def sendUpdateForInterface(interface):
# send update request per interface
debug("-sendUpdateForInterface: ", interface)
# get IPs for given interface
ifaddrs = netifaces.ifaddresses(interface)
ipArr = []
if (netifaces.AF_INET in ifaddrs):
for ipEntry in ifaddrs[netifaces.AF_INET]:
ipArr.append(ipEntry['addr'])
if (netifaces.AF_INET6 in ifaddrs):
for ipEntry in ifaddrs[netifaces.AF_INET6]:
ipArr.append(
ipEntry['addr'].split('%')[0]) # fix trailing %<iface>
if (len(ipArr) == 0):
print("No IPv4 or IPv6 Addresses found for interface: ", interface)
return
debug("-sendUpdateForInterface: IPs: ", ", ".join(ipArr))
# get HW Addr
if ":" in interface: # handle virtual interfaces
hwAddr = netifaces.ifaddresses(
interface.rsplit(':')[0])[netifaces.AF_LINK][0]['addr']
else:
hwAddr = ifaddrs[netifaces.AF_LINK][0]['addr']
debug("-sendUpdateForInterface: HW-Addr: ", hwAddr)
# get all available sleep proxies
proxy = discoverSleepProxyForInterface(interface)
if (proxy == False):
print("No sleep proxy available for interface: ", interface)
return
# get hostname
host = socket.gethostname()
host_local = host + ".local"
debug("-sendUpdateForInterface: Host: " + host_local)
# create update request
update = dns.update.Update("")
## add some host stuff
for currIP in ipArr:
ipVersion = dns.inet.af_for_address(currIP)
if ipVersion == dns.inet.AF_INET:
dnsDatatype = dns.rdatatype.A
elif ipVersion == dns.inet.AF_INET6:
dnsDatatype = dns.rdatatype.AAAA
else:
continue
update.add(dns.reversename.from_address(currIP), TTL_short,
dns.rdatatype.PTR, host_local)
update.add(host_local, TTL_short, dnsDatatype, currIP)
## add services
for service in discoverServices(ipArr):
service_type = service[0].decode() + ".local"
service_type_host = host + "." + service_type
port = service[1].decode()
# add the service
if ((len(service) == 2 or service[2] == b"") and not DEBUG):
update.add(service_type_host, TTL_long, dns.rdatatype.TXT)
else:
txtrecord = ""
for i in range(2, len(service)):
txtrecord += " " + service[i].decode()
if (DEBUG):
txtrecord += " SPC_STATE=sleeping"
update.add(service_type_host, TTL_long, dns.rdatatype.TXT,
txtrecord)
# device-info service gets a txt record only
if (service_type != "device-info._tcp.local"):
update.add('_services._dns-sd._udp.local', TTL_long,
dns.rdatatype.PTR, service_type)
update.add(service_type, TTL_long, dns.rdatatype.PTR,
service_type_host)
update.add(service_type_host, TTL_short, dns.rdatatype.SRV,
"0 0 " + port + " " + host_local)
## add edns options
# http://files.dns-sd.org/draft-sekar-dns-ul.txt
# 2: Lease Time in seconds
leaseTimeOption = dns.edns.GenericOption(2, struct.pack("!L", TTL))
# http://tools.ietf.org/id/draft-cheshire-edns0-owner-option-00.txt
# 4: edns owner option (MAC addr for WOL Magic packet)
cleanMAC = "0000" + hwAddr.replace(":", "")
ownerOption = dns.edns.GenericOption(4,
codecs.decode(cleanMAC, 'hex_codec'))
update.use_edns(edns=True,
ednsflags=TTL_long,
options=[leaseTimeOption, ownerOption])
debug("-sendUpdateForInterface: request: ", update)
# send request to proxy
try:
debug("-sendUpdateForInterface: sending update to ", proxy['ip'])
response = dns.query.udp(update,
proxy['ip'],
timeout=10,
port=int(proxy['port']))
debug("-sendUpdateForInterface: response: ", response)
rcode = response.rcode()
if rcode != dns.rcode.NOERROR:
print("Unable to register with SleepProxy " + proxy['name'] +
" (" + proxy['ip'] + ":" + proxy['port'] + ") - Errcode: " +
rcode)
print(response)
except (DNSException, e):
print("Unable to register with SleepProxy " + proxy['name'] + " (" +
proxy['ip'] + ":" + proxy['port'] + ")")
print(e.__class__, e)
