tests: FILS HLP request with DHCPDISCOVER
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
This commit is contained in:
Jouni Malinen
Jouni Malinen
parent
124ddfa19e
commit
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@ -1,5 +1,5 @@
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# Test cases for FILS
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# Copyright (c) 2015-2016, Qualcomm Atheros, Inc.
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# Copyright (c) 2015-2017, Qualcomm Atheros, Inc.
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#
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# This software may be distributed under the terms of the BSD license.
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# See README for more details.
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@ -8,6 +8,9 @@ import binascii
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import hashlib
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import logging
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logger = logging.getLogger()
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import os
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import socket
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import struct
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import time
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import hostapd
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@ -15,6 +18,7 @@ from wpasupplicant import WpaSupplicant
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import hwsim_utils
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from utils import HwsimSkip
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from test_erp import check_erp_capa, start_erp_as
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from test_ap_hs20 import ip_checksum
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def check_fils_capa(dev):
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capa = dev.get_capability("fils")
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@ -361,13 +365,93 @@ def test_fils_sk_multiple_realms(dev, apdev):
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raise Exception("Association failed")
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hwsim_utils.test_connectivity(dev[0], hapd)
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# DHCP message op codes
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BOOTREQUEST=1
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BOOTREPLY=2
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OPT_PAD=0
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OPT_DHCP_MESSAGE_TYPE=53
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OPT_RAPID_COMMIT=80
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OPT_END=255
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DHCPDISCOVER=1
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DHCPOFFER=2
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DHCPREQUEST=3
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DHCPDECLINE=4
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DHCPACK=5
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DHCPNAK=6
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DHCPRELEASE=7
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DHCPINFORM=8
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def build_dhcp(req, dhcp_msg, chaddr, giaddr="0.0.0.0",
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ip_src="0.0.0.0", ip_dst="255.255.255.255",
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rapid_commit=True):
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proto = '\x08\x00' # IPv4
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_ip_src = socket.inet_pton(socket.AF_INET, ip_src)
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_ip_dst = socket.inet_pton(socket.AF_INET, ip_dst)
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_ciaddr = '\x00\x00\x00\x00'
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_yiaddr = '\x00\x00\x00\x00'
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_siaddr = '\x00\x00\x00\x00'
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_giaddr = socket.inet_pton(socket.AF_INET, giaddr)
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_chaddr = binascii.unhexlify(chaddr.replace(':','')) + 10*'\x00'
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htype = 1 # Hardware address type; 1 = Ethernet
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hlen = 6 # Hardware address length
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hops = 0
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xid = 123456
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secs = 0
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flags = 0
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if req:
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op = BOOTREQUEST
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src_port = 68
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dst_port = 67
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else:
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op = BOOTREPLY
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src_port = 67
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dst_port = 68
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payload = struct.pack('>BBBBLHH', op, htype, hlen, hops, xid, secs, flags)
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sname = 64*'\x00'
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file = 128*'\x00'
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payload += _ciaddr + _yiaddr + _siaddr + _giaddr + _chaddr + sname + file
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# magic - DHCP
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payload += '\x63\x82\x53\x63'
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# Option: DHCP Message Type
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payload += struct.pack('BBB', OPT_DHCP_MESSAGE_TYPE, 1, dhcp_msg)
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if rapid_commit:
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# Option: Rapid Commit
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payload += struct.pack('BB', OPT_RAPID_COMMIT, 0)
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# End Option
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payload += struct.pack('B', OPT_END)
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udp = struct.pack('>HHHH', src_port, dst_port,
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8 + len(payload), 0) + payload
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tot_len = 20 + len(udp)
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start = struct.pack('>BBHHBBBB', 0x45, 0, tot_len, 0, 0, 0, 128, 17)
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ipv4 = start + '\x00\x00' + _ip_src + _ip_dst
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csum = ip_checksum(ipv4)
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ipv4 = start + csum + _ip_src + _ip_dst
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return proto + ipv4 + udp
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def test_fils_sk_hlp(dev, apdev):
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"""FILS SK HLP"""
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"""FILS SK HLP (rapid commit server)"""
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run_fils_sk_hlp(dev, apdev, True)
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def test_fils_sk_hlp_no_rapid_commit(dev, apdev):
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"""FILS SK HLP (no rapid commit server)"""
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run_fils_sk_hlp(dev, apdev, False)
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def run_fils_sk_hlp(dev, apdev, rapid_commit_server):
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check_fils_capa(dev[0])
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check_erp_capa(dev[0])
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start_erp_as(apdev[1])
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sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM, socket.IPPROTO_UDP)
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sock.settimeout(5)
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sock.bind(("127.0.0.2", 67))
