summaryrefslogtreecommitdiffstats
path: root/.graveyard/tinc_multicast/retiolum.py
diff options
context:
space:
mode:
Diffstat (limited to '.graveyard/tinc_multicast/retiolum.py')
-rwxr-xr-x.graveyard/tinc_multicast/retiolum.py349
1 files changed, 349 insertions, 0 deletions
diff --git a/.graveyard/tinc_multicast/retiolum.py b/.graveyard/tinc_multicast/retiolum.py
new file mode 100755
index 00000000..8cf57471
--- /dev/null
+++ b/.graveyard/tinc_multicast/retiolum.py
@@ -0,0 +1,349 @@
+#!/usr/bin/python2
+import sys, os, time, signal, socket, subprocess, thread, random, Queue, binascii, logging, hashlib, urllib2 #these should all be in the stdlib
+from optparse import OptionParser
+
+def pub_encrypt(hostname_t, text): #encrypt data with public key
+ logging.debug("encrypt: " + text)
+ if hostname_t.find("`") != -1: return(-1)
+ try:
+ enc_text = subprocess.os.popen("echo '" + text + "' | openssl rsautl -pubin -inkey /etc/tinc/" + netname + "/hosts/.pubkeys/" + hostname_t + " -encrypt | base64 -w0")
+ return(enc_text.read())
+ except:
+ return(-1)
+
+def priv_decrypt(enc_data): #decrypt data with private key
+ if enc_data.find("`") != -1: return(-1)
+ dec_text = subprocess.os.popen("echo '" + enc_data + "' | base64 -d | openssl rsautl -inkey /etc/tinc/" + netname + "/rsa_key.priv -decrypt")
+ return(dec_text.read())
+
+def address2hostfile(hostname, address): #adds address to hostsfile or restores it if address is empty
+ hostfile = "/etc/tinc/" + netname + "/hosts/" + hostname
+ addr_file = open(hostfile, "r")
+ addr_cache = addr_file.readlines()
+ addr_file.close()
+ if address != "":
+ addr_cache.insert(0, "Address = " + address + "\n")
+ addr_file = open(hostfile, "w")
+ addr_file.writelines(addr_cache)
+ addr_file.close
+ logging.info("sending SIGHUP to tinc deamon!")
+ tincd_ALRM = subprocess.call(["tincd -n " + netname + " --kill=HUP" ],shell=True)
+ else:
+ recover = subprocess.os.popen("tar xzf /etc/tinc/" + netname + "/hosts/hosts.tar.gz -C /etc/tinc/" + netname + "/hosts/ " + hostname)
+
+def findhostinlist(hostslist, hostname, ip): #finds host + ip in list
+ for line in xrange(len(hostslist)):
+ if hostname == hostslist[line][0] and ip == hostslist[line][1]:
+ return line
+ return -1 #nothing found
+
+def getHostname(netname):
+ tconf = open("/etc/tinc/" + netname + "/tinc.conf", "r")
+ feld = tconf.readlines()
+ tconf.close()
+ for x in feld:
+ if x.startswith("Name"):
+ return str(x.partition("=")[2].lstrip().rstrip("\n"))
+
+ print("hostname not found!")
+ return -1 #nothing found
+
+def get_hostfiles(url_files, url_md5sum):
+ try:
+ get_hosts_tar = urllib2.urlopen(url_files)
+ get_hosts_md5 = urllib2.urlopen(url_md5sum)
+ hosts_tar = get_hosts_tar.read()
+ hosts_md5 = get_hosts_md5.read()
+
+ if str(hosts_md5) == str(hashlib.md5(hosts_tar).hexdigest() + " hosts.tar.gz\n"):
+ hosts = open("/etc/tinc/" + netname + "/hosts/hosts.tar.gz", "w")
+ hosts.write(hosts_tar)
+ hosts.close()
+ else:
+ logging.error("hosts.tar.gz md5sum check failed!")
+ except:
+ logging.error("hosts file download failed!")
