Program: 23789
Project: 23789
Buggy source:
/** 
 * Handles a connect request from a client. This method will read the rest of the request from the client. Assuming the request is valid, it will create a <code>HeaderSet</code> object to pass to the <code>ServerRequestHandler</code> object. After the handler processes the request, this method will create a reply message to send to the server with the response code provided.
 * @throws IOException if an error occurred at the transport layer
 */
private void handleConnectRequest() throws IOException {
  int packetLength;
  @SuppressWarnings("String_Node_Str") int version;
  @SuppressWarnings("String_Node_Str") int flags;
  int totalLength=7;
  byte[] head=null;
  int code=-1;
  HeaderSet request=new HeaderSet();
  HeaderSet reply=new HeaderSet();
  int bytesReceived;
  packetLength=mInput.read();
  packetLength=(packetLength << 8) + mInput.read();
  version=mInput.read();
  flags=mInput.read();
  mMaxPacketLength=mInput.read();
  mMaxPacketLength=(mMaxPacketLength << 8) + mInput.read();
  if (mMaxPacketLength > ObexHelper.MAX_PACKET_SIZE_INT) {
    mMaxPacketLength=ObexHelper.MAX_PACKET_SIZE_INT;
  }
  if (packetLength > ObexHelper.MAX_PACKET_SIZE_INT) {
    code=ResponseCodes.OBEX_HTTP_REQ_TOO_LARGE;
    totalLength=7;
  }
 else {
    if (packetLength > 7) {
      byte[] headers=new byte[packetLength - 7];
      bytesReceived=mInput.read(headers);
      while (bytesReceived != headers.length) {
        bytesReceived+=mInput.read(headers,bytesReceived,headers.length - bytesReceived);
      }
      ObexHelper.updateHeaderSet(request,headers);
    }
    if (request.mConnectionID != null) {
      mListener.setConnectionId(ObexHelper.convertToLong(request.mConnectionID));
    }
 else {
      mListener.setConnectionId(1);
    }
    if (request.mAuthResp != null) {
      if (!handleAuthResp(request.mAuthResp)) {
        code=ResponseCodes.OBEX_HTTP_UNAUTHORIZED;
        mListener.onAuthenticationFailure(ObexHelper.getTagValue((byte)0x01,request.mAuthResp));
      }
      request.mAuthResp=null;
    }
    if (code != ResponseCodes.OBEX_HTTP_UNAUTHORIZED) {
      if (request.mAuthChall != null) {
        handleAuthChall(request);
        reply.mAuthResp=new byte[request.mAuthResp.length];
        System.arraycopy(request.mAuthResp,0,reply.mAuthResp,0,reply.mAuthResp.length);
        request.mAuthChall=null;
        request.mAuthResp=null;
      }
      try {
        code=mListener.onConnect(request,reply);
        code=validateResponseCode(code);
        if (reply.nonce != null) {
          mChallengeDigest=new byte[16];
          System.arraycopy(reply.nonce,0,mChallengeDigest,0,16);
        }
 else {
          mChallengeDigest=null;
        }
        long id=mListener.getConnectionId();
        if (id == -1) {
          reply.mConnectionID=null;
        }
 else {
          reply.mConnectionID=ObexHelper.convertToByteArray(id);
        }
        head=ObexHelper.createHeader(reply,false);
        totalLength+=head.length;
        if (totalLength > mMaxPacketLength) {
          totalLength=7;
          head=null;
          code=ResponseCodes.OBEX_HTTP_INTERNAL_ERROR;
        }
      }
 catch (      Exception e) {
        e.printStackTrace();
        totalLength=7;
        head=null;
        code=ResponseCodes.OBEX_HTTP_INTERNAL_ERROR;
      }
    }
  }
  byte[] length=ObexHelper.convertToByteArray(totalLength);
  byte[] sendData=new byte[totalLength];
  sendData[0]=(byte)code;
  sendData[1]=length[2];
  sendData[2]=length[3];
  sendData[3]=(byte)0x10;
  sendData[4]=(byte)0x00;
  sendData[5]=(byte)(ObexHelper.MAX_PACKET_SIZE_INT >> 8);
  sendData[6]=(byte)(ObexHelper.MAX_PACKET_SIZE_INT & 0xFF);
  if (head != null) {
    System.arraycopy(head,0,sendData,7,head.length);
  }
  mOutput.write(sendData);
  mOutput.flush();
}

Fixed version (ground truth):
/** 
 * Handles a connect request from a client. This method will read the rest of the request from the client. Assuming the request is valid, it will create a <code>HeaderSet</code> object to pass to the <code>ServerRequestHandler</code> object. After the handler processes the request, this method will create a reply message to send to the server with the response code provided.
