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authorKenny Root <kenny@the-b.org>2015-07-24 16:13:51 -0700
committerKenny Root <kenny@the-b.org>2015-07-24 16:13:51 -0700
commitd3c4f49d68ba97f43aacbe86d4ece7546eee4f15 (patch)
tree6cfe6093f69737af10bc5437acc10942795f2b57 /app/src/main/java/net/sourceforge/jsocks/server
parent739337624a5e69221a998cf10b1fd34fcc5ecd2d (diff)
parent571d61b6b55bc3eb9540e17973d93cc15b22da23 (diff)
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Merge pull request #105 from kruton/master
Update to library-based build
Diffstat (limited to 'app/src/main/java/net/sourceforge/jsocks/server')
-rw-r--r--app/src/main/java/net/sourceforge/jsocks/server/ServerAuthenticator.java120
-rw-r--r--app/src/main/java/net/sourceforge/jsocks/server/ServerAuthenticatorNone.java169
2 files changed, 0 insertions, 289 deletions
diff --git a/app/src/main/java/net/sourceforge/jsocks/server/ServerAuthenticator.java b/app/src/main/java/net/sourceforge/jsocks/server/ServerAuthenticator.java
deleted file mode 100644
index cb7f0af..0000000
--- a/app/src/main/java/net/sourceforge/jsocks/server/ServerAuthenticator.java
+++ /dev/null
@@ -1,120 +0,0 @@
-package net.sourceforge.jsocks.server;
-
-import java.io.IOException;
-import java.io.InputStream;
-import java.io.OutputStream;
-import java.net.DatagramPacket;
-import java.net.Socket;
-
-import net.sourceforge.jsocks.ProxyMessage;
-import net.sourceforge.jsocks.UDPEncapsulation;
-
-/**
- Classes implementing this interface should provide socks server with
- authentication and authorization of users.
-**/
-public interface ServerAuthenticator{
-
- /**
- This method is called when a new connection accepted by the server.
- <p>
- At this point no data have been extracted from the connection. It is
- responsibility of this method to ensure that the next byte in the
- stream after this method have been called is the first byte of the
- socks request message. For SOCKSv4 there is no authentication data and
- the first byte in the stream is part of the request. With SOCKSv5 however
- there is an authentication data first. It is expected that implementaions
- will process this authentication data.
- <p>
- If authentication was successful an instance of ServerAuthentication
- should be returned, it later will be used by the server to perform
- authorization and some other things. If authentication fails null should
- be returned, or an exception may be thrown.
-
- @param s Accepted Socket.
- @return An instance of ServerAuthenticator to be used for this connection
- or null
- */
- ServerAuthenticator startSession(Socket s) throws IOException;
-
- /**
- This method should return input stream which should be used on the
- accepted socket.
- <p>
- SOCKSv5 allows to have multiple authentication methods, and these methods
- might require some kind of transformations being made on the data.
- <p>
- This method is called on the object returned from the startSession
- function.
- */
- InputStream getInputStream();
- /**
- This method should return output stream to use to write to the accepted
- socket.
- <p>
- SOCKSv5 allows to have multiple authentication methods, and these methods
- might require some kind of transformations being made on the data.
- <p>
- This method is called on the object returned from the startSession
- function.
- */
- OutputStream getOutputStream();
-
- /**
- This method should return UDPEncapsulation, which should be used
- on the datagrams being send in/out.
- <p>
- If no transformation should be done on the datagrams, this method
- should return null.
- <p>
- This method is called on the object returned from the startSession
- function.
- */
-
- UDPEncapsulation getUdpEncapsulation();
-
- /**
- This method is called when a request have been read.
- <p>
- Implementation should decide wether to grant request or not. Returning
- true implies granting the request, false means request should be rejected.
- <p>
- This method is called on the object returned from the startSession
- function.
- @param msg Request message.
- @return true to grant request, false to reject it.
- */
- boolean checkRequest(ProxyMessage msg);
-
- /**
- This method is called when datagram is received by the server.
- <p>
- Implementaions should decide wether it should be forwarded or dropped.
- It is expecteed that implementation will use datagram address and port
- information to make a decision, as well as anything else. Address and
- port of the datagram are always correspond to remote machine. It is
- either destination or source address. If out is true address is destination
- address, else it is a source address, address of the machine from which
- datagram have been received for the client.
- <p>
- Implementaions should return true if the datagram is to be forwarded, and
- false if the datagram should be dropped.
- <p>
- This method is called on the object returned from the startSession
- function.
-
- @param out If true the datagram is being send out(from the client),
- otherwise it is an incoming datagram.
- @return True to forward datagram false drop it silently.
- */
- boolean checkRequest(DatagramPacket dp, boolean out);
-
- /**
- This method is called when session is completed. Either due to normal
- termination or due to any error condition.
- <p>
- This method is called on the object returned from the startSession
- function.
