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ip6r.c
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ip6r.c
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/* $Id$ */
#include "ipr.h"
#include "ip6r_funcs.h"
/* extract an IP range from text.
*/
static
bool ip6r_from_str(char *str, IP6R *ipr)
{
char buf[IP6_STRING_MAX];
int pos = strcspn(str, "-/");
IP6 ip;
switch (str[pos])
{
case 0: /* no separator, must be single ip6 addr */
{
if (!ip6_raw_input(str, ip.bits))
return FALSE;
ipr->lower = ip;
ipr->upper = ip;
return TRUE;
}
case '-': /* lower-upper */
{
char *rest = str + pos + 1;
if (pos > sizeof(buf)-2)
return FALSE;
memcpy(buf, str, pos);
buf[pos] = 0;
if (!ip6_raw_input(buf, ip.bits))
return FALSE;
ipr->lower = ip;
if (!ip6_raw_input(rest, ip.bits))
return FALSE;
if (!ip6_lessthan(&ip, &ipr->lower))
ipr->upper = ip;
else
{
ipr->upper = ipr->lower;
ipr->lower = ip;
}
return TRUE;
}
case '/': /* prefix/len */
{
char *rest = str + pos + 1;
unsigned pfxlen;
char dummy;
if (pos > sizeof(buf)-2)
return FALSE;
memcpy(buf, str, pos);
buf[pos] = 0;
if (!ip6_raw_input(buf, ip.bits))
return FALSE;
if (rest[strspn(rest,"0123456789")])
return FALSE;
if (sscanf(rest, "%u%c", &pfxlen, &dummy) != 1)
return FALSE;
return ip6r_from_cidr(&ip, pfxlen, ipr);
}
default:
return FALSE; /* can't happen */
}
}
/* Output an ip range in text form
*/
static
int ip6r_to_str(IP6R *ipr, char *str, int slen)
{
char buf1[IP6_STRING_MAX];
char buf2[IP6_STRING_MAX];
unsigned msk;
if (ip6_equal(&ipr->lower, &ipr->upper))
return ip6_raw_output(ipr->lower.bits, str, slen);
if ((msk = masklen6(&ipr->lower,&ipr->upper)) <= 128)
{
ip6_raw_output(ipr->lower.bits, buf1, sizeof(buf1));
return snprintf(str, slen, "%s/%u", buf1, msk);
}
ip6_raw_output(ipr->lower.bits, buf1, sizeof(buf1));
ip6_raw_output(ipr->upper.bits, buf2, sizeof(buf2));
return snprintf(str, slen, "%s-%s", buf1, buf2);
}
/**************************************************************************/
/* This part handles all aspects of postgres interfacing.
*/
/* end of version dependencies */
/*
#define GIST_DEBUG
#define GIST_QUERY_DEBUG
*/
static
text *
make_text(char *str, int len)
{
text *ret = (text *) palloc(len + VARHDRSZ);
SET_VARSIZE(ret, len + VARHDRSZ);
if (str)
memcpy(VARDATA(ret), str, len);
else
memset(VARDATA(ret), 0, len);
return ret;
}
static inline
void
set_text_len(text *txt, int len)
{
if ((len + VARHDRSZ) < VARSIZE(txt))
SET_VARSIZE(txt, len + VARHDRSZ);
}
static inline
int
get_text_len(text *txt)
{
return VARSIZE(txt) - VARHDRSZ;
}
/*
** Input/Output routines
*/
PG_FUNCTION_INFO_V1(ip6_in);
Datum
ip6_in(PG_FUNCTION_ARGS)
