Add I2P Support

Merge HelloZeroNet#602

Signed-off-by: Marek Küthe <m.k@mk16.de>

Author: marek22k

README.md

@@ -22,7 +22,9 @@ Decentralized websites using Bitcoin crypto and the BitTorrent network - https:/
  * Password-less [BIP32](https://github.com/bitcoin/bips/blob/master/bip-0032.mediawiki)
    based authorization: Your account is protected by the same cryptography as your Bitcoin wallet
  * Built-in SQL server with P2P data synchronization: Allows easier site development and faster page load times
- * Anonymity: Full Tor network support with .onion hidden services instead of IPv4 addresses
+ * Anonymity:
+   * Full Tor network support with .onion hidden services instead of IPv4 addresses
+   * Full I2P network support with I2P Destinations instead of IPv4 addresses
  * TLS encrypted connections
  * Automatic uPnP port opening
  * Plugin for multiuser (openproxy) support
@@ -132,7 +134,7 @@ https://zeronet.ipfsscan.io/
 
 * File transactions are not compressed
 * No private sites
-
+* ~~No more anonymous than Bittorrent~~ (built-in full Tor and I2P support added)
 
 ## How can I create a ZeroNet site?
 

Vagrantfile

@@ -40,6 +40,6 @@ Vagrant.configure(VAGRANTFILE_API_VERSION) do |config|
   config.vm.provision "shell",
       inline: "sudo apt-get install msgpack-python python-gevent python-pip python-dev -y"
   config.vm.provision "shell",
-      inline: "sudo pip install msgpack --upgrade"
+      inline: "sudo pip install -r requirements.txt --upgrade"
 
 end

requirements.txt

@@ -11,3 +11,4 @@ websocket_client
 gevent-ws
 coincurve
 maxminddb
+i2p.socket

src/Config.py

@@ -88,6 +88,8 @@ def createArguments(self):
             "http://t.publictracker.xyz:6969/announce",
             "https://tracker.lilithraws.cf:443/announce",
             "https://tracker.babico.name.tr:443/announce",
+            "http://opentracker.dg2.i2p/announce",
+            "http://opentracker.skank.i2p/announce"
         ]
         # Platform specific
         if sys.platform.startswith("win"):
@@ -311,6 +313,9 @@ def createArguments(self):
         self.parser.add_argument('--tor_use_bridges', help='Use obfuscated bridge relays to avoid Tor block', action='store_true')
         self.parser.add_argument('--tor_hs_limit', help='Maximum number of hidden services in Tor always mode', metavar='limit', type=int, default=10)
         self.parser.add_argument('--tor_hs_port', help='Hidden service port in Tor always mode', metavar='limit', type=int, default=15441)
+        
+        self.parser.add_argument('--i2p', help='enable: Use only for I2P peers, always: Use I2P for every connection', choices=["disable", "enable", "always"], default='enable')
+        self.parser.add_argument('--i2p_sam', help='I2P SAM API address', metavar='ip:port', default='127.0.0.1:7656')
 
         self.parser.add_argument('--version', action='version', version='ZeroNet %s r%s' % (self.version, self.rev))
         self.parser.add_argument('--end', help='Stop multi value argument parsing', action='store_true')

src/Connection/Connection.py

@@ -133,6 +133,10 @@ def connect(self):
                 self.sock = socks.socksocket()
                 proxy_ip, proxy_port = config.trackers_proxy.split(":")
                 self.sock.set_proxy(socks.PROXY_TYPE_SOCKS5, proxy_ip, int(proxy_port))
+        elif self.ip.endswith(".i2p"):
+            if not self.server.i2p_manager or not self.server.i2p_manager.enabled:
+                raise Exception("Can't connect to I2P addresses, no SAM API present")
+            self.sock = self.server.i2p_manager.createSocket(self.ip, self.port)
         else:
             self.sock = self.createSocket()
 
