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deb92d32bb
If a public IP is assigned to a VPC, a VM running inside that VPC cannot ping that public IP. This is due to the IPtables Nat rules set in such a way that drop any requests to the public IP from internal interfaces. I am fixing this so that internal hosts can also reach the public IP. Reproduction: Create a VPC Create a network inside the VPC Allocate a public IP Create a VM in the network Create a port forwarding rule enabling ICMP ping the public IP inside the VM (this will fail)
1076 lines
43 KiB
Python
Executable File
1076 lines
43 KiB
Python
Executable File
#!/usr/bin/python
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# -- coding: utf-8 --
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# Licensed to the Apache Software Foundation (ASF) under one
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# or more contributor license agreements. See the NOTICE file
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# distributed with this work for additional information
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# regarding copyright ownership. The ASF licenses this file
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# to you under the Apache License, Version 2.0 (the
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# "License"); you may not use this file except in compliance
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# with the License. You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing,
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# software distributed under the License is distributed on an
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# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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# KIND, either express or implied. See the License for the
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# specific language governing permissions and limitations
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# under the License.
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import sys
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import os
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import base64
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from merge import DataBag
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from pprint import pprint
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import subprocess
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import logging
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import re
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import time
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import shutil
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import os.path
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import os
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from fcntl import flock, LOCK_EX, LOCK_UN
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from cs.CsDatabag import CsDataBag, CsCmdLine
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import cs.CsHelper
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from cs.CsNetfilter import CsNetfilters
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from cs.CsDhcp import CsDhcp
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from cs.CsRedundant import *
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from cs.CsFile import CsFile
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from cs.CsApp import CsApache, CsDnsmasq
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from cs.CsMonitor import CsMonitor
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from cs.CsLoadBalancer import CsLoadBalancer
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from cs.CsConfig import CsConfig
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from cs.CsProcess import CsProcess
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from cs.CsStaticRoutes import CsStaticRoutes
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class CsPassword(CsDataBag):
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TOKEN_FILE="/tmp/passwdsrvrtoken"
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def process(self):
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for item in self.dbag:
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if item == "id":
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continue
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self.__update(item, self.dbag[item])
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def __update(self, vm_ip, password):
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token = ""
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try:
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tokenFile = open(self.TOKEN_FILE)
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token = tokenFile.read()
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except IOError:
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logging.debug("File %s does not exist" % self.TOKEN_FILE)
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ips_cmd = "ip addr show | grep inet | awk '{print $2}'"
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ips = CsHelper.execute(ips_cmd)
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for ip in ips:
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server_ip = ip.split('/')[0]
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proc = CsProcess(['/opt/cloud/bin/passwd_server_ip.py', server_ip])
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if proc.find():
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update_command = 'curl --header "DomU_Request: save_password" "http://{SERVER_IP}:8080/" -F "ip={VM_IP}" -F "password={PASSWORD}" ' \
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'-F "token={TOKEN}" >/dev/null 2>/dev/null &'.format(SERVER_IP=server_ip, VM_IP=vm_ip, PASSWORD=password, TOKEN=token)
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result = CsHelper.execute(update_command)
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logging.debug("Update password server result ==> %s" % result)
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class CsAcl(CsDataBag):
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"""
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Deal with Network acls
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"""
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class AclIP():
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""" For type Virtual Router """
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def __init__(self, obj, fw):
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self.fw = fw.get_fw()
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self.direction = 'egress'
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if obj['traffic_type'] == 'Ingress':
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self.direction = 'ingress'
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self.device = ''
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self.ip = obj['src_ip']
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self.rule = obj
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self.rule['type'] = obj['protocol']
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# src_port_range
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if 'src_port_range' in obj:
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self.rule['first_port'] = obj['src_port_range'][0]
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self.rule['last_port'] = obj['src_port_range'][1]
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self.rule['allowed'] = True
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self.rule['action'] = "ACCEPT"
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if self.rule['type'] == 'all' and obj['source_cidr_list']:
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self.rule['cidr'] = []
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else:
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self.rule['cidr'] = obj['source_cidr_list']
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if self.direction == 'egress':
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try:
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if not obj['dest_cidr_list']:
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self.rule['dcidr'] = []
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else:
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self.rule['dcidr'] = obj['dest_cidr_list']
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except Exception:
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self.rule['dcidr'] = []
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logging.debug("AclIP created for rule ==> %s", self.rule)
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def create(self):
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self.add_rule()
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def add_rule(self):
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icmp_type = ''
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rule = self.rule
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icmp_type = "any"
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if "icmp_type" in self.rule.keys() and self.rule['icmp_type'] != -1:
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icmp_type = self.rule['icmp_type']
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if "icmp_code" in self.rule.keys() and rule['icmp_code'] != -1:
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icmp_type = "%s/%s" % (self.rule['icmp_type'], self.rule['icmp_code'])
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rnge = ''
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if "first_port" in self.rule.keys() and \
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self.rule['first_port'] == self.rule['last_port']:
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rnge = " --dport %s " %self.rule['first_port']
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if "first_port" in self.rule.keys() and \
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self.rule['first_port'] != self.rule['last_port']:
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rnge = " --dport %s:%s" % (rule['first_port'], rule['last_port'])
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logging.debug("Current ACL IP direction is ==> %s", self.direction)
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if self.direction == 'ingress':
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for cidr in self.rule['cidr']:
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if rule['protocol'] == "icmp":
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self.fw.append(["mangle", "front",
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" -A FIREWALL_%s" % self.ip +
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" -s %s " % cidr +
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" -p %s " % rule['protocol'] +
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" --icmp-type %s -j %s" % (icmp_type, self.rule['action'])])
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else:
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self.fw.append(["mangle", "front",
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" -A FIREWALL_%s" % self.ip +
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" -s %s " % cidr +
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" -p %s " % rule['protocol'] +
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" %s -j %s" % (rnge, self.rule['action'])])
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sflag=False
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dflag=False
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if self.direction == 'egress':
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ruleId = self.rule['id']
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sourceIpsetName = 'sourceCidrIpset-%d' %ruleId
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destIpsetName = 'destCidrIpset-%d' %ruleId
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#create source cidr ipset
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srcIpset = 'ipset create '+sourceIpsetName + ' hash:net '
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dstIpset = 'ipset create '+destIpsetName + ' hash:net '
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CsHelper.execute(srcIpset)
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CsHelper.execute(dstIpset)
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for cidr in self.rule['cidr']:
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ipsetAddCmd = 'ipset add '+ sourceIpsetName + ' '+cidr
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CsHelper.execute(ipsetAddCmd)
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sflag = True
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logging.debug("egress rule ####==> %s", self.rule)
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for cidr in self.rule['dcidr']:
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ipsetAddCmd = 'ipset add '+ destIpsetName + ' '+cidr
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CsHelper.execute(ipsetAddCmd)
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dflag = True
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self.fw.append(["filter", "", " -A FW_OUTBOUND -j FW_EGRESS_RULES"])
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fwr = " -I FW_EGRESS_RULES"
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# In case we have a default rule (accept all or drop all), we have to evaluate the action again.