{
char *str = PG_GETARG_CSTRING(0);
IP6 *ip = palloc(sizeof(IP6));
if (ip6_raw_input(str, ip->bits))
PG_RETURN_IP6_P(ip);
ereport(ERROR,
(errcode(ERRCODE_INVALID_PARAMETER_VALUE),
errmsg("invalid IP6 value: '%s'", str)));
PG_RETURN_NULL();
}
PG_FUNCTION_INFO_V1(ip6_out);
Datum
ip6_out(PG_FUNCTION_ARGS)
{
IP6 *ip = PG_GETARG_IP6_P(0);
char *out = palloc(IP6_STRING_MAX);
ip6_raw_output(ip->bits, out, IP6_STRING_MAX);
PG_RETURN_CSTRING(out);
}
PG_FUNCTION_INFO_V1(ip6_recv);
Datum
ip6_recv(PG_FUNCTION_ARGS)
{
StringInfo buf = (StringInfo) PG_GETARG_POINTER(0);
IP6 *ip = palloc(sizeof(IP6));
ip->bits[0] = pq_getmsgint64(buf);
ip->bits[1] = pq_getmsgint64(buf);
PG_RETURN_IP6_P(ip);
}
PG_FUNCTION_INFO_V1(ip6_send);
Datum
ip6_send(PG_FUNCTION_ARGS)
{
IP6 *arg1 = PG_GETARG_IP6_P(0);
StringInfoData buf;
pq_begintypsend(&buf);
pq_sendint64(&buf, arg1->bits[0]);
pq_sendint64(&buf, arg1->bits[1]);
PG_RETURN_BYTEA_P(pq_endtypsend(&buf));
}
PG_FUNCTION_INFO_V1(ip6hash);
Datum
ip6hash(PG_FUNCTION_ARGS)
{
IP6 *arg1 = PG_GETARG_IP6_P(0);
return hash_any((unsigned char *)arg1, sizeof(IP6));
}
PG_FUNCTION_INFO_V1(ip6_cast_to_text);
Datum
ip6_cast_to_text(PG_FUNCTION_ARGS)
{
IP6 *ip = PG_GETARG_IP6_P(0);
text *out = make_text(NULL,IP6_STRING_MAX);
set_text_len(out, ip6_raw_output(ip->bits, VARDATA(out), IP6_STRING_MAX));
PG_RETURN_TEXT_P(out);
}
PG_FUNCTION_INFO_V1(ip6_cast_from_text);
Datum
ip6_cast_from_text(PG_FUNCTION_ARGS)
{
text *txt = PG_GETARG_TEXT_P(0);
int tlen = get_text_len(txt);
char buf[IP6_STRING_MAX];
if (tlen < sizeof(buf))
{
IP6 *ip = palloc(sizeof(IP6));
memcpy(buf, VARDATA(txt), tlen);
buf[tlen] = 0;
if (ip6_raw_input(buf, ip->bits))
PG_RETURN_IP6_P(ip);
}
ereport(ERROR,
(errcode(ERRCODE_INVALID_PARAMETER_VALUE),
errmsg("invalid IP6 value in text")));
PG_RETURN_NULL();
}
PG_FUNCTION_INFO_V1(ip6_cast_from_inet);
Datum
ip6_cast_from_inet(PG_FUNCTION_ARGS)
{
inet *inetptr = PG_GETARG_INET_P(0);
inet_struct *in = INET_STRUCT_DATA(inetptr);
if (in->family == PGSQL_AF_INET6)
{
unsigned char *p = in->ipaddr;
IP6 *ip = palloc(sizeof(IP6));
ip->bits[0] = (((uint64)p[0] << 56)
| ((uint64)p[1] << 48)
| ((uint64)p[2] << 40)
| ((uint64)p[3] << 32)
| ((uint64)p[4] << 24)
| ((uint64)p[5] << 16)
| ((uint64)p[6] << 8)
| p[7]);
ip->bits[1] = (((uint64)p[8] << 56)
| ((uint64)p[9] << 48)
| ((uint64)p[10] << 40)
| ((uint64)p[11] << 32)
| ((uint64)p[12] << 24)
| ((uint64)p[13] << 16)
| ((uint64)p[14] << 8)
| p[15]);
PG_RETURN_IP6_P(ip);
}
ereport(ERROR,
(errcode(ERRCODE_INVALID_PARAMETER_VALUE),
errmsg("invalid INET value for conversion to IP6")));
PG_RETURN_NULL();
}
PG_FUNCTION_INFO_V1(ip6_cast_to_cidr);
