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update libunbound

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Riccardo Spagni 2015-05-31 16:36:48 +02:00
parent ce974949e2
commit 6a1190792b
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GPG key ID: 55432DF31CCD4FCD
59 changed files with 4449 additions and 2465 deletions
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2
external/unbound/util/data/msgparse.h vendored
View file

@ -76,6 +76,8 @@ struct regional;
extern time_t MAX_TTL;
/** Minimum TTL that is allowed. */
extern time_t MIN_TTL;
/** Maximum Negative TTL that is allowed */
extern time_t MAX_NEG_TTL;
/** Negative cache time (for entries without any RRs.) */
#define NORR_TTL 5 /* seconds */

29
external/unbound/util/data/msgreply.c vendored
View file

@ -57,6 +57,8 @@
time_t MAX_TTL = 3600 * 24 * 10; /* ten days */
/** MIN TTL default for messages and rrsets */
time_t MIN_TTL = 0;
/** MAX Negative TTL, for SOA records in authority section */
time_t MAX_NEG_TTL = 3600; /* one hour */
/** allocate qinfo, return 0 on error */
static int
@ -153,10 +155,23 @@ repinfo_alloc_rrset_keys(struct reply_info* rep, struct alloc_cache* alloc,
return 1;
}
/** find the minimumttl in the rdata of SOA record */
static time_t
soa_find_minttl(struct rr_parse* rr)
{
uint16_t rlen = sldns_read_uint16(rr->ttl_data+4);
if(rlen < 20)
return 0; /* rdata too small for SOA (dname, dname, 5*32bit) */
/* minimum TTL is the last 32bit value in the rdata of the record */
/* at position ttl_data + 4(ttl) + 2(rdatalen) + rdatalen - 4(timeval)*/
return (time_t)sldns_read_uint32(rr->ttl_data+6+rlen-4);
}
/** do the rdata copy */
static int
rdata_copy(sldns_buffer* pkt, struct packed_rrset_data* data, uint8_t* to,
struct rr_parse* rr, time_t* rr_ttl, uint16_t type)
struct rr_parse* rr, time_t* rr_ttl, uint16_t type,
sldns_pkt_section section)
{
uint16_t pkt_len;
const sldns_rr_descriptor* desc;
@ -165,6 +180,14 @@ rdata_copy(sldns_buffer* pkt, struct packed_rrset_data* data, uint8_t* to,
/* RFC 2181 Section 8. if msb of ttl is set treat as if zero. */
if(*rr_ttl & 0x80000000U)
*rr_ttl = 0;
if(type == LDNS_RR_TYPE_SOA && section == LDNS_SECTION_AUTHORITY) {
/* negative response. see if TTL of SOA record larger than the
* minimum-ttl in the rdata of the SOA record */
if(*rr_ttl > soa_find_minttl(rr))
*rr_ttl = soa_find_minttl(rr);
if(*rr_ttl > MAX_NEG_TTL)
*rr_ttl = MAX_NEG_TTL;
}
if(*rr_ttl < MIN_TTL)
*rr_ttl = MIN_TTL;
if(*rr_ttl < data->ttl)
@ -254,7 +277,7 @@ parse_rr_copy(sldns_buffer* pkt, struct rrset_parse* pset,
data->rr_data[i] = nextrdata;
nextrdata += rr->size;
if(!rdata_copy(pkt, data, data->rr_data[i], rr,
&data->rr_ttl[i], pset->type))
&data->rr_ttl[i], pset->type, pset->section))
return 0;
rr = rr->next;
}
@ -265,7 +288,7 @@ parse_rr_copy(sldns_buffer* pkt, struct rrset_parse* pset,
data->rr_data[i] = nextrdata;
nextrdata += rr->size;
if(!rdata_copy(pkt, data, data->rr_data[i], rr,
&data->rr_ttl[i], LDNS_RR_TYPE_RRSIG))
&data->rr_ttl[i], LDNS_RR_TYPE_RRSIG, pset->section))
return 0;
rr = rr->next;
}