@@ -344,22 +348,27 @@ def handleStream(self, message, buff):
     # My handshake info
     def getHandshakeInfo(self):
         # No TLS for onion connections
-        if self.ip_type == "onion":
+        if self.ip_type == "onion" or self.ip_type == "i2p":
             crypt_supported = []
         elif self.ip in self.server.broken_ssl_ips:
             crypt_supported = []
         else:
             crypt_supported = CryptConnection.manager.crypt_supported
         # No peer id for onion connections
-        if self.ip_type == "onion" or self.ip in config.ip_local:
+        if self.ip_type == "onion" or self.ip_type == "i2p" or self.ip in config.ip_local:
             peer_id = ""
         else:
             peer_id = self.server.peer_id
         # Setup peer lock from requested onion address
-        if self.handshake and self.handshake.get("target_ip", "").endswith(".onion") and self.server.tor_manager.start_onions:
-            self.target_onion = self.handshake.get("target_ip").replace(".onion", "")  # My onion address
-            if not self.server.tor_manager.site_onions.values():
-                self.server.log.warning("Unknown target onion address: %s" % self.target_onion)
+        if self.handshake:
+            if self.handshake.get("target_ip", "").endswith(".onion") and self.server.tor_manager.start_onions:
+                self.target_onion = self.handshake.get("target_ip").replace(".onion", "")  # My onion address
+                if not self.server.tor_manager.site_onions.values():
+                    self.server.log.warning("Unknown target onion address: %s" % self.target_onion)
+            elif self.handshake.get("target_ip", "").endswith(".i2p") and self.server.i2p_manager.start_dests:
+                self.target_dest = self.handshake.get("target_ip").replace(".i2p", "")  # My I2P Destination
+                if not dest_sites.get(target_dest):
+                    self.server.log.error("Unknown target I2P Destination: %s" % target_dest)
 
         handshake = {
             "version": config.version,
@@ -378,6 +387,10 @@ def getHandshakeInfo(self):
             handshake["onion"] = self.target_onion
         elif self.ip_type == "onion":
             handshake["onion"] = self.server.tor_manager.getOnion("global")
+        elif self.target_dest:
+            handshake["i2p"] = self.target_dest
+        elif self.ip_type == "i2p":
+            handshake["i2p"] = self.server.i2p_manager.getDest("global").base64()
 
         if self.is_tracker_connection:
             handshake["tracker_connection"] = True
@@ -397,7 +410,7 @@ def setHandshake(self, handshake):
             return False
 
         self.handshake = handshake
-        if handshake.get("port_opened", None) is False and "onion" not in handshake and not self.is_private_ip:  # Not connectable
+        if handshake.get("port_opened", None) is False and "onion" not in handshake and "i2p" not in handshake and not self.is_private_ip:  # Not connectable
             self.port = 0
         else:
             self.port = int(handshake["fileserver_port"])  # Set peer fileserver port
@@ -416,7 +429,7 @@ def setHandshake(self, handshake):
             if type(handshake["crypt_supported"][0]) is bytes:
                 handshake["crypt_supported"] = [item.decode() for item in handshake["crypt_supported"]]  # Backward compatibility
 
-            if self.ip_type == "onion" or self.ip in config.ip_local:
+            if self.ip_type == "onion" or self.ip_type == "i2p" or self.ip in config.ip_local:
                 crypt = None
             elif handshake.get("crypt"):  # Recommended crypt by server
                 crypt = handshake["crypt"]
@@ -426,13 +439,21 @@ def setHandshake(self, handshake):
             if crypt:
                 self.crypt = crypt
 
-        if self.type == "in" and handshake.get("onion") and not self.ip_type == "onion":  # Set incoming connection's onion address
-            if self.server.ips.get(self.ip) == self:
-                del self.server.ips[self.ip]
-            self.setIp(handshake["onion"] + ".onion")
-            self.log("Changing ip to %s" % self.ip)
-            self.server.ips[self.ip] = self
-            self.updateName()
+        if self.type == "in":
+            if handshake.get("onion") and not self.ip_type == "onion":  # Set incoming connection's onion address
+                if self.server.ips.get(self.ip) == self:
+                    del self.server.ips[self.ip]
+                self.setIp(handshake["onion"] + ".onion")
+                self.log("Changing ip to %s" % self.ip)
+                self.server.ips[self.ip] = self
+                self.updateName()
+            if handshake.get("i2p") and not self.ip_type == "i2p":  # Set incoming connection's I2P Destination
+                if self.server.ips.get(self.ip) == self:
+                    del self.server.ips[self.ip]
+                self.setIp(handshake["i2p"] + ".i2p")
+                self.log("Changing ip to %s" % self.ip)
+                self.server.ips[self.ip] = self
+                self.updateName()
 
         self.event_connected.set(True)  # Mark handshake as done
         self.event_connected = None

src/Connection/ConnectionServer.py

@@ -17,6 +17,7 @@
 from Crypt import CryptConnection
 from Crypt import CryptHash
 from Tor import TorManager
+from I2P import I2PManager
 from Site import SiteManager
 
