From ba8f85b49c38af7bc2a9acdef5dcde2de008d25e Mon Sep 17 00:00:00 2001
From: peter <peter@FreeBSD.org>
Date: Sat, 12 Jul 2008 05:00:28 +0000
Subject: Flatten bind9 vendor work area
---
lib/dns/masterdump.c | 1738 ++++++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 1738 insertions(+)
create mode 100644 lib/dns/masterdump.c
(limited to 'lib/dns/masterdump.c')
diff --git a/lib/dns/masterdump.c b/lib/dns/masterdump.c
new file mode 100644
index 0000000..03716e2
--- /dev/null
+++ b/lib/dns/masterdump.c
@@ -0,0 +1,1738 @@
+/*
+ * Copyright (C) 2004-2006 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: masterdump.c,v 1.73.18.14 2006/08/08 06:39:36 marka Exp $ */
+
+/*! \file */
+
+#include <config.h>
+
+#include <stdlib.h>
+
+#include <isc/event.h>
+#include <isc/file.h>
+#include <isc/magic.h>
+#include <isc/mem.h>
+#include <isc/print.h>
+#include <isc/stdio.h>
+#include <isc/string.h>
+#include <isc/task.h>
+#include <isc/time.h>
+#include <isc/util.h>
+
+#include <dns/db.h>
+#include <dns/dbiterator.h>
+#include <dns/events.h>
+#include <dns/fixedname.h>
+#include <dns/lib.h>
+#include <dns/log.h>
+#include <dns/master.h>
+#include <dns/masterdump.h>
+#include <dns/rdata.h>
+#include <dns/rdataclass.h>
+#include <dns/rdataset.h>
+#include <dns/rdatasetiter.h>
+#include <dns/rdatatype.h>
+#include <dns/result.h>
+#include <dns/time.h>
+#include <dns/ttl.h>
+
+#define DNS_DCTX_MAGIC ISC_MAGIC('D', 'c', 't', 'x')
+#define DNS_DCTX_VALID(d) ISC_MAGIC_VALID(d, DNS_DCTX_MAGIC)
+
+#define RETERR(x) do { \
+ isc_result_t _r = (x); \
+ if (_r != ISC_R_SUCCESS) \
+ return (_r); \
+ } while (0)
+
+struct dns_master_style {
+ unsigned int flags; /* DNS_STYLEFLAG_* */
+ unsigned int ttl_column;
+ unsigned int class_column;
+ unsigned int type_column;
+ unsigned int rdata_column;
+ unsigned int line_length;
+ unsigned int tab_width;
+};
+
+/*%
+ * The maximum length of the newline+indentation that is output
+ * when inserting a line break in an RR. This effectively puts an
+ * upper limits on the value of "rdata_column", because if it is
+ * very large, the tabs and spaces needed to reach it will not fit.
+ */
+#define DNS_TOTEXT_LINEBREAK_MAXLEN 100
+
+/*%
+ * Context structure for a masterfile dump in progress.
+ */
+typedef struct dns_totext_ctx {
+ dns_master_style_t style;
+ isc_boolean_t class_printed;
+ char * linebreak;
+ char linebreak_buf[DNS_TOTEXT_LINEBREAK_MAXLEN];
+ dns_name_t * origin;
+ dns_name_t * neworigin;
+ dns_fixedname_t origin_fixname;
+ isc_uint32_t current_ttl;
+ isc_boolean_t current_ttl_valid;
+} dns_totext_ctx_t;
+
+LIBDNS_EXTERNAL_DATA const dns_master_style_t
+dns_master_style_default = {
+ DNS_STYLEFLAG_OMIT_OWNER |
+ DNS_STYLEFLAG_OMIT_CLASS |
+ DNS_STYLEFLAG_REL_OWNER |
+ DNS_STYLEFLAG_REL_DATA |
+ DNS_STYLEFLAG_OMIT_TTL |
+ DNS_STYLEFLAG_TTL |
+ DNS_STYLEFLAG_COMMENT |
+ DNS_STYLEFLAG_MULTILINE,
+ 24, 24, 24, 32, 80, 8
+};
+
+LIBDNS_EXTERNAL_DATA const dns_master_style_t
+dns_master_style_full = {
+ DNS_STYLEFLAG_COMMENT,
+ 46, 46, 46, 64, 120, 8
+};
+
+LIBDNS_EXTERNAL_DATA const dns_master_style_t
+dns_master_style_explicitttl = {
+ DNS_STYLEFLAG_OMIT_OWNER |
+ DNS_STYLEFLAG_OMIT_CLASS |
+ DNS_STYLEFLAG_REL_OWNER |
+ DNS_STYLEFLAG_REL_DATA |
+ DNS_STYLEFLAG_COMMENT |
+ DNS_STYLEFLAG_MULTILINE,
+ 24, 32, 32, 40, 80, 8
+};
+
+LIBDNS_EXTERNAL_DATA const dns_master_style_t
+dns_master_style_cache = {
+ DNS_STYLEFLAG_OMIT_OWNER |
+ DNS_STYLEFLAG_OMIT_CLASS |
+ DNS_STYLEFLAG_MULTILINE |
+ DNS_STYLEFLAG_TRUST |
+ DNS_STYLEFLAG_NCACHE,
+ 24, 32, 32, 40, 80, 8
+};
+
+LIBDNS_EXTERNAL_DATA const dns_master_style_t
+dns_master_style_simple = {
+ 0,
+ 24, 32, 32, 40, 80, 8
+};
+
+/*%
+ * A style suitable for dns_rdataset_totext().
