Resync new repository with old repo r5166

git-svn-id: http://svn.code.sf.net/p/nuttx/code/trunk@5153 42af7a65-404d-4744-a932-0658087f49c3

nuttx/lib/net/Make.defs

@@ -0,0 +1,44 @@
+############################################################################
+# lib/net/Make.defs
+#
+#   Copyright (C) 2011-2012 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.
+#
+############################################################################
+
+# Add the networking C files to the build
+
+CSRCS += lib_etherntoa.c lib_htons.c lib_htonl.c lib_inetaddr.c
+CSRCS += lib_inetntoa.c lib_inetntop.c lib_inetpton.c
+
+# Add the net directory to the build
+
+DEPPATH += --dep-path net
+VPATH += :net

nuttx/lib/net/lib_etherntoa.c

@@ -0,0 +1,69 @@
+/****************************************************************************
+ * lib/net/lib_etherntoa.c
+ *
+ *   Copyright (C) 2007, 2008, 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 <nuttx/config.h>
+#include <stdio.h>
+
+#include <net/ethernet.h>
+#include <netinet/ether.h>
+
+/****************************************************************************
+ * Global Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: ether_ntoa
+ *
+ * Description:
+ *   The ether_ntoa() function converts the Ethernet host address addr given
+ *   in network byte order to a string in standard hex-digits-and-colons
+ *   notation. The string is returned in a statically allocated buffer, which
+ *   subsequent calls will overwrite.
+ *
+ ****************************************************************************/
+
+FAR char *ether_ntoa(FAR const struct ether_addr *addr)
+{
+  static char buffer[20];
+  sprintf(buffer, "%02x:%02x:%02x:%02x:%02x:%02x",
+          addr->ether_addr_octet[0], addr->ether_addr_octet[1],
+          addr->ether_addr_octet[2], addr->ether_addr_octet[3],
+          addr->ether_addr_octet[4], addr->ether_addr_octet[5]);
+  return buffer;
+}

nuttx/lib/net/lib_htonl.c

@@ -0,0 +1,68 @@
+/************************************************************
+ * lib/net/lib_ntohl.c
+ *
+ *   Copyright (C) 2007, 2009, 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 <nuttx/config.h>
+
+#include <stdint.h>
+#include <arpa/inet.h>
+
+/************************************************************
+ * Global Functions
+ ************************************************************/
+
+uint32_t htonl(uint32_t hl)
+{
+#ifdef CONFIG_ENDIAN_BIG
+  return hl;
+#else
+  return (( (hl) >> 24) |
+          (((hl) >>  8) & 0x0000ff00) |
+          (((hl) <<  8) & 0x00ff0000) |
+	  ( (hl) << 24));
+#endif
+}
+
+uint32_t ntohl(uint32_t nl)
+{
+#ifdef CONFIG_ENDIAN_BIG
+  return nl;
+#else
+  return htonl(nl);
+#endif
+}

nuttx/lib/net/lib_htons.c

@@ -0,0 +1,65 @@
+/***************************************************************************
+ * lib/net/lib_htons.c
+ *
+ *   Copyright (C) 2007-2009, 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.
+ *
+ ***************************************************************************/
+
+/***************************************************************************
+ * Compilation Switches
+ ***************************************************************************/
+
+/***************************************************************************
+ * Included Files
+ ***************************************************************************/
+
+#include <nuttx/config.h>
+
+#include <stdint.h>
+#include <arpa/inet.h>
+
+/***************************************************************************
+ * Global Functions
+ ***************************************************************************/
+
+uint16_t htons(uint16_t hs)
+{
+  return HTONS(hs);
+}
+
+uint16_t ntohs(uint16_t ns)
+{
+#ifdef CONFIG_ENDIAN_BIG
+  return ns;
+#else
+  return htons(ns);
+#endif
+}