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if rule['type'] == 'all' and not rule['source_cidr_list']:
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fwr = " -A FW_EGRESS_RULES"
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# For default egress ALLOW or DENY, the logic is inverted.
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# Having default_egress_policy == True, means that the default rule should have ACCEPT,
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# otherwise DROP. The rule should be appended, not inserted.
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if self.rule['default_egress_policy']:
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self.rule['action'] = "ACCEPT"
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else:
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self.rule['action'] = "DROP"
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else:
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# For other rules added, if default_egress_policy == True, following rules should be DROP,
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# otherwise ACCEPT
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if self.rule['default_egress_policy']:
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self.rule['action'] = "DROP"
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else:
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self.rule['action'] = "ACCEPT"
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egressIpsetStr=''
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if sflag == True and dflag == True:
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egressIpsetStr = " -m set --match-set %s src " % sourceIpsetName + \
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" -m set --match-set %s dst " % destIpsetName
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elif sflag == True:
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egressIpsetStr = " -m set --match-set %s src " % sourceIpsetName
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elif dflag == True:
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egressIpsetStr = " -m set --match-set %s dst " % destIpsetName
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if rule['protocol'] == "icmp":
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fwr += egressIpsetStr + " -p %s " % rule['protocol'] + " -m %s " % rule['protocol'] + \
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" --icmp-type %s" % icmp_type
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elif rule['protocol'] != "all":
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fwr += egressIpsetStr + " -p %s " % rule['protocol'] + " -m %s " % rule['protocol'] + \
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" %s" % rnge
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elif rule['protocol'] == "all":
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fwr += egressIpsetStr
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self.fw.append(["filter", "", "%s -j %s" % (fwr, rule['action'])])
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logging.debug("EGRESS rule configured for protocol ==> %s, action ==> %s", rule['protocol'], rule['action'])
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class AclDevice():
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""" A little class for each list of acls per device """
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FIXED_RULES_INGRESS = 3
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FIXED_RULES_EGRESS = 3
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def __init__(self, obj, config):
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self.ingess = []
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self.egress = []
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self.device = obj['device']
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self.ip = obj['nic_ip']
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self.netmask = obj['nic_netmask']
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self.config = config
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self.cidr = "%s/%s" % (self.ip, self.netmask)
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if "ingress_rules" in obj.keys():
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self.ingress = obj['ingress_rules']
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if "egress_rules" in obj.keys():
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self.egress = obj['egress_rules']
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self.fw = config.get_fw()
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def create(self):
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self.process("ingress", self.ingress, self.FIXED_RULES_INGRESS)
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self.process("egress", self.egress, self.FIXED_RULES_EGRESS)
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def process(self, direction, rule_list, base):
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count = base
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for i in rule_list:
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r = self.AclRule(direction, self, i, self.config, count)
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r.create()
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count += 1
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class AclRule():
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def __init__(self, direction, acl, rule, config, count):
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self.count = count
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if config.is_vpc():
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self.init_vpc(direction, acl, rule, config)
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def init_vpc(self, direction, acl, rule, config):
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self.table = ""
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self.device = acl.device
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self.direction = direction
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# acl is an object of the AclDevice type. So, its fw attribute is already a list.
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self.fw = acl.fw
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self.chain = config.get_ingress_chain(self.device, acl.ip)
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self.dest = "-s %s" % rule['cidr']
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if direction == "egress":
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self.table = config.get_egress_table()
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self.chain = config.get_egress_chain(self.device, acl.ip)
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self.dest = "-d %s" % rule['cidr']
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self.type = ""
