DConnect Daemon is a Direct Connect (from NeoModus Software) Hub clone for Linux. We created him, because we wanted to have stable program for stable system. It runs as a system deamon. You can find newest version of DConnect Deamon on website

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END OF TERMS AND CONDITIONS Installation. Requirements.

To compile DConnect Daemon, you need: libwrap libpthread automake autoconf libtool gettext (not used now...)

We know that there are a lot of them...(this file is too short :). The most important are: some local buffer overflows user can not set names with national letters rehashing with -HUP doesn't work somehow hub name sent on publicmsg is hardcoded with NeoModus Direct Connect 1.0 preview Build 8 user list while logging is missing sometimes. Build 9 works fine. If you find any - tell us about it:

Cracked by Albert Based on analysis source code of: DCJavaClient 0.20 (J) - 2001 - Stefan Görling - stefan@gorling.se (Java) Opendcd 0.2 (O)- 2001 - suxxx@users.sourceforge.net (Kylix) DCHub 0.0.3 (H) - Eric Prevoteau - www@ac2i.tzo.com (Linux C) NR SRC NAME AND STRUCTURE DESCRIPTION 1 H $BadPass Authorization failed (password sended $MyPass instruction is bad). Direction: hub → client Parameters: ¦ 1 J,O,H $ConnectToMe Not recognized yet Direction: Parameters: 2 J $Direction Not recognized yet Direction: Parameters: 3 J $FileLength Information about size of file, which was asked $Get command (during direct connection between clients). Thanks this clients which downloading data, know size of this data. Direction: client → client Parameters: fileSize ¦ 4 J,H $ForceMove Demand of redirecting to other hub. It it was been possible to make balancing of load. (2 hubs and redirecting in dependence from size of shared data, hour of day or subnet from which client conecting) Direction: hub → client Parameters: hubName ¦ 5 J $Get Request about download, or resume of file (during direct connection between clients). Second client should answer command $FileLength. After that we send command $Send, starting transfer of data. Direction: client → client Parameters: fileName$startByte ¦ 6 J,O $GetINFO Demand of client information. Hub analyses nick field, and sending command to destination client. Adressee should answer $MyINFO command. Direction: client → hub → client Parameters: nick senderNick ¦ 7 J,O $GetNickList Demand of nicks list of clients of hub. Hub answers command $NickList and $OpList. Direction: client → hub Parameters: ¦ 1 O,H $GetPass Demand of authorization (check nick permissions). Client answers command $MyPass with password. Direction: hub → client Parameters: ¦ 8 J,O $Hello Information to everybody, that new client connected. Clients should answers command $MyINFO sending informations about itself to him(J). Direction: hub → all Parameters: nick ¦ 21 H $HubIsFull Sending to client when hub is full and redirect is impossible. Direction: hub → client Parameters: ¦ 9 J,H $HubName Sending to just connected client of hub. Direction: hub → klient Parameters: hubName ¦ 10 J,O,H $Key Answer of client on $Lock command (demand of authorization). Key key is enumerated basis of client alghoritm and field salt. Field salt is sending on command $Lock. Direction: client → hub; client <→ client Parameters: key ¦ 1 O,H $Kick Kick from hub. Only admin can do that. Direction: client → hub Parameters: nick ¦ 11 J,O,H $Lock Demand of authorization. This is protection from unauthorized connection to hub. Algorithm of enumerating of key is fortunately already broken :)) In answer client sent to hub command $Key with key, enumerated basis of field salt. Authorization is realized also during direct connection between clients (session download) into both side. Length of salt field is changing (less than 3 bytes - in (H) length is drawing from range 50-100, and chars from range '%' - 'z'), however privateKey is not used in any analysed sources. Direction: hub → client; client <→ client Parameters: salt Pk=privateKey ¦ 1 O,H $LoggedIn Authorization succcess. Password sending after command $MyPass is correct. User is