2 * Copyright (C) 2004-2011 Internet Systems Consortium, Inc. ("ISC")
3 * Copyright (C) 1999-2003 Internet Software Consortium.
5 * Permission to use, copy, modify, and/or distribute this software for any
6 * purpose with or without fee is hereby granted, provided that the above
7 * copyright notice and this permission notice appear in all copies.
9 * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
10 * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
11 * AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
12 * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
13 * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
14 * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
15 * PERFORMANCE OF THIS SOFTWARE.
18 /* $Id: xfrout.c,v 1.139.16.3 2011-07-28 04:30:54 marka Exp $ */
22 #include <isc/formatcheck.h>
24 #include <isc/timer.h>
25 #include <isc/print.h>
26 #include <isc/stats.h>
30 #include <dns/dbiterator.h>
32 #include <dns/fixedname.h>
33 #include <dns/journal.h>
34 #include <dns/message.h>
36 #include <dns/rdataclass.h>
37 #include <dns/rdatalist.h>
38 #include <dns/rdataset.h>
39 #include <dns/rdatasetiter.h>
40 #include <dns/result.h>
41 #include <dns/rriterator.h>
43 #include <dns/stats.h>
44 #include <dns/timer.h>
50 #include <named/client.h>
51 #include <named/log.h>
52 #include <named/server.h>
53 #include <named/xfrout.h>
57 * Outgoing AXFR and IXFR.
65 #define XFROUT_COMMON_LOGARGS \
66 ns_g_lctx, DNS_LOGCATEGORY_XFER_OUT, NS_LOGMODULE_XFER_OUT
68 #define XFROUT_PROTOCOL_LOGARGS \
69 XFROUT_COMMON_LOGARGS, ISC_LOG_INFO
71 #define XFROUT_DEBUG_LOGARGS(n) \
72 XFROUT_COMMON_LOGARGS, ISC_LOG_DEBUG(n)
74 #define XFROUT_RR_LOGARGS \
75 XFROUT_COMMON_LOGARGS, XFROUT_RR_LOGLEVEL
77 #define XFROUT_RR_LOGLEVEL ISC_LOG_DEBUG(8)
80 * Fail unconditionally and log as a client error.
81 * The test against ISC_R_SUCCESS is there to keep the Solaris compiler
82 * from complaining about "end-of-loop code not reached".
84 #define FAILC(code, msg) \
87 ns_client_log(client, DNS_LOGCATEGORY_XFER_OUT, \
88 NS_LOGMODULE_XFER_OUT, ISC_LOG_INFO, \
89 "bad zone transfer request: %s (%s)", \
90 msg, isc_result_totext(code)); \
91 if (result != ISC_R_SUCCESS) goto failure; \
94 #define FAILQ(code, msg, question, rdclass) \
96 char _buf1[DNS_NAME_FORMATSIZE]; \
97 char _buf2[DNS_RDATACLASS_FORMATSIZE]; \
99 dns_name_format(question, _buf1, sizeof(_buf1)); \
100 dns_rdataclass_format(rdclass, _buf2, sizeof(_buf2)); \
101 ns_client_log(client, DNS_LOGCATEGORY_XFER_OUT, \
102 NS_LOGMODULE_XFER_OUT, ISC_LOG_INFO, \
103 "bad zone transfer request: '%s/%s': %s (%s)", \
104 _buf1, _buf2, msg, isc_result_totext(code)); \
105 if (result != ISC_R_SUCCESS) goto failure; \
109 do { result = (op); \
110 if (result != ISC_R_SUCCESS) goto failure; \
113 /**************************************************************************/
116 inc_stats(dns_zone_t *zone, isc_statscounter_t counter) {
117 isc_stats_increment(ns_g_server->nsstats, counter);
119 isc_stats_t *zonestats = dns_zone_getrequeststats(zone);
120 if (zonestats != NULL)
121 isc_stats_increment(zonestats, counter);
125 /**************************************************************************/
127 /*% Log an RR (for debugging) */
130 log_rr(dns_name_t *name, dns_rdata_t *rdata, isc_uint32_t ttl) {
136 dns_rdata_t rd = DNS_RDATA_INIT;
138 rdl.type = rdata->type;
139 rdl.rdclass = rdata->rdclass;
141 if (rdata->type == dns_rdatatype_sig ||
142 rdata->type == dns_rdatatype_rrsig)
143 rdl.covers = dns_rdata_covers(rdata);
145 rdl.covers = dns_rdatatype_none;
146 ISC_LIST_INIT(rdl.rdata);
147 ISC_LINK_INIT(&rdl, link);
148 dns_rdataset_init(&rds);
150 dns_rdata_clone(rdata, &rd);
151 ISC_LIST_APPEND(rdl.rdata, &rd, link);
152 RUNTIME_CHECK(dns_rdatalist_tordataset(&rdl, &rds) == ISC_R_SUCCESS);
154 isc_buffer_init(&buf, mem, sizeof(mem));
155 result = dns_rdataset_totext(&rds, name,
156 ISC_FALSE, ISC_FALSE, &buf);
159 * We could use xfrout_log(), but that would produce
160 * very long lines with a repetitive prefix.
162 if (result == ISC_R_SUCCESS) {
164 * Get rid of final newline.
166 INSIST(buf.used >= 1 &&
167 ((char *) buf.base)[buf.used - 1] == '\n');
170 isc_log_write(XFROUT_RR_LOGARGS, "%.*s",
171 (int)isc_buffer_usedlength(&buf),
172 (char *)isc_buffer_base(&buf));
174 isc_log_write(XFROUT_RR_LOGARGS, "<RR too large to print>");
178 /**************************************************************************/
180 * An 'rrstream_t' is a polymorphic iterator that returns
181 * a stream of resource records. There are multiple implementations,
182 * e.g. for generating AXFR and IXFR records streams.
185 typedef struct rrstream_methods rrstream_methods_t;
187 typedef struct rrstream {
189 rrstream_methods_t *methods;
192 struct rrstream_methods {
193 isc_result_t (*first)(rrstream_t *);
194 isc_result_t (*next)(rrstream_t *);
195 void (*current)(rrstream_t *,
199 void (*pause)(rrstream_t *);
200 void (*destroy)(rrstream_t **);
204 rrstream_noop_pause(rrstream_t *rs) {
208 /**************************************************************************/
210 * An 'ixfr_rrstream_t' is an 'rrstream_t' that returns
211 * an IXFR-like RR stream from a journal file.
