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path: root/src/backend/utils/adt/inet_net_pton.c
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Diffstat (limited to 'src/backend/utils/adt/inet_net_pton.c')
-rw-r--r--src/backend/utils/adt/inet_net_pton.c116
1 files changed, 69 insertions, 47 deletions
diff --git a/src/backend/utils/adt/inet_net_pton.c b/src/backend/utils/adt/inet_net_pton.c
index 4c7ca9d618a..b1b4bb69876 100644
--- a/src/backend/utils/adt/inet_net_pton.c
+++ b/src/backend/utils/adt/inet_net_pton.c
@@ -16,7 +16,7 @@
*/
#if defined(LIBC_SCCS) && !defined(lint)
-static const char rcsid[] = "$Id: inet_net_pton.c,v 1.15 2003/06/24 22:21:22 momjian Exp $";
+static const char rcsid[] = "$Id: inet_net_pton.c,v 1.16 2003/08/04 00:43:25 momjian Exp $";
#endif
#include "postgres.h"
@@ -35,8 +35,8 @@ static const char rcsid[] = "$Id: inet_net_pton.c,v 1.15 2003/06/24 22:21:22 mom
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 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
@@ -339,24 +339,27 @@ emsgsize:
}
static int
-getbits(const char *src, int *bitsp) {
+getbits(const char *src, int *bitsp)
+{
static const char digits[] = "0123456789";
- int n;
- int val;
- char ch;
+ int n;
+ int val;
+ char ch;
val = 0;
n = 0;
- while ((ch = *src++) != '\0') {
+ while ((ch = *src++) != '\0')
+ {
const char *pch;
pch = strchr(digits, ch);
- if (pch != NULL) {
+ if (pch != NULL)
+ {
if (n++ != 0 && val == 0) /* no leading zeros */
return (0);
val *= 10;
val += (pch - digits);
- if (val > 128) /* range */
+ if (val > 128) /* range */
return (0);
continue;
}
@@ -369,30 +372,34 @@ getbits(const char *src, int *bitsp) {
}
static int
-getv4(const char *src, u_char *dst, int *bitsp) {
+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;
+ u_char *odst = dst;
+ int n;
+ u_int val;
+ char ch;
val = 0;
n = 0;
- while ((ch = *src++) != '\0') {
+ while ((ch = *src++) != '\0')
+ {
const char *pch;
pch = strchr(digits, ch);
- if (pch != NULL) {
+ if (pch != NULL)
+ {
if (n++ != 0 && val == 0) /* no leading zeros */
return (0);
val *= 10;
val += (pch - digits);
- if (val > 255) /* range */
+ if (val > 255) /* range */
return (0);
continue;
}
- if (ch == '.' || ch == '/') {
- if (dst - odst > 3) /* too many octets? */
+ if (ch == '.' || ch == '/')
+ {
+ if (dst - odst > 3) /* too many octets? */
return (0);
*dst++ = val;
if (ch == '/')
@@ -405,7 +412,7 @@ getv4(const char *src, u_char *dst, int *bitsp) {
}
if (n == 0)
return (0);
- if (dst - odst > 3) /* too many octets? */
+ if (dst - odst > 3) /* too many octets? */
return (0);
*dst++ = val;
return (1);
@@ -422,15 +429,21 @@ inet_net_pton_ipv6(const char *src, u_char *dst)
#define NS_INADDRSZ 4
static int
-inet_cidr_pton_ipv6(const char *src, u_char *dst, size_t size) {
+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;
+ 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;
@@ -447,12 +460,14 @@ inet_cidr_pton_ipv6(const char *src, u_char *dst, size_t size) {
val = 0;
digits = 0;
bits = -1;
- while ((ch = *src++) != '\0') {
+ while ((ch = *src++) != '\0')
+ {
const char *pch;
if ((pch = strchr((xdigits = xdigits_l), ch)) == NULL)
pch = strchr((xdigits = xdigits_u), ch);
- if (pch != NULL) {
+ if (pch != NULL)
+ {
val <<= 4;
val |= (pch - xdigits);
if (++digits > 4)
@@ -460,14 +475,17 @@ inet_cidr_pton_ipv6(const char *src, u_char *dst, size_t size) {
saw_xdigit = 1;
continue;
}
- if (ch == ':') {
+ if (ch == ':')
+ {
curtok = src;
- if (!saw_xdigit) {
+ if (!saw_xdigit)
+ {
if (colonp)
goto enoent;
colonp = tp;
continue;
- } else if (*src == '\0')
+ }
+ else if (*src == '\0')
goto enoent;
if (tp + NS_INT16SZ > endp)
return (0);
@@ -479,16 +497,18 @@ inet_cidr_pton_ipv6(const char *src, u_char *dst, size_t size) {
continue;
}
if (ch == '.' && ((tp + NS_INADDRSZ) <= endp) &&
- getv4(curtok, tp, &bits) > 0) {
+ getv4(curtok, tp, &bits) > 0)
+ {
tp += NS_INADDRSZ;
saw_xdigit = 0;
- break; /* '\0' was seen by inet_pton4(). */
+ break; /* '\0' was seen by inet_pton4(). */
}
if (ch == '/' && getbits(src, &bits) > 0)
break;
goto enoent;
}
- if (saw_xdigit) {
+ if (saw_xdigit)
+ {
if (tp + NS_INT16SZ > endp)
goto enoent;
*tp++ = (u_char) (val >> 8) & 0xff;
@@ -497,20 +517,22 @@ inet_cidr_pton_ipv6(const char *src, u_char *dst, size_t size) {
if (bits == -1)
bits = 128;
- endp = tmp + 16;
+ endp = tmp + 16;
- if (colonp != NULL) {
+ if (colonp != NULL)
+ {
/*
- * Since some memmove()'s erroneously fail to handle
- * overlapping regions, we'll do the shift by hand.
+ * Since some memmove()'s erroneously fail to handle overlapping
+ * regions, we'll do the shift by hand.
*/
- const int n = tp - colonp;
- int i;
+ const int n = tp - colonp;
+ int i;
if (tp == endp)
goto enoent;
- for (i = 1; i <= n; i++) {
- endp[- i] = colonp[n - i];
+ for (i = 1; i <= n; i++)
+ {
+ endp[-i] = colonp[n - i];
colonp[n - i] = 0;
}
tp = endp;
@@ -525,11 +547,11 @@ inet_cidr_pton_ipv6(const char *src, u_char *dst, size_t size) {
return (bits);
- enoent:
+enoent:
errno = ENOENT;
return (-1);
- emsgsize:
+emsgsize:
errno = EMSGSIZE;
return (-1);
}
generated by cgit v1.2.3 (git 2.25.1) at 2025-05-19 23:48:44 +0000