Datum
ip6_cast_to_cidr(PG_FUNCTION_ARGS)
{
IP6 *ip = PG_GETARG_IP6_P(0);
inet *res = palloc0(VARHDRSZ + sizeof(inet_struct));
inet_struct *in;
SET_VARSIZE(res, VARHDRSZ + offsetof(inet_struct, ipaddr) + 16);
in = ((inet_struct *)VARDATA(res));
INET_INIT_CIDR(in);
in->bits = 128;
in->family = PGSQL_AF_INET6;
{
unsigned char *p = in->ipaddr;
p[0] = (ip->bits[0] >> 56);
p[1] = (ip->bits[0] >> 48);
p[2] = (ip->bits[0] >> 40);
p[3] = (ip->bits[0] >> 32);
p[4] = (ip->bits[0] >> 24);
p[5] = (ip->bits[0] >> 16);
p[6] = (ip->bits[0] >> 8);
p[7] = (ip->bits[0]);
p[8] = (ip->bits[1] >> 56);
p[9] = (ip->bits[1] >> 48);
p[10] = (ip->bits[1] >> 40);
p[11] = (ip->bits[1] >> 32);
p[12] = (ip->bits[1] >> 24);
p[13] = (ip->bits[1] >> 16);
p[14] = (ip->bits[1] >> 8);
p[15] = (ip->bits[1]);
}
PG_RETURN_INET_P(res);
}
PG_FUNCTION_INFO_V1(ip6_cast_to_numeric);
Datum
ip6_cast_to_numeric(PG_FUNCTION_ARGS)
{
IP6 *ip = PG_GETARG_IP6_P(0);
Datum res,tmp,mul;
static int64 mul_val = ((int64)1 << 56);
int64 tmp_val;
mul = DirectFunctionCall1(int8_numeric,Int64GetDatumFast(mul_val));
tmp_val = (ip->bits[0] >> 48);
res = DirectFunctionCall1(int8_numeric,Int64GetDatumFast(tmp_val));
tmp_val = ((ip->bits[0] & (uint64)(0xFFFFFFFFFFFFULL)) << 8) | (ip->bits[1] >> 56);
tmp = DirectFunctionCall1(int8_numeric,Int64GetDatumFast(tmp_val));
res = DirectFunctionCall2(numeric_mul,res,mul);
res = DirectFunctionCall2(numeric_add,res,tmp);
tmp_val = (ip->bits[1] & (uint64)(0xFFFFFFFFFFFFFFULL));
tmp = DirectFunctionCall1(int8_numeric,Int64GetDatumFast(tmp_val));
res = DirectFunctionCall2(numeric_mul,res,mul);
res = DirectFunctionCall2(numeric_add,res,tmp);
PG_RETURN_DATUM(res);
}
PG_FUNCTION_INFO_V1(ip6_cast_from_numeric);
Datum
ip6_cast_from_numeric(PG_FUNCTION_ARGS)
{
Datum val = NumericGetDatum(PG_GETARG_NUMERIC(0));
Datum rem,tmp,div,mul;
static int64 mul_val = ((int64)1 << 56);
uint64 tmp_val;
IP6 *res;
tmp = DirectFunctionCall1(numeric_floor,DirectFunctionCall1(numeric_abs,val));
if (!DatumGetBool(DirectFunctionCall2(numeric_eq,tmp,val)))
{
ereport(ERROR,
(errcode(ERRCODE_INVALID_PARAMETER_VALUE),
errmsg("invalid numeric value for conversion to IP6")));
}
res = palloc(sizeof(IP6));
/* we use div/mul here rather than mod because numeric_mod is implemented as
* a div/mul/subtract in any case, so we save a division step by doing the
* mul/subtract ourselves
*/
mul = DirectFunctionCall1(int8_numeric,Int64GetDatumFast(mul_val));
div = DirectFunctionCall2(numeric_div_trunc,val,mul);
tmp = DirectFunctionCall2(numeric_mul,div,mul);
rem = DirectFunctionCall2(numeric_sub,val,tmp);
res->bits[1] = (uint64)DatumGetInt64(DirectFunctionCall1(numeric_int8,rem));
