ClientIdentifierpublic class ClientIdentifier extends Object
| Methods Summary |
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| private static java.lang.String | asDiscrepancy(java.lang.String client_name, java.lang.String peer_id_name, java.lang.String handshake_name, java.lang.String discrepancy_type, java.lang.String protocol_type, byte[] peer_id)
if (client_name == null) {
BTPeerIDByteDecoder.logClientDiscrepancy(peer_id_name, handshake_name, discrepancy_type, protocol_type, peer_id);
}
return asDiscrepancy(client_name, peer_id_name + "\" / \"" + handshake_name, discrepancy_type);
| | private static java.lang.String | asDiscrepancy(java.lang.String real_client, java.lang.String dodgy_client, java.lang.String discrepancy_type)
if (real_client == null) {
real_client = MessageText.getString("PeerSocket.unknown");
}
return real_client + " [" +
MessageText.getString("PeerSocket." + discrepancy_type) + ": \"" + dodgy_client + "\"]";
| | public static java.lang.String | identifyAZMP(java.lang.String peer_id_client_name, java.lang.String az_msg_client_name, java.lang.String az_msg_client_version, byte[] peer_id)
/**
* Hack for BitTyrant - the handshake resembles this:
* Client: AzureusBitTyrant
* ClientVersion: 2.5.0.0BitTyrant
*
* Yuck - let's format it so it resembles something pleasant.
*/
if (az_msg_client_name.endsWith("BitTyrant")) {
return "BitTyrant " + az_msg_client_version.replaceAll("BitTyrant", "") + " (Azureus Mod)";
}
String msg_client_name = az_msg_client_name + " " + az_msg_client_version;
/**
* Do both names seem to match?
*/
if (msg_client_name.equals(peer_id_client_name)) {return msg_client_name;}
/**
* There may be some discrepancy - a different version number perhaps.
* If the main client name still seems to be the same, then return the one
* given to us in the AZ handshake.
*/
String peer_id_client = peer_id_client_name.split(" ", 2)[0];
String az_client_name = az_msg_client_name.split(" ", 2)[0];
if (peer_id_client.equals(az_client_name)) {
return msg_client_name;
}
// There is an inconsistency. Let's try figuring out what we can.
String client_displayed_name = null;
boolean is_peer_id_azureus = peer_id_client_name.startsWith("Azureus ");
boolean is_msg_client_azureus = az_msg_client_name.equals("Azureus");
boolean is_fake = false;
boolean is_mismatch = true;
boolean is_peer_id_unknown = peer_id_client_name.startsWith(MessageText.getString("PeerSocket.unknown"));
if (is_peer_id_azureus) {
// Shouldn't happen.
if (is_msg_client_azureus) {
throw new RuntimeException("logic error in getExtendedClientName - both clients are Azureus");
}
else {
// We've got a peer ID that says Azureus, but it doesn't say Azureus in the handshake.
// It's definitely fake.
is_fake = true;
// It might be XTorrent - it does use AZ2504 in the peer ID and "Transmission 0.7-svn"
// in the handshake.
if (msg_client_name.equals("Transmission 0.7-svn")) {client_displayed_name = "XTorrent";}
}
}
else {
if (is_msg_client_azureus) {is_fake = true;}
else if (is_peer_id_unknown) {
// Our peer ID decoding can't decode it, but the client identifies itself anyway.
// In that case, we won't say that it is a mismatch, and we'll just use the name
// provided to us.
client_displayed_name = msg_client_name;
is_mismatch = false;
// Log it though.
BTPeerIDByteDecoder.logClientDiscrepancy(peer_id_client_name, msg_client_name, "unknown_client", "AZMP", peer_id);
}
else {
// We've got a general mismatch, we don't know what client it is - in most cases.
// Ares Galaxy sometimes uses the same peer ID as Arctic Torrent, so allow it to be
// overridden.
if (msg_client_name.startsWith("Ares") && peer_id_client.equals("ArcticTorrent")) {
return msg_client_name;
}
}
}
String discrepancy_type;
if (is_fake) {discrepancy_type = "fake_client";}
else if (is_mismatch) {discrepancy_type = "mismatch_id";}
else {discrepancy_type = null;}
if (discrepancy_type != null) {
return asDiscrepancy(client_displayed_name, peer_id_client, msg_client_name, discrepancy_type, "AZMP", peer_id);
}
return client_displayed_name;
| | public static java.lang.String | identifyBTOnly(java.lang.String peer_id_client, byte[] handshake_bytes)
// BitThief check.
if (peer_id_client.equals("Mainline 4.4.0") && (handshake_bytes[7] & (byte)1) == 0) {
return asDiscrepancy("BitThief*", peer_id_client, "fake_client");
}
// We do care if something is claiming to be Azureus when it isn't. If
// it's a recent version of Azureus, but doesn't support advanced messaging, we
// know it's a fake.
if (!peer_id_client.startsWith("Azureus ")) {return peer_id_client;}
// Older versions of Azureus won't have support, so discount these first.