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self.type = rule['type']
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self.icmp_type = "any"
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self.protocol = self.type
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if "icmp_type" in rule.keys() and rule['icmp_type'] != -1:
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self.icmp_type = rule['icmp_type']
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if "icmp_code" in rule.keys() and rule['icmp_code'] != -1:
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self.icmp_type = "%s/%s" % (self.icmp_type, rule['icmp_code'])
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if self.type == "protocol":
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if rule['protocol'] == 41:
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rule['protocol'] = "ipv6"
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self.protocol = rule['protocol']
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self.action = "DROP"
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self.dport = ""
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if 'allowed' in rule.keys() and rule['allowed']:
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self.action = "ACCEPT"
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if 'first_port' in rule.keys():
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self.dport = "-m %s --dport %s" % (self.protocol, rule['first_port'])
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if 'last_port' in rule.keys() and self.dport and \
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rule['last_port'] != rule['first_port']:
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self.dport = "%s:%s" % (self.dport, rule['last_port'])
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def create(self):
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rstr = ""
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rstr = "%s -A %s -p %s %s" % (rstr, self.chain, self.protocol, self.dest)
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if self.type == "icmp":
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rstr = "%s -m icmp --icmp-type %s" % (rstr, self.icmp_type)
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rstr = "%s %s -j %s" % (rstr, self.dport, self.action)
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rstr = rstr.replace(" ", " ").lstrip()
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self.fw.append([self.table, self.count, rstr])
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def flushAllowAllEgressRules(self):
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logging.debug("Flush allow 'all' egress firewall rule")
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# Ensure that FW_EGRESS_RULES chain exists
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CsHelper.execute("iptables-save | grep '^:FW_EGRESS_RULES' || iptables -t filter -N FW_EGRESS_RULES")
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CsHelper.execute("iptables-save | grep '^-A FW_EGRESS_RULES -j ACCEPT$' | sed 's/^-A/iptables -t filter -D/g' | bash")
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CsHelper.execute("iptables -F FW_EGRESS_RULES")
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CsHelper.execute("ipset -L | grep Name: | awk {'print $2'} | ipset flush")
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CsHelper.execute("ipset -L | grep Name: | awk {'print $2'} | ipset destroy")
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def process(self):
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for item in self.dbag:
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if item == "id":
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continue
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if self.config.is_vpc():
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self.AclDevice(self.dbag[item], self.config).create()
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else:
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self.AclIP(self.dbag[item], self.config).create()
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class CsVmMetadata(CsDataBag):
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def process(self):
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for ip in self.dbag:
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if ("id" == ip):
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continue
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logging.info("Processing metadata for %s" % ip)
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for item in self.dbag[ip]:
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folder = item[0]
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file = item[1]
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data = item[2]
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# process only valid data
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if folder != "userdata" and folder != "metadata":
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continue
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if file == "":
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continue
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self.__htaccess(ip, folder, file)
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if data == "":
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self.__deletefile(ip, folder, file)
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else:
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self.__createfile(ip, folder, file, data)
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def __deletefile(self, ip, folder, file):
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datafile = "/var/www/html/" + folder + "/" + ip + "/" + file
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if os.path.exists(datafile):
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os.remove(datafile)
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def __createfile(self, ip, folder, file, data):
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dest = "/var/www/html/" + folder + "/" + ip + "/" + file
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metamanifestdir = "/var/www/html/" + folder + "/" + ip
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metamanifest = metamanifestdir + "/meta-data"
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# base64 decode userdata
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if folder == "userdata" or folder == "user-data":
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if data is not None:
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# need to pad data if it is not valid base 64
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if len(data) % 4 != 0:
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data += (4-(len(data) % 4)) * "="
