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Code Issues Releases Wiki Activity

964. [func] Warn if non root hints data is found in hints file.

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This commit is contained in:
Mark Andrews
2001-08-27 03:36:00 +00:00
parent 718b57f849
commit 73ac1894ea
4 changed files with 133 additions and 4 deletions
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129
lib/dns/rootns.c
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@@ -15,7 +15,7 @@
* WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
/* $Id: rootns.c,v 1.18 2001/01/09 21:51:30 bwelling Exp $ */
/* $Id: rootns.c,v 1.19 2001/08/27 03:35:57 marka Exp $ */
#include <config.h>
@@ -25,7 +25,14 @@
#include <dns/callbacks.h>
#include <dns/db.h>
#include <dns/dbiterator.h>
#include <dns/log.h>
#include <dns/fixedname.h>
#include <dns/master.h>
#include <dns/rdata.h>
#include <dns/rdatasetiter.h>
#include <dns/rdataset.h>
#include <dns/rdatastruct.h>
#include <dns/result.h>
#include <dns/rootns.h>
@@ -63,6 +70,120 @@ static char root_ns[] =
"L.ROOT-SERVERS.NET. 3600000 IN A 198.32.64.12\n"
"M.ROOT-SERVERS.NET. 3600000 IN A 202.12.27.33\n";
static isc_result_t
in_rootns(dns_rdataset_t *rootns, dns_name_t *name) {
isc_result_t result;
dns_rdata_t rdata = DNS_RDATA_INIT;
dns_rdata_ns_t ns;
result = dns_rdataset_first(rootns);
while (result == ISC_R_SUCCESS) {
dns_rdataset_current(rootns, &rdata);
result = dns_rdata_tostruct(&rdata, &ns, NULL);
if (result != ISC_R_SUCCESS)
return (result);
if (dns_name_compare(name, &ns.name) == 0)
return (ISC_R_SUCCESS);
result = dns_rdataset_next(rootns);
}
if (result == ISC_R_NOMORE)
result = ISC_R_NOTFOUND;
return (result);
}
static isc_result_t
check_node(dns_rdataset_t *rootns, dns_name_t *name,
dns_rdatasetiter_t *rdsiter) {
isc_result_t result;
dns_rdataset_t rdataset;
dns_rdataset_init(&rdataset);
result = dns_rdatasetiter_first(rdsiter);
while (result == ISC_R_SUCCESS) {
dns_rdatasetiter_current(rdsiter, &rdataset);
switch (rdataset.type) {
case dns_rdatatype_a:
case dns_rdatatype_aaaa:
case dns_rdatatype_a6:
result = in_rootns(rootns, name);
if (result != ISC_R_SUCCESS)
goto cleanup;
break;
case dns_rdatatype_ns:
if (dns_name_compare(name, dns_rootname) == 0)
break;
/*FALLTHROUGH*/
default:
result = ISC_R_FAILURE;
goto cleanup;
}
dns_rdataset_disassociate(&rdataset);
result = dns_rdatasetiter_next(rdsiter);
}
if (result == ISC_R_NOMORE)
result = ISC_R_SUCCESS;
cleanup:
if (dns_rdataset_isassociated(&rdataset))
dns_rdataset_disassociate(&rdataset);
return (result);
}
static isc_result_t
check_hints(dns_db_t *db) {
isc_result_t result;
dns_rdataset_t rootns;
dns_dbiterator_t *dbiter = NULL;
dns_dbnode_t *node = NULL;
isc_stdtime_t now;
dns_fixedname_t fixname;
dns_name_t *name;
dns_rdatasetiter_t *rdsiter = NULL;
isc_stdtime_get(&now);
dns_fixedname_init(&fixname);
name = dns_fixedname_name(&fixname);
dns_rdataset_init(&rootns);
result = dns_db_find(db, dns_rootname, NULL, dns_rdatatype_ns, 0,
now, NULL, name, &rootns, NULL);
if (result != ISC_R_SUCCESS)
goto cleanup;
result = dns_db_createiterator(db, ISC_FALSE, &dbiter);
if (result != ISC_R_SUCCESS)
goto cleanup;
result = dns_dbiterator_first(dbiter);
if (result != ISC_R_SUCCESS)
goto cleanup;
while (result == ISC_R_SUCCESS) {
result = dns_dbiterator_current(dbiter, &node, name);
if (result != ISC_R_SUCCESS)
goto cleanup;
result = dns_db_allrdatasets(db, node, NULL, now, &rdsiter);
if (result != ISC_R_SUCCESS)
goto cleanup;
result = check_node(&rootns, name, rdsiter);
if (result != ISC_R_SUCCESS)
goto cleanup;
dns_rdatasetiter_destroy(&rdsiter);
dns_db_detachnode(db, &node);
result = dns_dbiterator_next(dbiter);
}
if (result == ISC_R_NOMORE)
result = ISC_R_SUCCESS;
cleanup:
if (dns_rdataset_isassociated(&rootns))
dns_rdataset_disassociate(&rootns);
if (rdsiter != NULL)
dns_rdatasetiter_destroy(&rdsiter);
if (node != NULL)
dns_db_detachnode(db, &node);
if (dbiter != NULL)
dns_dbiterator_destroy(&dbiter);
return (result);
}
isc_result_t
dns_rootns_create(isc_mem_t *mctx, dns_rdataclass_t rdclass,
const char *filename, dns_db_t **target)
@@ -111,7 +232,11 @@ dns_rootns_create(isc_mem_t *mctx, dns_rdataclass_t rdclass,
result = eresult;
if (result != ISC_R_SUCCESS && result != DNS_R_SEENINCLUDE)
goto db_detach;
if (check_hints(db) != ISC_R_SUCCESS)
isc_log_write(dns_lctx, DNS_LOGCATEGORY_GENERAL,
DNS_LOGMODULE_HINTS, ISC_LOG_WARNING,
"extra data in root hints \"%s\"",
(filename != NULL) ? filename : "<BUILT-IN>");
*target = db;
return (ISC_R_SUCCESS);