--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/app/src/main/java/ch/ethz/ssh2/SFTPv6Client.java	Thu Dec 03 11:23:55 2015 -0800
@@ -0,0 +1,300 @@
+package ch.ethz.ssh2;
+
+import java.io.IOException;
+import java.util.ArrayList;
+import java.util.List;
+
+import ch.ethz.ssh2.log.Logger;
+import ch.ethz.ssh2.packets.TypesReader;
+import ch.ethz.ssh2.packets.TypesWriter;
+import ch.ethz.ssh2.sftp.AceMask;
+import ch.ethz.ssh2.sftp.ErrorCodes;
+import ch.ethz.ssh2.sftp.OpenFlags;
+import ch.ethz.ssh2.sftp.Packet;
+
+/**
+ * @version $Id: SFTPv6Client.java 151 2014-04-28 10:03:39Z dkocher@sudo.ch $
+ */
+public class SFTPv6Client extends AbstractSFTPClient {
+    private static final Logger log = Logger.getLogger(SFTPv6Client.class);
+
+    private PacketListener listener;
+
+    public SFTPv6Client(Connection conn) throws IOException {
+        this(conn, new PacketListener() {
+            public void read(String packet) {
+                log.debug("Read packet " + packet);
+            }
+            public void write(String packet) {
+                log.debug("Write packet " + packet);
+            }
+        });
+    }
+
+    public SFTPv6Client(Connection conn, PacketListener listener) throws IOException {
+        super(conn, 6, listener);
+        this.listener = listener;
+    }
+
+    public SFTPv6FileAttributes fstat(SFTPFileHandle handle) throws IOException {
+        int req_id = generateNextRequestID();
+        TypesWriter tw = new TypesWriter();
+        tw.writeString(handle.getHandle(), 0, handle.getHandle().length);
+        sendMessage(Packet.SSH_FXP_FSTAT, req_id, tw.getBytes());
+        byte[] resp = receiveMessage(34000);
+        TypesReader tr = new TypesReader(resp);
+        int t = tr.readByte();
+        listener.read(Packet.forName(t));
+        int rep_id = tr.readUINT32();
+
+        if (rep_id != req_id) {
+            throw new RequestMismatchException();
+        }
+
+        if (t == Packet.SSH_FXP_ATTRS) {
+            return new SFTPv6FileAttributes(tr);
+        }
+
+        if (t != Packet.SSH_FXP_STATUS) {
+            throw new PacketTypeException(t);
+        }
+
+        int errorCode = tr.readUINT32();
+        String errorMessage = tr.readString();
+        listener.read(errorMessage);
+        throw new SFTPException(errorMessage, errorCode);
+    }
+
+    private SFTPv6FileAttributes statBoth(String path, int statMethod) throws IOException {
+        int req_id = generateNextRequestID();
+        TypesWriter tw = new TypesWriter();
+        tw.writeString(path, this.getCharset());
+        sendMessage(statMethod, req_id, tw.getBytes());
+        byte[] resp = receiveMessage(34000);
+        TypesReader tr = new TypesReader(resp);
+        int t = tr.readByte();
+        listener.read(Packet.forName(t));
+        int rep_id = tr.readUINT32();
+
+        if (rep_id != req_id) {
+            throw new RequestMismatchException();
+        }
+
+        if (t == Packet.SSH_FXP_ATTRS) {
+            return new SFTPv6FileAttributes(tr);
+        }
+
+        if (t != Packet.SSH_FXP_STATUS) {
+            throw new PacketTypeException(t);
+        }
+
+        int errorCode = tr.readUINT32();
+        String errorMessage = tr.readString();
+        listener.read(errorMessage);
+        throw new SFTPException(errorMessage, errorCode);
+    }
+
+    public SFTPv6FileAttributes stat(String path) throws IOException {
+        return statBoth(path, Packet.SSH_FXP_STAT);
+    }
+
+    public SFTPv6FileAttributes lstat(String path) throws IOException {
+        return statBoth(path, Packet.SSH_FXP_LSTAT);
+    }
+
+
+    private List<SFTPv6DirectoryEntry> scanDirectory(byte[] handle) throws IOException {