String version = peer_id_client.substring(8);
if (version.startsWith("1") || version.startsWith("2.0") ||
version.startsWith("2.1") || version.startsWith("2.2")) {
return peer_id_client;
}
// Must be a fake.
return asDiscrepancy(null, peer_id_client, "fake_client");
| | public static java.lang.String | identifyLTEP(java.lang.String peer_id_name, java.lang.String handshake_name, byte[] peer_id)
if (handshake_name == null) {return peer_id_name;}
/**
* Official BitTorrent clients should still be shown as Mainline.
* This is to be consistent with previous Azureus behaviour.
*/
String handshake_name_to_process = handshake_name;
if (handshake_name.startsWith("BitTorrent ")) {
handshake_name_to_process = handshake_name.replaceFirst("BitTorrent", "Mainline");
}
if (peer_id_name.startsWith("\u00B5Torrent")) {
// 1.6.0 misidentifies itself as 1.5 in the handshake.
if (peer_id_name.equals("\u00B5Torrent 1.6.0")) {
return peer_id_name;
}
// Older µTorrent versions will not always use the appropriate character for the
// first letter, so compensate here.
if (!handshake_name.startsWith("\u00B5Torrent") && handshake_name.startsWith("Torrent", 1)) {
handshake_name_to_process = "\u00B5" + handshake_name.substring(1);
}
// Some versions indicate they are the beta version in the peer ID, but not in the
// handshake - we prefer to keep the beta identifier.
if (peer_id_name.endsWith("Beta") && peer_id_name.startsWith(handshake_name_to_process)) {
return peer_id_name;
}
}
// Some Mainline 4.x versions identify themselves as µTorrent - according to alus,
// this was a bug, so just identify as Mainline.
if (peer_id_name.startsWith("Mainline 4.") && handshake_name.startsWith("Torrent", 1)) {
return peer_id_name;
}
// We allow a client to have a different version number than the one decoded from
// the peer ID. Some clients separate version and client name using a forward slash,
// so we split on that as well.
String client_type_peer = peer_id_name.split(" ", 2)[0];
String client_type_handshake = handshake_name_to_process.split(" ", 2)[0].split("/", 2)[0];
if (client_type_peer.toLowerCase().equals(client_type_handshake.toLowerCase())) {return handshake_name_to_process;}
// Bloody XTorrent.
if (handshake_name_to_process.equals("Transmission 0.7-svn") && client_type_peer.equals("Azureus")) {
return asDiscrepancy("XTorrent", peer_id_name, handshake_name, "fake_client", "LTEP", peer_id);
}
// Bloody Xtorrent.
if (handshake_name_to_process.startsWith("Transmission") && client_type_peer.startsWith("XTorrent")) {
return asDiscrepancy(client_type_peer, handshake_name_to_process, "fake_client");
}
// Like we do with AZMP peers, allow the handshake to define the client even if we can't extract the
// name from the peer ID, but log it so we can possibly identify it in future.
if (peer_id_name.startsWith(MessageText.getString("PeerSocket.unknown"))) {
BTPeerIDByteDecoder.logClientDiscrepancy(peer_id_name, handshake_name, "unknown_client", "LTEP", peer_id);
return handshake_name_to_process;
}
/**
* libtorrent is... unsurprisingly... a torrent library. Many clients use it, so cope with clients
* which don't identify themselves through the peer ID, but *do* identify themselves through the
* handshake.
*/
if (peer_id_name.startsWith("libtorrent (Rasterbar)")) {
if (handshake_name_to_process.toLowerCase().indexOf("libtorrent") == -1) {
handshake_name_to_process += " (" + peer_id_name + ")";
}
return handshake_name_to_process;
}
// Can't determine what the client is.
return asDiscrepancy(null, peer_id_name, handshake_name, "mismatch_id", "LTEP", peer_id);
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