+
+
+####Thread functions
+
+
+def sendthread(sendfifo, ghostmode): #send to multicast, sends keep alive packets
+ while True:
+ try:
+ #{socket init start
+ ANY = "0.0.0.0"
+ SENDPORT = 23542
+ MCAST_ADDR = "224.168.2.9"
+ MCAST_PORT = 1600
+
+ sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM, socket.IPPROTO_UDP) #initalize socket with udp
+ sock.bind((ANY,SENDPORT)) #now bound to Interface and Port
+ sock.setsockopt(socket.IPPROTO_IP, socket.IP_MULTICAST_TTL, 255) #activate multicast
+ #}socket init end
+
+ if ghostmode == 0:
+
+ i = 9
+
+ while True:
+ i += 1
+ if not sendfifo.empty():
+ sock.sendto(sendfifo.get(), (MCAST_ADDR,MCAST_PORT) )
+ logging.info("send: sending sendfifo")
+ else:
+ time.sleep(1)
+ if i == 10:
+ sock.sendto("#Stage1#" + netname + "#" + hostname + "#", (MCAST_ADDR,MCAST_PORT) )
+ logging.debug("send: sending keep alive")
+ i = 0
+ else:
+ while True:
+ if not sendfifo.empty():
+ sock.sendto(sendfifo.get(), (MCAST_ADDR,MCAST_PORT) )
+ logging.info("send: sending sendfifo")
+ else:
+ time.sleep(1)
+
+ except:
+ logging.error("send: socket init failed")
+ time.sleep(10)
+
+
+
+def recvthread(timeoutfifo, authfifo): #recieves input from multicast, send them to timeout or auth
+ while True:
+ try:
+ ANY = "0.0.0.0"
+ MCAST_ADDR = "224.168.2.9"
+ MCAST_PORT = 1600
+
+ sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM, socket.IPPROTO_UDP) #create a UDP socket
+ sock.setsockopt(socket.SOL_SOCKET,socket.SO_REUSEADDR,1) #allow multiple sockets to use the same PORT number
+ sock.bind((ANY,MCAST_PORT)) #Bind to the port that we know will receive multicast data
+ sock.setsockopt(socket.IPPROTO_IP, socket.IP_MULTICAST_TTL, 255) #tell the kernel that we are a multicast socket
+
+
+ status = sock.setsockopt(socket.IPPROTO_IP,
+ socket.IP_ADD_MEMBERSHIP, #Tell the kernel that we want to add ourselves to a multicast group
+ socket.inet_aton(MCAST_ADDR) + socket.inet_aton(ANY)); #The address for the multicast group is the third param
+
+ while True:
+ while True:
+
+ try:
+ data, addr = sock.recvfrom(1024)
+ ip, port = addr
+ break
+ except socket.error, e:
+ pass
+
+ logging.debug("recv: got data")
+ dataval = data.split("#")
+ if dataval[0] == "":
+ if dataval[2] == netname:
+ if dataval[1] == "Stage1":
+ if dataval[3] != hostname:
+ timeoutfifo.put(["tst", dataval[3], ip])
+ logging.info("recv: got Stage1: writing data to timeout")
+ logging.debug("recv: ;tst;" + dataval[3] + ";" + ip)
+ if dataval[1] == "Stage2":
+ if dataval[3] == hostname:
+ authfifo.put([dataval[1], dataval[3], ip, dataval[4]])
+ logging.info("recv: got Stage2: writing data to auth")
+ logging.debug("recv: ;" + dataval[1] + ";" + dataval[3] + ";" + ip + ";" + dataval[4])
+ if dataval[1] == "Stage3":
+ if dataval[3] != hostname:
+ authfifo.put([dataval[1], dataval[3], ip, dataval[4]])
+ logging.info("recv: got Stage3: writing data to auth")
+ logging.debug("recv: ;" + dataval[1] + ";" + dataval[3] + ";" + ip + ";" + dataval[4])
+ except:
+ logging.error("recv: socket init failed")
+ time.sleep(10)
+
+def timeoutthread(timeoutfifo, authfifo): #checks if the hostname is already in the list, deletes timeouted nodes
+# hostslist = [] #hostname, ip, timestamp
+
+ while True:
+ if not timeoutfifo.empty():
+ curhost = timeoutfifo.get()
+ if curhost[0] == "add":
+ with hostslock:
+ hostslist.append([curhost[1], curhost[2], time.time()])
