1998-10-03 07:41:01 +02:00
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/*
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2005-02-01 01:59:09 +01:00
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* Copyright (c) 2004 by Internet Systems Consortium, Inc. ("ISC")
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* Copyright (c) 1996,1999 by Internet Software Consortium.
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1998-10-03 07:41:01 +02:00
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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2005-02-01 01:59:09 +01:00
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* THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
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* OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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2003-11-10 20:40:46 +01:00
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*
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2010-09-20 22:08:53 +02:00
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* src/backend/utils/adt/inet_net_pton.c
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1998-10-03 07:41:01 +02:00
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*/
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2005-02-01 01:59:09 +01:00
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#if defined(LIBC_SCCS) && !defined(lint)
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static const char rcsid[] = "Id: inet_net_pton.c,v 1.4.2.3 2004/03/17 00:40:11 marka Exp $";
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#endif
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2002-09-02 04:47:07 +02:00
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#include "postgres.h"
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|
2005-02-01 01:59:09 +01:00
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#include <sys/types.h>
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1998-10-03 07:41:01 +02:00
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#include <sys/socket.h>
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#include <netinet/in.h>
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#include <arpa/inet.h>
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#include <assert.h>
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#include <ctype.h>
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2003-06-25 00:21:24 +02:00
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#include "utils/inet.h"
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1998-10-03 07:41:01 +02:00
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|
2005-02-01 01:59:09 +01:00
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|
1998-10-22 15:16:27 +02:00
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|
static int inet_net_pton_ipv4(const char *src, u_char *dst);
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static int inet_cidr_pton_ipv4(const char *src, u_char *dst, size_t size);
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2003-08-04 02:43:34 +02:00
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static int inet_net_pton_ipv6(const char *src, u_char *dst);
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static int inet_cidr_pton_ipv6(const char *src, u_char *dst, size_t size);
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1998-10-03 07:41:01 +02:00
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2005-02-01 01:59:09 +01:00
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1998-10-03 07:41:01 +02:00
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/*
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2005-02-01 01:59:09 +01:00
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* int
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1998-10-03 07:41:01 +02:00
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* inet_net_pton(af, src, dst, size)
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* convert network number from presentation to network format.
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* accepts hex octets, hex strings, decimal octets, and /CIDR.
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* "size" is in bytes and describes "dst".
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* return:
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* number of bits, either imputed classfully or specified with /CIDR,
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* or -1 if some failure occurred (check errno). ENOENT means it was
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* not a valid network specification.
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* author:
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* Paul Vixie (ISC), June 1996
|
1998-10-22 15:16:27 +02:00
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*
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* Changes:
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1999-05-25 18:15:34 +02:00
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* I added the inet_cidr_pton function (also from Paul) and changed
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* the names to reflect their current use.
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1998-10-22 15:16:27 +02:00
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*
|
1998-10-03 07:41:01 +02:00
|
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*/
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int
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inet_net_pton(int af, const char *src, void *dst, size_t size)
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{
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switch (af)
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{
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2003-06-25 00:21:24 +02:00
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case PGSQL_AF_INET:
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1998-10-22 15:16:27 +02:00
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|
return size == -1 ?
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2001-10-25 07:50:21 +02:00
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inet_net_pton_ipv4(src, dst) :
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inet_cidr_pton_ipv4(src, dst, size);
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2003-06-25 00:21:24 +02:00
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|
case PGSQL_AF_INET6:
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|
return size == -1 ?
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|
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inet_net_pton_ipv6(src, dst) :
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inet_cidr_pton_ipv6(src, dst, size);
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1998-10-03 07:41:01 +02:00
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|
default:
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|
errno = EAFNOSUPPORT;
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|
return (-1);
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|
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}
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}
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/*
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* static int
|
1998-10-22 15:16:27 +02:00
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* inet_cidr_pton_ipv4(src, dst, size)
|
1998-10-03 07:41:01 +02:00
|
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* convert IPv4 network number from presentation to network format.
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* accepts hex octets, hex strings, decimal octets, and /CIDR.
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|
* "size" is in bytes and describes "dst".
