/*
- * Copyright (c) 1996 by Internet Software Consortium.
+ * Copyright (c) 2004 by Internet Systems Consortium, Inc. ("ISC")
+ * Copyright (c) 1996,1999 by Internet Software Consortium.
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
- * THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM DISCLAIMS
- * ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES
- * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL INTERNET SOFTWARE
- * CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
- * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
- * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
- * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
- * SOFTWARE.
+ * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
+ * OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ *
+ * src/backend/utils/adt/inet_net_pton.c
*/
#if defined(LIBC_SCCS) && !defined(lint)
-static const char rcsid[] = "$Id: inet_net_pton.c,v 1.14 2002/09/02 02:47:04 momjian Exp $";
+static const char rcsid[] = "Id: inet_net_pton.c,v 1.4.2.3 2004/03/17 00:40:11 marka Exp $";
#endif
#include "postgres.h"
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
-
#include <assert.h>
#include <ctype.h>
-#include <errno.h>
-#include "utils/builtins.h"
+#include "utils/builtins.h" /* pgrminclude ignore */ /* needed on some
+ * platforms */
+#include "utils/inet.h"
-#ifdef SPRINTF_CHAR
-#define SPRINTF(x) strlen(sprintf/**/x)
-#else
-#define SPRINTF(x) ((size_t)sprintf x)
-#endif
static int inet_net_pton_ipv4(const char *src, u_char *dst);
static int inet_cidr_pton_ipv4(const char *src, u_char *dst, size_t size);
+static int inet_net_pton_ipv6(const char *src, u_char *dst);
+static int inet_cidr_pton_ipv6(const char *src, u_char *dst, size_t size);
+
/*
- * static int
+ * int
* inet_net_pton(af, src, dst, size)
* convert network number from presentation to network format.
* accepts hex octets, hex strings, decimal octets, and /CIDR.
{
switch (af)
{
- case AF_INET:
+ case PGSQL_AF_INET:
return size == -1 ?
inet_net_pton_ipv4(src, dst) :
inet_cidr_pton_ipv4(src, dst, size);
+ case PGSQL_AF_INET6:
+ return size == -1 ?
+ inet_net_pton_ipv6(src, dst) :
+ inet_cidr_pton_ipv6(src, dst, size);
default:
errno = EAFNOSUPPORT;
return (-1);
* not an IPv4 network specification.
* note:
* network byte order assumed. this means 192.5.5.240/28 has
- * 0x11110000 in its fourth octet.
+ * 0b11110000 in its fourth octet.
* author:
* Paul Vixie (ISC), June 1996
*/
static int
inet_cidr_pton_ipv4(const char *src, u_char *dst, size_t size)
{
- static const char
- xdigits[] = "0123456789abcdef",
- digits[] = "0123456789";
+ static const char xdigits[] = "0123456789abcdef";
+ static const char digits[] = "0123456789";
int n,
ch,
- tmp,
+ tmp = 0,
dirty,
bits;
const u_char *odst = dst;
&& isxdigit((unsigned char) src[1]))
{
/* Hexadecimal: Eat nybble string. */
- if (size <= 0)
+ if (size <= 0U)
goto emsgsize;
dirty = 0;
- tmp = 0;
src++; /* skip x or X. */
while ((ch = *src++) != '\0' && isxdigit((unsigned char) ch))
{
tmp = (tmp << 4) | n;
if (++dirty == 2)
{
- if (size-- <= 0)
+ if (size-- <= 0U)
goto emsgsize;
*dst++ = (u_char) tmp;
dirty = 0;
}
if (dirty)
{ /* Odd trailing nybble? */
- if (size-- <= 0)
+ if (size-- <= 0U)
goto emsgsize;
*dst++ = (u_char) (tmp << 4);
}
goto enoent;
} while ((ch = *src++) != '\0' &&
isdigit((unsigned char) ch));
- if (size-- <= 0)
+ if (size-- <= 0U)
goto emsgsize;
*dst++ = (u_char) tmp;
if (ch == '\0' || ch == '/')
if (*odst >= 240) /* Class E */
bits = 32;
else if (*odst >= 224) /* Class D */
- bits = 4;
+ bits = 8;
else if (*odst >= 192) /* Class C */
bits = 24;
else if (*odst >= 128) /* Class B */
bits = 16;
else
-/* Class A */
+ /* Class A */
bits = 8;
/* If imputed mask is narrower than specified octets, widen. */
- if (bits >= 8 && bits < ((dst - odst) * 8))
+ if (bits < ((dst - odst) * 8))
bits = (dst - odst) * 8;
+
+ /*
+ * If there are no additional bits specified for a class D address
+ * adjust bits to 4.
