1 files changed, 271 insertions, 4 deletions
diff --git a/contrib/bind9/lib/dns/rootns.c b/contrib/bind9/lib/dns/rootns.c
index 9e9c940..1c038a4 100644
--- a/contrib/bind9/lib/dns/rootns.c
+++ b/contrib/bind9/lib/dns/rootns.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2004  Internet Systems Consortium, Inc. ("ISC")
+ * Copyright (C) 2004, 2005  Internet Systems Consortium, Inc. ("ISC")
  * Copyright (C) 1999-2002  Internet Software Consortium.
  *
  * Permission to use, copy, modify, and distribute this software for any
@@ -15,7 +15,9 @@
  * PERFORMANCE OF THIS SOFTWARE.
  */
 
-/* $Id: rootns.c,v 1.20.2.3.2.5 2004/03/08 09:04:32 marka Exp $ */
+/* $Id: rootns.c,v 1.26.18.3 2005/04/27 05:01:26 sra Exp $ */
+
+/*! \file */
 
 #include <config.h>
 
@@ -26,15 +28,18 @@
 #include <dns/callbacks.h>
 #include <dns/db.h>
 #include <dns/dbiterator.h>
-#include <dns/log.h>
 #include <dns/fixedname.h>
+#include <dns/log.h>
 #include <dns/master.h>
 #include <dns/rdata.h>
-#include <dns/rdatasetiter.h>
+#include <dns/rdata.h>
 #include <dns/rdataset.h>
+#include <dns/rdatasetiter.h>
 #include <dns/rdatastruct.h>
+#include <dns/rdatatype.h>
 #include <dns/result.h>
 #include <dns/rootns.h>
+#include <dns/view.h>
 
 static char root_ns[] =
 ";\n"
@@ -245,3 +250,265 @@ dns_rootns_create(isc_mem_t *mctx, dns_rdataclass_t rdclass,
 
