diff options
| -rwxr-xr-x | retiolum/hosts/.scripts/tinc_multicast/retiolum.py | 223 |
1 files changed, 128 insertions, 95 deletions
diff --git a/retiolum/hosts/.scripts/tinc_multicast/retiolum.py b/retiolum/hosts/.scripts/tinc_multicast/retiolum.py index cd226fc9..5191ce2c 100755 --- a/retiolum/hosts/.scripts/tinc_multicast/retiolum.py +++ b/retiolum/hosts/.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) |