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|
* return:
|
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|
|
* number of bits, either imputed classfully or specified with /CIDR,
|
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|
|
* or -1 if some failure occurred (check errno). ENOENT means it was
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|
|
* not an IPv4 network specification.
|
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|
|
* note:
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|
|
* network byte order assumed. this means 192.5.5.240/28 has
|
2005-02-01 01:59:09 +01:00
|
|
|
* 0b11110000 in its fourth octet.
|
1998-10-03 07:41:01 +02:00
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|
* author:
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|
* Paul Vixie (ISC), June 1996
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|
*/
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|
|
static int
|
1998-10-22 15:16:27 +02:00
|
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|
inet_cidr_pton_ipv4(const char *src, u_char *dst, size_t size)
|
1998-10-03 07:41:01 +02:00
|
|
|
{
|
2005-02-01 01:59:09 +01:00
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|
static const char xdigits[] = "0123456789abcdef";
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static const char digits[] = "0123456789";
|
1998-10-03 07:41:01 +02:00
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|
int n,
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ch,
|
2005-02-01 01:59:09 +01:00
|
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|
tmp = 0,
|
1998-10-03 07:41:01 +02:00
|
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|
dirty,
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bits;
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const u_char *odst = dst;
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ch = *src++;
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if (ch == '0' && (src[0] == 'x' || src[0] == 'X')
|
2000-12-03 21:45:40 +01:00
|
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|
&& isxdigit((unsigned char) src[1]))
|
1999-05-25 18:15:34 +02:00
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|
{
|
1998-10-03 07:41:01 +02:00
|
|
|
/* Hexadecimal: Eat nybble string. */
|
2005-02-01 01:59:09 +01:00
|
|
|
if (size <= 0U)
|
1998-10-03 07:41:01 +02:00
|
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|
goto emsgsize;
|
1998-10-12 17:56:34 +02:00
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dirty = 0;
|
1999-05-25 18:15:34 +02:00
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|
src++; /* skip x or X. */
|
2000-12-03 21:45:40 +01:00
|
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|
while ((ch = *src++) != '\0' && isxdigit((unsigned char) ch))
|
1999-05-25 18:15:34 +02:00
|
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|
{
|
2000-12-03 21:45:40 +01:00
|
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|
if (isupper((unsigned char) ch))
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ch = tolower((unsigned char) ch);
|
1998-10-03 07:41:01 +02:00
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n = strchr(xdigits, ch) - xdigits;
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assert(n >= 0 && n <= 15);
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1998-10-17 05:59:14 +02:00
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if (dirty == 0)
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tmp = n;
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else
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tmp = (tmp << 4) | n;
|
1999-05-25 18:15:34 +02:00
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if (++dirty == 2)
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|
{
|
2005-02-01 01:59:09 +01:00
|
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|
if (size-- <= 0U)
|
1998-10-12 17:56:34 +02:00
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|
goto emsgsize;
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*dst++ = (u_char) tmp;
|
1998-10-17 05:59:14 +02:00
|
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|
dirty = 0;
|
1998-10-12 17:56:34 +02:00
|
|
|
}
|
|
|
|
}
|
1999-05-25 18:15:34 +02:00
|
|
|
if (dirty)
|
|
|
|
{ /* Odd trailing nybble? */
|
2005-02-01 01:59:09 +01:00
|
|
|
if (size-- <= 0U)
|
1998-10-03 07:41:01 +02:00
|
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|
goto emsgsize;
|
1998-10-17 05:59:14 +02:00
|
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|
*dst++ = (u_char) (tmp << 4);
|
1998-10-03 07:41:01 +02:00
|
|
|
}
|
|
|
|
}
|
2000-12-03 21:45:40 +01:00
|
|
|
else if (isdigit((unsigned char) ch))
|
1998-10-03 07:41:01 +02:00
|
|
|
{
|
|
|
|
/* Decimal: eat dotted digit string. */
|
|
|
|
for (;;)
|
|
|
|
{
|
|
|
|
tmp = 0;
|
|
|
|
do
|
|
|
|
{
|
|
|
|
n = strchr(digits, ch) - digits;
|
|
|
|
assert(n >= 0 && n <= 9);
|
|
|
|
tmp *= 10;
|
|
|
|
tmp += n;
|
|
|
|
if (tmp > 255)
|
|
|
|
goto enoent;
|
|
|
|
} while ((ch = *src++) != '\0' &&
|
2000-12-03 21:45:40 +01:00
|
|
|
isdigit((unsigned char) ch));
|
2005-02-01 01:59:09 +01:00
|
|
|
if (size-- <= 0U)
|
1998-10-03 07:41:01 +02:00
|
|
|
goto emsgsize;
|
|
|
|
*dst++ = (u_char) tmp;
|
|
|
|
if (ch == '\0' || ch == '/')
|
|
|
|
break;
|
|
|
|
if (ch != '.')
