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Find room to store key-id and digest-type in DS records.

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->uid is now overloaded to store key length
This commit is contained in:
Simon Kelley
2012-04-04 21:55:59 +01:00
parent 7b4ad2eb34
commit cdbee9a40b
2 changed files with 19 additions and 7 deletions
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16
src/cache.c
View File

@@ -240,7 +240,11 @@ static int is_outdated_cname_pointer(struct crec *crecp)
if (!(crecp->flags & F_CNAME))
return 0;
if (crecp->addr.cname.cache && crecp->addr.cname.uid == crecp->addr.cname.cache->uid)
/* NB. record may be reused as DS or DNSKEY, where uid is
overloaded for something completely different */
if (crecp->addr.cname.cache &&
(crecp->addr.cname.cache->flags & (F_IPV4 | F_IPV6)) &&
crecp->addr.cname.uid == crecp->addr.cname.cache->uid)
return 0;
return 1;
@@ -1158,10 +1162,16 @@ void dump_cache(time_t now)
a = cache_get_name(cache->addr.cname.cache);
}
#ifdef HAVE_DNSSEC
else if (cache->flags & (F_DNSKEY | F_DS))
else if (cache->flags & F_DNSKEY)
{
a = daemon->addrbuff;
sprintf(a, "%u %u", cache->addr.key.algo, cache->addr.key.keylen);
sprintf(a, "%3u %u", cache->addr.key.algo, cache->uid);
}
else if (cache->flags & F_DS)
{
a = daemon->addrbuff;
sprintf(a, "%5u %3u %3u %u", cache->addr.key.flags_or_keyid,
cache->addr.key.algo, cache->addr.key.digest, cache->uid);
}
#endif
else

10
src/dnsmasq.h
View File

@@ -305,8 +305,7 @@ struct keydata {
struct crec {
struct crec *next, *prev, *hash_next;
time_t ttd; /* time to die */
int uid;
/* union is 16 bytes when doing IPv6, 8 bytes on 32 bit machines without IPv6 */
union {
struct all_addr addr;
struct {
@@ -316,10 +315,13 @@ struct crec {
struct {
struct keydata *keydata;
unsigned char algo;
unsigned char flags;
unsigned short keylen;
unsigned char digest; /* DS only */
unsigned short flags_or_keyid; /* flags for DNSKEY, keyid for DS */
} key;
} addr;
time_t ttd; /* time to die */
/* used as keylen if F_DS or F_DNSKEY, index to source for F_HOSTS */
int uid;
unsigned short flags;
union {
char sname[SMALLDNAME];