ComputerSurge/bind9
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a6 chains in additional data

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This commit is contained in:
Bob Halley
1999-09-08 01:10:26 +00:00
parent 0b157747b3
commit 9637357a77
2 changed files with 117 additions and 50 deletions
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163
bin/named/query.c
View File

@@ -408,6 +408,29 @@ query_simplefind(void *arg, dns_name_t *name, dns_rdatatype_t type,
return (result);
}
static inline isc_boolean_t
query_isduplicate(ns_client_t *client, dns_name_t *name,
dns_rdatatype_t type)
{
dns_section_t section;
dns_name_t *mname;
for (section = DNS_SECTION_ANSWER;
section <= DNS_SECTION_ADDITIONAL;
section++) {
mname = NULL;
if (dns_message_findname(client->message, section,
name, type, 0, &mname, NULL) ==
ISC_R_SUCCESS) {
/*
* We've already got this RRset in the response.
*/
return (ISC_TRUE);
}
}
return (ISC_FALSE);
}
static isc_result_t
query_addadditional(void *arg, dns_name_t *name, dns_rdatatype_t type) {
@@ -415,9 +438,8 @@ query_addadditional(void *arg, dns_name_t *name, dns_rdatatype_t type) {
isc_result_t result, eresult;
dns_dbnode_t *node;
dns_db_t *db;
dns_name_t *fname, *mname;
dns_rdataset_t *rdataset, *sigrdataset;
dns_section_t section;
dns_name_t *fname;
dns_rdataset_t *rdataset, *sigrdataset, *a6rdataset;
isc_buffer_t *dbuf;
isc_buffer_t b;
dns_dbversion_t *version;
@@ -438,6 +460,7 @@ query_addadditional(void *arg, dns_name_t *name, dns_rdatatype_t type) {
fname = NULL;
rdataset = NULL;
sigrdataset = NULL;
a6rdataset = NULL;
db = NULL;
version = NULL;
node = NULL;
@@ -485,35 +508,88 @@ query_addadditional(void *arg, dns_name_t *name, dns_rdatatype_t type) {
goto cleanup;
}
/*
* Suppress duplicates.
*/
for (section = DNS_SECTION_ANSWER;
section <= DNS_SECTION_ADDITIONAL;
section++) {
mname = NULL;
result = dns_message_findname(client->message, section,
fname, type, 0, &mname, NULL);
if (result == ISC_R_SUCCESS) {
/*
* We've already got this RRset in the response.
*/
goto cleanup;
query_keepname(client, fname, dbuf);
if (!query_isduplicate(client, fname, type)) {
ISC_LIST_APPEND(fname->list, rdataset, link);
rdataset = NULL;
/*
* Note: we only add SIGs if we've added the type they cover,
* so we do not need to check if the SIG rdataset is already
* in the response.
*/
if (sigrdataset->methods != NULL) {
ISC_LIST_APPEND(fname->list, sigrdataset, link);
sigrdataset = NULL;
}
}
query_keepname(client, fname, dbuf);
ISC_LIST_APPEND(fname->list, rdataset, link);
rdataset = NULL;
/*
* Note: we only add SIGs if we've added the type they cover, so
* we do not need to check if the SIG rdataset is already in the
* response.
*/
if (sigrdataset->methods != NULL) {
ISC_LIST_APPEND(fname->list, sigrdataset, link);
sigrdataset = NULL;
if (type == dns_rdatatype_a) {
/*
* We treat type A additional section processing as if it
* were "any address type" additional section processing.
*
* We now go looking for A6 and AAAA records, along with
* their signatures.
*
* XXXRTH This code could be more efficient.
*/
if (rdataset != NULL) {
if (rdataset->methods != NULL)
dns_rdataset_disassociate(rdataset);
} else {
rdataset = query_newrdataset(client);
if (rdataset == NULL)
goto addname;
