2012-11-10 17:06:01 +01:00
|
|
|
/****************************************************************************
|
2018-05-29 21:21:26 +02:00
|
|
|
* libs/libc/net/lib_inetpton.c
|
2012-11-10 17:06:01 +01:00
|
|
|
*
|
|
|
|
* 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>
|
2014-07-05 03:13:08 +02:00
|
|
|
#include <netinet/in.h>
|
2012-11-10 17:06:01 +01:00
|
|
|
|
2015-07-09 00:45:42 +02:00
|
|
|
/****************************************************************************
|
|
|
|
* Pre-processor Definitions
|
|
|
|
****************************************************************************/
|
|
|
|
|
|
|
|
/* If netdb support is enabled, then we need to be able to manage IPv4 and
|
|
|
|
* IPv6 addresses, regardless of networking support.
|
|
|
|
*/
|
|
|
|
|
2015-07-10 20:11:40 +02:00
|
|
|
#ifdef CONFIG_NETDB_HOSTFILE
|
2016-12-04 16:06:08 +01:00
|
|
|
# undef CONFIG_LIBC_IPv4_ADDRCONV
|
|
|
|
# undef CONFIG_LIBC_IPv6_ADDRCONV
|
|
|
|
# define CONFIG_LIBC_IPv4_ADDRCONV 1
|
|
|
|
# define CONFIG_LIBC_IPv6_ADDRCONV 1
|
2015-07-09 00:45:42 +02:00
|
|
|
#endif
|
|
|
|
|
2012-11-10 17:06:01 +01:00
|
|
|
/****************************************************************************
|
2015-01-15 19:19:44 +01:00
|
|
|
* Private Functions
|
2012-11-10 17:06:01 +01:00
|
|
|
****************************************************************************/
|
|
|
|
|
|
|
|
/****************************************************************************
|
2015-01-15 19:19:44 +01:00
|
|
|
* Name: inet_ipv4_pton
|
2012-11-10 17:06:01 +01:00
|
|
|
*
|
|
|
|
* Description:
|
2015-01-15 19:19:44 +01:00
|
|
|
* The inet_ipv4_pton() function converts an IPv4 address in its standard
|
|
|
|
* text presentation form into its numeric binary form.
|
2012-11-10 17:06:01 +01:00
|
|
|
*
|
|
|
|
* Input Parameters:
|
|
|
|
* src - The src argument points to the string being passed in.
|
2015-01-15 19:19:44 +01:00
|
|
|
* dest - The dest argument points to a numstr into which the function stores
|
2012-11-10 17:06:01 +01:00
|
|
|
* 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:
|
2015-07-17 16:24:21 +02:00
|
|
|
* inet_ipv4_pton() will returns 1 if the conversion succeeds. It will
|
|
|
|
* return 0 if the input is not a valid IPv4 dotted-decimal string string.
|
2012-11-10 17:06:01 +01:00
|
|
|
*
|
|
|
|
****************************************************************************/
|
|
|
|
|
2016-12-04 16:06:08 +01:00
|
|
|
#if defined(CONFIG_NET_IPv4) || defined(CONFIG_LIBC_IPv4_ADDRCONV)
|
2015-01-15 19:19:44 +01:00
|
|
|
static int inet_ipv4_pton(FAR const char *src, FAR void *dest)
|
2012-11-10 17:06:01 +01:00
|
|
|
{
|
|
|
|
size_t srcoffset;
|
|
|
|
size_t numoffset;
|
|
|
|
int value;
|
|
|
|
int ndots;
|
|
|
|
uint8_t ch;
|
|
|
|
char numstr[4];
|
|
|
|
uint8_t *ip;
|
|
|
|
|
2020-01-02 17:49:34 +01:00
|
|
|
memset(dest, 0, sizeof(struct in_addr));
|
2012-11-10 17:06:01 +01:00
|
|
|
|
2015-01-15 19:19:44 +01:00
|
|
|
ip = (uint8_t *)dest;
|
2012-11-10 17:06:01 +01:00
|
|
|
srcoffset = 0;
|
|
|
|
numoffset = 0;
|
|
|
|
ndots = 0;
|
|
|
|
|
2015-10-12 15:45:02 +02:00
|
|
|
for (; ; )
|
2012-11-10 17:06:01 +01:00
|
|
|
{
|
|
|
|
ch = (uint8_t)src[srcoffset++];
|
|
|
|
|
|
|
|
if (ch == '.' || ch == '\0')
|
|
|
|
{
|
|
|
|
if (ch == '.' && ndots >= 4)
|
|
|
|
{
|
|
|
|
/* Too many dots */
|
|
|
|
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
2014-11-25 20:46:14 +01:00
|
|
|
if (numoffset < 1)
|
2012-11-10 17:06:01 +01:00
|
|
|
{
|
|
|
|
/* 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;
|
2015-01-15 19:19:44 +01:00
|
|
|
}
|
|
|
|
#endif
|
|
|
|
|
|
|
|
/****************************************************************************
|
|
|
|
* Name: inet_ipv6_pton
|
|
|
|
*
|
|
|
|
* Description:
|
|
|
|
* The inet_ipv6_pton() function converts an IPv6 address in its standard
|
|
|
|
* text presentation form into its numeric binary form.