val = div;
div = DirectFunctionCall2(numeric_div_trunc,val,mul);
tmp = DirectFunctionCall2(numeric_mul,div,mul);
rem = DirectFunctionCall2(numeric_sub,val,tmp);
tmp_val = (uint64)DatumGetInt64(DirectFunctionCall1(numeric_int8,rem));
res->bits[1] |= ((tmp_val & 0xFF) << 56);
res->bits[0] = (tmp_val >> 8);
if (!DatumGetBool(DirectFunctionCall2(numeric_gt,div,mul)))
{
tmp_val = (uint64)DatumGetInt64(DirectFunctionCall1(numeric_int8,div));
if (tmp_val <= (uint64)0xFFFFU)
{
res->bits[0] |= (tmp_val << 48);
PG_RETURN_IP6_P(res);
}
}
ereport(ERROR,
(errcode(ERRCODE_NUMERIC_VALUE_OUT_OF_RANGE),
errmsg("numeric value too large for conversion to IP6")));
PG_RETURN_NULL();
}
PG_FUNCTION_INFO_V1(ip6_netmask);
Datum
ip6_netmask(PG_FUNCTION_ARGS)
{
int pfxlen = PG_GETARG_INT32(0);
IP6 *mask;
if (pfxlen < 0 || pfxlen > 128)
{
ereport(ERROR,
(errcode(ERRCODE_INVALID_PARAMETER_VALUE),
errmsg("prefix length out of range")));
}
mask = palloc(sizeof(IP6));
mask->bits[0] = netmask6_hi(pfxlen);
mask->bits[1] = netmask6_lo(pfxlen);
PG_RETURN_IP6_P(mask);
}
PG_FUNCTION_INFO_V1(ip6_net_lower);
Datum
ip6_net_lower(PG_FUNCTION_ARGS)
{
IP6 *ip = PG_GETARG_IP6_P(0);
int pfxlen = PG_GETARG_INT32(1);
IP6 *res;
if (pfxlen < 0 || pfxlen > 128)
{
ereport(ERROR,
(errcode(ERRCODE_INVALID_PARAMETER_VALUE),
errmsg("prefix length out of range")));
}
res = palloc(sizeof(IP6));
res->bits[0] = ip->bits[0] & netmask6_hi(pfxlen);
res->bits[1] = ip->bits[1] & netmask6_lo(pfxlen);
PG_RETURN_IP6_P(res);
}
PG_FUNCTION_INFO_V1(ip6_net_upper);
Datum
ip6_net_upper(PG_FUNCTION_ARGS)
{
IP6 *ip = PG_GETARG_IP6_P(0);
int pfxlen = PG_GETARG_INT32(1);
IP6 *res;
if (pfxlen < 0 || pfxlen > 128)
{
ereport(ERROR,
(errcode(ERRCODE_INVALID_PARAMETER_VALUE),
errmsg("prefix length out of range")));
}
res = palloc(sizeof(IP6));
res->bits[0] = ip->bits[0] | hostmask6_hi(pfxlen);
res->bits[1] = ip->bits[1] | hostmask6_lo(pfxlen);
PG_RETURN_IP6_P(res);
}
PG_FUNCTION_INFO_V1(ip6_plus_int);
Datum
ip6_plus_int(PG_FUNCTION_ARGS)
{
IP6 *ip = PG_GETARG_IP6_P(0);
int addend = PG_GETARG_INT32(1);
IP6 *result = palloc(sizeof(IP6));
if (addend >= 0)
{
result->bits[1] = ip->bits[1] + addend;
result->bits[0] = ip->bits[0] + (result->bits[1] < ip->bits[1]);
}
else
{
result->bits[1] = ip->bits[1] - (uint64)(-addend);
result->bits[0] = ip->bits[0] - (result->bits[1] > ip->bits[1]);
}
if ((addend < 0) != ip6_lessthan(result,ip))
{
ereport(ERROR,
(errcode(ERRCODE_NUMERIC_VALUE_OUT_OF_RANGE),
errmsg("ip address out of range")));
}
PG_RETURN_IP6_P(result);
}
PG_FUNCTION_INFO_V1(ip6_plus_bigint);
Datum
ip6_plus_bigint(PG_FUNCTION_ARGS)
{