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data = base64.b64decode(data)
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fh = open(dest, "w")
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self.__exflock(fh)
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if data is not None:
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fh.write(data)
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else:
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fh.write("")
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self.__unflock(fh)
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fh.close()
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os.chmod(dest, 0644)
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if folder == "metadata" or folder == "meta-data":
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try:
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os.makedirs(metamanifestdir, 0755)
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except OSError as e:
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# error 17 is already exists, we do it this way for concurrency
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if e.errno != 17:
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print "failed to make directories " + metamanifestdir + " due to :" + e.strerror
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sys.exit(1)
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if os.path.exists(metamanifest):
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fh = open(metamanifest, "r+a")
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self.__exflock(fh)
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if file not in fh.read():
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fh.write(file + '\n')
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self.__unflock(fh)
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fh.close()
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else:
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fh = open(metamanifest, "w")
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self.__exflock(fh)
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fh.write(file + '\n')
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self.__unflock(fh)
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fh.close()
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if os.path.exists(metamanifest):
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os.chmod(metamanifest, 0644)
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def __htaccess(self, ip, folder, file):
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entry = "RewriteRule ^" + file + "$ ../" + folder + "/%{REMOTE_ADDR}/" + file + " [L,NC,QSA]"
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htaccessFolder = "/var/www/html/latest"
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htaccessFile = htaccessFolder + "/.htaccess"
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CsHelper.mkdir(htaccessFolder, 0755, True)
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if os.path.exists(htaccessFile):
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fh = open(htaccessFile, "r+a")
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self.__exflock(fh)
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if entry not in fh.read():
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fh.write(entry + '\n')
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self.__unflock(fh)
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fh.close()
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else:
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fh = open(htaccessFile, "w")
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self.__exflock(fh)
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fh.write("Options +FollowSymLinks\nRewriteEngine On\n\n")
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fh.write(entry + '\n')
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self.__unflock(fh)
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fh.close()
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entry = "Options -Indexes\nOrder Deny,Allow\nDeny from all\nAllow from " + ip
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htaccessFolder = "/var/www/html/" + folder + "/" + ip
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htaccessFile = htaccessFolder+"/.htaccess"
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try:
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os.makedirs(htaccessFolder, 0755)
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except OSError as e:
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# error 17 is already exists, we do it this way for sake of concurrency
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if e.errno != 17:
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print "failed to make directories " + htaccessFolder + " due to :" + e.strerror
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sys.exit(1)
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fh = open(htaccessFile, "w")
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self.__exflock(fh)
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fh.write(entry + '\n')
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self.__unflock(fh)
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fh.close()
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if folder == "metadata" or folder == "meta-data":
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entry = "RewriteRule ^meta-data/(.+)$ ../" + folder + "/%{REMOTE_ADDR}/$1 [L,NC,QSA]"
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htaccessFolder = "/var/www/html/latest"
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htaccessFile = htaccessFolder + "/.htaccess"
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fh = open(htaccessFile, "r+a")
|
|
self.__exflock(fh)
|
|
if entry not in fh.read():
|
|
fh.write(entry + '\n')
|
|
|
|
entry = "RewriteRule ^meta-data/$ ../" + folder + "/%{REMOTE_ADDR}/meta-data [L,NC,QSA]"
|
|
|
|
fh.seek(0)
|
|
if entry not in fh.read():
|
|
fh.write(entry + '\n')
|
|
self.__unflock(fh)
|
|
fh.close()
|
|
|
|
def __exflock(self, file):
|
|
try:
|
|
flock(file, LOCK_EX)
|
|
except IOError as e:
|
|
print "failed to lock file" + file.name + " due to : " + e.strerror
|
|
sys.exit(1) # FIXME
|
|
return True
|
|
|
|
def __unflock(self, file):
|
|
try:
|
|
flock(file, LOCK_UN)
|
|
except IOError:
|
|
print "failed to unlock file" + file.name + " due to : " + e.strerror
|
|
sys.exit(1) # FIXME
|
|
return True
|
|
|
|
|
|
class CsSite2SiteVpn(CsDataBag):
|
|
"""
|
|
Setup any configured vpns (using swan)
|
|
left is the local machine
|
|
right is where the clients connect from
|
|
"""
|
|
|
|
VPNCONFDIR = "/etc/ipsec.d"
|
|
|
|
def process(self):
|
|
self.confips = []
|
|
# collect a list of configured vpns
|
|
for file in os.listdir(self.VPNCONFDIR):
|
|