+        List<SFTPv6DirectoryEntry> files = new ArrayList<SFTPv6DirectoryEntry>();
+
+        while (true) {
+            int req_id = generateNextRequestID();
+            TypesWriter tw = new TypesWriter();
+            tw.writeString(handle, 0, handle.length);
+            sendMessage(Packet.SSH_FXP_READDIR, req_id, tw.getBytes());
+            byte[] resp = receiveMessage(34000);
+            TypesReader tr = new TypesReader(resp);
+            int t = tr.readByte();
+            listener.read(Packet.forName(t));
+            int rep_id = tr.readUINT32();
+
+            if (rep_id != req_id) {
+                throw new RequestMismatchException();
+            }
+
+            if (t == Packet.SSH_FXP_NAME) {
+                int count = tr.readUINT32();
+
+                if (log.isDebugEnabled()) {
+                    log.debug(String.format("Parsing %d name entries", count));
+                }
+
+                while (count > 0) {
+                    SFTPv6DirectoryEntry file = new SFTPv6DirectoryEntry();
+                    file.filename = tr.readString(this.getCharset());
+                    listener.read(file.filename);
+                    file.attributes = new SFTPv6FileAttributes(tr);
+
+                    if (log.isDebugEnabled()) {
+                        log.debug(String.format("Adding file %s", file));
+                    }
+
+                    files.add(file);
+                    count--;
+                }
+
+                continue;
+            }
+
+            if (t != Packet.SSH_FXP_STATUS) {
+                throw new PacketTypeException(t);
+            }
+
+            int errorCode = tr.readUINT32();
+
+            if (errorCode == ErrorCodes.SSH_FX_EOF) {
+                return files;
+            }
+
+            String errorMessage = tr.readString();
+            listener.read(errorMessage);
+            throw new SFTPException(errorMessage, errorCode);
+        }
+    }
+
+    public final SFTPFileHandle openDirectory(String path) throws IOException {
+        int req_id = generateNextRequestID();
+        TypesWriter tw = new TypesWriter();
+        tw.writeString(path, this.getCharset());
+        sendMessage(Packet.SSH_FXP_OPENDIR, req_id, tw.getBytes());
+        byte[] resp = receiveMessage(34000);
+        TypesReader tr = new TypesReader(resp);
+        int t = tr.readByte();
+        listener.read(Packet.forName(t));
+        int rep_id = tr.readUINT32();
+
+        if (rep_id != req_id) {
+            throw new RequestMismatchException();
+        }
+
+        if (t == Packet.SSH_FXP_HANDLE) {
+            return new SFTPFileHandle(this, tr.readByteString());
+        }
+
+        if (t != Packet.SSH_FXP_STATUS) {
+            throw new PacketTypeException(t);
+        }
+
+        int errorCode = tr.readUINT32();
+        String errorMessage = tr.readString();
+        listener.read(errorMessage);
+        throw new SFTPException(errorMessage, errorCode);
+    }
+
+    /**
+     * List the contents of a directory.
+     *
+     * @param dirName See the {@link SFTPv6Client comment} for the class for more details.
+     * @return A Vector containing {@link SFTPv6DirectoryEntry} objects.
+     * @throws IOException
+     */
+    public List<SFTPv6DirectoryEntry> ls(String dirName) throws IOException {
+        SFTPFileHandle handle = openDirectory(dirName);
+        List<SFTPv6DirectoryEntry> result = scanDirectory(handle.getHandle());
+        closeFile(handle);
+        return result;
+    }
+
+    /**
+     * Create a file and open it for reading and writing.
+     * Same as {@link #createFile(String, SFTPFileAttributes) createFile(fileName, null)}.
+     *
+     * @param filename See the {@link SFTPv6Client comment} for the class for more details.