IP6 *ip = PG_GETARG_IP6_P(0);
int64 addend = PG_GETARG_INT64(1);
IP6 *result = palloc(sizeof(IP6));
if (addend >= 0)
{
result->bits[1] = ip->bits[1] + addend;
result->bits[0] = ip->bits[0] + (result->bits[1] < ip->bits[1]);
}
else
{
result->bits[1] = ip->bits[1] - (uint64)(-addend);
result->bits[0] = ip->bits[0] - (result->bits[1] > ip->bits[1]);
}
if ((addend < 0) != ip6_lessthan(result,ip))
{
ereport(ERROR,
(errcode(ERRCODE_NUMERIC_VALUE_OUT_OF_RANGE),
errmsg("ip address out of range")));
}
PG_RETURN_IP6_P(result);
}
PG_FUNCTION_INFO_V1(ip6_plus_numeric);
Datum
ip6_plus_numeric(PG_FUNCTION_ARGS)
{
IP6 *ip = PG_GETARG_IP6_P(0);
Datum addend_num = NumericGetDatum(PG_GETARG_NUMERIC(1));
Datum addend_abs;
IP6 *addend;
IP6 *result = palloc(sizeof(IP6));
bool is_negative;
addend_abs = DirectFunctionCall1(numeric_abs,addend_num);
addend = DatumGetIP6P(DirectFunctionCall1(ip6_cast_from_numeric,addend_abs));
if (DatumGetBool(DirectFunctionCall2(numeric_eq,addend_num,addend_abs)))
{
is_negative = false;
result->bits[1] = ip->bits[1] + addend->bits[1];
result->bits[0] = ip->bits[0] + addend->bits[0] + (result->bits[1] < ip->bits[1]);
}
else
{
is_negative = true;
result->bits[1] = ip->bits[1] - addend->bits[1];
result->bits[0] = ip->bits[0] - addend->bits[0] - (result->bits[1] > ip->bits[1]);
}
if (is_negative != ip6_lessthan(result,ip))
{
ereport(ERROR,
(errcode(ERRCODE_NUMERIC_VALUE_OUT_OF_RANGE),
errmsg("ip address out of range")));
}
PG_RETURN_IP6_P(result);
}
PG_FUNCTION_INFO_V1(ip6_minus_int);
Datum
ip6_minus_int(PG_FUNCTION_ARGS)
{
IP6 *ip = PG_GETARG_IP6_P(0);
int subtrahend = PG_GETARG_INT32(1);
IP6 *result = palloc(sizeof(IP6));
ip6_sub_int(ip, subtrahend, result);
if ((subtrahend > 0) != ip6_lessthan(result,ip))
{
ereport(ERROR,
(errcode(ERRCODE_NUMERIC_VALUE_OUT_OF_RANGE),
errmsg("ip address out of range")));
}
PG_RETURN_IP6_P(result);
}
PG_FUNCTION_INFO_V1(ip6_minus_bigint);
Datum
ip6_minus_bigint(PG_FUNCTION_ARGS)
{
IP6 *ip = PG_GETARG_IP6_P(0);
int64 subtrahend = PG_GETARG_INT64(1);
IP6 *result = palloc(sizeof(IP6));
if (subtrahend >= 0)
{
result->bits[1] = ip->bits[1] - (uint64)subtrahend;
result->bits[0] = ip->bits[0] - (result->bits[1] > ip->bits[1]);
}
else
{
result->bits[1] = ip->bits[1] + (uint64)(-subtrahend);
result->bits[0] = ip->bits[0] + (result->bits[1] < ip->bits[1]);
}
if ((subtrahend > 0) != ip6_lessthan(result,ip))
{
ereport(ERROR,
(errcode(ERRCODE_NUMERIC_VALUE_OUT_OF_RANGE),
errmsg("ip address out of range")));
}
PG_RETURN_IP6_P(result);
}
PG_FUNCTION_INFO_V1(ip6_minus_numeric);
Datum
ip6_minus_numeric(PG_FUNCTION_ARGS)
{
Datum ip = PG_GETARG_DATUM(0);