m = re.search("^ipsec.vpn-(.*).conf", file)
|
|
if m:
|
|
self.confips.append(m.group(1))
|
|
|
|
for vpn in self.dbag:
|
|
if vpn == "id":
|
|
continue
|
|
|
|
local_ip = self.dbag[vpn]['local_public_ip']
|
|
dev = CsHelper.get_device(local_ip)
|
|
|
|
if dev == "":
|
|
logging.error("Request for ipsec to %s not possible because ip is not configured", local_ip)
|
|
continue
|
|
|
|
CsHelper.start_if_stopped("ipsec")
|
|
self.configure_iptables(dev, self.dbag[vpn])
|
|
self.configure_ipsec(self.dbag[vpn])
|
|
|
|
# Delete vpns that are no longer in the configuration
|
|
for ip in self.confips:
|
|
self.deletevpn(ip)
|
|
|
|
def deletevpn(self, ip):
|
|
logging.info("Removing VPN configuration for %s", ip)
|
|
CsHelper.execute("ipsec down vpn-%s" % ip)
|
|
CsHelper.execute("ipsec down vpn-%s" % ip)
|
|
vpnconffile = "%s/ipsec.vpn-%s.conf" % (self.VPNCONFDIR, ip)
|
|
vpnsecretsfile = "%s/ipsec.vpn-%s.secrets" % (self.VPNCONFDIR, ip)
|
|
os.remove(vpnconffile)
|
|
os.remove(vpnsecretsfile)
|
|
CsHelper.execute("ipsec reload")
|
|
|
|
def configure_iptables(self, dev, obj):
|
|
self.fw.append(["", "front", "-A INPUT -i %s -p udp -m udp --dport 500 -s %s -d %s -j ACCEPT" % (dev, obj['peer_gateway_ip'], obj['local_public_ip'])])
|
|
self.fw.append(["", "front", "-A INPUT -i %s -p udp -m udp --dport 4500 -s %s -d %s -j ACCEPT" % (dev, obj['peer_gateway_ip'], obj['local_public_ip'])])
|
|
self.fw.append(["", "front", "-A INPUT -i %s -p esp -s %s -d %s -j ACCEPT" % (dev, obj['peer_gateway_ip'], obj['local_public_ip'])])
|
|
self.fw.append(["nat", "front", "-A POSTROUTING -t nat -o %s -m mark --mark 0x525 -j ACCEPT" % dev])
|
|
for net in obj['peer_guest_cidr_list'].lstrip().rstrip().split(','):
|
|
self.fw.append(["mangle", "front",
|
|
"-A FORWARD -s %s -d %s -j MARK --set-xmark 0x525/0xffffffff" % (obj['local_guest_cidr'], net)])
|
|
self.fw.append(["mangle", "",
|
|
"-A OUTPUT -s %s -d %s -j MARK --set-xmark 0x525/0xffffffff" % (obj['local_guest_cidr'], net)])
|
|
self.fw.append(["mangle", "front",
|
|
"-A FORWARD -s %s -d %s -j MARK --set-xmark 0x524/0xffffffff" % (net, obj['local_guest_cidr'])])
|
|
self.fw.append(["mangle", "",
|
|
"-A INPUT -s %s -d %s -j MARK --set-xmark 0x524/0xffffffff" % (net, obj['local_guest_cidr'])])
|
|
|
|
def configure_ipsec(self, obj):
|
|
leftpeer = obj['local_public_ip']
|
|
rightpeer = obj['peer_gateway_ip']
|
|
peerlist = obj['peer_guest_cidr_list'].replace(' ', '')
|
|
vpnconffile = "%s/ipsec.vpn-%s.conf" % (self.VPNCONFDIR, rightpeer)
|
|
vpnsecretsfile = "%s/ipsec.vpn-%s.secrets" % (self.VPNCONFDIR, rightpeer)
|
|
ikepolicy=obj['ike_policy'].replace(';','-')
|
|
esppolicy=obj['esp_policy'].replace(';','-')
|
|
|
|
pfs='no'
|
|
if 'modp' in esppolicy:
|
|
pfs='yes'
|
|
|
|
if rightpeer in self.confips:
|
|
self.confips.remove(rightpeer)
|
|
file = CsFile(vpnconffile)
|
|
file.add("#conn for vpn-%s" % rightpeer, 0)
|
|
file.search("conn ", "conn vpn-%s" % rightpeer)
|
|
file.addeq(" left=%s" % leftpeer)
|
|
file.addeq(" leftsubnet=%s" % obj['local_guest_cidr'])
|
|
file.addeq(" leftnexthop=%s" % obj['local_public_gateway'])
|
|
file.addeq(" right=%s" % rightpeer)
|
|
file.addeq(" rightsubnet=%s" % peerlist)
|
|
file.addeq(" type=tunnel")
|
|
file.addeq(" authby=secret")
|
|
file.addeq(" keyexchange=ike")
|
|
file.addeq(" ike=%s" % ikepolicy)
|
|
file.addeq(" ikelifetime=%s" % self.convert_sec_to_h(obj['ike_lifetime']))
|
|
file.addeq(" esp=%s" % esppolicy)
|
|
file.addeq(" lifetime=%s" % self.convert_sec_to_h(obj['esp_lifetime']))
|
|
file.addeq(" pfs=%s" % pfs)
|
|
file.addeq(" keyingtries=2")
|
|
file.addeq(" auto=start")
|
|
if 'encap' not in obj:
|
|
obj['encap']=False
|
|
file.addeq(" forceencaps=%s" % CsHelper.bool_to_yn(obj['encap']))
|
|
if obj['dpd']:
|
|
file.addeq(" dpddelay=30")
|
|
file.addeq(" dpdtimeout=120")
|
|
file.addeq(" dpdaction=restart")
|
|
secret = CsFile(vpnsecretsfile)
|
|
secret.search("%s " % leftpeer, "%s %s : PSK \"%s\"" % (leftpeer, rightpeer, obj['ipsec_psk']))
|
|
if secret.is_changed() or file.is_changed():
|
|
secret.commit()
|
|
file.commit()
|
|
logging.info("Configured vpn %s %s", leftpeer, rightpeer)
|
|
CsHelper.execute("ipsec rereadsecrets")
|
|
|
|
# This will load the new config and start the connection when needed since auto=start in the config
|
|
CsHelper.execute("ipsec reload")
|
|
os.chmod(vpnsecretsfile, 0400)
|
|
|
|
def convert_sec_to_h(self, val):
|
|
hrs = int(val) / 3600
|
|
return "%sh" % hrs
|
|
|
|
|
|
class CsVpnUser(CsDataBag):
|
|
PPP_CHAP='/etc/ppp/chap-secrets'
|
|
|
|
def process(self):
|
|
for user in self.dbag:
|
|
if user == 'id':
|
|
continue
|
|
|
|
userconfig=self.dbag[user]
|
|
if userconfig['add']:
|
|
self.add_l2tp_ipsec_user(user, userconfig)
|
|
else:
|
|
self.del_l2tp_ipsec_user(user, userconfig)
|
|
|
|
def add_l2tp_ipsec_user(self, user, obj):
|
|
userfound = False
|
|
password = obj['password']
|
|
|
|
userAddEntry = "%s * %s *" %(user,password)
|
|
logging.debug("Adding vpn user '%s'" % user)
|
|
|
|
file = CsFile(self.PPP_CHAP)
|
|
userfound = file.searchString(userAddEntry, '#')
|
|
if not userfound:
|
|
logging.debug("User is not there already, so adding user")
|
|
self.del_l2tp_ipsec_user(user, obj)
|
|
file.add(userAddEntry)
|
|
file.commit()
|
|
|
|
def del_l2tp_ipsec_user(self, user, obj):
|
|
userfound = False
|
|
password = obj['password']
|
|
userentry = "%s * %s *" % (user,password)
|
|
|
|
logging.debug("Deleting the user '%s'" % user)
|
|
file = CsFile(self.PPP_CHAP)
|
|
file.deleteLine(userentry)
|
|
file.commit()
|
|
|
|
if not os.path.exists('/var/run/pppd2.tdb'):
|
|
return
|
|
|
|
logging.debug("killing the PPPD process for the user '%s'" % user)
|
|
|
|
fileContents = CsHelper.execute("tdbdump /var/run/pppd2.tdb")
|
|
for line in fileContents:
|
|
if user in line:
|
|
contentlist = line.split(';')
|
|
for str in contentlist:
|
|
pppd = str.split('=')[0]
|
|
if pppd == 'PPPD_PID':
|
|
pid = str.split('=')[1]
|
|
if pid:
|
|
logging.debug("killing process %s" %pid)
|
|
CsHelper.execute('kill -9 %s' % pid)
|
|
|
|
|
|
class CsRemoteAccessVpn(CsDataBag):
|
|
VPNCONFDIR = "/etc/ipsec.d"
|
|
|
|
def process(self):
|
|
self.confips = []
|
|
|
|
logging.debug(self.dbag)
|
|
for public_ip in self.dbag:
|
|
if public_ip == "id":
|
|
continue
|
|
vpnconfig=self.dbag[public_ip]
|
|
|
|
#Enable remote access vpn
|
|
if vpnconfig['create']:
|
|
logging.debug("Enabling remote access vpn on "+ public_ip)
|
|
|
|
dev = CsHelper.get_device(public_ip)
|
|
if dev == "":
|
|
logging.error("Request for ipsec to %s not possible because ip is not configured", public_ip)
|
|
continue
|
|
|
|
CsHelper.start_if_stopped("ipsec")
|
|
self.configure_l2tpIpsec(public_ip, self.dbag[public_ip])
|
|
logging.debug("Remote accessvpn data bag %s", self.dbag)
|
|
self.remoteaccessvpn_iptables(public_ip, self.dbag[public_ip])
|
|
|
|
CsHelper.execute("ipsec update")
|
|
CsHelper.execute("service xl2tpd start")
|
|
CsHelper.execute("ipsec rereadsecrets")
|
|
else:
|
|
logging.debug("Disabling remote access vpn .....")
