, id, ports, protocol)
def parseFirewallService(service):
name = None
id = None
ports = None
protocol = None
if ('name' in service):
name = service['name']
if ('id' in service):
id = service['id']
if ('port' in service):
ports = service['port']
if ('protocol' in service):
protocol = service['protocol']
return (name, id, ports, protocol)
###############################################################
## findOrCreate methods for various endpoints
###############################################################
def findHostByNameOrAddress(apiCon, host):
resultsList = []
(response, authError) = apiCon.getServerList()
if ('servers' in response):
serverList = response['servers']
for server in serverList:
(serverName, serverID, serverIpAddr) = parseServer(server)
if ((serverName == host) or (serverIpAddr == host)):
dumpServer(server)
resultsList.append(serverID)
return resultsList
def findHostByID(apiCon, host):
(response, authError) = apiCon.getServerList()
if ('servers' in response):
serverList = response['servers']
for server in serverList:
(serverName, serverID, serverIpAddr) = parseServer(server)
if (serverID == host):
dumpServer(server)
return server
return None
def getHostList(apiCon):
resultsList = []
(response, authError) = apiCon.getServerList()
if ('servers' in response):
return response['servers']
else:
return None
def findHostInList(serverList, host):
for server in serverList:
(serverName, serverID, serverIpAddr) = parseServer(server)
if (serverID == host):
dumpServer(server)
return server
return None
def findGroupByName(apiCon, gname):
(response, authError) = apiCon.getServerGroupList()
if ('groups' in response):
groupList = response['groups']
for group in groupList:
(groupName, groupID) = parseServerGroup(group)
if (groupName.lower() == gname.lower()):
dumpServerGroup(group)
return group
return None
def getFirewallPolicyList(apiCon):
(response, authError) = apiCon.getFirewallPolicyList()
if ('firewall_policies' in response):
policyList = response['firewall_policies']
return policyList
else:
return None
def findFirewallPolicyByName(apiCon, fwpName):
(response, authError) = apiCon.getFirewallPolicyList()
if ('firewall_policies' in response):
policyList = response['firewall_policies']
for policy in policyList:
(policyName, policyID) = parseFirewallPolicy(policy)
if (policyName.lower() == fwpName.lower()):
dumpFirewallPolicy(policy)
return policyID
return None
def findFirewallPolicyByID(fwpList, fwpID):
for policy in fwpList:
if (policy['id'] == fwpID):
return policy
return None
def findFirewallServiceByName(fwsName, serviceList):
for service in serviceList:
(serviceName, serviceID, ports, protocol) = parseFirewallService(service)
if (serviceName.lower() == fwsName.lower()):
dumpFirewallService(service)
return serviceID
return None
def findOrCreateFirewallServices(apiCon, desired_list):
(response, authError) = getFirewallServiceList(apiCon)
if ('firewall_services' in response):
existing_list = response['firewall_services']
for svc in desired_list:
id = findFirewallServiceByName(svc['name'],existing_list)
if id == None:
(response, authError) = createFirewallService(apiCon,svc)
if ('firewall_service' in response):
fwsData = response['firewall_service']
if ('id' in fwsData):
id = fwsData['id']
svc['id'] = id
if id == None:
print >> sys.stderr, "Failed to create service %s" % svc['name']
def createFirewallServiceObj(name,ports,protocol):
obj = { 'name': name, 'port': ports, 'protocol': protocol }
return obj
# when creating windows firewall, add these services to rules
drop_svc_list = [ ]
drop_svc_list.append(createFirewallServiceObj('tcp-patch-1-52','1-52','TCP'))
drop_svc_list.append(createFirewallServiceObj('tcp-patch-54-442','54-442','TCP'))
drop_svc_list.append(createFirewallServiceObj('tcp-patch-444-65535','444-65535','TCP'))
drop_svc_list.append(createFirewallServiceObj('udp-patch-1-52','1-52','UDP'))
drop_svc_list.append(createFirewallServiceObj('udp-patch-54-65535','54-65535','UDP'))
accept_svc_list = [ ]
accept_svc_list.append(createFirewallServiceObj('dns AXFR','53','TCP'))
accept_svc_list.append(createFirewallServiceObj('https','443','TCP'))