- */
- void endSession();
-}
diff --git a/app/src/main/java/net/sourceforge/jsocks/server/ServerAuthenticatorNone.java b/app/src/main/java/net/sourceforge/jsocks/server/ServerAuthenticatorNone.java
deleted file mode 100644
index e4edbe7..0000000
--- a/app/src/main/java/net/sourceforge/jsocks/server/ServerAuthenticatorNone.java
+++ /dev/null
@@ -1,169 +0,0 @@
-package net.sourceforge.jsocks.server;
-import java.io.IOException;
-import java.io.InputStream;
-import java.io.OutputStream;
-import java.io.PushbackInputStream;
-import java.net.Socket;
-
-import net.sourceforge.jsocks.ProxyMessage;
-import net.sourceforge.jsocks.UDPEncapsulation;
-
-/**
- An implementation of ServerAuthenticator, which does <b>not</b> do
- any authentication.
-<P>
-<FONT size="+3" color ="FF0000"> Warning!!</font><br> Should not be
-used on machines which are not behind the firewall.
-<p>
-It is only provided to make implementing other authentication schemes
-easier.<br>
-For Example: <tt><pre>
- class MyAuth extends socks.server.ServerAuthenticator{
- ...
- public ServerAuthenticator startSession(java.net.Socket s){
- if(!checkHost(s.getInetAddress()) return null;
- return super.startSession(s);
- }
-
- boolean checkHost(java.net.Inetaddress addr){
- boolean allow;
- //Do it somehow
- return allow;
- }
- }
-</pre></tt>
-*/
-public class ServerAuthenticatorNone implements ServerAuthenticator{
-
- static final byte[] socks5response = {5,0};
-
- InputStream in;
- OutputStream out;
-
- /**
- Creates new instance of the ServerAuthenticatorNone.
- */
- public ServerAuthenticatorNone(){
- this.in = null;
- this.out = null;
- }
- /**
- Constructs new ServerAuthenticatorNone object suitable for returning
- from the startSession function.
- @param in Input stream to return from getInputStream method.
- @param out Output stream to return from getOutputStream method.
- */
- public ServerAuthenticatorNone(InputStream in, OutputStream out){
- this.in = in;
- this.out = out;
- }
- /**
- Grants access to everyone.Removes authentication related bytes from
- the stream, when a SOCKS5 connection is being made, selects an
- authentication NONE.
- */
- public ServerAuthenticator startSession(Socket s)
- throws IOException{
-
- PushbackInputStream in = new PushbackInputStream(s.getInputStream());
- OutputStream out = s.getOutputStream();
-
- int version = in.read();
- if(version == 5){
- if(!selectSocks5Authentication(in,out,0))
- return null;
- }else if(version == 4){
- //Else it is the request message allready, version 4
- in.unread(version);
- }else
- return null;
-
-
- return new ServerAuthenticatorNone(in,out);
- }
-
- /**
- Get input stream.
- @return Input stream speciefied in the constructor.
- */
- public InputStream getInputStream(){
- return in;
- }
- /**
- Get output stream.
- @return Output stream speciefied in the constructor.
- */
- public OutputStream getOutputStream(){
- return out;
- }
- /**
- Allways returns null.
- @return null
- */
- public UDPEncapsulation getUdpEncapsulation(){
- return null;
- }
-
- /**
- Allways returns true.
- */
- public boolean checkRequest(ProxyMessage msg){
- return true;
- }
-
- /**
- Allways returns true.
- */
- public boolean checkRequest(java.net.DatagramPacket dp, boolean out){
- return true;
- }
-
- /**
- Does nothing.
- */
- public void endSession(){
- }
-
- /**
- Convinience routine for selecting SOCKSv5 authentication.
- <p>
- This method reads in authentication methods that client supports,
- checks wether it supports given method. If it does, the notification
- method is written back to client, that this method have been chosen
- for authentication. If given method was not found, authentication
- failure message is send to client ([5,FF]).
- @param in Input stream, version byte should be removed from the stream
- before calling this method.
- @param out Output stream.
- @param methodId Method which should be selected.
- @return true if methodId was found, false otherwise.
- */
- static public boolean selectSocks5Authentication(InputStream in,
- OutputStream out,
- int methodId)
- throws IOException{
-
- int num_methods = in.read();
- if (num_methods <= 0) return false;
- byte method_ids[] = new byte[num_methods];
- byte response[] = new byte[2];
- boolean found = false;
-
- response[0] = (byte) 5; //SOCKS version
- response[1] = (byte) 0xFF; //Not found, we are pessimistic
-
- int bread = 0; //bytes read so far
- while(bread < num_methods)
- bread += in.read(method_ids,bread,num_methods-bread);
-
- for(int i=0;i<num_methods;++i)
- if(method_ids[i] == methodId){
- found = true;
- response[1] = (byte) methodId;
- break;
- }
-
- out.write(response);
- return found;
- }
-}