+ address2hostfile(curhost[1], curhost[2])
+ logging.info("adding host to hostslist")
+ elif curhost[0] == "tst":
+ with hostslock:
+ line = findhostinlist(hostslist, curhost[1], curhost[2])
+ if line != -1:
+ hostslist[line][2] = time.time()
+ logging.debug("timeout: refreshing timestamp of " + hostslist[line][0])
+ else:
+ authfifo.put(["Stage1", curhost[1], curhost[2]])
+ logging.info("timeout: writing to auth")
+
+ else:
+ i = 0
+ with hostslock:
+ while i < len(hostslist):
+ if time.time() - hostslist[i][2] > 60:
+ address2hostfile(hostslist[i][0], "")
+ hostslist.remove(hostslist[i])
+ logging.info("timeout: deleting dead host")
+ else:
+ i += 1
+ time.sleep(2)
+
+def auththread(authfifo, sendfifo, timeoutfifo): #manages authentication with clients (bruteforce sensitve, should be fixed)
+ authlist = [] #hostname, ip, Challenge, timestamp
+
+
+ while True:
+ try:
+ if not authfifo.empty():
+ logging.debug("auth: authfifo is not empty")
+ curauth = authfifo.get()
+ if curauth[0] == "Stage1":
+ line = findhostinlist(authlist, curauth[1], curauth[2])
+ if line == -1:
+ challengenum = random.randint(0,65536)
+ encrypted_message = pub_encrypt(curauth[1], "#" + hostname + "#" + str(challengenum) + "#")
+ authlist.append([curauth[1], curauth[2], challengenum, time.time()])
+ else:
+ encrypted_message = pub_encrypt(authlist[line][0], "#" + hostname + "#" + str(authlist[line][2]) + "#")
+ if encrypted_message == -1:
+ logging.info("auth: RSA Encryption Error")
+ else:
+ sendtext = "#Stage2#" + netname + "#" + curauth[1] + "#" + encrypted_message + "#"
+ sendfifo.put(sendtext)
+ logging.info("auth: got Stage1 sending now Stage2")
+ logging.debug("auth: " + sendtext)
+
+ if curauth[0] == "Stage2":
+ dec_message = priv_decrypt(curauth[3])
+ splitmes = dec_message.split("#")
+ if splitmes[0] == "":
+ encrypted_message = pub_encrypt(splitmes[1], "#" + splitmes[2] + "#")
+ if encrypted_message == -1:
+ logging.error("auth: RSA Encryption Error")
+ else:
+ sendtext = "#Stage3#" + netname + "#" + curauth[1] + "#" + encrypted_message + "#"
+ sendfifo.put(sendtext)
+ logging.info("auth: got Stage2 sending now Stage3")
+ logging.debug("auth: " + sendtext)
+
+ if curauth[0] == "Stage3":
+ line = findhostinlist(authlist, curauth[1], curauth[2])
+ if line != -1:
+ dec_message = priv_decrypt(curauth[3])
+ splitmes = dec_message.split("#")
+ logging.info("auth: checking challenge")
+ if splitmes[0] == "":
+ if splitmes[1] == str(authlist[line][2]):
+ timeoutfifo.put(["add", curauth[1], curauth[2]])
+ del authlist[line]
+ logging.info("auth: Stage3 checked, sending now to timeout")
+ else: logging.error("auth: challenge checking failed")
+ else: logging.error("auth: decryption failed")
+
+ else:
+ i = 0
+ while i < len(authlist):
+ if time.time() - authlist[i][3] > 120:
+ del authlist[i]
+ logging.info("auth: deleting timeoutet auth")
+ else:
+ i += 1
+ time.sleep(1)
+ except:
+ logging.error("auth: thread crashed")
+
+def process_start(): #starting of the process
+ #download and untar hostfile
+ logging.info("downloading hostfiles")
+ get_hostfiles("http://vpn.miefda.org/hosts.tar.gz", "http://vpn.miefda.org/hosts.md5") #Currently Hardcoded, should be editable by config or parameter
+ tar = subprocess.call(["tar -xzf /etc/tinc/" + netname + "/hosts/hosts.tar.gz -C /etc/tinc/" + netname + "/hosts/"], shell=True)
+
+ #initialize fifos
+ sendfifo = Queue.Queue() #sendtext
