First cut at FTP client

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

1 files changed, 226 insertions, 0 deletions

diff --git a/apps/netutils/ftpc/ftpc_connect.c b/apps/netutils/ftpc/ftpc_connect.c
new file mode 100644
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+++ b/apps/netutils/ftpc/ftpc_connect.c
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+/****************************************************************************
+ * apps/netutils/ftpc/ftpc_connect.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 <errno.h>
+#include <debug.h>
+
+#include <apps/ftpc.h>
+
+#include "ftpc_internal.h"
+
+/****************************************************************************
+ * Pre-processor Definitions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Private Types
+ ****************************************************************************/
+
+/****************************************************************************
+ * Private Data
+ ****************************************************************************/
+
+/****************************************************************************
+ * Public Data
+ ****************************************************************************/
+
+/****************************************************************************
+ * Private Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: ftpc_connect
+ *
+ * Description:
+ *   Create a session handle and connect to the server.
+ *
+ ****************************************************************************/
+
+SESSION ftpc_connect(FAR struct ftpc_connect_s *server)
+{
+  FAR struct ftpc_session_s *session;
+  int ret;
+
+  /* Allocate a session structure */
+
+  session = (struct ftpc_session_s *)zalloc(sizeof(struct ftpc_session_s));
+  if (!session)
+    {
+      ndbg("Failed to allocate a session\n");
+      set_errno(ENOMEM);
+      goto errout;
+    }
+
+  /* Initialize the session structure */
+
+  session->addr.s_addr  = server->addr.s_addr;
+  session->port         = server->port;
+
+  /* Create up a timer to prevent hangs */
+
+  session->wdog = wd_create();
+
+  /* And (Re-)connect to the server */
+
+  ret = ftpc_reconnect(session);
+  if (ret != OK)
+    {
+      ndbg("ftpc_reconnect() failed: %d\n", errno);
+      goto errout_with_alloc;
+    }
+  return (SESSION)session;
+
+errout_with_alloc:
+  free(session);
+errout:
+  return NULL;
+}
+
+/****************************************************************************
+ * Name: ftpc_reconnect
+ *
+ * Description:
+ *   re-connect to the server either initially, or after loss of connection.
+ *
+ ****************************************************************************/
+
+int ftpc_reconnect(FAR struct ftpc_session_s *session)
+{
+  struct sockaddr_in addr;
+#ifdef CONFIG_DEBUG
+  char *tmp;
+#endif
+  int ret;
+
+  /* Re-initialize the session structure */
+
+  session->replytimeo = CONFIG_FTP_DEFTIMEO * CLOCKS_PER_SEC;
+  session->conntimeo  = CONFIG_FTP_DEFTIMEO * CLOCKS_PER_SEC;
+  session->xfrmode    = FTPC_XFRMODE_UNKNOWN;
+
+  /* Set up a timer to prevent hangs */
+
+  ret = wd_start(session->wdog, session->conntimeo, ftpc_conntimeo, 1, session);
+  if (ret != OK)
+    {
+      ndbg("wd_start() failed\n");
+      goto errout;
+    }
+
+  /* Initialize a socket */
+
+  ret = ftpc_sockinit(&session->cmd);
+  if (ret != OK)
+    {
+      ndbg("ftpc_sockinit() failed: %d\n", errno);
+      goto errout;
+    }
+
+  /* Connect the socket to the server */
+
+#ifdef CONFIG_DEBUG
+  tmp = inet_ntoa(session->addr);
+  ndbg("Connecting to server address %s:%d\n",
+       server->proxy ? "proxy" : "server", tmp, ntohl(session->port));
+  free(tmp);
+#endif
+
+  addr.sin_family      = AF_INET;
+  addr.sin_port        = session->port;
+  addr.sin_addr.s_addr = session->addr.s_addr;
+  ret = ftpc_sockconnect(&session->cmd, &addr);
+  if (ret != OK)
+    {
+      ndbg("ftpc_sockconnect() failed: %d\n", errno);
+      goto errout_with_socket;
+    }
+
+  /* Read startup message from server */
+
+  fptc_getreply(session);
+
+  /* Check for "120 Service ready in nnn minutes" */
+
+  if (session->code == 120)
+    {
+      fptc_getreply(session);
+    }
+  wd_cancel(session->wdog);
+
+  if (!ftpc_sockconnected(&session->cmd))
+    {
+      ftpc_reset(session);
+      goto errout;
+    }
+
+  /* Check for "220 Service ready for new user" */
+
+  if (session->code == 220)
+    {
+      FTPC_SET_CONNECTED(session);
+    }
+
+  if (!FTPC_IS_CONNECTED(session))
+    {
+      goto errout_with_socket;
+    }
+
+#ifdef CONFIG_DEBUG
+  ndbg("Connected\n");
+  tmp = inet_ntoa(session->cmd.raddr.sin_addr.s_addr);
+  ndbg("  Remote address: %s:%d\n", tmp, ntohl(session->cmd.raddr.sin_port));
+  free(tmp);
+  tmp = inet_ntoa(session->cmd.laddr.sin_addr.s_addr);
+  ndbg("  Local address: %s:d\n", tmp, ntohl(session->cmd.laddr.sin_port));
+  free(tmp);
+#endif
+  return OK;
+
+errout_with_socket:
+  ftpc_sockclose(&session->cmd);
+errout:
+  return ERROR;
+}