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Code Issues Releases Wiki Activity

Add cache_found_zone() function.

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Ted Lemon
2000-10-12 08:58:11 +00:00
parent f07d12c622
commit b2b468ef84
1 changed files with 65 additions and 1 deletions
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66
common/dns.c
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@@ -42,7 +42,7 @@
#ifndef lint
static char copyright[] =
"$Id: dns.c,v 1.28 2000/09/14 11:29:43 mellon Exp $ Copyright (c) 2000 The Internet Software Consortium. All rights reserved.\n";
"$Id: dns.c,v 1.29 2000/10/12 08:58:11 mellon Exp $ Copyright (c) 2000 The Internet Software Consortium. All rights reserved.\n";
#endif /* not lint */
#include "dhcpd.h"
@@ -396,6 +396,70 @@ void repudiate_zone (struct dns_zone **zone)
(*zone) -> timeout = cur_time - 1;
dns_zone_dereference (zone, MDL);
}
void cache_found_zone (ns_class class,
char *zname, struct in_addr *addrs, int naddrs)
{
isc_result_t status = ISC_R_NOTFOUND;
const char *np;
struct dns_zone *zone = (struct dns_zone *)0;
struct data_string nsaddrs;
int ix = strlen (zname);
if (zname [ix - 1] == '.')
ix = 0;
/* See if there's already such a zone. */
if (dns_zone_lookup (&zone, np) == ISC_R_SUCCESS) {
/* If it's not a dynamic zone, leave it alone. */
if (!zone -> timeout)
return;
/* Address may have changed, so just blow it away. */
if (zone -> primary)
option_cache_dereference (&zone -> primary, MDL);
if (zone -> secondary)
option_cache_dereference (&zone -> secondary, MDL);
}
if (!dns_zone_allocate (&zone, MDL))
return;
if (!zone -> name) {
zone -> name =
dmalloc (strlen (zname) + 1 + (ix != 0), MDL);
if (!zone -> name) {
dns_zone_dereference (&zone, MDL);
return;
}
strcpy (zone -> name, zname);
/* Add a trailing '.' if it was missing. */
if (ix) {
zone -> name [ix] = '.';
zone -> name [ix + 1] = 0;
}
}
/* XXX Need to get the lower-level code to push the actual zone
XXX TTL up to us. */
zone -> timeout = cur_time + 1800;
if (!option_cache_allocate (&zone -> primary, MDL)) {
dns_zone_dereference (&zone, MDL);
return;
}
if (!buffer_allocate (&zone -> primary -> data.buffer,
naddrs * sizeof (struct in_addr), MDL)) {
dns_zone_dereference (&zone, MDL);
return;
}
memcpy (zone -> primary -> data.buffer -> data,
addrs, naddrs * sizeof *addrs);
zone -> primary -> data.data =
&zone -> primary -> data.buffer -> data [0];
zone -> primary -> data.len = naddrs * sizeof *addrs;
enter_dns_zone (zone);
}
#endif /* NSUPDATE */
HASH_FUNCTIONS (dns_zone, const char *, struct dns_zone)