213 * The SOA at the beginning of each sequence of additions
214 * or deletions are included in the stream, but the extra
215 * SOAs at the beginning and end of the entire transfer are
219 typedef struct ixfr_rrstream {
221 dns_journal_t *journal;
224 /* Forward declarations. */
226 ixfr_rrstream_destroy(rrstream_t **sp);
228 static rrstream_methods_t ixfr_rrstream_methods;
231 * Returns: anything dns_journal_open() or dns_journal_iter_init()
236 ixfr_rrstream_create(isc_mem_t *mctx,
237 const char *journal_filename,
238 isc_uint32_t begin_serial,
239 isc_uint32_t end_serial,
245 INSIST(sp != NULL && *sp == NULL);
247 s = isc_mem_get(mctx, sizeof(*s));
249 return (ISC_R_NOMEMORY);
250 s->common.mctx = mctx;
251 s->common.methods = &ixfr_rrstream_methods;
254 CHECK(dns_journal_open(mctx, journal_filename,
255 ISC_FALSE, &s->journal));
256 CHECK(dns_journal_iter_init(s->journal, begin_serial, end_serial));
258 *sp = (rrstream_t *) s;
259 return (ISC_R_SUCCESS);
262 ixfr_rrstream_destroy((rrstream_t **) (void *)&s);
267 ixfr_rrstream_first(rrstream_t *rs) {
268 ixfr_rrstream_t *s = (ixfr_rrstream_t *) rs;
269 return (dns_journal_first_rr(s->journal));
273 ixfr_rrstream_next(rrstream_t *rs) {
274 ixfr_rrstream_t *s = (ixfr_rrstream_t *) rs;
275 return (dns_journal_next_rr(s->journal));
279 ixfr_rrstream_current(rrstream_t *rs,
280 dns_name_t **name, isc_uint32_t *ttl,
283 ixfr_rrstream_t *s = (ixfr_rrstream_t *) rs;
284 dns_journal_current_rr(s->journal, name, ttl, rdata);
288 ixfr_rrstream_destroy(rrstream_t **rsp) {
289 ixfr_rrstream_t *s = (ixfr_rrstream_t *) *rsp;
291 dns_journal_destroy(&s->journal);
292 isc_mem_put(s->common.mctx, s, sizeof(*s));
295 static rrstream_methods_t ixfr_rrstream_methods = {
298 ixfr_rrstream_current,
300 ixfr_rrstream_destroy
303 /**************************************************************************/
305 * An 'axfr_rrstream_t' is an 'rrstream_t' that returns
306 * an AXFR-like RR stream from a database.
308 * The SOAs at the beginning and end of the transfer are
309 * not included in the stream.
312 typedef struct axfr_rrstream {
315 isc_boolean_t it_valid;
319 * Forward declarations.
322 axfr_rrstream_destroy(rrstream_t **rsp);
324 static rrstream_methods_t axfr_rrstream_methods;
327 axfr_rrstream_create(isc_mem_t *mctx, dns_db_t *db, dns_dbversion_t *ver,
333 INSIST(sp != NULL && *sp == NULL);
335 s = isc_mem_get(mctx, sizeof(*s));
337 return (ISC_R_NOMEMORY);
338 s->common.mctx = mctx;
339 s->common.methods = &axfr_rrstream_methods;
340 s->it_valid = ISC_FALSE;
342 CHECK(dns_rriterator_init(&s->it, db, ver, 0));
343 s->it_valid = ISC_TRUE;
345 *sp = (rrstream_t *) s;
346 return (ISC_R_SUCCESS);
349 axfr_rrstream_destroy((rrstream_t **) (void *)&s);
354 axfr_rrstream_first(rrstream_t *rs) {
355 axfr_rrstream_t *s = (axfr_rrstream_t *) rs;
357 result = dns_rriterator_first(&s->it);
358 if (result != ISC_R_SUCCESS)
360 /* Skip SOA records. */
362 dns_name_t *name_dummy = NULL;
363 isc_uint32_t ttl_dummy;
364 dns_rdata_t *rdata = NULL;
365 dns_rriterator_current(&s->it, &name_dummy,
366 &ttl_dummy, NULL, &rdata);
367 if (rdata->type != dns_rdatatype_soa)
369 result = dns_rriterator_next(&s->it);
370 if (result != ISC_R_SUCCESS)
377 axfr_rrstream_next(rrstream_t *rs) {
378 axfr_rrstream_t *s = (axfr_rrstream_t *) rs;
381 /* Skip SOA records. */
383 dns_name_t *name_dummy = NULL;
384 isc_uint32_t ttl_dummy;
385 dns_rdata_t *rdata = NULL;
386 result = dns_rriterator_next(&s->it);
387 if (result != ISC_R_SUCCESS)
389 dns_rriterator_current(&s->it, &name_dummy,
390 &ttl_dummy, NULL, &rdata);
391 if (rdata->type != dns_rdatatype_soa)
398 axfr_rrstream_current(rrstream_t *rs, dns_name_t **name, isc_uint32_t *ttl,
401 axfr_rrstream_t *s = (axfr_rrstream_t *) rs;
402 dns_rriterator_current(&s->it, name, ttl, NULL, rdata);
406 axfr_rrstream_pause(rrstream_t *rs) {
407 axfr_rrstream_t *s = (axfr_rrstream_t *) rs;
408 dns_rriterator_pause(&s->it);
412 axfr_rrstream_destroy(rrstream_t **rsp) {
413 axfr_rrstream_t *s = (axfr_rrstream_t *) *rsp;
415 dns_rriterator_destroy(&s->it);
416 isc_mem_put(s->common.mctx, s, sizeof(*s));
419 static rrstream_methods_t axfr_rrstream_methods = {
422 axfr_rrstream_current,
424 axfr_rrstream_destroy
427 /**************************************************************************/
429 * An 'soa_rrstream_t' is a degenerate 'rrstream_t' that returns
430 * a single SOA record.
433 typedef struct soa_rrstream {
435 dns_difftuple_t *soa_tuple;
439 * Forward declarations.