|
|
|
|
goto enoent;
|
|
|
|
ch = *src++;
|
2000-12-03 21:45:40 +01:00
|
|
|
if (!isdigit((unsigned char) ch))
|
1998-10-03 07:41:01 +02:00
|
|
|
goto enoent;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
else
|
|
|
|
goto enoent;
|
|
|
|
|
|
|
|
bits = -1;
|
2000-12-03 21:45:40 +01:00
|
|
|
if (ch == '/' && isdigit((unsigned char) src[0]) && dst > odst)
|
1998-10-03 07:41:01 +02:00
|
|
|
{
|
|
|
|
/* CIDR width specifier. Nothing can follow it. */
|
|
|
|
ch = *src++; /* Skip over the /. */
|
|
|
|
bits = 0;
|
|
|
|
do
|
|
|
|
{
|
|
|
|
n = strchr(digits, ch) - digits;
|
|
|
|
assert(n >= 0 && n <= 9);
|
|
|
|
bits *= 10;
|
|
|
|
bits += n;
|
2000-12-03 21:45:40 +01:00
|
|
|
} while ((ch = *src++) != '\0' && isdigit((unsigned char) ch));
|
1998-10-03 07:41:01 +02:00
|
|
|
if (ch != '\0')
|
|
|
|
goto enoent;
|
|
|
|
if (bits > 32)
|
|
|
|
goto emsgsize;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Firey death and destruction unless we prefetched EOS. */
|
|
|
|
if (ch != '\0')
|
|
|
|
goto enoent;
|
|
|
|
|
|
|
|
/* If nothing was written to the destination, we found no address. */
|
|
|
|
if (dst == odst)
|
|
|
|
goto enoent;
|
|
|
|
/* If no CIDR spec was given, infer width from net class. */
|
|
|
|
if (bits == -1)
|
|
|
|
{
|
|
|
|
if (*odst >= 240) /* Class E */
|
|
|
|
bits = 32;
|
|
|
|
else if (*odst >= 224) /* Class D */
|
2005-02-01 01:59:09 +01:00
|
|
|
bits = 8;
|
1998-10-03 07:41:01 +02:00
|
|
|
else if (*odst >= 192) /* Class C */
|
|
|
|
bits = 24;
|
|
|
|
else if (*odst >= 128) /* Class B */
|
|
|
|
bits = 16;
|
2005-10-15 04:49:52 +02:00
|
|
|
else
|
|
|
|
/* Class A */
|
1998-10-03 07:41:01 +02:00
|
|
|
bits = 8;
|
|
|
|
/* If imputed mask is narrower than specified octets, widen. */
|
2005-02-01 01:59:09 +01:00
|
|
|
if (bits < ((dst - odst) * 8))
|
1998-10-03 07:41:01 +02:00
|
|
|
bits = (dst - odst) * 8;
|
2005-02-01 01:59:09 +01:00
|
|
|
|
|
|
|
/*
|
|
|
|
* If there are no additional bits specified for a class D address
|
|
|
|
* adjust bits to 4.
|
|
|
|
*/
|
|
|
|
if (bits == 8 && *odst == 224)
|
|
|
|
bits = 4;
|
1998-10-03 07:41:01 +02:00
|
|
|
}
|
|
|
|
/* Extend network to cover the actual mask. */
|
|
|
|
while (bits > ((dst - odst) * 8))
|
|
|
|
{
|
2005-02-01 01:59:09 +01:00
|
|
|
if (size-- <= 0U)
|
1998-10-03 07:41:01 +02:00
|
|
|
goto emsgsize;
|
|
|
|
*dst++ = '\0';
|
|
|
|
}
|
|
|
|
return (bits);
|
|
|
|
|
|
|
|
enoent:
|
|
|
|
errno = ENOENT;
|
|
|
|
return (-1);
|
|
|
|
|
|
|
|
emsgsize:
|
|
|
|
errno = EMSGSIZE;
|
|
|
|
return (-1);
|
|
|
|
}
|
1998-10-22 15:16:27 +02:00
|
|
|
|
|
|
|
/*
|
|
|
|
* int
|
|
|
|
* inet_net_pton(af, src, dst, *bits)
|
1999-05-25 18:15:34 +02:00
|
|
|
* convert network address from presentation to network format.
