+++ /dev/null
-/*
- * PostgreSQL type definitions for the INET type. This
- * is for IP V4 CIDR notation, but prepared for V6: just
- * add the necessary bits where the comments indicate.
- *
- * $Id: inet.c,v 1.13 1998/10/22 13:50:56 momjian Exp $
- * Jon Postel RIP 16 Oct 1998
- */
-
-#include <sys/types.h>
-#include <sys/socket.h>
-
-#include <stdio.h>
-#include <string.h>
-#include <errno.h>
-
-#include <netinet/in.h>
-#include <arpa/inet.h>
-
-#include <postgres.h>
-#include <utils/palloc.h>
-#include <utils/builtins.h>
-#include <utils/inet.h>
-
-static int v4bitncmp(unsigned int a1, unsigned int a2, int bits);
-
-/*
- * Access macros. Add IPV6 support.
- */
-
-#define ip_addrsize(inetptr) \
- (((inet_struct *)VARDATA(inetptr))->family == AF_INET ? 4 : -1)
-
-#define ip_family(inetptr) \
- (((inet_struct *)VARDATA(inetptr))->family)
-
-#define ip_bits(inetptr) \
- (((inet_struct *)VARDATA(inetptr))->bits)
-
-#define ip_type(inetptr) \
- (((inet_struct *)VARDATA(inetptr))->type)
-
-#define ip_v4addr(inetptr) \
- (((inet_struct *)VARDATA(inetptr))->addr.ipv4_addr)
-
-/* Common input routine */
-static inet *
-inet_common_in(char *src, int type)
-{
- int bits;
- inet *dst;
-
- dst = palloc(VARHDRSZ + sizeof(inet_struct));
- if (dst == NULL)
- {
- elog(ERROR, "unable to allocate memory in inet_in()");
- return NULL;
- }
- /* First, try for an IP V4 address: */
- ip_family(dst) = AF_INET;
- bits = inet_net_pton(ip_family(dst), src, &ip_v4addr(dst),
- type ? ip_addrsize(dst) : -1);
- if ((bits < 0) || (bits > 32))
- {
- /* Go for an IPV6 address here, before faulting out: */
- elog(ERROR, "could not parse \"%s\"", src);
- pfree(dst);
- return NULL;
- }
- VARSIZE(dst) = VARHDRSZ
- + ((char *) &ip_v4addr(dst) - (char *) VARDATA(dst))
- + ip_addrsize(dst);
- ip_bits(dst) = bits;
- ip_type(dst) = type;
- return dst;
-}
-
-/* INET address reader. */
-inet *
-inet_in(char *src)
-{
- return inet_common_in(src, 0);
-}
-
-/* CIDR address reader. */
-inet *
-cidr_in(char *src)
-{
- return inet_common_in(src, 1);
-}
-
-/*
- * INET address output function.
- */
-
-char *
-inet_out(inet *src)
-{
- char *dst,
- tmp[sizeof("255.255.255.255/32")];
-
- if (ip_family(src) == AF_INET)
- {
- /* It's an IP V4 address: */
- if (ip_type(src))
- dst = inet_cidr_ntop(AF_INET, &ip_v4addr(src), ip_bits(src),
- tmp, sizeof(tmp));
- else
- dst = inet_net_ntop(AF_INET, &ip_v4addr(src), ip_bits(src),
- tmp, sizeof(tmp));
-
- if (dst == NULL)
- {
- elog(ERROR, "unable to print address (%s)", strerror(errno));
- return (NULL);
- }
- }
- else
- {
- /* Go for an IPV6 address here, before faulting out: */
- elog(ERROR, "unknown address family (%d)", ip_family(src));
- return NULL;
- }
- dst = palloc(strlen(tmp) + 1);
- if (dst == NULL)
- {
- elog(ERROR, "unable to allocate memory in inet_out()");
- return NULL;
- }
- strcpy(dst, tmp);
- return dst;
-}
-
-
-/* just a stub */
-char *
-cidr_out(inet *src)
-{
- return inet_out(src);
-}
-
-/*
- * Boolean tests for magnitude. Add V4/V6 testing!