|
|
|
|
*
|
|
|
|
* Input Parameters:
|
|
|
|
* src - The src argument points to the string being passed in.
|
|
|
|
* dest - The dest 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:
|
2015-07-17 16:24:21 +02:00
|
|
|
* inet_ipv6_pton() will returns 1 if the conversion succeeds. It will
|
|
|
|
* return 0 if the input is not a valid IPv6 address string.
|
2015-01-15 19:19:44 +01:00
|
|
|
*
|
|
|
|
****************************************************************************/
|
|
|
|
|
2016-12-04 16:06:08 +01:00
|
|
|
#if defined(CONFIG_NET_IPv6) || defined(CONFIG_LIBC_IPv6_ADDRCONV)
|
2015-01-15 19:19:44 +01:00
|
|
|
static int inet_ipv6_pton(FAR const char *src, FAR void *dest)
|
|
|
|
{
|
2012-11-10 17:06:01 +01:00
|
|
|
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;
|
|
|
|
|
2020-01-02 17:49:34 +01:00
|
|
|
memset(dest, 0, sizeof(struct in6_addr));
|
2012-11-10 17:06:01 +01:00
|
|
|
|
|
|
|
srcoffset = 0;
|
|
|
|
numoffset = 0;
|
|
|
|
nsep = 0;
|
|
|
|
nrsep = 0;
|
|
|
|
rtime = false;
|
|
|
|
|
2015-10-12 15:45:02 +02:00
|
|
|
for (; ; )
|
2012-11-10 17:06:01 +01:00
|
|
|
{
|
|
|
|
ch = (uint8_t)src[srcoffset++];
|
|
|
|
|
|
|
|
if (ch == ':' || ch == '\0')
|
|
|
|
{
|
|
|
|
if (ch == ':' && (nsep + nrsep) >= 8)
|
|
|
|
{
|
|
|
|
/* Too many separators */
|
|
|
|
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
2014-11-25 20:46:14 +01:00
|
|
|
if (ch != '\0' && numoffset < 1)
|
2012-11-10 17:06:01 +01:00
|
|
|
{
|
|
|
|
/* 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)
|
|
|
|
{
|
2015-01-15 19:19:44 +01:00
|
|
|
memcpy(dest, &ip[0], nsep << 1);
|
2012-11-10 17:06:01 +01:00
|
|
|
}
|
|
|
|
|
|
|
|
if (nrsep > 0)
|
|
|
|
{
|
2015-01-15 19:19:44 +01:00
|
|
|
memcpy(dest + (16 - (nrsep << 1)), &rip[0], nrsep << 1);
|
2012-11-10 17:06:01 +01:00
|
|
|
}
|
|
|
|
|
|
|
|
/* 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;
|
2015-01-15 19:19:44 +01:00
|
|
|
}
|
|
|
|
#endif
|
|
|
|
|
|
|
|
/****************************************************************************
|
|
|
|
* 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.
|
2016-01-13 22:06:44 +01:00
|
|
|
* dest - The dest argument points to memory into which the function stores
|
2015-01-15 19:19:44 +01:00
|
|
|
* 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 dest in network byte order. It will return 0 if the
|
|
|
|
* input is not a valid IPv4 dotted-decimal string or a valid IPv6 address
|
2015-07-17 16:24:21 +02:00
|
|
|
* string, or -1 with errno set to EAFNOSUPPORT if the af argument is
|
2015-01-15 19:19:44 +01:00
|
|
|
* unknown.
|
|
|
|
*
|
|
|
|
****************************************************************************/
|
|
|
|
|
|
|
|
int inet_pton(int af, FAR const char *src, FAR void *dest)
|
|
|
|
{
|
|
|
|
DEBUGASSERT(src && dest);
|
|
|
|
|
|
|
|
/* Do the conversion according to the IP version */
|
|
|
|
|
|
|
|
switch (af)
|
|
|
|
{
|
2016-12-04 16:06:08 +01:00
|
|
|
#if defined(CONFIG_NET_IPv4) || defined(CONFIG_LIBC_IPv4_ADDRCONV)
|
2015-01-15 19:19:44 +01:00
|
|
|
case AF_INET:
|
|
|
|
return inet_ipv4_pton(src, dest);
|
|
|
|
#endif
|
|
|
|
|
2016-12-04 16:06:08 +01:00
|
|
|
#if defined(CONFIG_NET_IPv6) || defined(CONFIG_LIBC_IPv6_ADDRCONV)
|
2015-01-15 19:19:44 +01:00
|
|
|
case AF_INET6:
|
|
|
|
return inet_ipv6_pton(src, dest);
|
2012-11-10 17:06:01 +01:00
|
|
|
#endif
|
2015-01-15 19:19:44 +01:00
|
|
|
|
|
|
|
default:
|
|
|
|
set_errno(EAFNOSUPPORT);
|
|
|
|
return ERROR;
|
|
|
|
}
|
2012-11-10 17:06:01 +01:00
|
|
|
}
|