 * @throws IOException if an error occurred at the transport layer
 */
private void handleConnectRequest() throws IOException {
  int packetLength;
  @SuppressWarnings("String_Node_Str") int version;
  @SuppressWarnings("String_Node_Str") int flags;
  int totalLength=7;
  byte[] head=null;
  int code=-1;
  HeaderSet request=new HeaderSet();
  HeaderSet reply=new HeaderSet();
  int bytesReceived;
  packetLength=mInput.read();
  packetLength=(packetLength << 8) + mInput.read();
  version=mInput.read();
  flags=mInput.read();
  mMaxPacketLength=mInput.read();
  mMaxPacketLength=(mMaxPacketLength << 8) + mInput.read();
  if (mMaxPacketLength > ObexHelper.MAX_PACKET_SIZE_INT) {
    mMaxPacketLength=ObexHelper.MAX_PACKET_SIZE_INT;
  }
  if (packetLength > ObexHelper.MAX_PACKET_SIZE_INT) {
    code=ResponseCodes.OBEX_HTTP_REQ_TOO_LARGE;
    totalLength=7;
  }
 else {
    if (packetLength > 7) {
      byte[] headers=new byte[packetLength - 7];
      bytesReceived=mInput.read(headers);
      while (bytesReceived != headers.length) {
        bytesReceived+=mInput.read(headers,bytesReceived,headers.length - bytesReceived);
      }
      ObexHelper.updateHeaderSet(request,headers);
    }
    if (mListener.getConnectionId() != -1 && request.mConnectionID != null) {
      mListener.setConnectionId(ObexHelper.convertToLong(request.mConnectionID));
    }
 else {
      mListener.setConnectionId(1);
    }
    if (request.mAuthResp != null) {
      if (!handleAuthResp(request.mAuthResp)) {
        code=ResponseCodes.OBEX_HTTP_UNAUTHORIZED;
        mListener.onAuthenticationFailure(ObexHelper.getTagValue((byte)0x01,request.mAuthResp));
      }
      request.mAuthResp=null;
    }
    if (code != ResponseCodes.OBEX_HTTP_UNAUTHORIZED) {
      if (request.mAuthChall != null) {
        handleAuthChall(request);
        reply.mAuthResp=new byte[request.mAuthResp.length];
        System.arraycopy(request.mAuthResp,0,reply.mAuthResp,0,reply.mAuthResp.length);
        request.mAuthChall=null;
        request.mAuthResp=null;
      }
      try {
        code=mListener.onConnect(request,reply);
        code=validateResponseCode(code);
        if (reply.nonce != null) {
          mChallengeDigest=new byte[16];
          System.arraycopy(reply.nonce,0,mChallengeDigest,0,16);
        }
 else {
          mChallengeDigest=null;
        }
        long id=mListener.getConnectionId();
        if (id == -1) {
          reply.mConnectionID=null;
        }
 else {
          reply.mConnectionID=ObexHelper.convertToByteArray(id);
        }
        head=ObexHelper.createHeader(reply,false);
        totalLength+=head.length;
        if (totalLength > mMaxPacketLength) {
          totalLength=7;
          head=null;
          code=ResponseCodes.OBEX_HTTP_INTERNAL_ERROR;
        }
      }
 catch (      Exception e) {
        e.printStackTrace();
        totalLength=7;
        head=null;
        code=ResponseCodes.OBEX_HTTP_INTERNAL_ERROR;
      }
    }
  }
  byte[] length=ObexHelper.convertToByteArray(totalLength);
  byte[] sendData=new byte[totalLength];
  sendData[0]=(byte)code;
  sendData[1]=length[2];
  sendData[2]=length[3];
  sendData[3]=(byte)0x10;
  sendData[4]=(byte)0x00;
  sendData[5]=(byte)(ObexHelper.MAX_PACKET_SIZE_INT >> 8);
  sendData[6]=(byte)(ObexHelper.MAX_PACKET_SIZE_INT & 0xFF);
  if (head != null) {
    System.arraycopy(head,0,sendData,7,head.length);
  }
  mOutput.write(sendData);
  mOutput.flush();
}