|
|
|
|
* accepts inet_pton()'s input for this "af" plus trailing "/CIDR".
|
|
|
|
* "dst" is assumed large enough for its "af". "bits" is set to the
|
|
|
|
* /CIDR prefix length, which can have defaults (like /32 for IPv4).
|
1998-10-22 15:16:27 +02:00
|
|
|
* return:
|
1999-05-25 18:15:34 +02:00
|
|
|
* -1 if an error occurred (inspect errno; ENOENT means bad format).
|
|
|
|
* 0 if successful conversion occurred.
|
|
|
|
* note:
|
|
|
|
* 192.5.5.1/28 has a nonzero host part, which means it isn't a network
|
|
|
|
* as called for by inet_cidr_pton() but it can be a host address with
|
|
|
|
* an included netmask.
|
1998-10-22 15:16:27 +02:00
|
|
|
* author:
|
1999-05-25 18:15:34 +02:00
|
|
|
* Paul Vixie (ISC), October 1998
|
1998-10-22 15:16:27 +02:00
|
|
|
*/
|
|
|
|
static int
|
|
|
|
inet_net_pton_ipv4(const char *src, u_char *dst)
|
|
|
|
{
|
|
|
|
static const char digits[] = "0123456789";
|
|
|
|
const u_char *odst = dst;
|
1999-05-25 18:15:34 +02:00
|
|
|
int n,
|
|
|
|
ch,
|
|
|
|
tmp,
|
|
|
|
bits;
|
|
|
|
size_t size = 4;
|
1998-10-22 15:16:27 +02:00
|
|
|
|
|
|
|
/* Get the mantissa. */
|
2000-12-03 21:45:40 +01:00
|
|
|
while (ch = *src++, isdigit((unsigned char) ch))
|
1998-10-22 15:16:27 +02:00
|
|
|
{
|
|
|
|
tmp = 0;
|
|
|
|
do
|
|
|
|
{
|
|
|
|
n = strchr(digits, ch) - digits;
|
|
|
|
assert(n >= 0 && n <= 9);
|
|
|
|
tmp *= 10;
|
|
|
|
tmp += n;
|
|
|
|
if (tmp > 255)
|
|
|
|
goto enoent;
|
2000-12-03 21:45:40 +01:00
|
|
|
} while ((ch = *src++) != '\0' && isdigit((unsigned char) ch));
|
1998-10-22 15:16:27 +02:00
|
|
|
if (size-- == 0)
|
|
|
|
goto emsgsize;
|
|
|
|
*dst++ = (u_char) tmp;
|
|
|
|
if (ch == '\0' || ch == '/')
|
|
|
|
break;
|
|
|
|
if (ch != '.')
|
|
|
|
goto enoent;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Get the prefix length if any. */
|
|
|
|
bits = -1;
|
2000-12-03 21:45:40 +01:00
|
|
|
if (ch == '/' && isdigit((unsigned char) src[0]) && dst > odst)
|
1998-10-22 15:16:27 +02:00
|
|
|
{
|
|
|
|
/* CIDR width specifier. Nothing can follow it. */
|
1999-05-25 18:15:34 +02:00
|
|
|
ch = *src++; /* Skip over the /. */
|
1998-10-22 15:16:27 +02:00
|
|
|
bits = 0;
|
|
|
|
do
|
|
|
|
{
|
|
|
|
n = strchr(digits, ch) - digits;
|
|
|
|
assert(n >= 0 && n <= 9);
|
|
|
|
bits *= 10;
|
|
|
|
bits += n;
|
2000-12-03 21:45:40 +01:00
|
|
|
} while ((ch = *src++) != '\0' && isdigit((unsigned char) ch));
|
1998-10-22 15:16:27 +02:00
|
|
|
if (ch != '\0')
|
|
|
|
goto enoent;
|
|
|
|
if (bits > 32)
|
|
|
|
goto emsgsize;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Firey death and destruction unless we prefetched EOS. */