 	return (result);
 }
+
+static void
+report(dns_view_t *view, dns_name_t *name, isc_boolean_t missing,
+       dns_rdata_t *rdata)
+{
+	const char *viewname = "", *sep = "";
+	char namebuf[DNS_NAME_FORMATSIZE];
+	char typebuf[DNS_RDATATYPE_FORMATSIZE];
+	char databuf[sizeof("xxxx:xxxx:xxxx:xxxx:xxxx:xxxx:123.123.123.123")];
+	isc_buffer_t buffer;
+	isc_result_t result;
+
+        if (strcmp(view->name, "_bind") != 0 &&
+            strcmp(view->name, "_default") != 0) {
+                viewname = view->name;
+                sep = ": view ";
+        }
+
+	dns_name_format(name, namebuf, sizeof(namebuf));
+	dns_rdatatype_format(rdata->type, typebuf, sizeof(typebuf));
+	isc_buffer_init(&buffer, databuf, sizeof(databuf) - 1);
+	result = dns_rdata_totext(rdata, NULL, &buffer);
+	RUNTIME_CHECK(result == ISC_R_SUCCESS);
+	databuf[isc_buffer_usedlength(&buffer)] = '\0';
+
+	if (missing)
+		isc_log_write(dns_lctx, DNS_LOGCATEGORY_GENERAL,
+			      DNS_LOGMODULE_HINTS, ISC_LOG_WARNING,
+			      "checkhints%s%s: %s/%s (%s) missing from hints",
+			      sep, viewname, namebuf, typebuf, databuf);
+	else
+		isc_log_write(dns_lctx, DNS_LOGCATEGORY_GENERAL,
+			      DNS_LOGMODULE_HINTS, ISC_LOG_WARNING,
+			      "checkhints%s%s: %s/%s (%s) extra record "
+			      "in hints", sep, viewname, namebuf, typebuf,
+			      databuf);
+}
+
+static isc_boolean_t
+inrrset(dns_rdataset_t *rrset, dns_rdata_t *rdata) {
+	isc_result_t result;
+	dns_rdata_t current = DNS_RDATA_INIT;
+
+	result = dns_rdataset_first(rrset);
+	while (result == ISC_R_SUCCESS) {
+		dns_rdataset_current(rrset, &current);
+		if (dns_rdata_compare(rdata, &current) == 0)
+			return (ISC_TRUE);
+		dns_rdata_reset(&current);
+		result = dns_rdataset_next(rrset);
+	}
+	return (ISC_FALSE);
+}
+
+/*
+ * Check that the address RRsets match.
+ *
+ * Note we don't complain about missing glue records.
+ */
+
+static void
+check_address_records(dns_view_t *view, dns_db_t *hints, dns_db_t *db,
+		      dns_name_t *name, isc_stdtime_t now)
+{
+	isc_result_t hresult, rresult, result;
+	dns_rdataset_t hintrrset, rootrrset;
+	dns_rdata_t rdata = DNS_RDATA_INIT;
+	dns_name_t *foundname;
+	dns_fixedname_t fixed;
+
+	dns_rdataset_init(&hintrrset);
+	dns_rdataset_init(&rootrrset);
+	dns_fixedname_init(&fixed);
+	foundname = dns_fixedname_name(&fixed);
+
+	hresult = dns_db_find(hints, name, NULL, dns_rdatatype_a, 0,
+			      now, NULL, foundname, &hintrrset, NULL);
+	rresult = dns_db_find(db, name, NULL, dns_rdatatype_a,
+			      DNS_DBFIND_GLUEOK, now, NULL, foundname,
+			      &rootrrset, NULL);
+	if (hresult == ISC_R_SUCCESS &&
+	    (rresult == ISC_R_SUCCESS || rresult == DNS_R_GLUE)) {
+		result = dns_rdataset_first(&rootrrset);
+		while (result == ISC_R_SUCCESS) {
+			dns_rdataset_current(&rootrrset, &rdata);
+			if (!inrrset(&hintrrset, &rdata))
+				report(view, name, ISC_TRUE, &rdata);
+			result = dns_rdataset_next(&rootrrset);
+		}
+		result = dns_rdataset_first(&hintrrset);
+		while (result == ISC_R_SUCCESS) {
+			dns_rdataset_current(&hintrrset, &rdata);
+			if (!inrrset(&rootrrset, &rdata))
+				report(view, name, ISC_FALSE, &rdata);
+			result = dns_rdataset_next(&hintrrset);
+		}
+	} 
+	if (hresult == ISC_R_NOTFOUND &&
+	    (rresult == ISC_R_SUCCESS || rresult == DNS_R_GLUE)) {
+		result = dns_rdataset_first(&rootrrset);
+		while (result == ISC_R_SUCCESS) {
+			dns_rdataset_current(&rootrrset, &rdata);
+			report(view, name, ISC_TRUE, &rdata);
+			result = dns_rdataset_next(&rootrrset);
+		}
+	}
+	if (dns_rdataset_isassociated(&rootrrset))
+		dns_rdataset_disassociate(&rootrrset);
+	if (dns_rdataset_isassociated(&hintrrset))
+		dns_rdataset_disassociate(&hintrrset);
+
+	/*
+	 * Check AAAA records.
+	 */
+	hresult = dns_db_find(hints, name, NULL, dns_rdatatype_aaaa, 0,
+			      now, NULL, foundname, &hintrrset, NULL);
+	rresult = dns_db_find(db, name, NULL, dns_rdatatype_aaaa,
+			      DNS_DBFIND_GLUEOK, now, NULL, foundname,
+			      &rootrrset, NULL);
+	if (hresult == ISC_R_SUCCESS &&
+	    (rresult == ISC_R_SUCCESS || rresult == DNS_R_GLUE)) {
+		result = dns_rdataset_first(&rootrrset);
+		while (result == ISC_R_SUCCESS) {
+			dns_rdataset_current(&rootrrset, &rdata);
+			if (!inrrset(&hintrrset, &rdata))
+				report(view, name, ISC_TRUE, &rdata);
