Add nuttx to the system framework, which is 10.1.0

Ubiquitous/Nuttx/apps/netutils/ftpc/ftpc_utils.c

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+/****************************************************************************
+ * apps/netutils/ftpc/ftpc_utils.c
+ *
+ *   Copyright (C) 2011 Gregory Nutt. All rights reserved.
+ *   Author: Gregory Nutt <gnutt@nuttx.org>
+ *
+ * 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 <stdlib.h>
+#include <string.h>
+
+#include "ftpc_internal.h"
+
+/****************************************************************************
+ * Private Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: ftpc_nibble
+ *
+ * Description:
+ *   Convert a ASCII hex 'digit' to binary
+ *
+ ****************************************************************************/
+
+int ftpc_nibble(char ch)
+{
+  if (ch >= '0' && ch <= '9')
+    {
+      return (unsigned int)ch - '0';
+    }
+  else if (ch >= 'A' && ch <= 'F')
+    {
+      return (unsigned int)ch - 'A' + 10;
+    }
+  else if (ch >= 'a' && ch <= 'f')
+    {
+      return (unsigned int)ch - 'a' + 10;
+    }
+
+  return ERROR;
+}
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: ftpc_reset
+ *
+ * Description:
+ *   Reset the FTP session.
+ *
+ ****************************************************************************/
+
+void ftpc_reset(struct ftpc_session_s *session)
+{
+  ftpc_sockclose(&session->data);
+  ftpc_sockclose(&session->cmd);
+  free(session->uname);
+  session->uname      = NULL;
+  free(session->pwd);
+  session->pwd        = NULL;
+  free(session->initrdir);
+  session->initrdir   = NULL;
+  session->flags     &= ~FTPC_FLAGS_CLEAR;
+  session->flags     |= FTPC_FLAGS_SET;
+  session->xfrmode    = FTPC_XFRMODE_UNKNOWN;
+  session->code       = 0;
+  session->replytimeo = CONFIG_FTP_DEFTIMEO * CLOCKS_PER_SEC;
+  session->conntimeo  = CONFIG_FTP_DEFTIMEO * CLOCKS_PER_SEC;
+}
+
+/****************************************************************************
+ * Name: ftpc_lpwd
+ *
+ * Description:
+ *   Return the local current working directory.  NOTE:  This is a peek at
+ *   a global copy.  The caller should call strdup if it wants to keep it.
+ *
+ ****************************************************************************/
+
+FAR const char *ftpc_lpwd(void)
+{
+#ifndef CONFIG_DISABLE_ENVIRON
+  FAR const char *val;
+
+  val = getenv("PWD");
+  if (!val)
+    {
+      val = CONFIG_FTP_TMPDIR;
+    }
+
+  return val;
+#else
+  return CONFIG_FTP_TMPDIR;
+#endif
+}
+
+/****************************************************************************
+ * Name: ftpc_stripcrlf
+ *
+ * Description:
+ *   Strip any trailing carriage returns or line feeds from a string (by
+ *   overwriting them with NUL characters).
+ *
+ ****************************************************************************/
+
+void ftpc_stripcrlf(FAR char *str)
+{
+  FAR char *ptr;
+  int len;
+
+  if (str)
+    {
+      len = strlen(str);
+      if (len > 0)
+        {
+          for (ptr = str + len - 1;
+               len > 0 && (*ptr == '\r' || *ptr == '\n');
+               ptr--, len--)
+            {
+              *ptr = '\0';
+            }
+        }
+    }
+}
+
+/****************************************************************************
+ * Name: ftpc_stripslash
+ *
+ * Description:
+ *   Strip single trailing slash from a string (by overwriting it with NUL
+ *   character).
+ *
+ ****************************************************************************/
+
+void ftpc_stripslash(FAR char *str)
+{
+  FAR char *ptr;
+  int len;
+
+  if (str)
+    {
+      len = strlen(str);
+      if (len > 1)
+        {
+          ptr = str + len - 1;
+          if (*ptr == '/')
+            {
+              *ptr = '\0';
+            }
+        }
+    }
+}
+
+/****************************************************************************
+ * Name: ftpc_dequote
+ *
+ * Description:
+ *   Convert quoted hexadecimal constants to binary values.
+ *
+ ****************************************************************************/
+
+FAR char *ftpc_dequote(FAR const char *str)
+{
+  FAR char *allocstr = NULL;
+  FAR char *ptr;
+  int ms;
+  int ls;
+  int len;
+
+  if (str)
+    {
+      /* Allocate space for a modifiable copy of the string */
+
+      len      = strlen(str);
+      allocstr = (FAR char *)malloc(len + 1);
+      if (allocstr)
+        {
+          /* Search the string */
+
+          ptr = allocstr;
+          while (*str != '\0')
+            {
+              /* Check for a quoted hex value (make sure that there are
+               * least 3 characters remaining in the string.
+               */
+
+              if (len > 2 && str[0] == '%')
+                {
+                  /* Extract the hex value */
+
+                  ms = ftpc_nibble(str[1]);
+                  if (ms >= 0)
+                    {
+                      ls = ftpc_nibble(str[2]);
+                      if (ls >= 0)
+                        {
+                          /* Save the binary value and skip ahead by 3 */
+
+                          *ptr++ = (char)(ms << 4 | ls);
+                          str += 3;
+                          len -= 3;
+                          continue;
+                        }
+                    }
+                }
+
+              /* Just transfer the character */
+
+              *ptr++ = *str++;
+              len--;
+            }
+
+          /* NUL terminate */
+
+          *ptr = '\0';
+        }
+    }
+
+  return allocstr;
+}