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1798. [func] The server syntax has been extended to support a

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range of servers.  [RT #11132]
This commit is contained in:
Mark Andrews
2005-01-17 00:46:05 +00:00
parent 5752b9e296
commit 4844ed026a
12 changed files with 159 additions and 37 deletions
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38
lib/isc/netaddr.c
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@@ -15,7 +15,7 @@
* PERFORMANCE OF THIS SOFTWARE.
*/
/* $Id: netaddr.c,v 1.28 2004/05/15 03:37:33 jinmei Exp $ */
/* $Id: netaddr.c,v 1.29 2005/01/17 00:46:04 marka Exp $ */
#include <config.h>
@@ -190,6 +190,42 @@ isc_netaddr_format(const isc_netaddr_t *na, char *array, unsigned int size) {
}
}
isc_result_t
isc_netaddr_prefixok(const isc_netaddr_t *na, unsigned int prefixlen) {
static const unsigned char zeros[16];
unsigned int nbits, nbytes, ipbytes, i;
const unsigned char *p;
switch (na->family) {
case AF_INET:
p = (const unsigned char *) &na->type.in;
ipbytes = 4;
if (prefixlen > 32)
return (ISC_R_RANGE);
break;
case AF_INET6:
p = (const unsigned char *) &na->type.in6;
ipbytes = 16;
if (prefixlen > 128)
return (ISC_R_RANGE);
break;
default:
ipbytes = 0;
return (ISC_R_NOTIMPLEMENTED);
}
nbytes = prefixlen / 8;
nbits = prefixlen % 8;
if (nbits != 0) {
if ((p[nbytes] & (0xff>>nbits)) != 0U)
return (ISC_R_FAILURE);
nbytes++;
}
if (memcmp(p + nbytes, zeros, ipbytes - nbytes) != 0)
return (ISC_R_FAILURE);
return (ISC_R_SUCCESS);
}
isc_result_t
isc_netaddr_masktoprefixlen(const isc_netaddr_t *s, unsigned int *lenp) {
unsigned int nbits, nbytes, ipbytes, i;