 
@@ -38,6 +39,10 @@ def __init__(self, ip=None, port=None, request_handler=None):
         self.peer_blacklist = SiteManager.peer_blacklist
 
         self.tor_manager = TorManager(self.ip, self.port)
+        if config.i2p != "disabled":
+            self.i2p_manager = I2PManager(self.handleIncomingConnection)
+        else:
+            self.i2p_manager = None
         self.connections = []  # Connections
         self.whitelist = config.ip_local  # No flood protection on this ips
         self.ip_incoming = {}  # Incoming connections from ip in the last minute to avoid connection flood
@@ -171,10 +176,13 @@ def handleMessage(self, *args, **kwargs):
 
     def getConnection(self, ip=None, port=None, peer_id=None, create=True, site=None, is_tracker_connection=False):
         ip_type = helper.getIpType(ip)
-        has_per_site_onion = (ip.endswith(".onion") or self.port_opened.get(ip_type, None) == False) and self.tor_manager.start_onions and site
-        if has_per_site_onion:  # Site-unique connection for Tor
+        has_per_site_onion = (((ip.endswith(".onion") or self.port_opened.get("onion", None) == False) and self.tor_manager.start_onions) or \
+                              ((ip.endswith(".i2p") or self.port_opened.get("i2p", None) == False) and self.i2p_manager.start_dests)) and site
+        if has_per_site_onion:  # Site-unique connection for Tor or I2P
             if ip.endswith(".onion"):
                 site_onion = self.tor_manager.getOnion(site.address)
+            elif ip.endswith(".i2p"):
+                site_onion = self.i2p_manager.getDest(site.address)
             else:
                 site_onion = self.tor_manager.getOnion("global")
             key = ip + site_onion
@@ -196,7 +204,8 @@ def getConnection(self, ip=None, port=None, peer_id=None, create=True, site=None
                 if connection.ip == ip:
                     if peer_id and connection.handshake.get("peer_id") != peer_id:  # Does not match
                         continue
-                    if ip.endswith(".onion") and self.tor_manager.start_onions and ip.replace(".onion", "") != connection.target_onion:
+                    if (ip.endswith(".onion") and self.tor_manager.start_onions and ip.replace(".onion", "") != connection.target_onion) or \
+                        (ip.endswith(".i2p") and self.i2p_manager.start_dests and ip.replace(".i2p", "") != connection.target_dest):
                         # For different site
                         continue
                     if not connection.connected and create:

src/File/FileRequest.py

@@ -321,6 +321,13 @@ def actionPex(self, params):
             if site.addPeer(*address, source="pex"):
                 added += 1
 
+        # Add sent i2p peers to site
+        for packed_address in params.get("peers_i2p", []):
+            address = helper.unpackI2PAddress(packed_address)
+            got_peer_keys.append("%s:%s" % address)
+            if site.addPeer(*address):
+                added += 1
+
         # Send back peers that is not in the sent list and connectable (not port 0)
         packed_peers = helper.packPeers(site.getConnectablePeers(params["need"], ignore=got_peer_keys, allow_private=False))
 
@@ -335,7 +342,8 @@ def actionPex(self, params):
         back = {
             "peers": packed_peers["ipv4"],
             "peers_ipv6": packed_peers["ipv6"],
-            "peers_onion": packed_peers["onion"]
+            "peers_onion": packed_peers["onion"],
+            "peers_i2p": packed_peers["i2p"]
         }
 
         self.response(back)
@@ -410,7 +418,7 @@ def actionFindHashIds(self, params):
                 "Found: %s for %s hashids in %.3fs" %
                 ({key: len(val) for key, val in back.items()}, len(params["hash_ids"]), time.time() - s)
             )
-        self.response({"peers": back["ipv4"], "peers_onion": back["onion"], "peers_ipv6": back["ipv6"], "my": my_hashes})
+        self.response({"peers": back["ipv4"], "peers_onion": back["onion"], "peers_i2p": back["i2p"], "peers_ipv6": back["ipv6"], "my": my_hashes})
 
     def actionSetHashfield(self, params):
         site = self.sites.get(params["site"])

src/File/FileServer.py

@@ -252,6 +252,7 @@ def checkSites(self, check_files=False, force_port_check=False):
 
             if not self.port_opened["ipv4"]:
                 self.tor_manager.startOnions()
+                self.i2p_manager.startDests()
 
         if not sites_checking:
             check_pool = gevent.pool.Pool(5)