442 soa_rrstream_destroy(rrstream_t **rsp);
444 static rrstream_methods_t soa_rrstream_methods;
447 soa_rrstream_create(isc_mem_t *mctx, dns_db_t *db, dns_dbversion_t *ver,
453 INSIST(sp != NULL && *sp == NULL);
455 s = isc_mem_get(mctx, sizeof(*s));
457 return (ISC_R_NOMEMORY);
458 s->common.mctx = mctx;
459 s->common.methods = &soa_rrstream_methods;
462 CHECK(dns_db_createsoatuple(db, ver, mctx, DNS_DIFFOP_EXISTS,
465 *sp = (rrstream_t *) s;
466 return (ISC_R_SUCCESS);
469 soa_rrstream_destroy((rrstream_t **) (void *)&s);
474 soa_rrstream_first(rrstream_t *rs) {
476 return (ISC_R_SUCCESS);
480 soa_rrstream_next(rrstream_t *rs) {
482 return (ISC_R_NOMORE);
486 soa_rrstream_current(rrstream_t *rs, dns_name_t **name, isc_uint32_t *ttl,
489 soa_rrstream_t *s = (soa_rrstream_t *) rs;
490 *name = &s->soa_tuple->name;
491 *ttl = s->soa_tuple->ttl;
492 *rdata = &s->soa_tuple->rdata;
496 soa_rrstream_destroy(rrstream_t **rsp) {
497 soa_rrstream_t *s = (soa_rrstream_t *) *rsp;
498 if (s->soa_tuple != NULL)
499 dns_difftuple_free(&s->soa_tuple);
500 isc_mem_put(s->common.mctx, s, sizeof(*s));
503 static rrstream_methods_t soa_rrstream_methods = {
506 soa_rrstream_current,
511 /**************************************************************************/
513 * A 'compound_rrstream_t' objects owns a soa_rrstream
514 * and another rrstream, the "data stream". It returns
515 * a concatenated stream consisting of the soa_rrstream, then
516 * the data stream, then the soa_rrstream again.
518 * The component streams are owned by the compound_rrstream_t
519 * and are destroyed with it.
522 typedef struct compound_rrstream {
524 rrstream_t *components[3];
527 } compound_rrstream_t;
530 * Forward declarations.
533 compound_rrstream_destroy(rrstream_t **rsp);
536 compound_rrstream_next(rrstream_t *rs);
538 static rrstream_methods_t compound_rrstream_methods;
542 * soa_stream != NULL && *soa_stream != NULL
543 * data_stream != NULL && *data_stream != NULL
544 * sp != NULL && *sp == NULL
547 * *soa_stream == NULL
548 * *data_stream == NULL
549 * *sp points to a valid compound_rrstream_t
550 * The soa and data streams will be destroyed
551 * when the compound_rrstream_t is destroyed.
554 compound_rrstream_create(isc_mem_t *mctx, rrstream_t **soa_stream,
555 rrstream_t **data_stream, rrstream_t **sp)
557 compound_rrstream_t *s;
559 INSIST(sp != NULL && *sp == NULL);
561 s = isc_mem_get(mctx, sizeof(*s));
563 return (ISC_R_NOMEMORY);
564 s->common.mctx = mctx;
565 s->common.methods = &compound_rrstream_methods;
566 s->components[0] = *soa_stream;
567 s->components[1] = *data_stream;
568 s->components[2] = *soa_stream;
570 s->result = ISC_R_FAILURE;
574 *sp = (rrstream_t *) s;
575 return (ISC_R_SUCCESS);
579 compound_rrstream_first(rrstream_t *rs) {
580 compound_rrstream_t *s = (compound_rrstream_t *) rs;
583 rrstream_t *curstream = s->components[s->state];
584 s->result = curstream->methods->first(curstream);
585 } while (s->result == ISC_R_NOMORE && s->state < 2);
590 compound_rrstream_next(rrstream_t *rs) {
591 compound_rrstream_t *s = (compound_rrstream_t *) rs;
592 rrstream_t *curstream = s->components[s->state];
593 s->result = curstream->methods->next(curstream);
594 while (s->result == ISC_R_NOMORE) {
596 * Make sure locks held by the current stream
597 * are released before we switch streams.
599 curstream->methods->pause(curstream);
601 return (ISC_R_NOMORE);
603 curstream = s->components[s->state];
604 s->result = curstream->methods->first(curstream);
610 compound_rrstream_current(rrstream_t *rs, dns_name_t **name, isc_uint32_t *ttl,
613 compound_rrstream_t *s = (compound_rrstream_t *) rs;
614 rrstream_t *curstream;
615 INSIST(0 <= s->state && s->state < 3);
616 INSIST(s->result == ISC_R_SUCCESS);
617 curstream = s->components[s->state];
618 curstream->methods->current(curstream, name, ttl, rdata);
622 compound_rrstream_pause(rrstream_t *rs)
624 compound_rrstream_t *s = (compound_rrstream_t *) rs;
625 rrstream_t *curstream;
626 INSIST(0 <= s->state && s->state < 3);
627 curstream = s->components[s->state];
628 curstream->methods->pause(curstream);
632 compound_rrstream_destroy(rrstream_t **rsp) {
633 compound_rrstream_t *s = (compound_rrstream_t *) *rsp;
634 s->components[0]->methods->destroy(&s->components[0]);
635 s->components[1]->methods->destroy(&s->components[1]);
636 s->components[2] = NULL; /* Copy of components[0]. */
637 isc_mem_put(s->common.mctx, s, sizeof(*s));
640 static rrstream_methods_t compound_rrstream_methods = {
641 compound_rrstream_first,
642 compound_rrstream_next,
643 compound_rrstream_current,
644 compound_rrstream_pause,
645 compound_rrstream_destroy
648 /**************************************************************************/
650 * An 'xfrout_ctx_t' contains the state of an outgoing AXFR or IXFR
657 unsigned int id; /* ID of request */
658 dns_name_t *qname; /* Question name of request */
659 dns_rdatatype_t qtype; /* dns_rdatatype_{a,i}xfr */
660 dns_rdataclass_t qclass;
661 dns_zone_t *zone; /* (necessary for stats) */
663 dns_dbversion_t *ver;
665 rrstream_t *stream; /* The XFR RR stream */
666 isc_boolean_t end_of_stream; /* EOS has been reached */
667 isc_buffer_t buf; /* Buffer for message owner
669 isc_buffer_t txlenbuf; /* Transmit length buffer */
670 isc_buffer_t txbuf; /* Transmit message buffer */
672 unsigned int txmemlen;
673 unsigned int nmsg; /* Number of messages sent */
674 dns_tsigkey_t *tsigkey; /* Key used to create TSIG */
675 isc_buffer_t *lasttsig; /* the last TSIG */
676 isc_boolean_t many_answers;
677 int sends; /* Send in progress */
678 isc_boolean_t shuttingdown;
679 const char *mnemonic; /* Style of transfer */
683 xfrout_ctx_create(isc_mem_t *mctx, ns_client_t *client,
684 unsigned int id, dns_name_t *qname, dns_rdatatype_t qtype,
685 dns_rdataclass_t qclass, dns_zone_t *zone,
686 dns_db_t *db, dns_dbversion_t *ver, isc_quota_t *quota,
687 rrstream_t *stream, dns_tsigkey_t *tsigkey,
688 isc_buffer_t *lasttsig,
689 unsigned int maxtime,
690 unsigned int idletime,
691 isc_boolean_t many_answers,
692 xfrout_ctx_t **xfrp);
695 sendstream(xfrout_ctx_t *xfr);
698 xfrout_senddone(isc_task_t *task, isc_event_t *event);
701 xfrout_fail(xfrout_ctx_t *xfr, isc_result_t result, const char *msg);
704 xfrout_maybe_destroy(xfrout_ctx_t *xfr);
707 xfrout_ctx_destroy(xfrout_ctx_t **xfrp);
710 xfrout_client_shutdown(void *arg, isc_result_t result);
713 xfrout_log1(ns_client_t *client, dns_name_t *zonename,
714 dns_rdataclass_t rdclass, int level,
715 const char *fmt, ...) ISC_FORMAT_PRINTF(5, 6);
718 xfrout_log(xfrout_ctx_t *xfr, int level, const char *fmt, ...)