- */
-
-bool
-inet_lt(inet *a1, inet *a2)
-{
- if ((ip_family(a1) == AF_INET) && (ip_family(a2) == AF_INET))
- {
- int order = v4bitncmp(ip_v4addr(a1), ip_v4addr(a2), ip_bits(a2));
-
- return ((order < 0) || ((order == 0) && (ip_bits(a1) < ip_bits(a2))));
- }
- else
- {
- /* Go for an IPV6 address here, before faulting out: */
- elog(ERROR, "cannot compare address families %d and %d",
- ip_family(a1), ip_family(a2));
- return (FALSE);
- }
-}
-
-bool
-inet_le(inet *a1, inet *a2)
-{
- return (inet_lt(a1, a2) || inet_eq(a1, a2));
-}
-
-bool
-inet_eq(inet *a1, inet *a2)
-{
- if ((ip_family(a1) == AF_INET) && (ip_family(a2) == AF_INET))
- {
- return ((ip_bits(a1) == ip_bits(a2))
- && (v4bitncmp(ip_v4addr(a1), ip_v4addr(a2), ip_bits(a1)) == 0));
- }
- else
- {
- /* Go for an IPV6 address here, before faulting out: */
- elog(ERROR, "cannot compare address families %d and %d",
- ip_family(a1), ip_family(a2));
- return (FALSE);
- }
-}
-
-bool
-inet_ge(inet *a1, inet *a2)
-{
- return (inet_gt(a1, a2) || inet_eq(a1, a2));
-}
-
-bool
-inet_gt(inet *a1, inet *a2)
-{
- if ((ip_family(a1) == AF_INET) && (ip_family(a2) == AF_INET))
- {
- int order = v4bitncmp(ip_v4addr(a1), ip_v4addr(a2), ip_bits(a2));
-
- return ((order > 0) || ((order == 0) && (ip_bits(a1) > ip_bits(a2))));
- }
- else
- {
- /* Go for an IPV6 address here, before faulting out: */
- elog(ERROR, "cannot compare address families %d and %d",
- ip_family(a1), ip_family(a2));
- return (FALSE);
- }
-}
-
-bool
-inet_ne(inet *a1, inet *a2)
-{
- return (!inet_eq(a1, a2));
-}
-
-bool
-inet_sub(inet *a1, inet *a2)
-{
- if ((ip_family(a1) == AF_INET) && (ip_family(a2) == AF_INET))
- {
- return ((ip_bits(a1) > ip_bits(a2))
- && (v4bitncmp(ip_v4addr(a1), ip_v4addr(a2), ip_bits(a2)) == 0));
- }
- else
- {
- /* Go for an IPV6 address here, before faulting out: */
- elog(ERROR, "cannot compare address families %d and %d",
- ip_family(a1), ip_family(a2));
- return (FALSE);
- }
-}
-
-bool
-inet_subeq(inet *a1, inet *a2)
-{
- if ((ip_family(a1) == AF_INET) && (ip_family(a2) == AF_INET))
- {
- return ((ip_bits(a1) >= ip_bits(a2))
- && (v4bitncmp(ip_v4addr(a1), ip_v4addr(a2), ip_bits(a2)) == 0));
- }
- else
- {
- /* Go for an IPV6 address here, before faulting out: */
- elog(ERROR, "cannot compare address families %d and %d",
- ip_family(a1), ip_family(a2));
- return (FALSE);
- }
-}
-
-bool
-inet_sup(inet *a1, inet *a2)
-{
- if ((ip_family(a1) == AF_INET) && (ip_family(a2) == AF_INET))
- {
- return ((ip_bits(a1) < ip_bits(a2))
- && (v4bitncmp(ip_v4addr(a1), ip_v4addr(a2), ip_bits(a1)) == 0));
- }
- else
- {
- /* Go for an IPV6 address here, before faulting out: */
- elog(ERROR, "cannot compare address families %d and %d",
- ip_family(a1), ip_family(a2));
- return (FALSE);
- }
-}
-
-bool
-inet_supeq(inet *a1, inet *a2)
-{
- if ((ip_family(a1) == AF_INET) && (ip_family(a2) == AF_INET))
- {
- return ((ip_bits(a1) <= ip_bits(a2))
- && (v4bitncmp(ip_v4addr(a1), ip_v4addr(a2), ip_bits(a1)) == 0));
- }
- else
- {
- /* Go for an IPV6 address here, before faulting out: */
- elog(ERROR, "cannot compare address families %d and %d",
- ip_family(a1), ip_family(a2));
- return (FALSE);
- }
-}
-
-/*
- * Comparison function for sorting. Add V4/V6 testing!