+     * @return a SFTPFileHandle handle
+     * @throws IOException
+     */
+    public SFTPFileHandle createFile(String filename) throws IOException {
+        return createFile(filename, new SFTPv6FileAttributes());
+    }
+
+    /**
+     * Create a file and open it for reading and writing.
+     * You can specify the default attributes of the file (the server may or may
+     * not respect your wishes).
+     *
+     * @param filename See the {@link SFTPv6Client comment} for the class for more details.
+     * @param attr     may be <code>null</code> to use server defaults. Probably only
+     *                 the <code>uid</code>, <code>gid</code> and <code>permissions</code>
+     *                 (remember the server may apply a umask) entries of the {@link SFTPFileHandle}
+     *                 structure make sense. You need only to set those fields where you want
+     *                 to override the server's defaults.
+     * @return a SFTPFileHandle handle
+     * @throws IOException
+     */
+    public SFTPFileHandle createFile(String filename, SFTPFileAttributes attr) throws IOException {
+        return openFile(filename, OpenFlags.SSH_FXF_CREATE_NEW, attr);
+    }
+
+    public SFTPFileHandle openFile(String filename, int flags) throws IOException {
+        return this.openFile(filename, flags, new SFTPv6FileAttributes());
+    }
+
+    @Override
+    public SFTPFileHandle openFile(String filename, int flags, SFTPFileAttributes attr) throws IOException {
+        int req_id = generateNextRequestID();
+        TypesWriter tw = new TypesWriter();
+        tw.writeString(filename, this.getCharset());
+        tw.writeUINT32(AceMask.ACE4_READ_DATA | AceMask.ACE4_READ_ATTRIBUTES | AceMask.ACE4_READ_ACL | AceMask.ACE4_READ_NAMED_ATTRS
+                       | AceMask.ACE4_WRITE_DATA | AceMask.ACE4_APPEND_DATA | AceMask.ACE4_WRITE_ATTRIBUTES | AceMask.ACE4_WRITE_ACL | AceMask.ACE4_WRITE_NAMED_ATTRS);
+        tw.writeUINT32(flags);
+        tw.writeBytes(attr.toBytes());
+        sendMessage(Packet.SSH_FXP_OPEN, req_id, tw.getBytes());
+        byte[] resp = receiveMessage(34000);
+        TypesReader tr = new TypesReader(resp);
+        int t = tr.readByte();
+        listener.read(Packet.forName(t));
+        int rep_id = tr.readUINT32();
+
+        if (rep_id != req_id) {
+            throw new RequestMismatchException();
+        }
+
+        if (t == Packet.SSH_FXP_HANDLE) {
+            return new SFTPFileHandle(this, tr.readByteString());
+        }
+
+        if (t != Packet.SSH_FXP_STATUS) {
+            throw new PacketTypeException(t);
+        }
+
+        int errorCode = tr.readUINT32();
+        String errorMessage = tr.readString();
+        listener.read(errorMessage);
+        throw new SFTPException(errorMessage, errorCode);
+    }
+
+    @Override
+    public void createSymlink(String src, String target) throws IOException {
+        int req_id = generateNextRequestID();
+        TypesWriter tw = new TypesWriter();
+        // new-link-path
+        tw.writeString(src, this.getCharset());
+        // existing-path
+        tw.writeString(target, this.getCharset());
+        tw.writeBoolean(true);
+        sendMessage(Packet.SSH_FXP_LINK, req_id, tw.getBytes());
+        expectStatusOKMessage(req_id);
+    }
+
+    @Override
+    public void createHardlink(String src, String target) throws IOException {
+        int req_id = generateNextRequestID();
+        TypesWriter tw = new TypesWriter();
+        // new-link-path
+        tw.writeString(src, this.getCharset());
+        // existing-path
+        tw.writeString(target, this.getCharset());
+        tw.writeBoolean(false);
+        sendMessage(Packet.SSH_FXP_LINK, req_id, tw.getBytes());
+        expectStatusOKMessage(req_id);
+    }
+}