719 ISC_FORMAT_PRINTF(3, 4);
721 /**************************************************************************/
724 ns_xfr_start(ns_client_t *client, dns_rdatatype_t reqtype) {
726 dns_name_t *question_name;
727 dns_rdataset_t *question_rdataset;
728 dns_zone_t *zone = NULL;
730 dns_dbversion_t *ver = NULL;
731 dns_rdataclass_t question_class;
732 rrstream_t *soa_stream = NULL;
733 rrstream_t *data_stream = NULL;
734 rrstream_t *stream = NULL;
735 dns_difftuple_t *current_soa_tuple = NULL;
736 dns_name_t *soa_name;
737 dns_rdataset_t *soa_rdataset;
738 dns_rdata_t soa_rdata = DNS_RDATA_INIT;
739 isc_boolean_t have_soa = ISC_FALSE;
740 const char *mnemonic = NULL;
741 isc_mem_t *mctx = client->mctx;
742 dns_message_t *request = client->message;
743 xfrout_ctx_t *xfr = NULL;
744 isc_quota_t *quota = NULL;
745 dns_transfer_format_t format = client->view->transfer_format;
747 dns_peer_t *peer = NULL;
748 isc_buffer_t *tsigbuf = NULL;
750 char msg[NS_CLIENT_ACLMSGSIZE("zone transfer")];
751 char keyname[DNS_NAME_FORMATSIZE];
752 isc_boolean_t is_poll = ISC_FALSE;
753 isc_boolean_t is_dlz = ISC_FALSE;
756 case dns_rdatatype_axfr:
759 case dns_rdatatype_ixfr:
767 ns_client_log(client,
768 DNS_LOGCATEGORY_XFER_OUT, NS_LOGMODULE_XFER_OUT,
769 ISC_LOG_DEBUG(6), "%s request", mnemonic);
773 result = isc_quota_attach(&ns_g_server->xfroutquota, "a);
774 if (result != ISC_R_SUCCESS) {
775 isc_log_write(XFROUT_COMMON_LOGARGS, ISC_LOG_WARNING,
776 "%s request denied: %s", mnemonic,
777 isc_result_totext(result));
782 * Interpret the question section.
784 result = dns_message_firstname(request, DNS_SECTION_QUESTION);
785 INSIST(result == ISC_R_SUCCESS);
788 * The question section must contain exactly one question, and
789 * it must be for AXFR/IXFR as appropriate.
791 question_name = NULL;
792 dns_message_currentname(request, DNS_SECTION_QUESTION, &question_name);
793 question_rdataset = ISC_LIST_HEAD(question_name->list);
794 question_class = question_rdataset->rdclass;
795 INSIST(question_rdataset->type == reqtype);
796 if (ISC_LIST_NEXT(question_rdataset, link) != NULL)
797 FAILC(DNS_R_FORMERR, "multiple questions");
798 result = dns_message_nextname(request, DNS_SECTION_QUESTION);
799 if (result != ISC_R_NOMORE)
800 FAILC(DNS_R_FORMERR, "multiple questions");
802 result = dns_zt_find(client->view->zonetable, question_name, 0, NULL,
805 if (result != ISC_R_SUCCESS) {
807 * Normal zone table does not have a match.
808 * Try the DLZ database
810 if (client->view->dlzdatabase != NULL) {
811 result = dns_dlzallowzonexfr(client->view,
816 if (result == ISC_R_NOPERM) {
817 char _buf1[DNS_NAME_FORMATSIZE];
818 char _buf2[DNS_RDATACLASS_FORMATSIZE];
820 result = DNS_R_REFUSED;
821 dns_name_format(question_name, _buf1,
823 dns_rdataclass_format(question_class,
824 _buf2, sizeof(_buf2));
825 ns_client_log(client, DNS_LOGCATEGORY_SECURITY,
826 NS_LOGMODULE_XFER_OUT,
828 "zone transfer '%s/%s' denied",
832 if (result != ISC_R_SUCCESS)
833 FAILQ(DNS_R_NOTAUTH, "non-authoritative zone",
834 question_name, question_class);
837 * DLZ only support full zone transfer, not incremental
839 if (reqtype != dns_rdatatype_axfr) {
840 mnemonic = "AXFR-style IXFR";
841 reqtype = dns_rdatatype_axfr;
846 * not DLZ and not in normal zone table, we are
849 FAILQ(DNS_R_NOTAUTH, "non-authoritative zone",
850 question_name, question_class);
853 /* zone table has a match */
854 switch(dns_zone_gettype(zone)) {
855 case dns_zone_master:
858 break; /* Master and slave zones are OK for transfer. */
860 FAILQ(DNS_R_NOTAUTH, "non-authoritative zone", question_name, question_class);
862 CHECK(dns_zone_getdb(zone, &db));
863 dns_db_currentversion(db, &ver);
866 xfrout_log1(client, question_name, question_class, ISC_LOG_DEBUG(6),
867 "%s question section OK", mnemonic);
870 * Check the authority section. Look for a SOA record with
871 * the same name and class as the question.
873 for (result = dns_message_firstname(request, DNS_SECTION_AUTHORITY);
874 result == ISC_R_SUCCESS;
875 result = dns_message_nextname(request, DNS_SECTION_AUTHORITY))
878 dns_message_currentname(request, DNS_SECTION_AUTHORITY,
882 * Ignore data whose owner name is not the zone apex.