nuttx/lib/net/lib_inetaddr.c

@@ -0,0 +1,74 @@
+/****************************************************************************
+ * lib/net/lib_inetaddr.c
+ *
+ *   Copyright (C) 2011 Yu Qiang. All rights reserved.
+ *   Author: Yu Qiang <yuq825@gmail.com>
+ *
+ * This file is a part of NuttX:
+ *
+ *   Copyright (C) 2011 Gregory Nutt. All rights reserved.
+ *
+ * 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 <stdio.h>
+#include <arpa/inet.h>
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * name inet_addr
+ *
+ * Description:
+ *   The inet_addr() function converts the string pointed to by cp, in the
+ *   standard IPv4 dotted decimal notation, to an integer value suitable for
+ *   use as an Internet address.
+ 
+ ****************************************************************************/
+
+in_addr_t inet_addr(FAR const char *cp)
+{
+  unsigned int a, b, c, d;
+  uint32_t result;
+
+  sscanf(cp, "%u.%u.%u.%u", &a, &b, &c, &d);
+  result   = a << 8;
+  result  |= b;
+  result <<= 8;
+  result  |= c;
+  result <<= 8;
+  result  |= d;
+  return HTONL(result);
+}

nuttx/lib/net/lib_inetntoa.c

@@ -0,0 +1,79 @@
+/****************************************************************************
+ * lib/net/lib_inetntoa.c
+ *
+ *   Copyright (C) 2007-2008, 2011-2012 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 <nuttx/config.h>
+#include <stdio.h>
+#include <arpa/inet.h>
+
+#ifndef CONFIG_NET_IPv6
+
+/****************************************************************************
+ * Global Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: inet_ntoa
+ *
+ * Description:
+ *   The inet_ntoa() function converts the Internet host address in given in
+ *   network byte order to a string in standard numbers-and-dots notation.
+ *   The string is returned in a statically allocated buffer, which subsequent
+ *   calls will overwrite.
+ *
+ ****************************************************************************/
+
+#ifdef CONFIG_CAN_PASS_STRUCTS
+FAR char *inet_ntoa(struct in_addr in)
+{
+  static char buffer[INET_ADDRSTRLEN+2];
+  FAR char *ptr = (FAR char*)&in.s_addr;
+  sprintf(buffer, "%d.%d.%d.%d", ptr[0], ptr[1], ptr[2], ptr[3]);
+  return buffer;
+}
+#else
+FAR char *_inet_ntoa(in_addr_t in)
+{
+  static char buffer[INET_ADDRSTRLEN+2];
+  FAR char *ptr = (FAR char*)&in;
+  sprintf(buffer, "%d.%d.%d.%d", ptr[0], ptr[1], ptr[2], ptr[3]);
+  return buffer;
+}
+#endif
+#endif /* !CONFIG_NET_IPv6 */
+

