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Code Issues Releases Wiki Activity

SIG support

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This commit is contained in:
Bob Halley
1999-08-31 22:14:06 +00:00
parent e95d71d749
commit 732e0731de
13 changed files with 556 additions and 290 deletions
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95
lib/dns/message.c
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@@ -674,14 +674,15 @@ findname(dns_name_t **foundname, dns_name_t *target, dns_namelist_t *section)
}
static dns_result_t
findtype(dns_rdataset_t **rdataset, dns_name_t *name, dns_rdatatype_t type)
findtype(dns_rdataset_t **rdataset, dns_name_t *name, dns_rdatatype_t type,
dns_rdatatype_t covers)
{
dns_rdataset_t *curr;
for (curr = ISC_LIST_TAIL(name->list) ;
curr != NULL ;
curr = ISC_LIST_PREV(curr, link)) {
if (curr->type == type) {
if (curr->type == type && curr->covers == covers) {
if (rdataset != NULL)
*rdataset = curr;
return (DNS_R_SUCCESS);
@@ -880,7 +881,7 @@ getquestions(isc_buffer_t *source, dns_message_t *msg, dns_decompress_t *dctx)
/*
* Can't ask the same question twice.
*/
result = findtype(NULL, name, rdtype);
result = findtype(NULL, name, rdtype, 0);
if (result == DNS_R_SUCCESS)
return (DNS_R_FORMERR);
@@ -927,7 +928,7 @@ getsection(isc_buffer_t *source, dns_message_t *msg, dns_decompress_t *dctx,
dns_rdataset_t *rdataset;
dns_rdatalist_t *rdatalist;
dns_result_t result;
dns_rdatatype_t rdtype;
dns_rdatatype_t rdtype, covers;
dns_rdataclass_t rdclass;
dns_rdata_t *rdata;
dns_ttl_t ttl;
@@ -1038,42 +1039,6 @@ getsection(isc_buffer_t *source, dns_message_t *msg, dns_decompress_t *dctx,
return (DNS_R_FORMERR);
#endif
/*
* Search name for the particular type and class.
* Skip this stage if in update mode, or this is a TSIG.
*/
if (preserve_order || msg->opcode == dns_opcode_update
|| rdtype == dns_rdatatype_tsig)
result = DNS_R_NOTFOUND;
else
result = findtype(&rdataset, name, rdtype);
/*
* If we found an rdataset that matches, we need to
* append this rdata to that set. If we did not, we need
* to create a new rdatalist, store the important bits there,
* convert it to an rdataset, and link the latter to the name.
* Yuck.
*/
if (result == DNS_R_NOTFOUND) {
rdataset = newrdataset(msg);
if (rdataset == NULL)
return (DNS_R_NOMEMORY);
rdatalist = newrdatalist(msg);
if (rdatalist == NULL)
return (DNS_R_NOMEMORY);
rdatalist->type = rdtype;
rdatalist->rdclass = rdclass;
rdatalist->ttl = ttl;
ISC_LIST_INIT(rdatalist->rdata);
dns_rdataset_init(rdataset);
dns_rdatalist_tordataset(rdatalist, rdataset);
ISC_LIST_APPEND(name->list, rdataset, link);
}
/*
* Read the rdata from the wire format. Interpret the
* rdata according to its actual class, even if it had a
@@ -1093,6 +1058,51 @@ getsection(isc_buffer_t *source, dns_message_t *msg, dns_decompress_t *dctx,
if (result != DNS_R_SUCCESS)
return (result);
rdata->rdclass = rdclass;
if (rdtype == dns_rdatatype_sig && rdata->length > 0)
covers = dns_rdata_covers(rdata);
else
covers = 0;
/*
* Search name for the particular type and class.
* Skip this stage if in update mode, or this is a TSIG.
*/
if (preserve_order || msg->opcode == dns_opcode_update
|| rdtype == dns_rdatatype_tsig)
result = DNS_R_NOTFOUND;
else
result = findtype(&rdataset, name, rdtype, covers);
/*
* If we found an rdataset that matches, we need to
* append this rdata to that set. If we did not, we need
* to create a new rdatalist, store the important bits there,
* convert it to an rdataset, and link the latter to the name.
* Yuck.
*/
if (result == DNS_R_NOTFOUND) {
rdataset = newrdataset(msg);
if (rdataset == NULL)
return (DNS_R_NOMEMORY);
rdatalist = newrdatalist(msg);
if (rdatalist == NULL)
return (DNS_R_NOMEMORY);
rdatalist->type = rdtype;
rdatalist->covers = covers;
rdatalist->rdclass = rdclass;
rdatalist->ttl = ttl;
ISC_LIST_INIT(rdatalist->rdata);
dns_rdataset_init(rdataset);
dns_rdatalist_tordataset(rdatalist, rdataset);
ISC_LIST_APPEND(name->list, rdataset, link);
}
/*
* XXXRTH Normalize TTLs.
*/
/*
* XXXMLG Perform a totally ugly hack here to pull
@@ -1485,7 +1495,8 @@ dns_message_currentname(dns_message_t *msg, dns_section_t section,
dns_result_t
dns_message_findname(dns_message_t *msg, dns_section_t section,
dns_name_t *target, dns_rdatatype_t type,
dns_name_t **name, dns_rdataset_t **rdataset)
dns_rdatatype_t covers, dns_name_t **name,
dns_rdataset_t **rdataset)
{
dns_name_t *foundname;
dns_result_t result;
@@ -1526,7 +1537,7 @@ dns_message_findname(dns_message_t *msg, dns_section_t section,
if (type == dns_rdatatype_any)
return (DNS_R_SUCCESS);
result = findtype(rdataset, foundname, type);
result = findtype(rdataset, foundname, type, covers);
if (result == DNS_R_NOTFOUND)
return (DNS_R_NXRDATASET);