Examples of ch.ethz.ssh2.crypto.digest.MD5

ch.ethz.ssh2.packets.TypesReader
MD5. Based on the example code in RFC 1321. Optimized (...a little). @author Christian Plattner, plattner@inf.ethz.ch @version $Id: MD5.java,v 1.2 2006/02/02 09:11:03 cplattne Exp $

    {
      debug.println("Got REPLY.");
      debug.flush();
    }


    TypesReader tr = new TypesReader(resp);


    int t = tr.readByte();


    int rep_id = tr.readUINT32();
    if (rep_id != req_id)
      throw new IOException("The server sent an invalid id field.");


    if (t == Packet.SSH_FXP_ATTRS)
    {
      return readAttrs(tr);
    }


    if (t != Packet.SSH_FXP_STATUS)
      throw new IOException("The SFTP server sent an unexpected packet type (" + t + ")");


    int errorCode = tr.readUINT32();


    throw new SFTPException(tr.readString(), errorCode);
  }

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    {
      debug.println("Got REPLY.");
      debug.flush();
    }


    TypesReader tr = new TypesReader(resp);


    int t = tr.readByte();


    int rep_id = tr.readUINT32();
    if (rep_id != req_id)
      throw new IOException("The server sent an invalid id field.");


    if (t == Packet.SSH_FXP_NAME)
    {
      int count = tr.readUINT32();


      if (count != 1)
        throw new IOException("The server sent an invalid SSH_FXP_NAME packet.");


      return tr.readString(charsetName);
    }


    if (t != Packet.SSH_FXP_STATUS)
      throw new IOException("The SFTP server sent an unexpected packet type (" + t + ")");


    int errorCode = tr.readUINT32();


    throw new SFTPException(tr.readString(), errorCode);
  }

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    {
      debug.println("Got REPLY.");
      debug.flush();
    }


    TypesReader tr = new TypesReader(resp);


    int t = tr.readByte();


    int rep_id = tr.readUINT32();
    if (rep_id != id)
      throw new IOException("The server sent an invalid id field.");


    if (t != Packet.SSH_FXP_STATUS)
      throw new IOException("The SFTP server sent an unexpected packet type (" + t + ")");


    int errorCode = tr.readUINT32();


    if (errorCode == ErrorCodes.SSH_FX_OK)
      return;


    throw new SFTPException(tr.readString(), errorCode);
  }

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    {
      debug.println("Got REPLY.");
      debug.flush();
    }


    TypesReader tr = new TypesReader(resp);


    int t = tr.readByte();


    int rep_id = tr.readUINT32();
    if (rep_id != req_id)
      throw new IOException("The server sent an invalid id field.");


    if (t == Packet.SSH_FXP_NAME)
    {
      int count = tr.readUINT32();


      if (count != 1)
        throw new IOException("The server sent an invalid SSH_FXP_NAME packet.");


      return tr.readString(charsetName);
    }


    if (t != Packet.SSH_FXP_STATUS)
      throw new IOException("The SFTP server sent an unexpected packet type (" + t + ")");


    int errorCode = tr.readUINT32();


    throw new SFTPException(tr.readString(), errorCode);
  }

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      {
        debug.println("Got REPLY.");
        debug.flush();
      }


      TypesReader tr = new TypesReader(resp);


      int t = tr.readByte();


      int rep_id = tr.readUINT32();
      if (rep_id != req_id)
        throw new IOException("The server sent an invalid id field.");


      if (t == Packet.SSH_FXP_NAME)
      {
        int count = tr.readUINT32();


        if (debug != null)
          debug.println("Parsing " + count + " name entries...");


        while (count > 0)
        {
          SFTPv3DirectoryEntry dirEnt = new SFTPv3DirectoryEntry();


          dirEnt.filename = tr.readString(charsetName);
          dirEnt.longEntry = tr.readString(charsetName);


          dirEnt.attributes = readAttrs(tr);
          files.addElement(dirEnt);


          if (debug != null)
            debug.println("File: '" + dirEnt.filename + "'");
          count--;
        }
        continue;
      }


      if (t != Packet.SSH_FXP_STATUS)
        throw new IOException("The SFTP server sent an unexpected packet type (" + t + ")");


      int errorCode = tr.readUINT32();


      if (errorCode == ErrorCodes.SSH_FX_EOF)
        return files;


      throw new SFTPException(tr.readString(), errorCode);
    }
  }

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    sendMessage(Packet.SSH_FXP_OPENDIR, req_id, tw.getBytes());


    byte[] resp = receiveMessage(34000);


