lIntroductionPoints

support_onions.py

@@ -9,6 +9,16 @@ import socket
 import select
 import time
 
+import getpass
+if False:
+    import cepa as stem
+    from cepa.control import Controller
+    from cepa.connection import MissingPassword
+else:
+    import stem
+    from stem.control import Controller
+    from stem.connection import MissingPassword
+
 global LOG
 import logging
 import warnings
@@ -17,6 +27,77 @@ LOG = logging.getLogger()
 
 bHAVE_TORR = shutil.which('tor-resolve')
 
+# maybe we should check these each time but we
+# got them by sorting bad relays in the wild
+# we'll keep a copy here
+yKNOWN_NODNS = """
+---
+  - 0x0.is
+  - a9.wtf
+  - aklad5.com
+  - artikel5ev.de
+  - arvanode.net
+  - dodo.pm
+  - dra-family.github.io
+  - eraldonion.org
+  - erjan.net
+  - galtland.network
+  - ineapple.cx
+  - lonet.sh
+  - moneneis.de
+  - olonet.sh
+  - or-exit-2.aa78i2efsewr0neeknk.xyz
+  - or.wowplanet.de
+  - ormycloud.org
+  - plied-privacy.net
+  - redacted.org
+  - rification-for-nusenu.net
+  - rofl.cat
+  - rsv.ch
+  - sv.ch
+  - thingtohide.nl
+  - tikel10.org
+  - tor.wowplanet.de
+  - tor-exit-2.aa78i2efsewr0neeknk.xyz
+  - tor-exit-3.aa78i2efsewr0neeknk.xyz
+  - torix-relays.org
+  - tse.com
+  - tuxli.org
+  - w.digidow.eu
+  - w.cccs.de
+"""
+
+oSTEM_CONTROLER = None
+def oGetStemController(log_level=10, sock_or_pair='/run/tor/control'):
+
+    global oSTEM_CONTROLER
+    if oSTEM_CONTROLER: return oSTEM_CONTROLER
+    from stem.util.log import Runlevel
+    Runlevel = log_level
+
+    if os.path.exists(sock_or_pair):
+        LOG.info(f"controller from socket {sock_or_pair}")
+        controller = Controller.from_socket_file(path=sock_or_pair)
+    else:
+        if ':' in sock_or_pair:
+            port = sock_or_pair.split(':')[1]
+        else:
+            port = sock_or_pair
+        try:
+           port = int(port)
+        except: port = 9051
+        LOG.info(f"controller from port {port}")
+        controller = Controller.from_port(port=port)
+    try:
+        controller.authenticate()
+    except (Exception, MissingPassword):
+        sys.stdout.flush()
+        p = getpass.unix_getpass(prompt='Controller Password: ', stream=sys.stderr)
+        controller.authenticate(p)
+    oSTEM_CONTROLER = controller
+    LOG.debug(f"{controller}")
+    return oSTEM_CONTROLER 
+
 def bAreWeConnected():
     # FixMe: Linux only
     sFile = f"/proc/{os.getpid()}/net/route"
@@ -28,13 +109,13 @@ def bAreWeConnected():
         i += 1
     return i > 0
 
-def sMapaddressResolv(target, iPort=9051):
+def sMapaddressResolv(target, iPort=9051, log_level=10):
     if not stem:
         LOG.warn('please install the stem Python package')
         return ''
 
     try:
-        controller = oGetStemController(log_level=10)
+        controller = oGetStemController(log_level=log_level)
 
         map_dict = {"0.0.0.0": target}
         map_ret = controller.map_address(map_dict)
@@ -44,30 +125,94 @@ def sMapaddressResolv(target, iPort=9051):
         LOG.exception(e)
     return ''
 