logged on hub. Direction: hub → client Parameters: ¦ 12 J $MaxedOut Not recognized yet. Direction: Parameters: 1 O $MultiSearch Not recognized yet. Direction: Parameters: 13 J,O $MyINFO Information about itself. Hub records all parameters and sends this command to rest of clients. (added $ALL before - this means that exist version of $MyINFO for one client only. Direction: client → hub; hub → all Parameters: nick description$ connectionTypeF$email$$sharedBytes$ ¦ (klient → hub) $ALL nick description$ connectionTypeF$email$sharedBytes$ ¦ (hub → all) - description - any desription - connectionType - 56Kbps/33.6Kbps/28.8Kbps/Satellite/ISDN/DSL/Cable/LAN(T1)/LAN(T3) - F - one-byte flag (default \x01) - when bit 1 is 0 - client is behind firewall (\x00). - email - address (usual empty) - sharedBytes - size of share 14 J $MyNick Information about nick. This is first command, sended during direct connection between clients (download session). Direction: client → client Parameters: nick ¦ 13 O,H $MyPass Answer on $GetPass command. That is nicks rights confirmation. If password is correct, hub sending command $Hello to all, with information about new user. If this user is OP, hub sending commands $LoggedIn and $Hello to all. If password is incorrect, client is disconnecting (O) or command $BadPass (H) is sending. Direction: client → hub Parameters: password ¦ 15 J,O $NickList List all of nicks logged on hub (admin and user are not distinguished). This is answer of server onto command $GetNickList. Turned list is separated '$$'. User with admin rights, sees additionally user HubSecurity (first on turned list). Direction: hub → client Parameters: nick1$$nick2$$nick3 ¦ 4 O $OpForceMove Demand of redirecting user with admin's rights to other hub. Direction: hub → client Parameters: hubName ¦ 16 J,O $OpList List of admins logged on hub. This is hub's answer on command$GetNickList. Turned nicks list is separated '$$'. User with admin rights, sees additionally user HubSecurity (first on turned list). Direction: hub → client Parameters: nick1$$nick2$$nick3 ¦ 17 J $Quit Correct end of connection. Hub removes sender from nicks list, then sends command $Quit to remaining users. (They can remove sender from own nicks list). Direction: client → hub → all Parameters: nick ¦ 18 J,O,H $RevConnectToMe Not recognized yet Direction: Parameters: 19 J,O,H $Search File searching. Hub may pass this command between itself. Direction: client &rarr hub &rarr &lsqb hub &rsqb &rarr all Parameters: Hub:senderNick ifSize?ifLess?size?dataType?pattern ¦ - ifSize - F when file size is unimportant, in opposite time T - ifLess - F when we looking for files with size grather than size, T - when less - size - size in bytes - dataType - 1=any, 2=audio, 3=compressed, 4=document, 5=exe, 6=picture, 7=videos, 8=folder 20 J $Send Starting stream of data during download session (between clients). Sent previously command $Get and $FileLength define which file is sent, from which of byte and what portion of data is transmited. Direction: client → client Parameters: ¦ 21 J,O,H $SR Not recognized yet. Direction: Parameters: 22 J,H $To Sending private message (on DC chat). Direction: client → hub → client Parameters: nick To: senderNick$<senderNick>message ¦ 23 J,H $ValidateNick Validation of nick. This command is sent to hub soon after $Key command (on start of connection). Hub checks whether nick is not already used or banned. Chars ' ' and '&dollar' are incorrect in nick. If nick is password protected, hub sends command $GetPass to confirm rights to using nick. Hub sends $Hello information to everybody, that new client connected. (O). Direction: client → hub Parameters: nick ¦ 24 J,H $Version Information about client version. Currently is not used. Direction: client → hub Parameters: clientVersion ¦

And here We in alphabetical order: Michal "Fela" Felski web site design Pawel "blues" Golaszewski ac/am support cvs support packaging Sebastian "rawsock" Rosenkiewicz network programming protocol implementation Artur P. "ventox" Wojcik framework configuration Robert "Albert" Zoralski protocol cracking