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-rwxr-xr-x.scripts/tinc_multicast/retiolum.py223
1 files changed, 128 insertions, 95 deletions
diff --git a/.scripts/tinc_multicast/retiolum.py b/.scripts/tinc_multicast/retiolum.py
index cd226fc9..5191ce2c 100755
--- a/.scripts/tinc_multicast/retiolum.py
+++ b/.scripts/tinc_multicast/retiolum.py
@@ -1,8 +1,8 @@
#!/usr/bin/python2
-import sys, os, time, socket, subprocess, thread, random, Queue, binascii, logging, hashlib, urllib2 #these should all be in the stdlib
+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(netname, hostname_t, text): #encrypt data with public key
+def pub_encrypt(hostname_t, text): #encrypt data with public key
logging.debug("encrypt: " + text)
if hostname_t.find("`") != -1: return(-1)
try:
@@ -11,12 +11,12 @@ def pub_encrypt(netname, hostname_t, text): #encrypt data with public key
except:
return(-1)
-def priv_decrypt(netname, enc_data): #decrypt data with private key
+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(netname, hostname, address): #adds address to hostsfile or restores it if address is empty
+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()
@@ -26,7 +26,7 @@ def address2hostfile(netname, hostname, address): #adds address to hostsfile or
addr_file = open(hostfile, "w")
addr_file.writelines(addr_cache)
addr_file.close
- logging.info("sending ALRM to tinc deamon!")
+ 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)
@@ -48,7 +48,7 @@ def getHostname(netname):
print("hostname not found!")
return -1 #nothing found
-def get_hostfiles(netname, url_files, url_md5sum):
+def get_hostfiles(url_files, url_md5sum):
try:
get_hosts_tar = urllib2.urlopen(url_files)
get_hosts_md5 = urllib2.urlopen(url_md5sum)
@@ -68,7 +68,7 @@ def get_hostfiles(netname, url_files, url_md5sum):
####Thread functions
-def sendthread(netname, hostname, sendfifo, ghostmode): #send to multicast, sends keep alive packets
+def sendthread(sendfifo, ghostmode): #send to multicast, sends keep alive packets
while True:
try:
#{socket init start
@@ -111,87 +111,90 @@ def sendthread(netname, hostname, sendfifo, ghostmode): #send to multicast, send
-def recvthread(netname, hostname, timeoutfifo, authfifo): #recieves input from multicast, send them to timeout or auth
+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
-
+# 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:
- 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(netname, timeoutfifo, authfifo): #checks if the hostname is already in the list, deletes timeouted nodes
- hostslist = [] #hostname, ip, timestamp
+
+ 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":
- hostslist.append([curhost[1], curhost[2], time.time()])
- address2hostfile(netname, curhost[1], curhost[2])
+ 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":
- 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")
+ 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
- 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
+ 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(netname, hostname, authfifo, sendfifo, timeoutfifo): #manages authentication with clients (bruteforce sensitve, should be fixed)
+def auththread(authfifo, sendfifo, timeoutfifo): #manages authentication with clients (bruteforce sensitve, should be fixed)
authlist = [] #hostname, ip, Challenge, timestamp
@@ -204,10 +207,10 @@ def auththread(netname, hostname, authfifo, sendfifo, timeoutfifo): #manages aut
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) + "#")
+ encrypted_message = pub_encrypt(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]) + "#")
+ encrypted_message = pub_encrypt(authlist[line][0], "#" + hostname + "#" + str(authlist[line][2]) + "#")
if encrypted_message == -1:
logging.info("auth: RSA Encryption Error")
else:
@@ -217,10 +220,10 @@ def auththread(netname, hostname, authfifo, sendfifo, timeoutfifo): #manages aut
logging.debug("auth: " + sendtext)
if curauth[0] == "Stage2":
- dec_message = priv_decrypt(netname, curauth[3])
+ dec_message = priv_decrypt(curauth[3])
splitmes = dec_message.split("#")
if splitmes[0] == "":
- encrypted_message = pub_encrypt(netname, splitmes[1], "#" + splitmes[2] + "#")
+ encrypted_message = pub_encrypt(splitmes[1], "#" + splitmes[2] + "#")
if encrypted_message == -1:
logging.error("auth: RSA Encryption Error")
else:
@@ -232,7 +235,7 @@ def auththread(netname, hostname, authfifo, sendfifo, timeoutfifo): #manages aut
if curauth[0] == "Stage3":
line = findhostinlist(authlist, curauth[1], curauth[2])
if line != -1:
- dec_message = priv_decrypt(netname, curauth[3])
+ dec_message = priv_decrypt(curauth[3])
splitmes = dec_message.split("#")
logging.info("auth: checking challenge")
if splitmes[0] == "":
@@ -255,11 +258,48 @@ def auththread(netname, hostname, authfifo, sendfifo, timeoutfifo): #manages aut
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)
+ sys.exit(0)
+ if option.Tinc != False:
+ stop_tincd = subprocess.call(["tincd -n " + netname + " -k"],shell=True)
+
#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("-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")
@@ -272,6 +312,8 @@ if option.hostname == "default":
hostname = option.hostname
netname = option.netname
+hostslist = []
+hostslock = thread.allocate_lock()
#set process name
pidfile = open("/var/lock/retiolum." + netname, "w")
@@ -288,25 +330,16 @@ level_name = option.debug
level = LEVELS.get(level_name, logging.NOTSET)
logging.basicConfig(level=level)
-#download and untar hostfile
-get_hostfiles(netname, "http://vpn.miefda.org/hosts.tar.gz", "http://vpn.miefda.org/hosts.md5")
-tar = subprocess.call(["tar -xzf /etc/tinc/" + netname + "/hosts/hosts.tar.gz -C /etc/tinc/" + netname + "/hosts/"], shell=True)
-
#normally tinc doesnt start with retiolum
if option.tinc != False:
start_tincd = subprocess.call(["tincd -n " + netname ],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
+process_start()
-#start threads
-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))
+signal.signal(signal.SIGTERM, kill_process)
+signal.signal(signal.SIGINT, kill_process)
+signal.signal(signal.SIGUSR1, process_restart)
-##dirty while function, SHOULD BE IMPROVED
while True:
- time.sleep(10)
+ time.sleep(float(option.timeout))
+ process_restart(0, 0)