You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
123 lines
3.0 KiB
123 lines
3.0 KiB
import socket, os, time, select, urllib, sys
|
|
|
|
def announce():
|
|
|
|
#announces it's existance to other nodes
|
|
sock = socket.socket(socket.AF_INET6, socket.SOCK_DGRAM, socket.IPPROTO_UDP)
|
|
sock.sendto(bericht, ("ff02::1", 13337))
|
|
sock.close()
|
|
|
|
def index():
|
|
|
|
a = ''
|
|
# builds the latest index of all the messages that are on this node
|
|
|
|
def discover(known_devices):
|
|
|
|
# discovers other nodes by listening to the Meshenger announce port
|
|
own_ip = get_ip_adress()
|
|
port = 13337 # where do you expect to get a msg?
|
|
bufferSize = 1024 # whatever you need
|
|
|
|
s = socket.socket(socket.AF_INET6, socket.SOCK_DGRAM, socket.IPPROTO_UDP)
|
|
s.bind(('::', port))
|
|
s.setblocking(0)
|
|
|
|
global devices
|
|
|
|
while True:
|
|
result = select.select([s],[],[])[0][0].recvfrom(bufferSize)
|
|
if result not in known_devices and result[1][0] != own_ip:
|
|
devices.append(result[1][0])
|
|
return
|
|
time.sleep(1)
|
|
|
|
def serve():
|
|
|
|
a = ''
|
|
# serves both the index and the messages on the node over http
|
|
# plus manages the client-side web interface
|
|
|
|
def build_index():
|
|
previous_index = []
|
|
|
|
current_index = os.listdir('msg/')
|
|
|
|
if current_index != previous_index:
|
|
with open('index', 'wb') as index:
|
|
for message in os.listdir('msg/'):
|
|
index.write(message)
|
|
index.write('\n')
|
|
current_index = previous_index
|
|
|
|
def get_index(ip, path):
|
|
|
|
os.system('wget http://['+ip+'%adhoc0]:13338/index -O '+os.path.join(path,'index'))
|
|
|
|
# downloads the index from other nodes and then proceeds to downloads messages it doesn't have already
|
|
|
|
def get_messages(ip, path):
|
|
|
|
with open(os.path.join(path,'index')) as index:
|
|
index = index.read().split('\n')
|
|
for message in index:
|
|
messagepath = os.path.join(os.path.abspath('msg/'), message)
|
|
if not os.path.exists(messagepath):
|
|
print 'downloading', message, 'to', messagepath
|
|
os.system('wget http://['+ip+'%adhoc0]:13338/msg/'+message+' -O '+messagepath)
|
|
|
|
|
|
# s = socket.socket(socket.AF_INET6, socket.SOCK_STREAM)
|
|
|
|
# s.connect(('http://[fe80::6666:b3ff:feeb:68c2%adhoc0]/lijst', 13338))
|
|
|
|
# s.send("GET / HTTP/1.0\r\n\r\n")
|
|
|
|
# while 1:
|
|
# buf = s.recv(1000)
|
|
# if not buf:
|
|
# break
|
|
# sys.stdout.write(buf)
|
|
|
|
# s.close()
|
|
|
|
def ip_to_hash(ip):
|
|
import hashlib
|
|
hasj = hashlib.md5(ip).hexdigest()
|
|
nodepath = os.path.join(os.path.abspath('nodes/'), hasj)
|
|
if not os.path.exists(nodepath):
|
|
os.mkdir(nodepath)
|
|
|
|
return nodepath
|
|
|
|
|
|
def clientsite():
|
|
a = ''
|
|
|
|
#tools
|
|
|
|
def get_ip_adress():
|
|
if not os.path.isfile('interfaceip6adress'):
|
|
os.system('ifconfig -a adhoc0 | grep inet6 > interfaceip6adress')
|
|
|
|
with open('interfaceip6adress', 'r') as a:
|
|
return a.read().split()[2].split('/')[0]
|
|
|
|
while True:
|
|
devices = [] #the list of all the nodes this this node has seen
|
|
print 'discovering devices'
|
|
time.sleep(1)
|
|
discover(devices)
|
|
|
|
if len(devices) > 0:
|
|
print 'found', len(devices),'device(s) retreiving indices'
|
|
for device in devices:
|
|
nodepath = ip_to_hash(device)
|
|
|
|
get_index(device, nodepath)
|
|
|
|
get_messages(device, nodepath)
|
|
print 'updating own index'
|
|
build_index()
|
|
#voeg toe aan eigen index --> build_index()
|
|
time.sleep(5)
|
|
|