Datum subtrahend = PG_GETARG_DATUM(1);
subtrahend = DirectFunctionCall1(numeric_uminus,subtrahend);
return DirectFunctionCall2(ip6_plus_numeric,ip,subtrahend);
}
PG_FUNCTION_INFO_V1(ip6_minus_ip6);
Datum
ip6_minus_ip6(PG_FUNCTION_ARGS)
{
Datum minuend = PG_GETARG_DATUM(0);
Datum subtrahend = PG_GETARG_DATUM(1);
Datum res;
res = DirectFunctionCall2(numeric_sub,
DirectFunctionCall1(ip6_cast_to_numeric,minuend),
DirectFunctionCall1(ip6_cast_to_numeric,subtrahend));
PG_RETURN_DATUM(res);
}
PG_FUNCTION_INFO_V1(ip6_and);
Datum
ip6_and(PG_FUNCTION_ARGS)
{
IP6 *a = PG_GETARG_IP6_P(0);
IP6 *b = PG_GETARG_IP6_P(1);
IP6 *res = palloc(sizeof(IP6));
res->bits[0] = a->bits[0] & b->bits[0];
res->bits[1] = a->bits[1] & b->bits[1];
PG_RETURN_IP6_P(res);
}
PG_FUNCTION_INFO_V1(ip6_or);
Datum
ip6_or(PG_FUNCTION_ARGS)
{
IP6 *a = PG_GETARG_IP6_P(0);
IP6 *b = PG_GETARG_IP6_P(1);
IP6 *res = palloc(sizeof(IP6));
res->bits[0] = a->bits[0] | b->bits[0];
res->bits[1] = a->bits[1] | b->bits[1];
PG_RETURN_IP6_P(res);
}
PG_FUNCTION_INFO_V1(ip6_xor);
Datum
ip6_xor(PG_FUNCTION_ARGS)
{
IP6 *a = PG_GETARG_IP6_P(0);
IP6 *b = PG_GETARG_IP6_P(1);
IP6 *res = palloc(sizeof(IP6));
res->bits[0] = a->bits[0] ^ b->bits[0];
res->bits[1] = a->bits[1] ^ b->bits[1];
PG_RETURN_IP6_P(res);
}
PG_FUNCTION_INFO_V1(ip6_not);
Datum
ip6_not(PG_FUNCTION_ARGS)
{
IP6 *a = PG_GETARG_IP6_P(0);
IP6 *res = palloc(sizeof(IP6));
res->bits[0] = ~a->bits[0];
res->bits[1] = ~a->bits[1];
PG_RETURN_IP6_P(res);
}
/*---- ip6r ----*/
PG_FUNCTION_INFO_V1(ip6r_in);
Datum
ip6r_in(PG_FUNCTION_ARGS)
{
char *str = PG_GETARG_CSTRING(0);
IP6R ipr;
if (ip6r_from_str(str, &ipr))
{
IP6R *res = palloc(sizeof(IP6R));
*res = ipr;
PG_RETURN_IP6R_P(res);
}
ereport(ERROR,
(errcode(ERRCODE_INVALID_PARAMETER_VALUE),
errmsg("invalid IP6R value: \"%s\"", str)));
PG_RETURN_NULL();
}
PG_FUNCTION_INFO_V1(ip6r_out);
Datum
ip6r_out(PG_FUNCTION_ARGS)
{
IP6R *ipr = PG_GETARG_IP6R_P(0);
char *out = palloc(IP6R_STRING_MAX);
ip6r_to_str(ipr, out, IP6R_STRING_MAX);
PG_RETURN_CSTRING(out);
}
PG_FUNCTION_INFO_V1(ip6r_recv);
Datum
ip6r_recv(PG_FUNCTION_ARGS)
{
StringInfo buf = (StringInfo) PG_GETARG_POINTER(0);
IP6R *ipr = palloc(sizeof(IP6R));
ipr->lower.bits[0] = pq_getmsgint64(buf);
ipr->lower.bits[1] = pq_getmsgint64(buf);
ipr->upper.bits[0] = pq_getmsgint64(buf);
ipr->upper.bits[1] = pq_getmsgint64(buf);
PG_RETURN_IP6R_P(ipr);
}
PG_FUNCTION_INFO_V1(ip6r_send);
Datum
ip6r_send(PG_FUNCTION_ARGS)
{
IP6R *ipr = PG_GETARG_IP6R_P(0);
StringInfoData buf;
pq_begintypsend(&buf);
pq_sendint64(&buf, ipr->lower.bits[0]);
pq_sendint64(&buf, ipr->lower.bits[1]);
pq_sendint64(&buf, ipr->upper.bits[0]);