def sendUpdateForInterface(interface) :
# send update request per interface
if (DEBUG) :
print "-sendUpdateForInterface: ", interface
# get IPs for given interface
ifaddrs = netifaces.ifaddresses(interface)
ipArr = []
if (netifaces.AF_INET in ifaddrs) :
for ipEntry in ifaddrs[netifaces.AF_INET] :
ipArr.append(ipEntry['addr'])
if (netifaces.AF_INET6 in ifaddrs) :
for ipEntry in ifaddrs[netifaces.AF_INET6] :
ipArr.append(ipEntry['addr'].split('%')[0]) # fix trailing %<iface>
if (len(ipArr) == 0) :
print "No IPv4 or IPv6 Addresses found for interface: ", interface
return
if (DEBUG) :
print "-sendUpdateForInterface: IPs: ", ", ".join(ipArr)
# get HW Addr
if ":" in interface : # handle virtual interfaces
hwAddr = netifaces.ifaddresses(interface.rsplit(':')[0])[netifaces.AF_LINK][0]['addr']
else:
hwAddr = ifaddrs[netifaces.AF_LINK][0]['addr']
if (DEBUG) :
print "-sendUpdateForInterface: HW-Addr: ", hwAddr
# get all available sleep proxies
proxy = discoverSleepProxyForInterface(interface)
if (proxy == False) :
print "No sleep proxy available for interface: ", interface
return
# get hostname
host = socket.gethostname()
host_local = host + ".local"
if (DEBUG) :
print "-sendUpdateForInterface: Host: " + host_local
# create update request
update = dns.update.Update("")
## add some host stuff
for currIP in ipArr :
ipVersion = dns.inet.af_for_address(currIP)
if ipVersion == dns.inet.AF_INET:
dnsDatatype = dns.rdatatype.A
elif ipVersion == dns.inet.AF_INET6:
dnsDatatype = dns.rdatatype.AAAA
else :
continue
update.add(dns.reversename.from_address(currIP), TTL_short, dns.rdatatype.PTR, host_local)
update.add(host_local, TTL_short, dnsDatatype, currIP)
## add services
for service in discoverServices(ipArr) :
service_type = service[0] + ".local"
service_type_host = host + "." + service_type
port = service[1]
# add the service
txtrecord = ""
if (len(service) == 2 or service[2] == "") :
txtrecord = chr(0)
else :
for i in range(2,len(service)) :
txtrecord += " " + service[i]
if (DEBUG) :
txtrecord += " SPC_STATE=sleeping"
update.add(service_type_host, TTL_long, dns.rdatatype.TXT, txtrecord)
# device-info service gets a txt record only
if (service_type != "device-info._tcp.local") :
update.add('_services._dns-sd._udp.local', TTL_long, dns.rdatatype.PTR, service_type)
update.add(service_type, TTL_long, dns.rdatatype.PTR, service_type_host)
update.add(service_type_host, TTL_short, dns.rdatatype.SRV, "0 0 " + port + " " + host_local)
## add edns options
# http://files.dns-sd.org/draft-sekar-dns-ul.txt
# 2: Lease Time in seconds
leaseTimeOption = dns.edns.GenericOption(2, struct.pack("!L", TTL))
# http://tools.ietf.org/id/draft-cheshire-edns0-owner-option-00.txt
# 4: edns owner option (MAC addr for WOL Magic packet)
cleanMAC = hwAddr.replace(":", "")
ownerOption = dns.edns.GenericOption(4, ("0000" + cleanMAC).decode('hex_codec'))
update.use_edns(edns=True, ednsflags=TTL_long, options=[leaseTimeOption, ownerOption])
if (DEBUG) :
print "-sendUpdateForInterface: request: ", update
# send request to proxy
try:
if (DEBUG) :
print "-sendUpdateForInterface: sending update to " + proxy['ip']
response = dns.query.udp(update, proxy['ip'], timeout=10, port=int(proxy['port']))
if (DEBUG) :
print "-sendUpdateForInterface: response: ", response
rcode = response.rcode()
if rcode != dns.rcode.NOERROR:
print "Unable to register with SleepProxy " + proxy['name'] + " (" + proxy['ip'] + ":" + proxy['port'] + ") - Errcode: " + rcode
print response
except DNSException, e:
print "Unable to register with SleepProxy " + proxy['name'] + " (" + proxy['ip'] + ":" + proxy['port'] + ")"
print e.__class__, e