}
if (sigrdataset != NULL) {
if (sigrdataset->methods != NULL)
dns_rdataset_disassociate(sigrdataset);
} else {
sigrdataset = query_newrdataset(client);
if (sigrdataset == NULL)
goto addname;
}
result = dns_db_findrdataset(db, node, version,
dns_rdatatype_a6, 0,
client->requesttime, rdataset,
sigrdataset);
if (result == ISC_R_SUCCESS) {
if (!query_isduplicate(client, fname,
dns_rdatatype_a6)) {
a6rdataset = rdataset;
ISC_LIST_APPEND(fname->list, rdataset, link);
if (sigrdataset->methods != NULL) {
ISC_LIST_APPEND(fname->list,
sigrdataset, link);
sigrdataset =
query_newrdataset(client);
}
rdataset = query_newrdataset(client);
if (rdataset == NULL || sigrdataset == NULL)
goto addname;
} else
dns_rdataset_disassociate(rdataset);
}
result = dns_db_findrdataset(db, node, version,
dns_rdatatype_aaaa, 0,
client->requesttime, rdataset,
sigrdataset);
if (result == ISC_R_SUCCESS) {
if (!query_isduplicate(client, fname,
dns_rdatatype_aaaa)) {
ISC_LIST_APPEND(fname->list, rdataset, link);
if (sigrdataset->methods != NULL) {
ISC_LIST_APPEND(fname->list,
sigrdataset, link);
sigrdataset = NULL;
}
rdataset = NULL;
}
}
}
addname:
dns_message_addname(client->message, fname, DNS_SECTION_ADDITIONAL);
fname = NULL;
@@ -550,6 +626,14 @@ query_addadditional(void *arg, dns_name_t *name, dns_rdatatype_t type) {
client);
}
/*
* If we added an A6 rdataset, we should also add everything we
* know about the A6 chains. We wait until now to do this so that
* they'll come after any additional data added above.
*/
if (a6rdataset != NULL)
dns_a6_foreach(&client->query.a6ctx, a6rdataset);
cleanup:
if (sigrdataset != NULL) {
if (sigrdataset->methods != NULL)
@@ -578,9 +662,7 @@ query_adda6rrset(void *arg, dns_name_t *name, dns_rdataset_t *rdataset,
ns_client_t *client = arg;
dns_rdataset_t *crdataset, *csigrdataset;
isc_buffer_t b, *dbuf;
dns_name_t *fname, *mname;
dns_section_t section;
isc_result_t result;
dns_name_t *fname;
/*
* Add an rrset to the additional data section.
@@ -610,23 +692,8 @@ query_adda6rrset(void *arg, dns_name_t *name, dns_rdataset_t *rdataset,
if (sigrdataset->methods != NULL)
dns_rdataset_clone(sigrdataset, csigrdataset);
/*
* Suppress duplicates.
*/
for (section = DNS_SECTION_ANSWER;
section <= DNS_SECTION_ADDITIONAL;
section++) {
mname = NULL;
result = dns_message_findname(client->message, section,
fname, crdataset->type, 0,
&mname, NULL);
if (result == ISC_R_SUCCESS) {
/*
* We've already got this RRset in the response.
*/
goto cleanup;
}
}
if (query_isduplicate(client, fname, crdataset->type))
goto cleanup;
query_keepname(client, fname, dbuf);
ISC_LIST_APPEND(fname->list, crdataset, link);
crdataset = NULL;

4
bin/named/update.c
View File

@@ -296,7 +296,7 @@ foreach_rr(dns_db_t *db,
dns_rdataset_init(&rdataset);
result = dns_db_findrdataset(db, node, ver, type, covers,
(isc_stdtime_t) 0, &rdataset);
(isc_stdtime_t) 0, &rdataset, NULL);
if (result == DNS_R_NOTFOUND) {
result = DNS_R_SUCCESS;
goto cleanup_node;
@@ -660,7 +660,7 @@ temp_check(isc_mem_t *mctx, dns_diff_t *temp, dns_db_t *db,
dns_rdataset_init(&rdataset);
result = dns_db_findrdataset(db, node, ver, type,
covers, (isc_stdtime_t) 0,
&rdataset);
&rdataset, NULL);
if (result != DNS_R_SUCCESS) {
dns_db_detachnode(db, &node);
return (DNS_R_NXRRSET);