|
|
#disable remote access vpn
|
|
CsHelper.execute("ipsec down L2TP-PSK")
|
|
CsHelper.execute("service xl2tpd stop")
|
|
|
|
|
|
def configure_l2tpIpsec(self, left, obj):
|
|
l2tpconffile="%s/l2tp.conf" % (self.VPNCONFDIR)
|
|
vpnsecretfilte="%s/ipsec.any.secrets" % (self.VPNCONFDIR)
|
|
xl2tpdconffile="/etc/xl2tpd/xl2tpd.conf"
|
|
xl2tpoptionsfile='/etc/ppp/options.xl2tpd'
|
|
|
|
file = CsFile(l2tpconffile)
|
|
localip=obj['local_ip']
|
|
localcidr=obj['local_cidr']
|
|
publicIface=obj['public_interface']
|
|
iprange=obj['ip_range']
|
|
psk=obj['preshared_key']
|
|
|
|
#left
|
|
file.addeq(" left=%s" % left)
|
|
file.commit()
|
|
|
|
|
|
secret = CsFile(vpnsecretfilte)
|
|
secret.empty()
|
|
secret.addeq(": PSK \"%s\"" %psk)
|
|
secret.commit()
|
|
|
|
xl2tpdconf = CsFile(xl2tpdconffile)
|
|
xl2tpdconf.addeq("ip range = %s" %iprange)
|
|
xl2tpdconf.addeq("local ip = %s" %localip)
|
|
xl2tpdconf.commit()
|
|
|
|
xl2tpoptions=CsFile(xl2tpoptionsfile)
|
|
xl2tpoptions.search("ms-dns ", "ms-dns %s" %localip)
|
|
xl2tpoptions.commit()
|
|
|
|
def remoteaccessvpn_iptables(self, publicip, obj):
|
|
publicdev=obj['public_interface']
|
|
localcidr=obj['local_cidr']
|
|
local_ip=obj['local_ip']
|
|
|
|
|
|
self.fw.append(["", "", "-A INPUT -i %s --dst %s -p udp -m udp --dport 500 -j ACCEPT" % (publicdev, publicip)])
|
|
self.fw.append(["", "", "-A INPUT -i %s --dst %s -p udp -m udp --dport 4500 -j ACCEPT" % (publicdev, publicip)])
|
|
self.fw.append(["", "", "-A INPUT -i %s --dst %s -p udp -m udp --dport 1701 -j ACCEPT" % (publicdev, publicip)])
|
|
self.fw.append(["", "", "-A INPUT -i %s -p ah -j ACCEPT" % publicdev])
|
|
self.fw.append(["", "", "-A INPUT -i %s -p esp -j ACCEPT" % publicdev])
|
|
|
|
if self.config.is_vpc():
|
|
self.fw.append(["", ""," -N VPN_FORWARD"])
|
|
self.fw.append(["", "","-I FORWARD -i ppp+ -j VPN_FORWARD"])
|
|
self.fw.append(["", "","-I FORWARD -o ppp+ -j VPN_FORWARD"])
|
|
self.fw.append(["", "","-I FORWARD -o ppp+ -j VPN_FORWARD"])
|
|
self.fw.append(["", "","-A VPN_FORWARD -s %s -j RETURN" %localcidr])
|
|
self.fw.append(["", "","-A VPN_FORWARD -i ppp+ -d %s -j RETURN" %localcidr])
|
|
self.fw.append(["", "","-A VPN_FORWARD -i ppp+ -o ppp+ -j RETURN"])
|
|
else:
|
|
self.fw.append(["", "","-A FORWARD -i ppp+ -o ppp+ -j ACCEPT"])
|
|
self.fw.append(["", "","-A FORWARD -s %s -o ppp+ -j ACCEPT" % localcidr])
|
|
self.fw.append(["", "","-A FORWARD -i ppp+ -d %s -j ACCEPT" % localcidr])
|
|
|
|
|
|
self.fw.append(["", "","-A INPUT -i ppp+ -m udp -p udp --dport 53 -j ACCEPT"])
|
|
self.fw.append(["", "","-A INPUT -i ppp+ -m tcp -p tcp --dport 53 -j ACCEPT"])
|
|
self.fw.append(["nat", "","-I PREROUTING -i ppp+ -m tcp --dport 53 -j DNAT --to-destination %s" % local_ip])
|
|
|
|
if self.config.is_vpc():
|
|
return
|
|
|
|
self.fw.append(["mangle", "","-N VPN_%s " %publicip])
|
|
self.fw.append(["mangle", "","-A VPN_%s -j RETURN " % publicip])
|
|
self.fw.append(["mangle", "","-I VPN_%s -p ah -j ACCEPT " % publicip])
|
|
self.fw.append(["mangle", "","-I VPN_%s -p esp -j ACCEPT " % publicip])
|
|
self.fw.append(["mangle", "","-I PREROUTING -d %s -j VPN_%s " % (publicip, publicip)])
|
|
|
|
|
|
class CsForwardingRules(CsDataBag):
|
|
|
|
def process(self):
|
|
for public_ip in self.dbag:
|
|
if public_ip == "id":
|
|
continue
|
|
for rule in self.dbag[public_ip]:
|
|
if rule["type"] == "forward":
|
|
self.processForwardRule(rule)
|
|
elif rule["type"] == "staticnat":
|
|
self.processStaticNatRule(rule)
|
|
|
|
#return the VR guest interface ip
|
|
def getGuestIp(self):
|
|
interfaces = []
|
|
ipAddr = None
|
|
for interface in self.config.address().get_interfaces():
|
|
if interface.is_guest():
|
|
interfaces.append(interface)
|
|
if len(interfaces) > 0:
|
|
ipAddr = sorted(interfaces)[-1]
|
|
if ipAddr:
|
|
return ipAddr.get_ip()
|
|
|
|
return None
|
|
|
|
def getDeviceByIp(self, ipa):
|
|
for interface in self.config.address().get_interfaces():
|
|
if interface.ip_in_subnet(ipa):
|
|
return interface.get_device()
|
|
return None
|
|
|
|
def getNetworkByIp(self, ipa):
|
|
for interface in self.config.address().get_interfaces():
|
|
if interface.ip_in_subnet(ipa):
|
|
return interface.get_network()
|
|
return None
|
|
|
|
def getGatewayByIp(self, ipa):
|
|
for interface in self.config.address().get_interfaces():
|
|
if interface.ip_in_subnet(ipa):
|
|
return interface.get_gateway()
|
|
return None
|
|
|
|
def portsToString(self, ports, delimiter):
|
|
ports_parts = ports.split(":", 2)
|
|
if ports_parts[0] == ports_parts[1]:
|
|
return str(ports_parts[0])
|
|
else:
|
|
return "%s%s%s" % (ports_parts[0], delimiter, ports_parts[1])
|
|
|
|
def processForwardRule(self, rule):
|
|
if self.config.is_vpc():
|
|
self.forward_vpc(rule)
|
|
else:
|
|
self.forward_vr(rule)
|
|
|
|
def forward_vr(self, rule):
|
|
#prefetch iptables variables
|
|
public_fwinterface = self.getDeviceByIp(rule['public_ip'])
|
|
internal_fwinterface = self.getDeviceByIp(rule['internal_ip'])
|
|
public_fwports = self.portsToString(rule['public_ports'], ':')
|
|
internal_fwports = self.portsToString(rule['internal_ports'], '-')
|
|
fw1 = "-A PREROUTING -d %s/32 -i %s -p %s -m %s --dport %s -j DNAT --to-destination %s:%s" % \
|
|
(
|
|
rule['public_ip'],
|
|
public_fwinterface,
|
|
rule['protocol'],