+			dns_rdata_reset(&rdata);
+			result = dns_rdataset_next(&rootrrset);
+		}
+		result = dns_rdataset_first(&hintrrset);
+		while (result == ISC_R_SUCCESS) {
+			dns_rdataset_current(&hintrrset, &rdata);
+			if (!inrrset(&rootrrset, &rdata))
+				report(view, name, ISC_FALSE, &rdata);
+			dns_rdata_reset(&rdata);
+			result = dns_rdataset_next(&hintrrset);
+		}
+	} 
+	if (hresult == ISC_R_NOTFOUND &&
+	    (rresult == ISC_R_SUCCESS || rresult == DNS_R_GLUE)) {
+		result = dns_rdataset_first(&rootrrset);
+		while (result == ISC_R_SUCCESS) {
+			dns_rdataset_current(&rootrrset, &rdata);
+			report(view, name, ISC_TRUE, &rdata);
+			dns_rdata_reset(&rdata);
+			result = dns_rdataset_next(&rootrrset);
+		}
+	}
+	if (dns_rdataset_isassociated(&rootrrset))
+		dns_rdataset_disassociate(&rootrrset);
+	if (dns_rdataset_isassociated(&hintrrset))
+		dns_rdataset_disassociate(&hintrrset);
+}
+
+void
+dns_root_checkhints(dns_view_t *view, dns_db_t *hints, dns_db_t *db) {
+	isc_result_t result;
+	dns_rdata_t rdata = DNS_RDATA_INIT;
+	dns_rdata_ns_t ns;
+	dns_rdataset_t hintns, rootns;
+	const char *viewname = "", *sep = "";
+	isc_stdtime_t now;
+	dns_name_t *name;
+	dns_fixedname_t fixed;
+
+	REQUIRE(hints != NULL);
+	REQUIRE(db != NULL);
+	REQUIRE(view != NULL);
+
+	isc_stdtime_get(&now);
+
+        if (strcmp(view->name, "_bind") != 0 &&
+            strcmp(view->name, "_default") != 0) {
+                viewname = view->name;
+                sep = ": view ";
+        }
+
+	dns_rdataset_init(&hintns);
+	dns_rdataset_init(&rootns);
+	dns_fixedname_init(&fixed);
+	name = dns_fixedname_name(&fixed);
+
+	result = dns_db_find(hints, dns_rootname, NULL, dns_rdatatype_ns, 0,
+			     now, NULL, name, &hintns, NULL);
+	if (result != ISC_R_SUCCESS) {
+		isc_log_write(dns_lctx, DNS_LOGCATEGORY_GENERAL,
+			      DNS_LOGMODULE_HINTS, ISC_LOG_WARNING,
+			      "checkhints%s%s: unable to get root NS rrset "
+			      "from hints: %s", sep, viewname,
+			      dns_result_totext(result));
+		goto cleanup;
+	}
+
+	result = dns_db_find(db, dns_rootname, NULL, dns_rdatatype_ns, 0,
+			     now, NULL, name, &rootns, NULL);
+	if (result != ISC_R_SUCCESS) {
+		isc_log_write(dns_lctx, DNS_LOGCATEGORY_GENERAL,
+			      DNS_LOGMODULE_HINTS, ISC_LOG_WARNING,
+			      "checkhints%s%s: unable to get root NS rrset "
+			      "from cache: %s", sep, viewname,
+			      dns_result_totext(result));
+		goto cleanup;
+	}
+	
+	/*
+	 * Look for missing root NS names.
+	 */
+	result = dns_rdataset_first(&rootns);
+	while (result == ISC_R_SUCCESS) {
+		dns_rdataset_current(&rootns, &rdata);
+		result = dns_rdata_tostruct(&rdata, &ns, NULL);
+		RUNTIME_CHECK(result == ISC_R_SUCCESS);
+		result = in_rootns(&hintns, &ns.name);
+		if (result != ISC_R_SUCCESS) {
+			char namebuf[DNS_NAME_FORMATSIZE];
+			/* missing from hints */
+			dns_name_format(&ns.name, namebuf, sizeof(namebuf));
+			isc_log_write(dns_lctx, DNS_LOGCATEGORY_GENERAL,
+				      DNS_LOGMODULE_HINTS, ISC_LOG_WARNING,
+				      "checkhints%s%s: unable to find root "
+				      "NS '%s' in hints", sep, viewname,
+				      namebuf);
+		} else 
+			check_address_records(view, hints, db, &ns.name, now);
+		dns_rdata_reset(&rdata);
+		result = dns_rdataset_next(&rootns);
+	}
+	if (result != ISC_R_NOMORE) {
+		goto cleanup;
+	}
+
+	/*
+	 * Look for extra root NS names.
+	 */
+	result = dns_rdataset_first(&hintns);
+	while (result == ISC_R_SUCCESS) {
+		dns_rdataset_current(&hintns, &rdata);
+		result = dns_rdata_tostruct(&rdata, &ns, NULL);
+		RUNTIME_CHECK(result == ISC_R_SUCCESS);
+		result = in_rootns(&rootns, &ns.name);
+		if (result != ISC_R_SUCCESS) {
+			char namebuf[DNS_NAME_FORMATSIZE];
+			/* extra entry in hints */
+			dns_name_format(&ns.name, namebuf, sizeof(namebuf));
+			isc_log_write(dns_lctx, DNS_LOGCATEGORY_GENERAL,
+				      DNS_LOGMODULE_HINTS, ISC_LOG_WARNING,
+				      "checkhints%s%s: extra NS '%s' in hints",
+				      sep, viewname, namebuf);
+		}
+		dns_rdata_reset(&rdata);
+		result = dns_rdataset_next(&hintns);
+	}
+	if (result != ISC_R_NOMORE) {
+		goto cleanup;
+	}
+
+ cleanup:
+	if (dns_rdataset_isassociated(&rootns))
+		dns_rdataset_disassociate(&rootns);
+	if (dns_rdataset_isassociated(&hintns))
+		dns_rdataset_disassociate(&hintns);
+}