    TypesReader tr = new TypesReader(resp);


    int t = tr.readByte();


    int rep_id = tr.readUINT32();
    if (rep_id != req_id)
      throw new IOException("The server sent an invalid id field.");


    if (t == Packet.SSH_FXP_HANDLE)
    {
      if (debug != null)
      {
        debug.println("Got SSH_FXP_HANDLE.");
        debug.flush();
      }


      byte[] handle = tr.readByteString();
      return handle;
    }


    if (t != Packet.SSH_FXP_STATUS)
      throw new IOException("The SFTP server sent an unexpected packet type (" + t + ")");


    int errorCode = tr.readUINT32();
    String errorMessage = tr.readString();


    throw new SFTPException(errorMessage, errorCode);
  }

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    /* Receive SSH_FXP_VERSION */


    if (debug != null)
      debug.println("Waiting for SSH_FXP_VERSION...");


    TypesReader tr = new TypesReader(receiveMessage(34000)); /* Should be enough for any reasonable server */


    int type = tr.readByte();


    if (type != Packet.SSH_FXP_VERSION)
    {
      throw new IOException("The server did not send a SSH_FXP_VERSION packet (got " + type + ")");
    }


    protocol_version = tr.readUINT32();


    if (debug != null)
      debug.println("SSH_FXP_VERSION: protocol_version = " + protocol_version);


    if (protocol_version != 3)
      throw new IOException("Server version " + protocol_version + " is currently not supported");


    /* Read and save extensions (if any) for later use */


    while (tr.remain() != 0)
    {
      String name = tr.readString();
      byte[] value = tr.readByteString();
      server_extensions.put(name, value);


      if (debug != null)
        debug.println("SSH_FXP_VERSION: extension: " + name + " = '" + expandString(value, 0, value.length)
            + "'");

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    sendMessage(Packet.SSH_FXP_OPEN, req_id, tw.getBytes());


    byte[] resp = receiveMessage(34000);


    TypesReader tr = new TypesReader(resp);


    int t = tr.readByte();


    int rep_id = tr.readUINT32();
    if (rep_id != req_id)
      throw new IOException("The server sent an invalid id field.");


    if (t == Packet.SSH_FXP_HANDLE)
    {
      if (debug != null)
      {
        debug.println("Got SSH_FXP_HANDLE.");
        debug.flush();
      }


      return new SFTPv3FileHandle(this, tr.readByteString());
    }


    if (t != Packet.SSH_FXP_STATUS)
      throw new IOException("The SFTP server sent an unexpected packet type (" + t + ")");


    int errorCode = tr.readUINT32();
    String errorMessage = tr.readString();


    throw new SFTPException(errorMessage, errorCode);
  }

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    sendMessage(Packet.SSH_FXP_READ, req_id, tw.getBytes());


    byte[] resp = receiveMessage(34000);


    TypesReader tr = new TypesReader(resp);


    int t = tr.readByte();


    int rep_id = tr.readUINT32();
    if (rep_id != req_id)
      throw new IOException("The server sent an invalid id field.");


    if (t == Packet.SSH_FXP_DATA)
    {
      if (debug != null)
      {
        debug.println("Got SSH_FXP_DATA...");
        debug.flush();
      }


      int readLen = tr.readUINT32();


      if ((readLen < 0) || (readLen > len))
        throw new IOException("The server sent an invalid length field.");


      tr.readBytes(dst, dstoff, readLen);


      return readLen;
    }


    if (t != Packet.SSH_FXP_STATUS)
      throw new IOException("The SFTP server sent an unexpected packet type (" + t + ")");


    int errorCode = tr.readUINT32();


    if (errorCode == ErrorCodes.SSH_FX_EOF)
    {
      if (debug != null)
      {
        debug.println("Got SSH_FX_EOF.");
        debug.flush();
      }


      return -1;
    }


    String errorMessage = tr.readString();


    throw new SFTPException(errorMessage, errorCode);
  }

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        srcoff += writeRequestLen;
        len -= writeRequestLen;


        byte[] resp = receiveMessage(34000);


        TypesReader tr = new TypesReader(resp);


        int t = tr.readByte();


        int rep_id = tr.readUINT32();
        if (rep_id != req_id)
          throw new IOException("The server sent an invalid id field.");


        if (t != Packet.SSH_FXP_STATUS)
          throw new IOException("The SFTP server sent an unexpected packet type (" + t + ")");


        int errorCode = tr.readUINT32();


        if (errorCode == ErrorCodes.SSH_FX_OK)
          continue;


        String errorMessage = tr.readString();


        throw new SFTPException(errorMessage, errorCode);
      }
  }

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