First cut at FTP client

git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@3654 42af7a65-404d-4744-a932-0658087f49c3

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diff --git a/apps/netutils/ftpc/ftpc_disconnect.c b/apps/netutils/ftpc/ftpc_disconnect.c
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+++ b/apps/netutils/ftpc/ftpc_disconnect.c
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+/****************************************************************************
+ * apps/netutils/ftpc/ftpc_disconnect.c
+ *
+ *   Copyright (C) 2011 Gregory Nutt. All rights reserved.
+ *   Author: Gregory Nutt <spudmonkey@racsa.co.cr>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ * 3. Neither the name NuttX nor the names of its contributors may be
+ *    used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ****************************************************************************/
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+
+#include <stdlib.h>
+
+#include <apps/ftpc.h>
+
+#include "ftpc_internal.h"
+
+/****************************************************************************
+ * Pre-processor Definitions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Private Types
+ ****************************************************************************/
+
+/****************************************************************************
+ * Private Data
+ ****************************************************************************/
+
+/****************************************************************************
+ * Public Data
+ ****************************************************************************/
+
+/****************************************************************************
+ * Private Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: ftpc_disconnect
+ *
+ * Description:
+ *   Disconnect from the server and destroy the session handle..
+ *
+ ****************************************************************************/
+
+void ftpc_disconnect(SESSION handle)
+{
+  FAR struct ftpc_session_s *session = (FAR struct ftpc_session_s *)handle;
+  if (session)
+    {
+      /* Release sockets */
+
+      ftpc_sockclose(&session->data);
+      ftpc_sockclose(&session->cmd);
+
+      /* Free strings */
+
+      free(session->uname);
+      free(session->pwd);
+      free(session->initdir);
+      free(session->homedir);
+      free(session->curdir);
+      free(session->prevdir);
+      free(session->rname);
+      free(session->lname);
+
+      /* Then destroy the session */
+
+      free(session);
+    }
+}