|
|
rule['protocol'],
|
|
public_fwports,
|
|
rule['internal_ip'],
|
|
internal_fwports
|
|
)
|
|
fw2 = "-A PREROUTING -d %s/32 -i %s -p %s -m %s --dport %s -j DNAT --to-destination %s:%s" % \
|
|
(
|
|
rule['public_ip'],
|
|
internal_fwinterface,
|
|
rule['protocol'],
|
|
rule['protocol'],
|
|
public_fwports,
|
|
rule['internal_ip'],
|
|
internal_fwports
|
|
)
|
|
fw3 = "-A OUTPUT -d %s/32 -p %s -m %s --dport %s -j DNAT --to-destination %s:%s" % \
|
|
(
|
|
rule['public_ip'],
|
|
rule['protocol'],
|
|
rule['protocol'],
|
|
public_fwports,
|
|
rule['internal_ip'],
|
|
internal_fwports
|
|
)
|
|
fw4 = "-j SNAT --to-source %s -A POSTROUTING -s %s -d %s/32 -o %s -p %s -m %s --dport %s" % \
|
|
(
|
|
self.getGuestIp(),
|
|
self.getNetworkByIp(rule['internal_ip']),
|
|
rule['internal_ip'],
|
|
internal_fwinterface,
|
|
rule['protocol'],
|
|
rule['protocol'],
|
|
self.portsToString(rule['internal_ports'], ':')
|
|
)
|
|
fw5 = "-A PREROUTING -d %s/32 -i %s -p %s -m %s --dport %s -j MARK --set-xmark %s/0xffffffff" % \
|
|
(
|
|
rule['public_ip'],
|
|
public_fwinterface,
|
|
rule['protocol'],
|
|
rule['protocol'],
|
|
public_fwports,
|
|
hex(int(public_fwinterface[3:]))
|
|
)
|
|
fw6 = "-A PREROUTING -d %s/32 -i %s -p %s -m %s --dport %s -m state --state NEW -j CONNMARK --save-mark --nfmask 0xffffffff --ctmask 0xffffffff" % \
|
|
(
|
|
rule['public_ip'],
|
|
public_fwinterface,
|
|
rule['protocol'],
|
|
rule['protocol'],
|
|
public_fwports,
|
|
)
|
|
fw7 = "-A FORWARD -i %s -o %s -p %s -m %s --dport %s -m state --state NEW,ESTABLISHED -j ACCEPT" % \
|
|
(
|
|
public_fwinterface,
|
|
internal_fwinterface,
|
|
rule['protocol'],
|
|
rule['protocol'],
|
|
self.portsToString(rule['internal_ports'], ':')
|
|
)
|
|
self.fw.append(["nat", "", fw1])
|
|
self.fw.append(["nat", "", fw2])
|
|
self.fw.append(["nat", "", fw3])
|
|
self.fw.append(["nat", "", fw4])
|
|
self.fw.append(["nat", "", fw5])
|
|
self.fw.append(["nat", "", fw6])
|
|
self.fw.append(["filter", "", fw7])
|
|
|
|
def forward_vpc(self, rule):
|
|
fw_prerout_rule = "-A PREROUTING -d %s/32 " % (rule["public_ip"])
|
|
if not rule["protocol"] == "any":
|
|
fw_prerout_rule += " -m %s -p %s" % (rule["protocol"], rule["protocol"])
|
|
if not rule["public_ports"] == "any":
|
|
fw_prerout_rule += " --dport %s" % self.portsToString(rule["public_ports"], ":")
|
|
fw_prerout_rule += " -j DNAT --to-destination %s" % rule["internal_ip"]
|
|
if not rule["internal_ports"] == "any":
|
|
fw_prerout_rule += ":" + self.portsToString(rule["internal_ports"], "-")
|
|
|
|
fw_postrout_rule = "-A POSTROUTING -d %s/32 " % rule["public_ip"]
|
|
if not rule["protocol"] == "any":
|
|
fw_postrout_rule += " -m %s -p %s" % (rule["protocol"], rule["protocol"])
|
|
if not rule["public_ports"] == "any":
|
|
fw_postrout_rule += " --dport %s" % self.portsToString(rule["public_ports"], ":")
|
|
fw_postrout_rule += " -j SNAT --to-source %s" % rule["internal_ip"]
|
|
if not rule["internal_ports"] == "any":
|
|
fw_postrout_rule += ":" + self.portsToString(rule["internal_ports"], "-")
|
|
|
|
fw_output_rule = "-A OUTPUT -d %s/32" % rule["public_ip"]
|
|
if not rule["protocol"] == "any":
|
|
fw_output_rule += " -m %s -p %s" % (rule["protocol"], rule["protocol"])
|
|
if not rule["public_ports"] == "any":
|
|
fw_output_rule += " --dport %s" % self.portsToString(rule["public_ports"], ":")
|
|
fw_output_rule += " -j DNAT --to-destination %s" % rule["internal_ip"]
|
|
if not rule["internal_ports"] == "any":
|
|
fw_output_rule += ":" + self.portsToString(rule["internal_ports"], "-")
|
|
|
|
self.fw.append(["nat", "", fw_prerout_rule])
|
|
self.fw.append(["nat", "", fw_postrout_rule])
|
|
self.fw.append(["nat", "", fw_output_rule])
|
|
|
|
def processStaticNatRule(self, rule):
|
|
# FIXME this needs ordering with the VPN no nat rule
|
|
device = self.getDeviceByIp(rule["public_ip"])
|
|
if device is None:
|
|
raise Exception("Ip address %s has no device in the ips databag" % rule["public_ip"])
|
|
|
|
self.fw.append(["mangle", "",
|
|
"-I PREROUTING -s %s/32 -m state --state NEW -j CONNMARK --save-mark --nfmask 0xffffffff --ctmask 0xffffffff" % \
|
|
rule["internal_ip"]])
|
|
self.fw.append(["mangle", "",
|
|
"-I PREROUTING -s %s/32 -m state --state NEW -j MARK --set-xmark 0x%s/0xffffffff" % \
|
|
(rule["internal_ip"], device[len("eth"):])])
|
|
self.fw.append(["nat", "front",
|
|
"-A PREROUTING -d %s/32 -j DNAT --to-destination %s" % (rule["public_ip"], rule["internal_ip"])])
|
|
self.fw.append(["nat", "front",
|
|
"-A POSTROUTING -o %s -s %s/32 -j SNAT --to-source %s" % (device, rule["internal_ip"], rule["public_ip"])])
|
|
self.fw.append(["nat", "front",
|
|
"-A OUTPUT -d %s/32 -j DNAT --to-destination %s" % (rule["public_ip"], rule["internal_ip"])])
|
|
self.fw.append(["filter", "",
|
|
"-A FORWARD -i %s -o eth0 -d %s -m state --state NEW -j ACCEPT " % (device, rule["internal_ip"])])
|
|
|
|
#configure the hairpin nat
|
|
self.fw.append(["nat", "front",
|
|
"-A PREROUTING -d %s -i eth0 -j DNAT --to-destination %s" % (rule["public_ip"], rule["internal_ip"])])
|
|
|
|
self.fw.append(["nat", "front", "-A POSTROUTING -s %s -d %s -j SNAT -o eth0 --to-source %s" % (self.getNetworkByIp(rule['internal_ip']),rule["internal_ip"], self.getGuestIp())])
|
|
|
|
|
|
def main(argv):