nuttx/lib/net/lib_inetntop.c

@@ -0,0 +1,202 @@
+/****************************************************************************
+ * lib/net/lib_inetntop.c
+ *
+ *   Copyright (C) 2012 Gregory Nutt. All rights reserved.
+ *   Author: Gregory Nutt <gnutt@nuttx.org>
+ *
+ * Includes some logic extracted from hwport_ftpd, written by Jaehyuk Cho
+ * <minzkn@minzkn.com> which was released under the BSD license.
+ *
+ *   Copyright (C) HWPORT.COM. All rights reserved.
+ *   Author: JAEHYUK CHO <mailto:minzkn@minzkn.com>
+ *
+ * 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 <sys/socket.h>
+
+#include <stdio.h>
+#include <string.h>
+#include <errno.h>
+
+#include <arpa/inet.h>
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: inet_ntop
+ *
+ * Description:
+ *  The inet_ntop() function converts a numeric address into a text string
+ *  suitable for presentation.
+ *
+ * Input Parameters:
+ *   af   - The af argument specifies the family of the address. This can be
+ *          AF_INET or AF_INET6.
+ *   src  - The src argument points to a buffer holding an address of the
+ *          specified type.  The address must be in network byte order.
+ *   dst  - The dst argument points to a buffer where the function stores
+ *          the resulting text string; it shall not be NULL.
+ *   size - The size argument specifies the size of this buffer, which must
+ *          be large enough to hold the text string (INET_ADDRSTRLEN
+ *          characters for IPv4, INET6_ADDRSTRLEN characters for IPv6).
+ *
+ * Returned Value:
+ *   inet_ntop() returns a pointer to the buffer containing the text string
+ *   if the conversion succeeds.  Otherwise, NULL is returned and the errno
+ *   is set to indicate the error.  There follow errno values may be set:
+ *
+ *   EAFNOSUPPORT - The af argument is invalid.
+ *   ENOSPC - The size of the inet_ntop() result buffer is inadequate
+ *
+ ****************************************************************************/
+
+FAR const char *inet_ntop(int af, FAR const void *src, FAR char *dst, socklen_t size)
+{
+  int errval;
+#ifndef CONFIG_NET_IPv6
+  FAR char *ptr;
+
+  DEBUGASSERT(src && dst);
+
+  if (af != AF_INET)
+    {
+      errval = EAFNOSUPPORT;
+      goto errout;
+    }
+
+  if (size < INET_ADDRSTRLEN)
+    {
+      errval = ENOSPC;
+      goto errout;
+    }
+
+  ptr = (FAR char*)src;
+  sprintf(dst, "%d.%d.%d.%d", ptr[0], ptr[1], ptr[2], ptr[3]);
+  return dst;
+#else
+  FAR const struct in6_addr *in6_addr;
+  uint16_t warray[8];
+  int offset;
+  int entry;
+  int count;
+  int maxentry;
+  int maxcount;
+ 
+  DEBUGASSERT(src && dst);
+
+  if (af != AF_INET6)
+    {
+      errval = EAFNOSUPPORT;
+      goto errout;
+    }
+
+  if (size < INET6_ADDRSTRLEN)
+    {
+      errval = ENOSPC;
+      goto errout;
+    }
+
+  in6_addr = (FAR const struct in6_addr *)src;
+  entry    = -1;
+  maxentry = -1;
+  maxcount = 0;
+  offset   = 0;
+
+  while (offset < 8)
+    {
+      warray[offset] = ntohs(in6_addr->s6_addr16[offset]);
+      if (warray[offset] == 0)
+        {
+          entry = offset;
+          count = 1;
+          offset++;
+
+          while (offset < 8)
+            {
+              warray[offset] = ntohs(in6_addr->s6_addr16[offset]);
+              if (warray[offset] != 0)
+                {
+                  break;
+                }
+              offset++;
+              count++;
+            }
+
+          if (count > maxcount)
+            {
+              maxentry = entry;
+              maxcount = count;
+            }
+        }
+      offset++;
+    }
+
+  offset = 0;
+  dst[0] = '\0';
+
+  while (offset < 8)
+    {
+      if (offset == maxentry)
+        {
+          size   -= snprintf(&dst[strlen(dst)], size, ":");
+          offset += maxcount;
+          if (offset >= 8)
+            {
+              size -= snprintf(&dst[strlen(dst)], size, ":");
+            }
+        }
+      else
+        {
+          if (offset > 0)
+            {
+              size -= snprintf(&dst[strlen(dst)], size, ":");
+            }
+
+          size -= snprintf(&dst[strlen(dst)], size, "%x", warray[offset]);
+          offset++;
+        }
+    }
+
+    return dst;
+#endif
+
+errout:
+    set_errno(errval);
+    memset(dst, 0, size);
+    return NULL;
+}