+ */
+ if (bits == 8 && *odst == 224)
+ bits = 4;
}
/* Extend network to cover the actual mask. */
while (bits > ((dst - odst) * 8))
{
- if (size-- <= 0)
+ if (size-- <= 0U)
goto emsgsize;
*dst++ = '\0';
}
errno = EMSGSIZE;
return (-1);
}
+
+static int
+getbits(const char *src, int *bitsp)
+{
+ static const char digits[] = "0123456789";
+ int n;
+ int val;
+ char ch;
+
+ val = 0;
+ n = 0;
+ while ((ch = *src++) != '\0')
+ {
+ const char *pch;
+
+ pch = strchr(digits, ch);
+ if (pch != NULL)
+ {
+ if (n++ != 0 && val == 0) /* no leading zeros */
+ return (0);
+ val *= 10;
+ val += (pch - digits);
+ if (val > 128) /* range */
+ return (0);
+ continue;
+ }
+ return (0);
+ }
+ if (n == 0)
+ return (0);
+ *bitsp = val;
+ return (1);
+}
+
+static int
+getv4(const char *src, u_char *dst, int *bitsp)
+{
+ static const char digits[] = "0123456789";
+ u_char *odst = dst;
+ int n;
+ u_int val;
+ char ch;
+
+ val = 0;
+ n = 0;
+ while ((ch = *src++) != '\0')
+ {
+ const char *pch;
+
+ pch = strchr(digits, ch);
+ if (pch != NULL)
+ {
+ if (n++ != 0 && val == 0) /* no leading zeros */
+ return (0);
+ val *= 10;
+ val += (pch - digits);
+ if (val > 255) /* range */
+ return (0);
+ continue;
+ }
+ if (ch == '.' || ch == '/')
+ {
+ if (dst - odst > 3) /* too many octets? */
+ return (0);
+ *dst++ = val;
+ if (ch == '/')
+ return (getbits(src, bitsp));
+ val = 0;
+ n = 0;
+ continue;
+ }
+ return (0);
+ }
+ if (n == 0)
+ return (0);
+ if (dst - odst > 3) /* too many octets? */
+ 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
+inet_cidr_pton_ipv6(const char *src, u_char *dst, size_t size)
+{
+ static const char xdigits_l[] = "0123456789abcdef",
+ 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;
+
+ 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;
+ while ((ch = *src++) != '\0')
+ {
+ const char *pch;
+
+ if ((pch = strchr((xdigits = xdigits_l), ch)) == NULL)
+ pch = strchr((xdigits = xdigits_u), ch);
+ if (pch != NULL)
+ {
+ val <<= 4;
+ val |= (pch - xdigits);
+ if (++digits > 4)
+ goto enoent;
+ saw_xdigit = 1;
+ continue;
+ }
+ if (ch == ':')
+ {
+ curtok = src;
+ if (!saw_xdigit)
+ {
+ if (colonp)
+ goto enoent;
+ colonp = tp;
+ continue;
+ }
+ else if (*src == '\0')
+ goto enoent;
+ if (tp + NS_INT16SZ > endp)
+ goto enoent;
+ *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) &&
+ getv4(curtok, tp, &bits) > 0)
+ {
+ tp += NS_INADDRSZ;
+ saw_xdigit = 0;
+ break; /* '\0' was seen by inet_pton4(). */
+ }
+ if (ch == '/' && getbits(src, &bits) > 0)
+ break;
+ goto enoent;
+ }
+ if (saw_xdigit)
+ {
+ if (tp + NS_INT16SZ > endp)
+ goto enoent;
+ *tp++ = (u_char) (val >> 8) & 0xff;
+ *tp++ = (u_char) val & 0xff;
+ }
+ if (bits == -1)
+ bits = 128;
+
+ endp = tmp + 16;
+
+ if (colonp != NULL)
+ {
+ /*
+ * Since some memmove()'s erroneously fail to handle overlapping
+ * regions, we'll do the shift by hand.
+ */
+ const int n = tp - colonp;
+ int i;
+
+ if (tp == endp)
+ goto enoent;
+ for (i = 1; i <= n; i++)
+ {
+ endp[-i] = colonp[n - i];
+ colonp[n - i] = 0;
+ }
+ tp = endp;
+ }
+ if (tp != endp)
+ goto enoent;
+
+ /*
+ * Copy out the result.
+ */
+ memcpy(dst, tmp, NS_IN6ADDRSZ);
+
+ return (bits);
+
+enoent:
+ errno = ENOENT;
+ return (-1);
+
+emsgsize:
+ errno = EMSGSIZE;
+ return (-1);
+}
projects / postgresql / blobdiff