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bssid = apdev[0]['bssid']
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params = hostapd.wpa2_eap_params(ssid="fils")
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params['wpa_key_mgmt'] = "FILS-SHA256"
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@ -375,6 +459,11 @@ def test_fils_sk_hlp(dev, apdev):
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params['erp_domain'] = 'example.com'
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params['fils_realm'] = 'example.com'
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params['disable_pmksa_caching'] = '1'
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params['own_ip_addr'] = '127.0.0.3'
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params['dhcp_server'] = '127.0.0.2'
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params['fils_hlp_wait_time'] = '10000'
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if not rapid_commit_server:
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params['dhcp_rapid_commit_proxy'] = '1'
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hapd = hostapd.add_ap(apdev[0]['ifname'], params)
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dev[0].scan_for_bss(bssid, freq=2412)
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@ -388,9 +477,12 @@ def test_fils_sk_hlp(dev, apdev):
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for t in tests:
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if "FAIL" not in dev[0].request("FILS_HLP_REQ_ADD " + t):
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raise Exception("Invalid FILS_HLP_REQ_ADD accepted: " + t)
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dhcpdisc = build_dhcp(req=True, dhcp_msg=DHCPDISCOVER,
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chaddr=dev[0].own_addr())
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tests = [ "ff:ff:ff:ff:ff:ff aabb",
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"ff:ff:ff:ff:ff:ff " + 255*'cc',
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hapd.own_addr() + " ddee010203040506070809"]
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hapd.own_addr() + " ddee010203040506070809",
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"ff:ff:ff:ff:ff:ff " + binascii.hexlify(dhcpdisc) ]
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for t in tests:
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if "OK" not in dev[0].request("FILS_HLP_REQ_ADD " + t):
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raise Exception("FILS_HLP_REQ_ADD failed: " + t)
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@ -404,14 +496,60 @@ def test_fils_sk_hlp(dev, apdev):
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dev[0].dump_monitor()
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dev[0].select_network(id, freq=2412)
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ev = dev[0].wait_event(["CTRL-EVENT-EAP-STARTED",
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"EVENT-ASSOC-REJECT",
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"CTRL-EVENT-CONNECTED"], timeout=10)
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(msg,addr) = sock.recvfrom(1000)
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logger.debug("Received DHCP message from %s" % str(addr))
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if rapid_commit_server:
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# TODO: Proper rapid commit response
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dhcpdisc = build_dhcp(req=False, dhcp_msg=DHCPACK,
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chaddr=dev[0].own_addr(), giaddr="127.0.0.3")
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sock.sendto(dhcpdisc[2+20+8:], addr)
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else:
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dhcpdisc = build_dhcp(req=False, dhcp_msg=DHCPOFFER, rapid_commit=False,
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chaddr=dev[0].own_addr(), giaddr="127.0.0.3")
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sock.sendto(dhcpdisc[2+20+8:], addr)
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(msg,addr) = sock.recvfrom(1000)
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logger.debug("Received DHCP message from %s" % str(addr))
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dhcpdisc = build_dhcp(req=False, dhcp_msg=DHCPACK, rapid_commit=False,
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chaddr=dev[0].own_addr(), giaddr="127.0.0.3")
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sock.sendto(dhcpdisc[2+20+8:], addr)
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ev = dev[0].wait_event(["FILS-HLP-RX"], timeout=10)
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if ev is None:
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raise Exception("Connection using FILS/ERP timed out")
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if "CTRL-EVENT-EAP-STARTED" in ev:
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raise Exception("Unexpected EAP exchange")
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if "EVENT-ASSOC-REJECT" in ev:
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raise Exception("Association failed")
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raise Exception("FILS HLP response not reported")
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vals = ev.split(' ')
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frame = binascii.unhexlify(vals[3].split('=')[1])
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proto, = struct.unpack('>H', frame[0:2])
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if proto != 0x0800:
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raise Exception("Unexpected ethertype in HLP response: %d" % proto)
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frame = frame[2:]
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ip = frame[0:20]
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if ip_checksum(ip) != '\x00\x00':
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raise Exception("IP header checksum mismatch in HLP response")
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frame = frame[20:]
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udp = frame[0:8]
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frame = frame[8:]
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sport, dport, ulen, ucheck = struct.unpack('>HHHH', udp)
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if sport != 67 or dport != 68:
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raise Exception("Unexpected UDP port in HLP response")
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dhcp = frame[0:28]
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frame = frame[28:]
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op,htype,hlen,hops,xid,secs,flags,ciaddr,yiaddr,siaddr,giaddr = struct.unpack('>4BL2H4L', dhcp)
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chaddr = frame[0:16]
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frame = frame[16:]
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sname = frame[0:64]
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frame = frame[64:]
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file = frame[0:128]
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frame = frame[128:]
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options = frame
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if options[0:4] != '\x63\x82\x53\x63':
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raise Exception("No DHCP magic seen in HLP response")
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options = options[4:]
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# TODO: fully parse and validate DHCPACK options
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if struct.pack('BBB', OPT_DHCP_MESSAGE_TYPE, 1, DHCPACK) not in options:
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raise Exception("DHCPACK not in HLP response")
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dev[0].wait_connected()
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dev[0].request("FILS_HLP_REQ_FLUSH")
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# TODO: fils_hlp_wait_time=30 and no response from server
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