nuttx/lib/net/lib_inetpton.c

@@ -0,0 +1,338 @@
+/****************************************************************************
+ * lib/net/lib_inetpton.c
+ *
+ *   Copyright (C) 2012 Gregory Nutt. All rights reserved.
+ *   Author: Gregory Nutt <gnutt@nuttx.org>
+ *
+ * Includes some logic extracted from hwport_ftpd, written by Jaehyuk Cho
+ * <minzkn@minzkn.com> which was released under the BSD license.
+ *
+ *   Copyright (C) HWPORT.COM. All rights reserved.
+ *   Author: JAEHYUK CHO <mailto:minzkn@minzkn.com>
+ *
+ * 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 <sys/socket.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <errno.h>
+
+#include <arpa/inet.h>
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: inet_pton
+ *
+ * Description:
+ *  The inet_pton() function converts an address in its standard text
+ *  presentation form into its numeric binary form.
+ *
+ *  If the af argument of inet_pton() is AF_INET, the src string will be
+ *  in the standard IPv4 dotted-decimal form:
+ *
+ *    ddd.ddd.ddd.ddd
+ *
+ *  where "ddd" is a one to three digit decimal number between 0 and 255.
+ *
+ *  If the af argument of inet_pton() is AF_INET6, the src string will be in
+ *  one of the following standard IPv6 text forms:
+ *
+ *  1. The preferred form is "x:x:x:x:x:x:x:x", where the 'x' s are the
+ *     hexadecimal values of the eight 16-bit pieces of the address. Leading
+ *     zeros in individual fields can be omitted, but there must be at least
+ *     one numeral in every field.
+ *
+ *  2. A string of contiguous zero fields in the preferred form can be shown
+ *     as "::". The "::" can only appear once in an address. Unspecified
+ *     addresses ( "0:0:0:0:0:0:0:0" ) may be represented simply as "::".
+ *
+ *  3. A third form that is sometimes more convenient when dealing with a
+ *     mixed environment of IPv4 and IPv6 nodes is "x:x:x:x:x:x:d.d.d.d",
+ *     where the 'x' s are the hexadecimal values of the six high-order
+ *     16-bit pieces of the address, and the 'd' s are the decimal values
+ *     of the four low-order 8-bit pieces of the address (standard IPv4
+ *     representation).
+ *
+ * Input Parameters:
+ *   af   - The af argument specifies the family of the address. This can be
+ *          AF_INET or AF_INET6.
+ *   src  - The src argument points to the string being passed in.
+ *   dst  - The dst argument points to a numstr into which the function stores
+ *          the numeric address; this must be large enough to hold the numeric
+ *          address (32 bits for AF_INET, 128 bits for AF_INET6).
+ *
+ * Returned Value:
+ *   The inet_pton() function returns 1 if the conversion succeeds, with the
+ *   address pointed to by dst in network byte order. It will return 0 if the
+ *   input is not a valid IPv4 dotted-decimal string or a valid IPv6 address
+ *   string, or -1 with errno set to EAFNOSUPPOR] if the af argument is unknown.
+ *
+ ****************************************************************************/
+
+int inet_pton(int af, FAR const char *src, FAR void *dst)
+{
+#ifndef CONFIG_NET_IPv6
+  size_t srcoffset;
+  size_t numoffset;
+  int value;
+  int ndots;
+  uint8_t ch;
+  char numstr[4];
+  uint8_t *ip;
+
+  DEBUGASSERT(src && dst);
+
+  if (af != AF_INET)
+    {
+      set_errno(EAFNOSUPPORT);
+      return -1;
+    }
+
+  (void)memset(dst, 0, sizeof(struct in_addr));
+
+  ip        = (uint8_t *)dst;
+  srcoffset = 0;
+  numoffset = 0;
+  ndots     = 0;
+
+  for(;;)
+    {
+      ch = (uint8_t)src[srcoffset++];
+
+      if (ch == '.' || ch == '\0')
+        {
+          if (ch == '.' && ndots >= 4)
+            {
+              /* Too many dots */
+
+              break;
+            }
+
+          if (numoffset <= 0)
+            {
+              /* Empty numeric string */
+
+              break;
+            }
+
+          numstr[numoffset] = '\0';
+          numoffset = 0;