|
|
|
|
if (ch != '\0')
|
|
|
|
goto enoent;
|
|
|
|
|
|
|
|
/* Prefix length can default to /32 only if all four octets spec'd. */
|
|
|
|
if (bits == -1)
|
|
|
|
{
|
|
|
|
if (dst - odst == 4)
|
|
|
|
bits = 32;
|
|
|
|
else
|
|
|
|
goto enoent;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* If nothing was written to the destination, we found no address. */
|
|
|
|
if (dst == odst)
|
|
|
|
goto enoent;
|
|
|
|
|
|
|
|
/* If prefix length overspecifies mantissa, life is bad. */
|
|
|
|
if ((bits / 8) > (dst - odst))
|
|
|
|
goto enoent;
|
|
|
|
|
|
|
|
/* Extend address to four octets. */
|
|
|
|
while (size-- > 0)
|
|
|
|
*dst++ = 0;
|
|
|
|
|
|
|
|
return bits;
|
|
|
|
|
1999-05-25 18:15:34 +02:00
|
|
|
enoent:
|
1998-10-22 15:16:27 +02:00
|
|
|
errno = ENOENT;
|
|
|
|
return (-1);
|
|
|
|
|
1999-05-25 18:15:34 +02:00
|
|
|
emsgsize:
|
1998-10-22 15:16:27 +02:00
|
|
|
errno = EMSGSIZE;
|
|
|
|
return (-1);
|
|
|
|
}
|
2003-06-25 00:21:24 +02:00
|
|
|
|
|
|
|
static int
|
2003-08-04 02:43:34 +02:00
|
|
|
getbits(const char *src, int *bitsp)
|
|
|
|
{
|
2003-06-25 00:21:24 +02:00
|
|
|
static const char digits[] = "0123456789";
|
2003-08-04 02:43:34 +02:00
|
|
|
int n;
|
|
|
|
int val;
|
|
|
|
char ch;
|
2003-06-25 00:21:24 +02:00
|
|
|
|
|
|
|
val = 0;
|
|
|
|
n = 0;
|
2003-08-04 02:43:34 +02:00
|
|
|
while ((ch = *src++) != '\0')
|
|
|
|
{
|
2003-06-25 00:21:24 +02:00
|
|
|
const char *pch;
|
|
|
|
|
|
|
|
pch = strchr(digits, ch);
|
2003-08-04 02:43:34 +02:00
|
|
|
if (pch != NULL)
|
|
|
|
{
|
2003-06-25 00:21:24 +02:00
|
|
|
if (n++ != 0 && val == 0) /* no leading zeros */
|
|
|
|
return (0);
|
|
|
|
val *= 10;
|
|
|
|
val += (pch - digits);
|
2003-08-04 02:43:34 +02:00
|
|
|
if (val > 128) /* range */
|
2003-06-25 00:21:24 +02:00
|
|
|
return (0);
|
|
|
|
continue;
|
|
|
|
}
|
|
|
|
return (0);
|
|
|
|
}
|
|
|
|
if (n == 0)
|
|
|
|
return (0);
|
|
|
|
*bitsp = val;
|
|
|
|
return (1);
|
|
|
|
}
|
|
|
|
|
|
|
|
static int
|
2003-08-04 02:43:34 +02:00
|
|
|
getv4(const char *src, u_char *dst, int *bitsp)
|
|
|
|
{
|
2003-06-25 00:21:24 +02:00
|
|
|
static const char digits[] = "0123456789";
|
2003-08-04 02:43:34 +02:00
|
|
|
u_char *odst = dst;
|
|
|
|
int n;
|
|
|
|
u_int val;
|
|
|
|
char ch;
|
2003-06-25 00:21:24 +02:00
|
|
|
|
|
|
|
val = 0;
|
|
|
|
n = 0;
|
2003-08-04 02:43:34 +02:00
|
|
|
while ((ch = *src++) != '\0')
|
|
|
|
{
|
2003-06-25 00:21:24 +02:00
|
|
|
const char *pch;
|
|
|
|
|
|
|
|
pch = strchr(digits, ch);
|