884 if (! dns_name_equal(soa_name, question_name))
887 for (soa_rdataset = ISC_LIST_HEAD(soa_name->list);
888 soa_rdataset != NULL;
889 soa_rdataset = ISC_LIST_NEXT(soa_rdataset, link))
892 * Ignore non-SOA data.
894 if (soa_rdataset->type != dns_rdatatype_soa)
896 if (soa_rdataset->rdclass != question_class)
899 CHECK(dns_rdataset_first(soa_rdataset));
900 dns_rdataset_current(soa_rdataset, &soa_rdata);
901 result = dns_rdataset_next(soa_rdataset);
902 if (result == ISC_R_SUCCESS)
904 "IXFR authority section "
905 "has multiple SOAs");
911 if (result != ISC_R_NOMORE)
914 xfrout_log1(client, question_name, question_class, ISC_LOG_DEBUG(6),
915 "%s authority section OK", mnemonic);
918 * If not a DLZ zone, decide whether to allow this transfer.
921 ns_client_aclmsg("zone transfer", question_name, reqtype,
922 client->view->rdclass, msg, sizeof(msg));
923 CHECK(ns_client_checkacl(client, NULL, msg,
924 dns_zone_getxfracl(zone),
925 ISC_TRUE, ISC_LOG_ERROR));
929 * AXFR over UDP is not possible.
931 if (reqtype == dns_rdatatype_axfr &&
932 (client->attributes & NS_CLIENTATTR_TCP) == 0)
933 FAILC(DNS_R_FORMERR, "attempted AXFR over UDP");
936 * Look up the requesting server in the peer table.
938 isc_netaddr_fromsockaddr(&na, &client->peeraddr);
939 (void)dns_peerlist_peerbyaddr(client->view->peers, &na, &peer);
942 * Decide on the transfer format (one-answer or many-answers).
945 (void)dns_peer_gettransferformat(peer, &format);
948 * Get a dynamically allocated copy of the current SOA.
951 dns_db_currentversion(db, &ver);
953 CHECK(dns_db_createsoatuple(db, ver, mctx, DNS_DIFFOP_EXISTS,
954 ¤t_soa_tuple));
956 if (reqtype == dns_rdatatype_ixfr) {
957 isc_uint32_t begin_serial, current_serial;
958 isc_boolean_t provide_ixfr;
961 * Outgoing IXFR may have been disabled for this peer
964 provide_ixfr = client->view->provideixfr;
966 (void) dns_peer_getprovideixfr(peer, &provide_ixfr);
967 if (provide_ixfr == ISC_FALSE)
972 "IXFR request missing SOA");
974 begin_serial = dns_soa_getserial(&soa_rdata);
975 current_serial = dns_soa_getserial(¤t_soa_tuple->rdata);
978 * RFC1995 says "If an IXFR query with the same or
979 * newer version number than that of the server
980 * is received, it is replied to with a single SOA
981 * record of the server's current version, just as
982 * in AXFR". The claim about AXFR is incorrect,
983 * but other than that, we do as the RFC says.
985 * Sending a single SOA record is also how we refuse
986 * IXFR over UDP (currently, we always do).
988 if (DNS_SERIAL_GE(begin_serial, current_serial) ||
989 (client->attributes & NS_CLIENTATTR_TCP) == 0)
991 CHECK(soa_rrstream_create(mctx, db, ver, &stream));
995 journalfile = dns_zone_getjournal(zone);
996 if (journalfile != NULL)
997 result = ixfr_rrstream_create(mctx,
1003 result = ISC_R_NOTFOUND;
1004 if (result == ISC_R_NOTFOUND ||
1005 result == ISC_R_RANGE) {
1006 xfrout_log1(client, question_name, question_class,
1008 "IXFR version not in journal, "
1009 "falling back to AXFR");
1010 mnemonic = "AXFR-style IXFR";
1016 CHECK(axfr_rrstream_create(mctx, db, ver,
1021 * Bracket the data stream with SOAs.
1023 CHECK(soa_rrstream_create(mctx, db, ver, &soa_stream));
1024 CHECK(compound_rrstream_create(mctx, &soa_stream, &data_stream,
1030 CHECK(dns_message_getquerytsig(request, mctx, &tsigbuf));
1032 * Create the xfrout context object. This transfers the ownership
1033 * of "stream", "db", "ver", and "quota" to the xfrout context object.
1039 CHECK(xfrout_ctx_create(mctx, client, request->id,
1040 question_name, reqtype, question_class,
1041 zone, db, ver, quota, stream,
1042 dns_message_gettsigkey(request),
1046 (format == dns_many_answers) ?
1047 ISC_TRUE : ISC_FALSE,
1050 CHECK(xfrout_ctx_create(mctx, client, request->id,
1051 question_name, reqtype, question_class,
1052 zone, db, ver, quota, stream,
1053 dns_message_gettsigkey(request),
1055 dns_zone_getmaxxfrout(zone),
1056 dns_zone_getidleout(zone),
1057 (format == dns_many_answers) ?
1058 ISC_TRUE : ISC_FALSE,
1061 xfr->mnemonic = mnemonic;
1065 CHECK(xfr->stream->methods->first(xfr->stream));
1067 if (xfr->tsigkey != NULL)
1068 dns_name_format(&xfr->tsigkey->name, keyname, sizeof(keyname));
1072 xfrout_log1(client, question_name, question_class,
1073 ISC_LOG_DEBUG(1), "IXFR poll up to date%s%s",
1074 (xfr->tsigkey != NULL) ? ": TSIG " : "", keyname);
1076 xfrout_log1(client, question_name, question_class,
1077 ISC_LOG_INFO, "%s started%s%s", mnemonic,
1078 (xfr->tsigkey != NULL) ? ": TSIG " : "", keyname);
1081 * Hand the context over to sendstream(). Set xfr to NULL;
1082 * sendstream() is responsible for either passing the
1083 * context on to a later event handler or destroying it.