+
+          value = atoi(numstr);
+          if (value < 0 || value > 255)
+            {
+              /* Out of range value */
+
+              break;
+            }
+
+          ip[ndots] = (uint8_t)value;
+
+          if (ch == '\0')
+            {
+              if (ndots != 3)
+                {
+                  /* Not enough dots */
+
+                  break;
+                }
+
+              /* Return 1 if the conversion succeeds */
+
+              return 1;
+            }
+
+          ndots++;
+        }
+      else if (ch >= '0' && ch <= '9')
+        {
+          numstr[numoffset++] = ch;
+          if (numoffset >= 4)
+            {
+              /* Number is too long */
+
+              break;
+            }
+        }
+      else
+        {
+          /* Illegal character */
+
+          break;
+        }
+    }
+
+  /* Return zero if there is any problem parsing the input */
+
+  return 0;
+#else
+  size_t srcoffset;
+  size_t numoffset;
+  long value;
+  int nsep;
+  int nrsep;
+  uint8_t ch;
+  char numstr[5];
+  uint8_t ip[sizeof(struct in6_addr)];
+  uint8_t rip[sizeof(struct in6_addr)];
+  bool rtime;
+
+  DEBUGASSERT(src && dst);
+
+  if (af != AF_INET6)
+    {
+      set_errno(EAFNOSUPPORT);
+      return -1;
+    }
+
+  (void)memset(dst, 0, sizeof(struct in6_addr));
+
+  srcoffset = 0;
+  numoffset = 0;
+  nsep      = 0;
+  nrsep     = 0;
+  rtime     = false;
+
+  for(;;)
+    {
+      ch = (uint8_t)src[srcoffset++];
+
+      if (ch == ':' || ch == '\0')
+        {
+          if (ch == ':' && (nsep + nrsep) >= 8)
+            {
+              /* Too many separators */
+
+              break;
+            }
+
+          if (ch != '\0' && numoffset <= 0)
+            {
+              /* Empty numeric string */
+
+              if (rtime && nrsep > 1)
+                {
+                  /* dup simple */
+
+                  break;
+                }
+
+              numoffset = 0;
+              rtime = true;
+              continue;
+            }
+
+          numstr[numoffset] = '\0';
+          numoffset = 0;
+
+          value = strtol(numstr, NULL, 16);
+          if (value < 0 || value > 0xffff)
+            {
+              /* Out of range value */
+
+              break;
+            }
+
+          if (!rtime)
+            {
+              ip[(nsep << 1) + 0] = (uint8_t)((value >> 8) & 0xff);
+              ip[(nsep << 1) + 1] = (uint8_t)((value >> 0) & 0xff);
+              nsep++;
+            }
+          else
+            {
+              rip[(nrsep << 1) + 0] = (uint8_t)((value >> 8) & 0xff);
+              rip[(nrsep << 1) + 1] = (uint8_t)((value >> 0) & 0xff);
+              nrsep++;
+            }
+
+          if (ch == '\0' /* || ch == '/' */)
+            {
+              if ((nsep <= 1 && nrsep <= 0) ||
+                  (nsep + nrsep) < 1 ||
+                  (nsep + nrsep) > 8)
+                {
+                  /* Separator count problem */
+
+                  break;
+                }
+
+              if (nsep > 0)
+                {
+                  memcpy(dst, &ip[0], nsep << 1);
+                }
+
+              if (nrsep > 0)
+                {
+                  memcpy(dst + (16 - (nrsep << 1)), &rip[0], nrsep << 1);
+                }
+
+              /* Return 1 if the conversion succeeds */
+
+              return 1;
+            }
+        }
+      else if ((ch >= '0' && ch <= '9') ||
+               (ch >= 'a' && ch <= 'f') ||
+               (ch >= 'A' && ch <= 'F'))
+        {
+          numstr[numoffset++] = ch;
+          if (numoffset >= 5)
+            {
+              /* Numeric string is too long */
+
+              break;
+            }
+        }
+      else
+        {
+          /* Illegal character */
+
+          break;
+        }
+    }
+
+
+  /* Return zero if there is any problem parsing the input */
+
+  return 0;
+#endif
+}