+ */
+LIBDNS_EXTERNAL_DATA const dns_master_style_t
+dns_master_style_debug = {
+ DNS_STYLEFLAG_REL_OWNER,
+ 24, 32, 40, 48, 80, 8
+};
+
+
+#define N_SPACES 10
+static char spaces[N_SPACES+1] = " ";
+
+#define N_TABS 10
+static char tabs[N_TABS+1] = "\t\t\t\t\t\t\t\t\t\t";
+
+struct dns_dumpctx {
+ unsigned int magic;
+ isc_mem_t *mctx;
+ isc_mutex_t lock;
+ unsigned int references;
+ isc_boolean_t canceled;
+ isc_boolean_t first;
+ isc_boolean_t do_date;
+ isc_stdtime_t now;
+ FILE *f;
+ dns_db_t *db;
+ dns_dbversion_t *version;
+ dns_dbiterator_t *dbiter;
+ dns_totext_ctx_t tctx;
+ isc_task_t *task;
+ dns_dumpdonefunc_t done;
+ void *done_arg;
+ unsigned int nodes;
+ /* dns_master_dumpinc() */
+ char *file;
+ char *tmpfile;
+ dns_masterformat_t format;
+ isc_result_t (*dumpsets)(isc_mem_t *mctx, dns_name_t *name,
+ dns_rdatasetiter_t *rdsiter,
+ dns_totext_ctx_t *ctx,
+ isc_buffer_t *buffer, FILE *f);
+};
+
+#define NXDOMAIN(x) (((x)->attributes & DNS_RDATASETATTR_NXDOMAIN) != 0)
+
+/*%
+ * Output tabs and spaces to go from column '*current' to
+ * column 'to', and update '*current' to reflect the new
+ * current column.
+ */
+static isc_result_t
+indent(unsigned int *current, unsigned int to, int tabwidth,
+ isc_buffer_t *target)
+{
+ isc_region_t r;
+ unsigned char *p;
+ unsigned int from;
+ int ntabs, nspaces, t;
+
+ from = *current;
+
+ if (to < from + 1)
+ to = from + 1;
+
+ ntabs = to / tabwidth - from / tabwidth;
+ if (ntabs < 0)
+ ntabs = 0;
+
+ if (ntabs > 0) {
+ isc_buffer_availableregion(target, &r);
+ if (r.length < (unsigned) ntabs)
+ return (ISC_R_NOSPACE);
+ p = r.base;
+
+ t = ntabs;
+ while (t) {
+ int n = t;
+ if (n > N_TABS)
+ n = N_TABS;
+ memcpy(p, tabs, n);
+ p += n;
+ t -= n;
+ }
+ isc_buffer_add(target, ntabs);
+ from = (to / tabwidth) * tabwidth;
+ }
+
+ nspaces = to - from;
+ INSIST(nspaces >= 0);
+
+ isc_buffer_availableregion(target, &r);
+ if (r.length < (unsigned) nspaces)
+ return (ISC_R_NOSPACE);
+ p = r.base;
+
+ t = nspaces;
+ while (t) {
+ int n = t;
+ if (n > N_SPACES)
+ n = N_SPACES;
+ memcpy(p, spaces, n);
+ p += n;
+ t -= n;
+ }
+ isc_buffer_add(target, nspaces);
+
+ *current = to;
+ return (ISC_R_SUCCESS);
+}
+
+static isc_result_t
+totext_ctx_init(const dns_master_style_t *style, dns_totext_ctx_t *ctx) {
+ isc_result_t result;
+
+ REQUIRE(style->tab_width != 0);
+
+ ctx->style = *style;
+ ctx->class_printed = ISC_FALSE;
+
+ dns_fixedname_init(&ctx->origin_fixname);
+
+ /*
+ * Set up the line break string if needed.