- */
-
-int4
-inet_cmp(inet *a1, inet *a2)
-{
- if (ntohl(ip_v4addr(a1)) < ntohl(ip_v4addr(a2)))
- return (-1);
- else if (ntohl(ip_v4addr(a1)) > ntohl(ip_v4addr(a2)))
- return (1);
- return 0;
-}
-
-text *
-host(inet *ip)
-{
- text *ret;
- int len;
- char *ptr,
- tmp[sizeof("255.255.255.255/32")];
-
- if (ip_type(ip))
- {
- elog(ERROR, "CIDR type has no host part");
- return NULL;
- }
-
- if (ip_family(ip) == AF_INET)
- {
- /* It's an IP V4 address: */
- if (inet_net_ntop(AF_INET, &ip_v4addr(ip), 32, tmp, sizeof(tmp)) < 0)
- {
- elog(ERROR, "unable to print host (%s)", strerror(errno));
- return (NULL);
- }
- }
- else
- {
- /* Go for an IPV6 address here, before faulting out: */
- elog(ERROR, "unknown address family (%d)", ip_family(ip));
- return (NULL);
- }
- if ((ptr = strchr(tmp, '/')) != NULL)
- *ptr = 0;
- len = VARHDRSZ + strlen(tmp) + 1;
- ret = palloc(len);
- if (ret == NULL)
- {
- elog(ERROR, "unable to allocate memory in host()");
- return (NULL);
- }
- VARSIZE(ret) = len;
- strcpy(VARDATA(ret), tmp);
- return (ret);
-}
-
-int4
-masklen(inet *ip)
-{
- return ip_bits(ip);
-}
-
-text *
-broadcast(inet *ip)
-{
- text *ret;
- int len;
- char *ptr,
- tmp[sizeof("255.255.255.255/32")] = "Hello";
-
- if (ip_family(ip) == AF_INET)
- {
- /* It's an IP V4 address: */
- int addr = htonl(ntohl(ip_v4addr(ip)) | (0xffffffff >> ip_bits(ip)));
-
- /* int addr = htonl(ip_v4addr(ip) | (0xffffffff >> ip_bits(ip))); */
-
- if (inet_net_ntop(AF_INET, &addr, 32, tmp, sizeof(tmp)) < 0)
- {
- elog(ERROR, "unable to print address (%s)", strerror(errno));
- return (NULL);
- }
- }
- else
- {
- /* Go for an IPV6 address here, before faulting out: */
- elog(ERROR, "unknown address family (%d)", ip_family(ip));
- return (NULL);
- }
- if ((ptr = strchr(tmp, '/')) != NULL)
- *ptr = 0;
- len = VARHDRSZ + strlen(tmp) + 1;
- ret = palloc(len);
- if (ret == NULL)
- {
- elog(ERROR, "unable to allocate memory in broadcast()");
- return (NULL);
- }
- VARSIZE(ret) = len;
- strcpy(VARDATA(ret), tmp);
- return (ret);
-}
-
-text *
-netmask(inet *ip)
-{
- text *ret;
- int len;
- char *ptr,
- tmp[sizeof("255.255.255.255/32")];
-
- if (ip_family(ip) == AF_INET)
- {
- /* It's an IP V4 address: */
- int addr = htonl((-1 << (32 - ip_bits(ip))) & 0xffffffff);
-
- if (inet_net_ntop(AF_INET, &addr, 32, tmp, sizeof(tmp)) < 0)
- {
- elog(ERROR, "unable to print netmask (%s)", strerror(errno));
- return (NULL);
- }
- }
- else
- {
- /* Go for an IPV6 address here, before faulting out: */
- elog(ERROR, "unknown address family (%d)", ip_family(ip));
- return (NULL);
- }
- if ((ptr = strchr(tmp, '/')) != NULL)
- *ptr = 0;
- len = VARHDRSZ + strlen(tmp) + 1;
- ret = palloc(len);
- if (ret == NULL)
- {
- elog(ERROR, "unable to allocate memory in netmask()");
- return (NULL);
- }
- VARSIZE(ret) = len;
- strcpy(VARDATA(ret), tmp);
- return (ret);
-}
-
-/*
- * Bitwise comparison for V4 addresses. Add V6 implementation!
- */
-
-static int
-v4bitncmp(unsigned int a1, unsigned int a2, int bits)
-{
- unsigned long mask = 0;
- int i;
-
- for (i = 0; i < bits; i++)
- mask = (mask >> 1) | 0x80000000;
- a1 = ntohl(a1);
- a2 = ntohl(a2);
- if ((a1 & mask) < (a2 & mask))
- return (-1);
- else if ((a1 & mask) > (a2 & mask))
- return (1);
- return (0);
-}
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