2003-08-04 02:43:34 +02:00
|
|
|
if (pch != NULL)
|
|
|
|
{
|
2003-06-25 00:21:24 +02:00
|
|
|
if (n++ != 0 && val == 0) /* no leading zeros */
|
|
|
|
return (0);
|
|
|
|
val *= 10;
|
|
|
|
val += (pch - digits);
|
2003-08-04 02:43:34 +02:00
|
|
|
if (val > 255) /* range */
|
2003-06-25 00:21:24 +02:00
|
|
|
return (0);
|
|
|
|
continue;
|
|
|
|
}
|
2003-08-04 02:43:34 +02:00
|
|
|
if (ch == '.' || ch == '/')
|
|
|
|
{
|
|
|
|
if (dst - odst > 3) /* too many octets? */
|
2003-06-25 00:21:24 +02:00
|
|
|
return (0);
|
|
|
|
*dst++ = val;
|
|
|
|
if (ch == '/')
|
|
|
|
return (getbits(src, bitsp));
|
|
|
|
val = 0;
|
|
|
|
n = 0;
|
|
|
|
continue;
|
|
|
|
}
|
|
|
|
return (0);
|
|
|
|
}
|
|
|
|
if (n == 0)
|
|
|
|
return (0);
|
2003-08-04 02:43:34 +02:00
|
|
|
if (dst - odst > 3) /* too many octets? */
|
2003-06-25 00:21:24 +02:00
|
|
|
return (0);
|
|
|
|
*dst++ = val;
|
|
|
|
return (1);
|
|
|
|
}
|
|
|
|
|
|
|
|
static int
|
|
|
|
inet_net_pton_ipv6(const char *src, u_char *dst)
|
|
|
|
{
|
|
|
|
return inet_cidr_pton_ipv6(src, dst, 16);
|
|
|
|
}
|
|
|
|
|
|
|
|
#define NS_IN6ADDRSZ 16
|
|
|
|
#define NS_INT16SZ 2
|
|
|
|
#define NS_INADDRSZ 4
|
|
|
|
|
|
|
|
static int
|
2003-08-04 02:43:34 +02:00
|
|
|
inet_cidr_pton_ipv6(const char *src, u_char *dst, size_t size)
|
|
|
|
{
|
2003-06-25 00:21:24 +02:00
|
|
|
static const char xdigits_l[] = "0123456789abcdef",
|
2003-08-04 02:43:34 +02:00
|
|
|
xdigits_u[] = "0123456789ABCDEF";
|
|
|
|
u_char tmp[NS_IN6ADDRSZ],
|
|
|
|
*tp,
|
|
|
|
*endp,
|
|
|
|
*colonp;
|
|
|
|
const char *xdigits,
|
|
|
|
*curtok;
|
|
|
|
int ch,
|
|
|
|
saw_xdigit;
|
|
|
|
u_int val;
|
|
|
|
int digits;
|
|
|
|
int bits;
|
2003-06-25 00:21:24 +02:00
|
|
|
|
|
|
|
if (size < NS_IN6ADDRSZ)
|
|
|
|
goto emsgsize;
|
|
|
|
|
|
|
|
memset((tp = tmp), '\0', NS_IN6ADDRSZ);
|
|
|
|
endp = tp + NS_IN6ADDRSZ;
|
|
|
|
colonp = NULL;
|
|
|
|
/* Leading :: requires some special handling. */
|
|
|
|
if (*src == ':')
|
|
|
|
if (*++src != ':')
|
|
|
|
goto enoent;
|
|
|
|
curtok = src;
|
|
|
|
saw_xdigit = 0;
|
|
|
|
val = 0;
|
|
|
|
digits = 0;
|
|
|
|
bits = -1;
|
2003-08-04 02:43:34 +02:00
|
|
|
while ((ch = *src++) != '\0')
|
|
|
|
{
|
2003-06-25 00:21:24 +02:00
|
|
|
const char *pch;
|
|
|
|
|
|
|
|
if ((pch = strchr((xdigits = xdigits_l), ch)) == NULL)
|
|
|
|
pch = strchr((xdigits = xdigits_u), ch);
|
2003-08-04 02:43:34 +02:00
|
|
|
if (pch != NULL)
|
|
|
|
{
|
2003-06-25 00:21:24 +02:00
|
|
|
val <<= 4;
|
|
|
|
val |= (pch - xdigits);
|
|
|
|
if (++digits > 4)
|
|
|
|
goto enoent;
|
|
|
|
saw_xdigit = 1;
