Completes coding of the PWM module

git-svn-id: https://nuttx.svn.sourceforge.net/svnroot/nuttx/trunk@4200 7fd9a85b-ad96-42d3-883c-3090e2eb8679
2026-10-29 16:13:36 +08:00 · 2011-12-19 19:24:09 +00:00
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+/****************************************************************************
+ * apps/netutils/ftpc/ftpc_login.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 "ftpc_config.h"
+
+#include <string.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_login
+ *
+ * Description:
+ *   Log into the server
+ *
+ ****************************************************************************/
+
+int ftpc_login(SESSION handle, FAR struct ftpc_login_s *login)
+{
+  FAR struct ftpc_session_s *session = (FAR struct ftpc_session_s *)handle;
+  int err;
+  int ret;
+
+  /* Verify that we are connected to a server */
+
+  if (!ftpc_connected(session))
+    {
+      ndbg("Not connected\n");
+      err = ENOTCONN;
+      goto errout_with_err;
+    }
+
+  /* Verify that we are not already logged in to the server */
+
+  if (ftpc_loggedin(session))
+    {
+      ndbg("Already logged in\n");
+      err = EINVAL;
+      goto errout_with_err;
+    }
+
+  /* Save the login parameter */
+
+  session->uname    = ftpc_dequote(login->uname);
+  session->pwd      = ftpc_dequote(login->pwd);
+  session->initrdir = ftpc_dequote(login->rdir);
+
+  /* Is passive mode requested? */
+
+  FTPC_CLR_PASSIVE(session);
+  if (login->pasv)
+    {
+      nvdbg("Setting passive mode\n");
+      FTPC_SET_PASSIVE(session);
+    }
+
+  /* The (Re-)login to the server */
+
+  ret = ftpc_relogin(session);
+  if (ret != OK)
+    {
+      ndbg("login failed: %d\n", errno);
+      goto errout;
+    }
+
+  return OK;
+
+errout_with_err:
+  set_errno(err);
+errout:
+  return ERROR;
+}
+
+/****************************************************************************
+ * Name: ftpc_relogin
+ *
+ * Description:
+ *   Log in again after a loss of connection
+ *
+ ****************************************************************************/
+
+int ftpc_relogin(FAR struct ftpc_session_s *session)
+{
+  int err;
+  int ret;
+
+  /* Log into the server.  First send the USER command.  The server may accept
+   * USER with:
+   *
+   * - "230 User logged in, proceed" meaning that the client has permission to
+   *    access files under that username
+   * - "331 "User name okay, need password" or "332 Need account for login"
+   *    meaning that permission might be granted after a PASS request.
+   *
+   * Or the server may reject USER with:
+   *
+   * - "530 Not logged in" meaning that the username is unacceptable.
+   *
+   * In practice, the server does not check the username until after a PASS
+   * request
+   */
+
+  FTPC_CLR_LOGGEDIN(session);
+  ret = ftpc_cmd(session, "USER %s", session->uname);
+  if (ret != OK)
+    {
+      ndbg("USER %s cmd failed: %d\n", session->uname, errno);
+      return ERROR;
+    }
+
+  /* Send the PASS command with the passed. The server may accept PASS with:
+   *
+   * - "230 User logged in, proceed" meaning that the client has permission to
+   *    access files under that username
+   * - "202 Command not implemented, superfluous at this site" meaning that
+   *    permission was already granted in response to USER
+   * - "332 Need account for login" meaning that permission might be granted
+   *    after an ACCT request.
+   *
+   * The server may reject PASS with:
+   *
+   * - "503 Bad sequence of commands" if the previous request was not USER
+   * - "530 - Not logged in" if this username and password are unacceptable.
+   */
+
+  ret = ftpc_cmd(session, "PASS %s", session->pwd);
+  if (ret != OK)
+    {
+      ndbg("PASS %s cmd failed: %d\n", session->pwd, errno);
+      return ret;
+    }
+
+  /* We are logged in.. the current working directory on login is our "home"
+   * directory.
+   */
+
+  FTPC_SET_LOGGEDIN(session);
+  session->homerdir = ftpc_rpwd((SESSION)session);
+  session->currdir  = strdup(session->homerdir);
+
+  /* If the user has requested a special start up directory, then change to
+   * that directory now.
+   */
+
+  if (session->initrdir)
+    {
+      ftpc_chdir((SESSION)session, session->initrdir);
+    }
+
+  return OK;
+}