accept_svc_list.append(createFirewallServiceObj('dns query','53','UDP'))
def findOrCreateFirewallPolicy(apiCon, policyName, platform):
desiredFirewallPolicy = findFirewallPolicyByName(apiCon,policyName)
if not (desiredFirewallPolicy):
print >> sys.stderr, "No %s quarantine policy found, creating: %s" % (platform, policyName)
findOrCreateFirewallServices(apiCon,drop_svc_list + accept_svc_list)
policy = createQuarentineFirewallPolicy(policyName, platform, "quarantine fw policy", drop_svc_list, accept_svc_list)
(response, authError) = apiCon.createFirewallPolicy(policy)
if authError:
print >> sys.stderr, "Firewall Policy Creation FAILED: check that your Halo API key has write priviledges on your account"
return None
desiredFirewallPolicy = findFirewallPolicyByName(apiCon,policyName)
return desiredFirewallPolicy
def checkFwPolicy(group, key, platform, policyList, desiredName):
if key in group:
id = group[key]
policy = findFirewallPolicyByID(policyList, id)
if (policy) and ('name' in policy):
if verbose:
print "%s firewall policy: %s" % (platform, policy['name'])
return desiredName.lower() == policy['name'].lower()
else:
print "%s firewall policy: none" % platform
return False
def checkGroupFirewallPolicies(group, apiCon, linuxFirewallPolicyName, windowsFirewallPolicyName):
policyList = getFirewallPolicyList(apiCon)
linuxOK = checkFwPolicy(group, 'linux_firewall_policy_id', 'linux', policyList, linuxFirewallPolicyName)
windowsOK = checkFwPolicy(group, 'windows_firewall_policy_id', 'windows', policyList,windowsFirewallPolicyName )
if not linuxOK:
newPolicy = findOrCreateFirewallPolicy(apiCon, linuxFirewallPolicyName,'linux')
apiCon.assignFirewallPolicyToGroup(group['id'], 'linux_firewall_policy_id', newPolicy)
if not windowsOK:
newPolicy = findOrCreateFirewallPolicy(apiCon, windowsFirewallPolicyName,'windows')
apiCon.assignFirewallPolicyToGroup(group['id'], 'windows_firewall_policy_id', newPolicy)
def createFirewallRule(chain, policy, svc = None):
rule = { "log": False, "active": True }
rule["chain"] = chain
rule["action"] = policy
rule["connection_states"] = None
rule["firewall_interface"] = None
rule["firewall_source"] = None
if svc:
rule["firewall_service"] = svc["id"]
else:
rule["firewall_service"] = None
return rule
def createQuarentineFirewallPolicy(name, platform, description, drop_svc_list = None, accept_svc_list = None):
fwPolicy = { "name": name, "platform": platform }
ruleList = []
if (platform != "windows"):
ruleList.append(createFirewallRule("INPUT", "DROP"))
ruleList.append(createFirewallRule("OUTPUT", "DROP"))
fwPolicy["firewall_rules"] = ruleList
fwPolicy["description"] = description
if (platform == "windows"):
fwPolicy["log_allowed"] = True;
fwPolicy["log_dropped"] = True;
fwPolicy["block_inbound"] = True;
fwPolicy["block_outbound"] = True;
return { "firewall_policy": fwPolicy }
def createFirewallService(apiCon,svcObj):
url = "%s:%d/%s/firewall_services" % (apiCon.base_url, apiCon.port, apiCon.api_ver)
svcData = { 'firewall_service': svcObj }
jsonData = json.dumps(svcData)
# print jsonData # for debugging
(data, authError) = apiCon.doPostRequest(url, apiCon.authToken, jsonData)
if (data):
return (json.loads(data), authError)
else:
return (None, authError)
def getFirewallServiceList(apiCon):
url = "%s:%d/%s/firewall_services/" % (apiCon.base_url, apiCon.port, apiCon.api_ver)
(data, authError) = apiCon.doGetRequest(url, apiCon.authToken)
if (data):
return (json.loads(data), authError)
else:
return (None, authError)
def getFirewallZoneList(apiCon):
url = "%s:%d/%s/firewall_zones/" % (apiCon.base_url, apiCon.port, apiCon.api_ver)
(data, authError) = apiCon.doGetRequest(url, apiCon.authToken)
if (data):
return (json.loads(data), authError)
else:
return (None, authError)
def createFirewallZone(apiCon,zoneObj):
url = "%s:%d/%s/firewall_zones" % (apiCon.base_url, apiCon.port, apiCon.api_ver)
zoneData = { 'firewall_zone': zoneObj }
jsonData = json.dumps(zoneData)
# print jsonData # for debugging
(data, authError) = apiCon.doPostRequest(url, apiCon.authToken, jsonData)
if (data):
return (json.loads(data), authError)
else:
return (None, authError)