|
|
|
|
continue;
|
|
|
|
}
|
2003-08-04 02:43:34 +02:00
|
|
|
if (ch == ':')
|
|
|
|
{
|
2003-06-25 00:21:24 +02:00
|
|
|
curtok = src;
|
2003-08-04 02:43:34 +02:00
|
|
|
if (!saw_xdigit)
|
|
|
|
{
|
2003-06-25 00:21:24 +02:00
|
|
|
if (colonp)
|
|
|
|
goto enoent;
|
|
|
|
colonp = tp;
|
|
|
|
continue;
|
2003-08-04 02:43:34 +02:00
|
|
|
}
|
|
|
|
else if (*src == '\0')
|
2003-06-25 00:21:24 +02:00
|
|
|
goto enoent;
|
|
|
|
if (tp + NS_INT16SZ > endp)
|
|
|
|
return (0);
|
|
|
|
*tp++ = (u_char) (val >> 8) & 0xff;
|
|
|
|
*tp++ = (u_char) val & 0xff;
|
|
|
|
saw_xdigit = 0;
|
|
|
|
digits = 0;
|
|
|
|
val = 0;
|
|
|
|
continue;
|
|
|
|
}
|
|
|
|
if (ch == '.' && ((tp + NS_INADDRSZ) <= endp) &&
|
2003-08-04 02:43:34 +02:00
|
|
|
getv4(curtok, tp, &bits) > 0)
|
|
|
|
{
|
2003-06-25 00:21:24 +02:00
|
|
|
tp += NS_INADDRSZ;
|
|
|
|
saw_xdigit = 0;
|
2003-08-04 02:43:34 +02:00
|
|
|
break; /* '\0' was seen by inet_pton4(). */
|
2003-06-25 00:21:24 +02:00
|
|
|
}
|
|
|
|
if (ch == '/' && getbits(src, &bits) > 0)
|
|
|
|
break;
|
|
|
|
goto enoent;
|
|
|
|
}
|
2003-08-04 02:43:34 +02:00
|
|
|
if (saw_xdigit)
|
|
|
|
{
|
2003-06-25 00:21:24 +02:00
|
|
|
if (tp + NS_INT16SZ > endp)
|
|
|
|
goto enoent;
|
|
|
|
*tp++ = (u_char) (val >> 8) & 0xff;
|
|
|
|
*tp++ = (u_char) val & 0xff;
|
|
|
|
}
|
|
|
|
if (bits == -1)
|
|
|
|
bits = 128;
|
|
|
|
|
2003-08-04 02:43:34 +02:00
|
|
|
endp = tmp + 16;
|
2003-06-25 00:21:24 +02:00
|
|
|
|
2003-08-04 02:43:34 +02:00
|
|
|
if (colonp != NULL)
|
|
|
|
{
|
2003-06-25 00:21:24 +02:00
|
|
|
/*
|
2003-08-04 02:43:34 +02:00
|
|
|
* Since some memmove()'s erroneously fail to handle overlapping
|
|
|
|
* regions, we'll do the shift by hand.
|
2003-06-25 00:21:24 +02:00
|
|
|
*/
|
2003-08-04 02:43:34 +02:00
|
|
|
const int n = tp - colonp;
|
|
|
|
int i;
|
2003-06-25 00:21:24 +02:00
|
|
|
|
|
|
|
if (tp == endp)
|
|
|
|
goto enoent;
|
2003-08-04 02:43:34 +02:00
|
|
|
for (i = 1; i <= n; i++)
|
|
|
|
{
|
|
|
|
endp[-i] = colonp[n - i];
|
2003-06-25 00:21:24 +02:00
|
|
|
colonp[n - i] = 0;
|
|
|
|
}
|
|
|
|
tp = endp;
|
|
|
|
}
|
|
|
|
if (tp != endp)
|
|
|
|
goto enoent;
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Copy out the result.
|
|
|
|
*/
|
|
|
|
memcpy(dst, tmp, NS_IN6ADDRSZ);
|
|
|
|
|
|
|
|
return (bits);
|
|
|
|
|
2003-08-04 02:43:34 +02:00
|
|
|
enoent:
|
2003-06-25 00:21:24 +02:00
|
|
|
errno = ENOENT;
|
|
|
|
return (-1);
|
|
|
|
|
2003-08-04 02:43:34 +02:00
|
|
|
emsgsize:
|
2003-06-25 00:21:24 +02:00
|
|
|
errno = EMSGSIZE;
|
|
|
|
return (-1);
|
|
|
|
}
|