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-rwxr-xr-xretiolum/hosts/.scripts/retiolum.py312
1 files changed, 312 insertions, 0 deletions
diff --git a/retiolum/hosts/.scripts/retiolum.py b/retiolum/hosts/.scripts/retiolum.py
new file mode 100755
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+++ b/retiolum/hosts/.scripts/retiolum.py
@@ -0,0 +1,312 @@
+#!/usr/bin/python2
+import sys, os, time, socket, subprocess, thread, random, Queue, binascii, logging #these should all be in the stdlib
+import sqlite3
+from Crypto.PublicKey import RSA
+from optparse import OptionParser
+
+def pub_encrypt(netname, hostname_t, text): #encrypt data with public key
+ conn = sqlite3.connect("/etc/tinc/" + netname + "/hosts.sqlite")
+ c = conn.cursor()
+ hostname_tupel = [hostname_t]
+ pubkey = ""
+ try:
+ c.execute("select r_pub from hosts where hostname=?", hostname_tupel)
+ except:
+ logging.error("RSA_Encryption: Database error")
+ return -1
+ for i in c:
+ pubkey += i[0]
+ c.close
+ rsa_pub = RSA.importKey(pubkey)
+ enc_text = rsa_pub.encrypt(text, 0) #seems like RSA_encrypt needs no random
+ return(binascii.b2a_base64(enc_text[0]))
+
+def priv_decrypt(netname, enc_data): #decrypt data with private key
+ raw_privkey = open("/etc/tinc/" + netname + "/rsa_key.priv", "r")
+ r_privkey = raw_privkey.readlines()
+ privkey = ""
+ for i in xrange(len(r_privkey)):
+ privkey += r_privkey[i]
+ raw_privkey.close()
+
+
+ rsa_priv = RSA.importKey(privkey)
+ dec_text = rsa_priv.decrypt(binascii.a2b_base64(enc_data))
+ return(dec_text)
+
+def database2hostfiles(netname): #make hostsfiles from database
+ conn = sqlite3.connect("/etc/tinc/" + netname + "/hosts.sqlite")
+ c = conn.cursor()
+ c.execute("select * from hosts")
+ for i in c:
+ host = open("/etc/tinc/" + netname + "/hosts/" + i[0], "w")
+ host.write(i[2])
+ host.write(i[3])
+ host.write(i[1])
+ host.write(i[5])
+ host.close()
+ c.close()
+
+def address2hostfile(netname, hostname, address): #adds address to hostsfile or restores it if address is empty
+ tupel = [hostname,]
+ conn = sqlite3.connect("/etc/tinc/" + netname + "/hosts.sqlite")
+ c = conn.cursor()
+ c.execute("select * from hosts where hostname=?", tupel)
+ for i in c:
+ host = open("/etc/tinc/" + netname + "/hosts/" + i[0], "w")
+ if address != "":
+ host.write("Address = " + address + "\n")
+ host.write(i[2])
+ host.write(i[3])
+ host.write(i[1])
+ host.write(i[5])
+ host.close()
+ c.close()
+ logging.info("sending ALRM to tinc deamon!")
+ tincd_ALRM = subprocess.call(["tincd -n " + netname + " --kill=HUP" ],shell=True)
+
+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
+
+
+####Thread functions
+
+
+def sendthread(netname, hostname, 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(netname, hostname, 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")
+ 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")
+ 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")
+ except:
+ logging.error("recv: socket init failed")
+ time.sleep(10)
+
+def timeoutthread(netname, 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":
+ hostslist.append([curhost[1], curhost[2], time.time()])
+ address2hostfile(netname, curhost[1], curhost[2])
+ logging.info("adding host to hostslist")
+ elif curhost[0] == "tst":
+ line = findhostinlist(hostslist, curhost[1], curhost[2])
+ if line != -1:
+ hostslist[line][2] = time.time()
+ logging.debug("timeout: refreshing timestamp")
+ else:
+ authfifo.put(["Stage1", curhost[1], curhost[2]])
+ logging.info("timeout: writing to auth")
+
+ else:
+ i = 0
+ while i < len(hostslist):
+ if time.time() - hostslist[i][2] > 60:
+ address2hostfile(netname, hostslist[i][0], "")
+ del hostslist[i]
+ logging.info("timeout: deleting dead host")
+ else:
+ i += 1
+ time.sleep(2)
+
+def auththread(netname, hostname, authfifo, sendfifo, timeoutfifo): #manages authentication with clients (bruteforce sensitve, should be fixed)
+ authlist = [] #hostname, ip, Challenge, timestamp
+
+
+ while True:
+ 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(netname, curauth[1], "#" + hostname + "#" + str(challengenum) + "#")
+ authlist.append([curauth[1], curauth[2], challengenum, time.time()])
+ else:
+ encrypted_message = pub_encrypt(netname, 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")
+
+ if curauth[0] == "Stage2":
+ dec_message = priv_decrypt(netname, curauth[3])
+ splitmes = dec_message.split("#")
+ if splitmes[0] == "":
+ encrypted_message = pub_encrypt(netname, 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")
+
+ if curauth[0] == "Stage3":
+ line = findhostinlist(authlist, curauth[1], curauth[2])
+ if line != -1:
+ dec_message = priv_decrypt(netname, curauth[3])
+ splitmes = dec_message.split("#")
+ logging.info("auth: checking challenge")
+ if splitmes[0] == "" and 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 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)
+
+#Program starts here!
+#netname = "retiolum"
+#hostname = "miefda901"
+
+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("-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")
+(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
+
+
+#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)
+
+wget = subprocess.call(["wget vpn.miefda.org/hosts.sqlite -O /etc/tinc/" + netname + "/hosts.sqlite"], shell=True)
+database2hostfiles(netname)
+start_tincd = subprocess.call(["tincd -n " + netname ],shell=True)
+
+sendfifo = Queue.Queue() #sendtext
+authfifo = Queue.Queue() #Stage{1, 2, 3} hostname ip enc_data
+timeoutfifo = Queue.Queue() #State{tst, add} hostname ip
+
+thread_recv = thread.start_new_thread(recvthread, (netname, hostname, timeoutfifo, authfifo))
+thread_send = thread.start_new_thread(sendthread, (netname, hostname, sendfifo, option.ghost))
+thread_timeout = thread.start_new_thread(timeoutthread, (netname, timeoutfifo, authfifo))
+thread_auth = thread.start_new_thread(auththread, (netname, hostname, authfifo, sendfifo, timeoutfifo))
+
+##dirty while function, SHOULD BE IMPROVED
+while True:
+ time.sleep(10)