-def lIntroductionPoints(target, iPort=9051):
-    if stem == False: return ''
-    from stem import StreamStatus
-    from stem.control import EventType, Controller
-    import getpass
+def vwait_for_controller(controller, wait_boot=10):
+    if bAreWeConnected() is False:
+        raise SystemExit("we are not connected")
+    percent = i = 0
+    # You can call this while boostrapping
+    while percent < 100 and i < wait_boot:
+        bootstrap_status = controller.get_info("status/bootstrap-phase")
+        progress_percent = re.match('.* PROGRESS=([0-9]+).*', bootstrap_status)
+        percent = int(progress_percent.group(1))
+        LOG.info(f"Bootstrapping {percent}%")
+        time.sleep(5)
+        i += 5
+
+def bin_to_hex(raw_id, length=None):
+    if length is None: length = len(raw_id)
+    res = ''.join('{:02x}'.format(raw_id[i]) for i in range(length))
+    return res.upper()
+
+def lIntroductionPoints(controller=None, lOnions=[], itimeout=120, log_level=10):
+    """now working !!! stem 1.8.x timeout must be huge >120"""
+    try:
+        from cryptography.utils import int_from_bytes
+    except ImportError:
+        # guessing - not in the current cryptography but stem expects it
+        def int_from_bytes(**args): return int.to_bytes(*args)
+        cryptography.utils.int_from_bytes = int_from_bytes
+    # this will fai if the trick above didnt work
+    from stem.prereq import is_crypto_available
+    is_crypto_available(ed25519 = True)
+    
+    from stem.descriptor.hidden_service import HiddenServiceDescriptorV3
+    from stem.client.datatype import LinkByFingerprint
+
+    if type(lOnions) not in [set, tuple, list]:
+        lOnions = list(lOnions)
+    if controller is None:
+        controller = oGetStemController(log_level=log_level)
     l = []
     try:
-        controller = oGetStemController(log_level=10)
-        desc = controller.get_hidden_service_descriptor(target)
-        l = desc.introduction_points()
-        if l:
-            LOG.warn(f"{elt} NO introduction points for {target}\n")
-            return l
-        LOG.debug(f"{elt} len(l) introduction points for {target}")
-
-        for introduction_point in l:
-            l.append('%s:%s => %s' % (introduction_point.address,
-                                    introduction_point.port,
-                                    introduction_point.identifier))
+      for elt in lOnions:
+        LOG.info(f"controller.get_hidden_service_descriptor {elt}")
+        desc = controller.get_hidden_service_descriptor(elt,
+                                                        await_result=True,
+                                                        timeout=itimeout)
+#        LOG.log(40, f"{dir(desc)} get_hidden_service_descriptor")
+        # timeouts 20 sec
+        # mistakenly a HSv2 descriptor
+        hs_address = HiddenServiceDescriptorV3.from_str(str(desc))  # reparse as HSv3
+        oInnerLayer = hs_address.decrypt(elt)
+#        LOG.log(40, f"{dir(oInnerLayer)}")
 
+        # IntroductionPointV3
+        n = oInnerLayer.introduction_points
+        if not n:
+            LOG.warn(f"NO introduction points for {elt}")
+            continue
+        LOG.info(f"{elt} {len(n)} introduction points")
+        lp = []
+        for introduction_point in n:
+            for linkspecifier in introduction_point.link_specifiers:
+                if isinstance(linkspecifier, LinkByFingerprint):
+#                    LOG.log(40, f"Getting fingerprint for {linkspecifier}")
+                    if hasattr(linkspecifier, 'fingerprint'):
+                        assert len(linkspecifier.value) == 20
+                        lp += [bin_to_hex(linkspecifier.value)]
+        LOG.info(f"{len(lp)} introduction points for {elt}")
+        l += lp
     except Exception as e:
       LOG.exception(e)
     return l
 