|
|
# The file we are currently processing, if it is "cmd_line.json" everything will be processed.
|
|
process_file = argv[1]
|
|
|
|
# process_file can be None, if so assume cmd_line.json
|
|
if process_file is None:
|
|
process_file = "cmd_line.json"
|
|
|
|
# Track if changes need to be committed to NetFilter
|
|
iptables_change = False
|
|
|
|
# The "GLOBAL" Configuration object
|
|
config = CsConfig()
|
|
|
|
logging.basicConfig(filename=config.get_logger(),
|
|
level=config.get_level(),
|
|
format=config.get_format())
|
|
try:
|
|
# Load stored ip adresses from disk to CsConfig()
|
|
config.set_address()
|
|
|
|
logging.debug("Configuring ip addresses")
|
|
config.address().compare()
|
|
config.address().process()
|
|
|
|
if process_file in ["cmd_line.json", "guest_network.json"]:
|
|
logging.debug("Configuring Guest Network")
|
|
iptables_change = True
|
|
|
|
if process_file in ["cmd_line.json", "vm_password.json"]:
|
|
logging.debug("Configuring vmpassword")
|
|
password = CsPassword("vmpassword", config)
|
|
password.process()
|
|
|
|
if process_file in ["cmd_line.json", "vm_metadata.json"]:
|
|
logging.debug("Configuring vmdata")
|
|
metadata = CsVmMetadata('vmdata', config)
|
|
metadata.process()
|
|
|
|
if process_file in ["cmd_line.json", "network_acl.json"]:
|
|
logging.debug("Configuring networkacl")
|
|
iptables_change = True
|
|
|
|
if process_file in ["cmd_line.json", "firewall_rules.json"]:
|
|
logging.debug("Configuring firewall rules")
|
|
iptables_change = True
|
|
|
|
if process_file in ["cmd_line.json", "forwarding_rules.json", "staticnat_rules.json"]:
|
|
logging.debug("Configuring PF rules")
|
|
iptables_change = True
|
|
|
|
if process_file in ["cmd_line.json", "site_2_site_vpn.json"]:
|
|
logging.debug("Configuring s2s vpn")
|
|
iptables_change = True
|
|
|
|
if process_file in ["cmd_line.json", "remote_access_vpn.json"]:
|
|
logging.debug("Configuring remote access vpn")
|
|
iptables_change = True
|
|
|
|
if process_file in ["cmd_line.json", "vpn_user_list.json"]:
|
|
logging.debug("Configuring vpn users list")
|
|
vpnuser = CsVpnUser("vpnuserlist", config)
|
|
vpnuser.process()
|
|
|
|
if process_file in ["cmd_line.json", "vm_dhcp_entry.json", "dhcp.json"]:
|
|
logging.debug("Configuring dhcp entry")
|
|
dhcp = CsDhcp("dhcpentry", config)
|
|
dhcp.process()
|
|
|
|
if process_file in ["cmd_line.json", "load_balancer.json"]:
|
|
logging.debug("Configuring load balancer")
|
|
iptables_change = True
|
|
|
|
if process_file in ["cmd_line.json", "monitor_service.json"]:
|
|
logging.debug("Configuring monitor service")
|
|
mon = CsMonitor("monitorservice", config)
|
|
mon.process()
|
|
|
|
# If iptable rules have changed, apply them.
|
|
if iptables_change:
|
|
acls = CsAcl('networkacl', config)
|
|
acls.process()
|
|
|
|
acls = CsAcl('firewallrules', config)
|
|
acls.flushAllowAllEgressRules()
|
|
acls.process()
|
|
|
|
fwd = CsForwardingRules("forwardingrules", config)
|
|
fwd.process()
|
|
|
|
vpns = CsSite2SiteVpn("site2sitevpn", config)
|
|
vpns.process()
|
|
|
|
rvpn = CsRemoteAccessVpn("remoteaccessvpn", config)
|
|
rvpn.process()
|
|
|
|
lb = CsLoadBalancer("loadbalancer", config)
|
|
lb.process()
|
|
|
|
logging.debug("Configuring iptables rules")
|
|
nf = CsNetfilters()
|
|
nf.compare(config.get_fw())
|
|
|
|
logging.debug("Configuring iptables rules done ...saving rules")
|
|
|
|
# Save iptables configuration - will be loaded on reboot by the iptables-restore that is configured on /etc/rc.local
|
|
CsHelper.save_iptables("iptables-save", "/etc/iptables/router_rules.v4")
|
|
CsHelper.save_iptables("ip6tables-save", "/etc/iptables/router_rules.v6")
|
|
|
|
red = CsRedundant(config)
|
|
red.set()
|
|
|
|
if process_file in ["cmd_line.json", "static_routes.json"]:
|
|
logging.debug("Configuring static routes")
|
|
static_routes = CsStaticRoutes("staticroutes", config)
|
|
static_routes.process()
|
|
except Exception:
|
|
logging.exception("Exception while configuring router")
|
|
return 1
|
|
|
|
if __name__ == "__main__":
|
|
main(sys.argv)
|