1088 result = ISC_R_SUCCESS;
1091 if (result == DNS_R_REFUSED)
1092 inc_stats(zone, dns_nsstatscounter_xfrrej);
1094 isc_quota_detach("a);
1095 if (current_soa_tuple != NULL)
1096 dns_difftuple_free(¤t_soa_tuple);
1098 stream->methods->destroy(&stream);
1099 if (soa_stream != NULL)
1100 soa_stream->methods->destroy(&soa_stream);
1101 if (data_stream != NULL)
1102 data_stream->methods->destroy(&data_stream);
1104 dns_db_closeversion(db, &ver, ISC_FALSE);
1108 dns_zone_detach(&zone);
1111 xfrout_fail(xfr, result, "setting up zone transfer");
1112 } else if (result != ISC_R_SUCCESS) {
1113 ns_client_log(client, DNS_LOGCATEGORY_XFER_OUT,
1114 NS_LOGMODULE_XFER_OUT,
1115 ISC_LOG_DEBUG(3), "zone transfer setup failed");
1116 ns_client_error(client, result);
1121 xfrout_ctx_create(isc_mem_t *mctx, ns_client_t *client, unsigned int id,
1122 dns_name_t *qname, dns_rdatatype_t qtype,
1123 dns_rdataclass_t qclass, dns_zone_t *zone,
1124 dns_db_t *db, dns_dbversion_t *ver, isc_quota_t *quota,
1125 rrstream_t *stream, dns_tsigkey_t *tsigkey,
1126 isc_buffer_t *lasttsig, unsigned int maxtime,
1127 unsigned int idletime, isc_boolean_t many_answers,
1128 xfrout_ctx_t **xfrp)
1131 isc_result_t result;
1135 INSIST(xfrp != NULL && *xfrp == NULL);
1136 xfr = isc_mem_get(mctx, sizeof(*xfr));
1138 return (ISC_R_NOMEMORY);
1140 isc_mem_attach(mctx, &xfr->mctx);
1142 ns_client_attach(client, &xfr->client);
1146 xfr->qclass = qclass;
1150 if (zone != NULL) /* zone will be NULL if it's DLZ */
1151 dns_zone_attach(zone, &xfr->zone);
1152 dns_db_attach(db, &xfr->db);
1153 dns_db_attachversion(db, ver, &xfr->ver);
1154 xfr->end_of_stream = ISC_FALSE;
1155 xfr->tsigkey = tsigkey;
1156 xfr->lasttsig = lasttsig;
1160 xfr->many_answers = many_answers,
1162 xfr->shuttingdown = ISC_FALSE;
1163 xfr->mnemonic = NULL;
1164 xfr->buf.base = NULL;
1165 xfr->buf.length = 0;
1172 * Allocate a temporary buffer for the uncompressed response
1173 * message data. The size should be no more than 65535 bytes
1174 * so that the compressed data will fit in a TCP message,
1175 * and no less than 65535 bytes so that an almost maximum-sized
1176 * RR will fit. Note that although 65535-byte RRs are allowed
1177 * in principle, they cannot be zone-transferred (at least not
1178 * if uncompressible), because the message and RR headers would
1179 * push the size of the TCP message over the 65536 byte limit.
1182 mem = isc_mem_get(mctx, len);
1184 result = ISC_R_NOMEMORY;
1187 isc_buffer_init(&xfr->buf, mem, len);
1190 * Allocate another temporary buffer for the compressed
1191 * response message and its TCP length prefix.
1194 mem = isc_mem_get(mctx, len);
1196 result = ISC_R_NOMEMORY;
1199 isc_buffer_init(&xfr->txlenbuf, mem, 2);
1200 isc_buffer_init(&xfr->txbuf, (char *) mem + 2, len - 2);
1202 xfr->txmemlen = len;
1204 CHECK(dns_timer_setidle(xfr->client->timer,
1205 maxtime, idletime, ISC_FALSE));
1208 * Register a shutdown callback with the client, so that we
1209 * can stop the transfer immediately when the client task
1210 * gets a shutdown event.
1212 xfr->client->shutdown = xfrout_client_shutdown;
1213 xfr->client->shutdown_arg = xfr;
1215 * These MUST be after the last "goto failure;" / CHECK to
1216 * prevent a double free by the caller.
1219 xfr->stream = stream;
1222 return (ISC_R_SUCCESS);
1225 xfrout_ctx_destroy(&xfr);
1231 * Arrange to send as much as we can of "stream" without blocking.
1234 * The stream iterator is initialized and points at an RR,
1235 * or possibly at the end of the stream (that is, the
1236 * _first method of the iterator has been called).
1239 sendstream(xfrout_ctx_t *xfr) {
1240 dns_message_t *tcpmsg = NULL;
1241 dns_message_t *msg = NULL; /* Client message if UDP, tcpmsg if TCP */
1242 isc_result_t result;
1244 isc_region_t region;
1245 dns_rdataset_t *qrdataset;
1246 dns_name_t *msgname = NULL;
1247 dns_rdata_t *msgrdata = NULL;
1248 dns_rdatalist_t *msgrdl = NULL;
1249 dns_rdataset_t *msgrds = NULL;
1250 dns_compress_t cctx;
1251 isc_boolean_t cleanup_cctx = ISC_FALSE;
1255 isc_buffer_clear(&xfr->buf);
1256 isc_buffer_clear(&xfr->txlenbuf);
1257 isc_buffer_clear(&xfr->txbuf);
1259 if ((xfr->client->attributes & NS_CLIENTATTR_TCP) == 0) {
1261 * In the UDP case, we put the response data directly into
1262 * the client message.
1264 msg = xfr->client->message;
1265 CHECK(dns_message_reply(msg, ISC_TRUE));
1268 * TCP. Build a response dns_message_t, temporarily storing
1269 * the raw, uncompressed owner names and RR data contiguously
1270 * in xfr->buf. We know that if the uncompressed data fits
1271 * in xfr->buf, the compressed data will surely fit in a TCP
1275 CHECK(dns_message_create(xfr->mctx,
1276 DNS_MESSAGE_INTENTRENDER, &tcpmsg));
1280 msg->rcode = dns_rcode_noerror;
1281 msg->flags = DNS_MESSAGEFLAG_QR | DNS_MESSAGEFLAG_AA;
1282 if ((xfr->client->attributes & NS_CLIENTATTR_RA) != 0)
1283 msg->flags |= DNS_MESSAGEFLAG_RA;
1284 CHECK(dns_message_settsigkey(msg, xfr->tsigkey));
1285 CHECK(dns_message_setquerytsig(msg, xfr->lasttsig));
1286 if (xfr->lasttsig != NULL)
1287 isc_buffer_free(&xfr->lasttsig);
1290 * Include a question section in the first message only.
1291 * BIND 8.2.1 will not recognize an IXFR if it does not
1292 * have a question section.
1294 if (xfr->nmsg == 0) {
1295 dns_name_t *qname = NULL;
1299 * Reserve space for the 12-byte message header
1300 * and 4 bytes of question.