pq_sendint64(&buf, ipr->upper.bits[1]);
PG_RETURN_BYTEA_P(pq_endtypsend(&buf));
}
PG_FUNCTION_INFO_V1(ip6rhash);
Datum
ip6rhash(PG_FUNCTION_ARGS)
{
IP6R *arg1 = PG_GETARG_IP6R_P(0);
return hash_any((unsigned char *)arg1, sizeof(IP6R));
}
PG_FUNCTION_INFO_V1(ip6r_cast_to_text);
Datum
ip6r_cast_to_text(PG_FUNCTION_ARGS)
{
IP6R *ipr = PG_GETARG_IP6R_P(0);
text *out = make_text(NULL,IP6R_STRING_MAX);
set_text_len(out, ip6r_to_str(ipr, VARDATA(out), IP6R_STRING_MAX));
PG_RETURN_TEXT_P(out);
}
PG_FUNCTION_INFO_V1(ip6r_cast_from_text);
Datum
ip6r_cast_from_text(PG_FUNCTION_ARGS)
{
text *txt = PG_GETARG_TEXT_P(0);
int tlen = get_text_len(txt);
char buf[IP6R_STRING_MAX];
if (tlen < sizeof(buf))
{
IP6R ipr;
memcpy(buf, VARDATA(txt), tlen);
buf[tlen] = 0;
if (ip6r_from_str(buf, &ipr))
{
IP6R *res = palloc(sizeof(IP6R));
*res = ipr;
PG_RETURN_IP6R_P(res);
}
}
ereport(ERROR,
(errcode(ERRCODE_INVALID_PARAMETER_VALUE),
errmsg("invalid IP6R value in text")));
PG_RETURN_NULL();
}
PG_FUNCTION_INFO_V1(ip6r_cast_from_cidr);
Datum
ip6r_cast_from_cidr(PG_FUNCTION_ARGS)
{
inet *inetptr = PG_GETARG_INET_P(0);
inet_struct *in = INET_STRUCT_DATA(inetptr);
if (INET_IS_CIDR(in) && in->family == PGSQL_AF_INET6)
{
unsigned char *p = in->ipaddr;
IP6 ip;
IP6R ipr;
ip.bits[0] = (((uint64)p[0] << 56)
| ((uint64)p[1] << 48)
| ((uint64)p[2] << 40)
| ((uint64)p[3] << 32)
| ((uint64)p[4] << 24)
| ((uint64)p[5] << 16)
| ((uint64)p[6] << 8)
| p[7]);
ip.bits[1] = (((uint64)p[8] << 56)
| ((uint64)p[9] << 48)
| ((uint64)p[10] << 40)
| ((uint64)p[11] << 32)
| ((uint64)p[12] << 24)
| ((uint64)p[13] << 16)
| ((uint64)p[14] << 8)
| p[15]);
if (ip6r_from_cidr(&ip, in->bits, &ipr))
{
IP6R *res = palloc(sizeof(IP6R));
*res = ipr;
PG_RETURN_IP6R_P(res);
}
}
ereport(ERROR,
(errcode(ERRCODE_INVALID_PARAMETER_VALUE),
errmsg("invalid CIDR value for conversion to IP6R")));
PG_RETURN_NULL();
}
PG_FUNCTION_INFO_V1(ip6r_cast_to_cidr);
Datum
ip6r_cast_to_cidr(PG_FUNCTION_ARGS)
{
IP6R *ipr = PG_GETARG_IP6R_P(0);
IP6 *ip = &ipr->lower;
inet *res;
inet_struct *in;
unsigned bits = masklen6(ip, &ipr->upper);
if (bits > 128)
PG_RETURN_NULL();
res = palloc0(VARHDRSZ + sizeof(inet_struct));
SET_VARSIZE(res, VARHDRSZ + offsetof(inet_struct, ipaddr) + 16);
in = ((inet_struct *)VARDATA(res));
INET_INIT_CIDR(in);
in->bits = bits;
in->family = PGSQL_AF_INET6;
{
unsigned char *p = in->ipaddr;
p[0] = (ip->bits[0] >> 56);
p[1] = (ip->bits[0] >> 48);
p[2] = (ip->bits[0] >> 40);
p[3] = (ip->bits[0] >> 32);
p[4] = (ip->bits[0] >> 24);
p[5] = (ip->bits[0] >> 16);
p[6] = (ip->bits[0] >> 8);
p[7] = (ip->bits[0]);
p[8] = (ip->bits[1] >> 56);
p[9] = (ip->bits[1] >> 48);