+def zResolveDomain(domain):
+    try:
+        ip = sTorResolve(domain)
+    except Exception as e:
+        ip = ''
+    if ip == '':
+        try:
+            lpair = getaddrinfo(domain, 443)
+        except Exception as e:
+            LOG.warn("{e}")
+            lpair = None
+        if lpair is None:
+            LOG.warn(f"TorResolv and getaddrinfo failed for {domain}")
+            return ''
+        ip = lpair[0]
+    return ip
+
 def sTorResolve(target,
                 verbose=False,
                 sHost='127.0.0.1',
@@ -76,7 +221,9 @@ def sTorResolve(target,
                 SOCK_TIMEOUT_TRIES=3,
                 ):
     MAX_INFO_RESPONSE_PACKET_LENGTH = 8
-
+    if '@' in target:
+        LOG.warn(f"sTorResolve failed invalid hostname {target}" )
+        return ''
     target = target.strip('/')
     seb = b"\o004\o360\o000\o000\o000\o000\o000\o001\o000"
     seb = b"\x04\xf0\x00\x00\x00\x00\x00\x01\x00"
@@ -122,7 +269,7 @@ def sTorResolve(target,
             sLabel = "5 No reply #"
         else:
             sLabel = "5 No data #"
-        LOG.info(sLabel +f"{i} from {sHost} {iPort}" )
+        LOG.info(sLabel +f"{i} on {sHost}:{iPort}" )
         sock.close()
         raise SystemExit(5)
     
@@ -134,7 +281,7 @@ def sTorResolve(target,
         return f"{data[4]}.{data[5]}.{data[6]}.{data[7]}"
     else:
         # 91
-        LOG.warn(f"tor-resolve failed for {target} from {sHost} {iPort}" )
+        LOG.warn(f"tor-resolve failed for {target} on {sHost}:{iPort}" )
 
     os.system(f"tor-resolve -4 {target} > /tmp/e 2>/dev/null")
 #    os.system("strace tor-resolve -4 "+target+" 2>&1|grep '^sen\|^rec'")
@@ -200,3 +347,45 @@ def icheck_torrc(sFile, oArgs):
         print('VirtualAddrNetworkIPv4 172.16.0.0/12')
     return 0
 
+def lExitExcluder(oArgs, iPort=9051, log_level=10):
+    """
+    https://raw.githubusercontent.com/nusenu/noContactInfo_Exit_Excluder/main/exclude_noContactInfo_Exits.py
+    """
+    if not stem:
+        LOG.warn('please install the stem Python package')
+        return ''
+    LOG.debug('lExcludeExitNodes')
+
+    try:
+        controller = oGetStemController(log_level=log_level)
+        # generator
+        relays = controller.get_server_descriptors()
+    except Exception as e:
+        LOG.error(f'Failed to get relay descriptors {e}')
+        return None
+
+    if controller.is_set('ExcludeExitNodes'):
+        LOG.info('ExcludeExitNodes is in use already.')
+        return None
+
+    exit_excludelist=[]
+    LOG.debug("Excluded exit relays:")
+    for relay in relays:
+        if relay.exit_policy.is_exiting_allowed() and not relay.contact:
+            if is_valid_fingerprint(relay.fingerprint):
+                exit_excludelist.append(relay.fingerprint)
+                LOG.debug("https://metrics.torproject.org/rs.html#details/%s" % relay.fingerprint)
+            else:
+                LOG.warn('Invalid Fingerprint: %s' % relay.fingerprint)
+
+    try:
+        controller.set_conf('ExcludeExitNodes', exit_excludelist)
+        LOG.info('Excluded a total of %s exit relays without ContactInfo from the exit position.' % len(exit_excludelist))
+    except Exception as e:
+        LOG.exception('ExcludeExitNodes ' +str(e))
+    return exit_excludelist
+
+if __name__ == '__main__':
+    target = 'duckduckgogg42xjoc72x3sjasowoarfbgcmvfimaftt6twagswzczad'
+    controller = oGetStemController(log_level=10)
+    lIntroductionPoints(controller, [target], itimeout=120)