1302 isc_buffer_add(&xfr->buf, 12 + 4);
1305 result = dns_message_gettemprdataset(msg, &qrdataset);
1306 if (result != ISC_R_SUCCESS)
1308 dns_rdataset_init(qrdataset);
1309 dns_rdataset_makequestion(qrdataset,
1310 xfr->client->message->rdclass,
1313 result = dns_message_gettempname(msg, &qname);
1314 if (result != ISC_R_SUCCESS)
1316 dns_name_init(qname, NULL);
1317 isc_buffer_availableregion(&xfr->buf, &r);
1318 INSIST(r.length >= xfr->qname->length);
1319 r.length = xfr->qname->length;
1320 isc_buffer_putmem(&xfr->buf, xfr->qname->ndata,
1321 xfr->qname->length);
1322 dns_name_fromregion(qname, &r);
1323 ISC_LIST_INIT(qname->list);
1324 ISC_LIST_APPEND(qname->list, qrdataset, link);
1326 dns_message_addname(msg, qname, DNS_SECTION_QUESTION);
1329 msg->tcp_continuation = 1;
1333 * Try to fit in as many RRs as possible, unless "one-answer"
1334 * format has been requested.
1336 for (n_rrs = 0; ; n_rrs++) {
1337 dns_name_t *name = NULL;
1339 dns_rdata_t *rdata = NULL;
1349 xfr->stream->methods->current(xfr->stream,
1350 &name, &ttl, &rdata);
1351 size = name->length + 10 + rdata->length;
1352 isc_buffer_availableregion(&xfr->buf, &r);
1353 if (size >= r.length) {
1355 * RR would not fit. If there are other RRs in the
1356 * buffer, send them now and leave this RR to the
1357 * next message. If this RR overflows the buffer
1358 * all by itself, fail.
1360 * In theory some RRs might fit in a TCP message
1361 * when compressed even if they do not fit when
1362 * uncompressed, but surely we don't want
1363 * to send such monstrosities to an unsuspecting
1367 xfrout_log(xfr, ISC_LOG_WARNING,
1368 "RR too large for zone transfer "
1369 "(%d bytes)", size);
1370 /* XXX DNS_R_RRTOOLARGE? */
1371 result = ISC_R_NOSPACE;
1377 if (isc_log_wouldlog(ns_g_lctx, XFROUT_RR_LOGLEVEL))
1378 log_rr(name, rdata, ttl); /* XXX */
1380 result = dns_message_gettempname(msg, &msgname);
1381 if (result != ISC_R_SUCCESS)
1383 dns_name_init(msgname, NULL);
1384 isc_buffer_availableregion(&xfr->buf, &r);
1385 INSIST(r.length >= name->length);
1386 r.length = name->length;
1387 isc_buffer_putmem(&xfr->buf, name->ndata, name->length);
1388 dns_name_fromregion(msgname, &r);
1390 /* Reserve space for RR header. */
1391 isc_buffer_add(&xfr->buf, 10);
1393 result = dns_message_gettemprdata(msg, &msgrdata);
1394 if (result != ISC_R_SUCCESS)
1396 isc_buffer_availableregion(&xfr->buf, &r);
1397 r.length = rdata->length;
1398 isc_buffer_putmem(&xfr->buf, rdata->data, rdata->length);
1399 dns_rdata_init(msgrdata);
1400 dns_rdata_fromregion(msgrdata,
1401 rdata->rdclass, rdata->type, &r);
1403 result = dns_message_gettemprdatalist(msg, &msgrdl);
1404 if (result != ISC_R_SUCCESS)
1406 msgrdl->type = rdata->type;
1407 msgrdl->rdclass = rdata->rdclass;
1409 if (rdata->type == dns_rdatatype_sig ||
1410 rdata->type == dns_rdatatype_rrsig)
1411 msgrdl->covers = dns_rdata_covers(rdata);
1413 msgrdl->covers = dns_rdatatype_none;
1414 ISC_LINK_INIT(msgrdl, link);
1415 ISC_LIST_INIT(msgrdl->rdata);
1416 ISC_LIST_APPEND(msgrdl->rdata, msgrdata, link);
1418 result = dns_message_gettemprdataset(msg, &msgrds);
1419 if (result != ISC_R_SUCCESS)
1421 dns_rdataset_init(msgrds);
1422 result = dns_rdatalist_tordataset(msgrdl, msgrds);
1423 INSIST(result == ISC_R_SUCCESS);
1425 ISC_LIST_APPEND(msgname->list, msgrds, link);
1427 dns_message_addname(msg, msgname, DNS_SECTION_ANSWER);
1430 result = xfr->stream->methods->next(xfr->stream);
1431 if (result == ISC_R_NOMORE) {
1432 xfr->end_of_stream = ISC_TRUE;
1437 if (! xfr->many_answers)
1441 if ((xfr->client->attributes & NS_CLIENTATTR_TCP) != 0) {
1442 CHECK(dns_compress_init(&cctx, -1, xfr->mctx));
1443 dns_compress_setsensitive(&cctx, ISC_TRUE);
1444 cleanup_cctx = ISC_TRUE;
1445 CHECK(dns_message_renderbegin(msg, &cctx, &xfr->txbuf));
1446 CHECK(dns_message_rendersection(msg, DNS_SECTION_QUESTION, 0));
1447 CHECK(dns_message_rendersection(msg, DNS_SECTION_ANSWER, 0));
1448 CHECK(dns_message_renderend(msg));
1449 dns_compress_invalidate(&cctx);
1450 cleanup_cctx = ISC_FALSE;
1452 isc_buffer_usedregion(&xfr->txbuf, &used);
1453 isc_buffer_putuint16(&xfr->txlenbuf,
1454 (isc_uint16_t)used.length);
1455 region.base = xfr->txlenbuf.base;
1456 region.length = 2 + used.length;
1457 xfrout_log(xfr, ISC_LOG_DEBUG(8),
1458 "sending TCP message of %d bytes",
1460 CHECK(isc_socket_send(xfr->client->tcpsocket, /* XXX */
1461 ®ion, xfr->client->task,
1466 xfrout_log(xfr, ISC_LOG_DEBUG(8), "sending IXFR UDP response");
1467 ns_client_send(xfr->client);
1468 xfr->stream->methods->pause(xfr->stream);
1469 xfrout_ctx_destroy(&xfr);
1473 /* Advance lasttsig to be the last TSIG generated */
1474 CHECK(dns_message_getquerytsig(msg, xfr->mctx, &xfr->lasttsig));
1479 if (msgname != NULL) {
1480 if (msgrds != NULL) {
1481 if (dns_rdataset_isassociated(msgrds))
1482 dns_rdataset_disassociate(msgrds);
1483 dns_message_puttemprdataset(msg, &msgrds);
1485 if (msgrdl != NULL) {
1486 ISC_LIST_UNLINK(msgrdl->rdata, msgrdata, link);
1487 dns_message_puttemprdatalist(msg, &msgrdl);
1489 if (msgrdata != NULL)
1490 dns_message_puttemprdata(msg, &msgrdata);
1491 dns_message_puttempname(msg, &msgname);
1495 dns_message_destroy(&tcpmsg);
1498 dns_compress_invalidate(&cctx);
1500 * Make sure to release any locks held by database
1501 * iterators before returning from the event handler.