p[10] = (ip->bits[1] >> 40);
p[11] = (ip->bits[1] >> 32);
p[12] = (ip->bits[1] >> 24);
p[13] = (ip->bits[1] >> 16);
p[14] = (ip->bits[1] >> 8);
p[15] = (ip->bits[1]);
}
PG_RETURN_INET_P(res);
}
PG_FUNCTION_INFO_V1(ip6r_cast_from_ip6);
Datum
ip6r_cast_from_ip6(PG_FUNCTION_ARGS)
{
IP6 *ip = PG_GETARG_IP6_P(0);
IP6R *res = palloc(sizeof(IP6R));
if (ip6r_from_inet(ip, 128, res))
{
PG_RETURN_IP6R_P(res);
}
pfree(res);
ereport(ERROR,
(errcode(ERRCODE_INVALID_PARAMETER_VALUE),
errmsg("invalid IP6 value for conversion to IP6R (shouldn't be possible)")));
PG_RETURN_NULL();
}
PG_FUNCTION_INFO_V1(ip6r_from_ip6s);
Datum
ip6r_from_ip6s(PG_FUNCTION_ARGS)
{
IP6 *a = PG_GETARG_IP6_P(0);
IP6 *b = PG_GETARG_IP6_P(1);
IP6R *res = palloc(sizeof(IP6R));
if (ip6_lessthan(a,b))
res->lower = *a, res->upper = *b;
else
res->lower = *b, res->upper = *a;
PG_RETURN_IP6R_P(res);
}
PG_FUNCTION_INFO_V1(ip6r_net_prefix);
Datum
ip6r_net_prefix(PG_FUNCTION_ARGS)
{
IP6 *ip = PG_GETARG_IP6_P(0);
int pfxlen = PG_GETARG_INT32(1);
if (pfxlen < 0 || pfxlen > 128)
{
ereport(ERROR,
(errcode(ERRCODE_INVALID_PARAMETER_VALUE),
errmsg("prefix length out of range")));
}
{
IP6R *res = palloc(sizeof(IP6R));
ip6r_from_inet(ip, (unsigned)pfxlen, res);
PG_RETURN_IP6R_P(res);
}
}
PG_FUNCTION_INFO_V1(ip6r_net_mask);
Datum
ip6r_net_mask(PG_FUNCTION_ARGS)
{
IP6 *ip = PG_GETARG_IP6_P(0);
IP6 *mask = PG_GETARG_IP6_P(1);
if (!ip6_valid_netmask(mask->bits[0], mask->bits[1]))
{
ereport(ERROR,
(errcode(ERRCODE_INVALID_PARAMETER_VALUE),
errmsg("invalid netmask")));
}
{
IP6R *res = palloc(sizeof(IP6R));
res->lower.bits[0] = ip->bits[0] & mask->bits[0];
res->lower.bits[1] = ip->bits[1] & mask->bits[1];
res->upper.bits[0] = ip->bits[0] | ~(mask->bits[0]);
res->upper.bits[1] = ip->bits[1] | ~(mask->bits[1]);
PG_RETURN_IP6R_P(res);
}
}
PG_FUNCTION_INFO_V1(ip6r_lower);
Datum
ip6r_lower(PG_FUNCTION_ARGS)
{
IP6R *ipr = PG_GETARG_IP6R_P(0);
IP6 *res = palloc(sizeof(IP6));
*res = ipr->lower;
PG_RETURN_IP6_P(res);
}
PG_FUNCTION_INFO_V1(ip6r_upper);
Datum
ip6r_upper(PG_FUNCTION_ARGS)
{
IP6R *ipr = PG_GETARG_IP6R_P(0);
IP6 *res = palloc(sizeof(IP6));
*res = ipr->upper;
PG_RETURN_IP6_P(res);
}
PG_FUNCTION_INFO_V1(ip6r_is_cidr);
Datum
ip6r_is_cidr(PG_FUNCTION_ARGS)
{
IP6R *ipr = PG_GETARG_IP6R_P(0);
PG_RETURN_BOOL( (masklen6(&ipr->lower,&ipr->upper) <= 128U) );
}
PG_FUNCTION_INFO_V1(ip6_lt);
Datum
ip6_lt(PG_FUNCTION_ARGS)
{
PG_RETURN_BOOL( ip6_lessthan(PG_GETARG_IP6_P(0), PG_GETARG_IP6_P(1)) );
}
PG_FUNCTION_INFO_V1(ip6_le);
Datum
ip6_le(PG_FUNCTION_ARGS)
{
PG_RETURN_BOOL( ip6_less_eq(PG_GETARG_IP6_P(0), PG_GETARG_IP6_P(1)) );
}
PG_FUNCTION_INFO_V1(ip6_gt);
Datum