+ authfifo = Queue.Queue() #Stage{1, 2, 3} hostname ip enc_data
+ timeoutfifo = Queue.Queue() #State{tst, add} hostname ip
+
+ #start threads
+ thread_recv = thread.start_new_thread(recvthread, (timeoutfifo, authfifo))
+ thread_send = thread.start_new_thread(sendthread, (sendfifo, option.ghost))
+ thread_timeout = thread.start_new_thread(timeoutthread, (timeoutfifo, authfifo))
+ thread_auth = thread.start_new_thread(auththread, (authfifo, sendfifo, timeoutfifo))
+
+def process_restart(signum, frame):
+ logging.error("root: restarting process")
+ with hostslock:
+ del hostslist[:]
+ #download and untar hostfile
+ logging.info("downloading hostfiles")
+ get_hostfiles("http://vpn.miefda.org/hosts.tar.gz", "http://vpn.miefda.org/hosts.md5") #Currently Hardcoded, should be editable by config or parameter
+ tar = subprocess.call(["tar -xzf /etc/tinc/" + netname + "/hosts/hosts.tar.gz -C /etc/tinc/" + netname + "/hosts/"], shell=True)
+
+ logging.info("sending SIGHUP")
+ tincd_ALRM = subprocess.call(["tincd -n " + netname + " --kill=HUP" ],shell=True)
+
+def kill_process(signum, frame):
+ logging.error("got SIGINT/SIGTERM exiting now")
+ os.remove("/var/lock/retiolum." + netname)
+ if option.tinc != False:
+ stop_tincd = subprocess.call(["tincd -n " + netname + " -k"],shell=True)
+ sys.exit(0)
+
+#Program starts here!
+
+parser = OptionParser()
+parser.add_option("-n", "--netname", dest="netname", help="the netname of the tinc network")
+parser.add_option("-H", "--hostname", dest="hostname", default="default", help="your nodename, if not given, it will try too read it from tinc.conf")
+parser.add_option("-t", "--timeout", dest="timeout", default=65536, help="timeout after retiolum gets restartet, default is 65536")
+parser.add_option("-d", "--debug", dest="debug", default="0", help="debug level: 0,1,2,3 if empty debug level=0")
+parser.add_option("-g", "--ghost", action="store_true", dest="ghost", default=False, help="deactivates active sending, keeps you anonymous in the public network")
+parser.add_option("-T", "--Tinc", action="store_true", dest="tinc", default=False, help="starts tinc with this script")
+(option, args) = parser.parse_args()
+
+if option.netname == None:
+ parser.error("Netname is required, use -h for help!")
+if option.hostname == "default":
+ option.hostname = getHostname(option.netname)
+
+hostname = option.hostname
+netname = option.netname
+hostslist = []
+hostslock = thread.allocate_lock()
+
+#set process name
+if not os.path.exists("/var/lock/retiolum." + netname):
+ pidfile = open("/var/lock/retiolum." + netname, "w")
+ pidfile.write(str(os.getpid()))
+ pidfile.close()
+else:
+ logging.error("pidfile already exists")
+ sys.exit(0)
+
+#Logging stuff
+LEVELS = {'3' : logging.DEBUG,
+ '2' : logging.INFO,
+ '1' : logging.ERROR,
+ '0' : logging.CRITICAL}
+
+level_name = option.debug
+level = LEVELS.get(level_name, logging.NOTSET)
+logging.basicConfig(level=level)
+
+#normally tinc doesnt start with retiolum
+if option.tinc != False:
+ start_tincd = subprocess.call(["tincd -n " + netname ],shell=True)
+
+process_start()
+
+signal.signal(signal.SIGTERM, kill_process)
+signal.signal(signal.SIGINT, kill_process)
+signal.signal(signal.SIGUSR1, process_restart)
+
+while True:
+ time.sleep(float(option.timeout))
+ process_restart(0, 0)
generated by cgit v1.2.3 (git 2.25.1) at 2024-05-17 09:08:20 +0000