1503 xfr->stream->methods->pause(xfr->stream);
1505 if (result == ISC_R_SUCCESS)
1508 xfrout_fail(xfr, result, "sending zone data");
1512 xfrout_ctx_destroy(xfrout_ctx_t **xfrp) {
1513 xfrout_ctx_t *xfr = *xfrp;
1514 ns_client_t *client = NULL;
1516 INSIST(xfr->sends == 0);
1518 xfr->client->shutdown = NULL;
1519 xfr->client->shutdown_arg = NULL;
1521 if (xfr->stream != NULL)
1522 xfr->stream->methods->destroy(&xfr->stream);
1523 if (xfr->buf.base != NULL)
1524 isc_mem_put(xfr->mctx, xfr->buf.base, xfr->buf.length);
1525 if (xfr->txmem != NULL)
1526 isc_mem_put(xfr->mctx, xfr->txmem, xfr->txmemlen);
1527 if (xfr->lasttsig != NULL)
1528 isc_buffer_free(&xfr->lasttsig);
1529 if (xfr->quota != NULL)
1530 isc_quota_detach(&xfr->quota);
1531 if (xfr->ver != NULL)
1532 dns_db_closeversion(xfr->db, &xfr->ver, ISC_FALSE);
1533 if (xfr->zone != NULL)
1534 dns_zone_detach(&xfr->zone);
1535 if (xfr->db != NULL)
1536 dns_db_detach(&xfr->db);
1539 * We want to detch the client after we have released the memory
1540 * context as ns_client_detach checks the memory reference count.
1542 ns_client_attach(xfr->client, &client);
1543 ns_client_detach(&xfr->client);
1544 isc_mem_putanddetach(&xfr->mctx, xfr, sizeof(*xfr));
1545 ns_client_detach(&client);
1551 xfrout_senddone(isc_task_t *task, isc_event_t *event) {
1552 isc_socketevent_t *sev = (isc_socketevent_t *)event;
1553 xfrout_ctx_t *xfr = (xfrout_ctx_t *)event->ev_arg;
1554 isc_result_t evresult = sev->result;
1558 INSIST(event->ev_type == ISC_SOCKEVENT_SENDDONE);
1560 isc_event_free(&event);
1562 INSIST(xfr->sends == 0);
1564 (void)isc_timer_touch(xfr->client->timer);
1565 if (xfr->shuttingdown == ISC_TRUE) {
1566 xfrout_maybe_destroy(xfr);
1567 } else if (evresult != ISC_R_SUCCESS) {
1568 xfrout_fail(xfr, evresult, "send");
1569 } else if (xfr->end_of_stream == ISC_FALSE) {
1572 /* End of zone transfer stream. */
1573 inc_stats(xfr->zone, dns_nsstatscounter_xfrdone);
1574 xfrout_log(xfr, ISC_LOG_INFO, "%s ended", xfr->mnemonic);
1575 ns_client_next(xfr->client, ISC_R_SUCCESS);
1576 xfrout_ctx_destroy(&xfr);
1581 xfrout_fail(xfrout_ctx_t *xfr, isc_result_t result, const char *msg) {
1582 xfr->shuttingdown = ISC_TRUE;
1583 xfrout_log(xfr, ISC_LOG_ERROR, "%s: %s",
1584 msg, isc_result_totext(result));
1585 xfrout_maybe_destroy(xfr);
1589 xfrout_maybe_destroy(xfrout_ctx_t *xfr) {
1590 INSIST(xfr->shuttingdown == ISC_TRUE);
1591 if (xfr->sends > 0) {
1593 * If we are currently sending, cancel it and wait for
1594 * cancel event before destroying the context.
1596 isc_socket_cancel(xfr->client->tcpsocket, xfr->client->task,
1597 ISC_SOCKCANCEL_SEND);
1599 ns_client_next(xfr->client, ISC_R_CANCELED);
1600 xfrout_ctx_destroy(&xfr);
1605 xfrout_client_shutdown(void *arg, isc_result_t result) {
1606 xfrout_ctx_t *xfr = (xfrout_ctx_t *) arg;
1607 xfrout_fail(xfr, result, "aborted");
1611 * Log outgoing zone transfer messages in a format like
1612 * <client>: transfer of <zone>: <message>
1616 xfrout_logv(ns_client_t *client, dns_name_t *zonename,
1617 dns_rdataclass_t rdclass, int level, const char *fmt, va_list ap)
1618 ISC_FORMAT_PRINTF(5, 0);
1621 xfrout_logv(ns_client_t *client, dns_name_t *zonename,
1622 dns_rdataclass_t rdclass, int level, const char *fmt, va_list ap)
1625 char namebuf[DNS_NAME_FORMATSIZE];
1626 char classbuf[DNS_RDATACLASS_FORMATSIZE];
1628 dns_name_format(zonename, namebuf, sizeof(namebuf));
1629 dns_rdataclass_format(rdclass, classbuf, sizeof(classbuf));
1630 vsnprintf(msgbuf, sizeof(msgbuf), fmt, ap);
1631 ns_client_log(client, DNS_LOGCATEGORY_XFER_OUT,
1632 NS_LOGMODULE_XFER_OUT, level,
1633 "transfer of '%s/%s': %s", namebuf, classbuf, msgbuf);
1637 * Logging function for use when a xfrout_ctx_t has not yet been created.
1640 xfrout_log1(ns_client_t *client, dns_name_t *zonename,
1641 dns_rdataclass_t rdclass, int level, const char *fmt, ...) {
1644 xfrout_logv(client, zonename, rdclass, level, fmt, ap);
1649 * Logging function for use when there is a xfrout_ctx_t.
1652 xfrout_log(xfrout_ctx_t *xfr, int level, const char *fmt, ...) {
1655 xfrout_logv(xfr->client, xfr->qname, xfr->qclass, level, fmt, ap);