Flatten bind9 vendor work area

1 files changed, 163 insertions, 0 deletions

diff --git a/bin/named/notify.c b/bin/named/notify.c
new file mode 100644
index 0000000..db2be71
--- /dev/null
+++ b/bin/named/notify.c
@@ -0,0 +1,163 @@
+/*
+ * Copyright (C) 2004, 2005  Internet Systems Consortium, Inc. ("ISC")
+ * Copyright (C) 1999-2003  Internet Software Consortium.
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
+ * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
+ * AND FITNESS.  IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
+ * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
+ * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
+ * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+ * PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/* $Id: notify.c,v 1.30.18.3 2005/04/29 00:15:26 marka Exp $ */
+
+#include <config.h>
+
+#include <isc/log.h>
+#include <isc/print.h>
+
+#include <dns/message.h>
+#include <dns/rdataset.h>
+#include <dns/result.h>
+#include <dns/view.h>
+#include <dns/zone.h>
+#include <dns/zt.h>
+
+#include <named/log.h>
+#include <named/notify.h>
+
+/*! \file
+ * \brief
+ * This module implements notify as in RFC1996.
+ */
+
+static void
+notify_log(ns_client_t *client, int level, const char *fmt, ...) {
+	va_list ap;
+
+	va_start(ap, fmt);
+	ns_client_logv(client, DNS_LOGCATEGORY_NOTIFY, NS_LOGMODULE_NOTIFY,
+		       level, fmt, ap);
+	va_end(ap);
+}
+
+static void
+respond(ns_client_t *client, isc_result_t result) {
+	dns_rcode_t rcode;
+	dns_message_t *message;
+	isc_result_t msg_result;
+
+	message = client->message;
+	rcode = dns_result_torcode(result);
+
+	msg_result = dns_message_reply(message, ISC_TRUE);
+	if (msg_result != ISC_R_SUCCESS)
+		msg_result = dns_message_reply(message, ISC_FALSE);
+	if (msg_result != ISC_R_SUCCESS) {
+		ns_client_next(client, msg_result);
+		return;
+	}
+	message->rcode = rcode;
+	if (rcode == dns_rcode_noerror)
+		message->flags |= DNS_MESSAGEFLAG_AA;
+	else
+		message->flags &= ~DNS_MESSAGEFLAG_AA;
+	ns_client_send(client);
+}
+
+void
+ns_notify_start(ns_client_t *client) {
+	dns_message_t *request = client->message;
+	isc_result_t result;
+	dns_name_t *zonename;
+	dns_rdataset_t *zone_rdataset;
+	dns_zone_t *zone = NULL;
+	char namebuf[DNS_NAME_FORMATSIZE];
+	char tsigbuf[DNS_NAME_FORMATSIZE + sizeof(": TSIG ''")];
+	dns_name_t *tsigname;
+
+	/*
+	 * Interpret the question section.
+	 */
+	result = dns_message_firstname(request, DNS_SECTION_QUESTION);
+	if (result != ISC_R_SUCCESS) {
+		notify_log(client, ISC_LOG_NOTICE,
+			   "notify question section empty");
+		goto formerr;
+	}
+
+	/*
+	 * The question section must contain exactly one question.
+	 */
+	zonename = NULL;
+	dns_message_currentname(request, DNS_SECTION_QUESTION, &zonename);
+	zone_rdataset = ISC_LIST_HEAD(zonename->list);
+	if (ISC_LIST_NEXT(zone_rdataset, link) != NULL) {
+		notify_log(client, ISC_LOG_NOTICE,
+			   "notify question section contains multiple RRs");
+		goto formerr;
+	}
+
+	/* The zone section must have exactly one name. */
+	result = dns_message_nextname(request, DNS_SECTION_ZONE);
+	if (result != ISC_R_NOMORE) {
+		notify_log(client, ISC_LOG_NOTICE,
+			   "notify question section contains multiple RRs");
+		goto formerr;
+	}
+
+	/* The one rdataset must be an SOA. */
+	if (zone_rdataset->type != dns_rdatatype_soa) {
+		notify_log(client, ISC_LOG_NOTICE,
+			   "notify question section contains no SOA");
+		goto formerr;
+	}
+
+	tsigname = NULL;
+	if (dns_message_gettsig(request, &tsigname) != NULL) {
+		dns_name_format(tsigname, namebuf, sizeof(namebuf));
+		snprintf(tsigbuf, sizeof(tsigbuf), ": TSIG '%s'", namebuf);
+	} else
+		tsigbuf[0] = '\0';
+	dns_name_format(zonename, namebuf, sizeof(namebuf));
+	result = dns_zt_find(client->view->zonetable, zonename, 0, NULL,
+			     &zone);
+	if (result != ISC_R_SUCCESS)
+		goto notauth;
+
+	switch (dns_zone_gettype(zone)) {
+	case dns_zone_master:
+	case dns_zone_slave:
+	case dns_zone_stub:	/* Allow dialup passive to work. */
+		notify_log(client, ISC_LOG_INFO,
+			   "received notify for zone '%s'%s", namebuf, tsigbuf);
+		respond(client, dns_zone_notifyreceive(zone,
+			ns_client_getsockaddr(client), request));
+		break;
+	default:
+		goto notauth;
+	}
+	dns_zone_detach(&zone);
+	return;
+
+ notauth:
+	notify_log(client, ISC_LOG_NOTICE,
+		   "received notify for zone '%s'%s: not authoritative",
+		   namebuf, tsigbuf);
+	result = DNS_R_NOTAUTH;
+	goto failure;
+
+ formerr:
+	result = DNS_R_FORMERR;
+
+ failure:
+	if (zone != NULL)
+		dns_zone_detach(&zone);
+	respond(client, result);
+}