+ */
+ if ((ctx->style.flags & DNS_STYLEFLAG_MULTILINE) != 0) {
+ isc_buffer_t buf;
+ isc_region_t r;
+ unsigned int col = 0;
+
+ isc_buffer_init(&buf, ctx->linebreak_buf,
+ sizeof(ctx->linebreak_buf));
+
+ isc_buffer_availableregion(&buf, &r);
+ if (r.length < 1)
+ return (DNS_R_TEXTTOOLONG);
+ r.base[0] = '\n';
+ isc_buffer_add(&buf, 1);
+
+ result = indent(&col, ctx->style.rdata_column,
+ ctx->style.tab_width, &buf);
+ /*
+ * Do not return ISC_R_NOSPACE if the line break string
+ * buffer is too small, because that would just make
+ * dump_rdataset() retry indenfinitely with ever
+ * bigger target buffers. That's a different buffer,
+ * so it won't help. Use DNS_R_TEXTTOOLONG as a substitute.
+ */
+ if (result == ISC_R_NOSPACE)
+ return (DNS_R_TEXTTOOLONG);
+ if (result != ISC_R_SUCCESS)
+ return (result);
+
+ isc_buffer_availableregion(&buf, &r);
+ if (r.length < 1)
+ return (DNS_R_TEXTTOOLONG);
+ r.base[0] = '\0';
+ isc_buffer_add(&buf, 1);
+ ctx->linebreak = ctx->linebreak_buf;
+ } else {
+ ctx->linebreak = NULL;
+ }
+
+ ctx->origin = NULL;
+ ctx->neworigin = NULL;
+ ctx->current_ttl = 0;
+ ctx->current_ttl_valid = ISC_FALSE;
+
+ return (ISC_R_SUCCESS);
+}
+
+#define INDENT_TO(col) \
+ do { \
+ if ((result = indent(&column, ctx->style.col, \
+ ctx->style.tab_width, target)) \
+ != ISC_R_SUCCESS) \
+ return (result); \
+ } while (0)
+
+
+static isc_result_t
+str_totext(const char *source, isc_buffer_t *target) {
+ unsigned int l;
+ isc_region_t region;
+
+ isc_buffer_availableregion(target, ®ion);
+ l = strlen(source);
+
+ if (l > region.length)
+ return (ISC_R_NOSPACE);
+
+ memcpy(region.base, source, l);
+ isc_buffer_add(target, l);
+ return (ISC_R_SUCCESS);
+}
+
+/*
+ * Convert 'rdataset' to master file text format according to 'ctx',
+ * storing the result in 'target'. If 'owner_name' is NULL, it
+ * is omitted; otherwise 'owner_name' must be valid and have at least
+ * one label.
+ */
+
+static isc_result_t
+rdataset_totext(dns_rdataset_t *rdataset,
+ dns_name_t *owner_name,
+ dns_totext_ctx_t *ctx,
+ isc_boolean_t omit_final_dot,
+ isc_buffer_t *target)
+{
+ isc_result_t result;
+ unsigned int column;
+ isc_boolean_t first = ISC_TRUE;
+ isc_uint32_t current_ttl;
+ isc_boolean_t current_ttl_valid;
+ dns_rdatatype_t type;
+
+ REQUIRE(DNS_RDATASET_VALID(rdataset));
+
+ rdataset->attributes |= DNS_RDATASETATTR_LOADORDER;
+ result = dns_rdataset_first(rdataset);
+ REQUIRE(result == ISC_R_SUCCESS);
+
+ current_ttl = ctx->current_ttl;
+ current_ttl_valid = ctx->current_ttl_valid;
+
+ do {
+ column = 0;
+
+ /*
+ * Owner name.
+ */
+ if (owner_name != NULL &&
+ ! ((ctx->style.flags & DNS_STYLEFLAG_OMIT_OWNER) != 0 &&
+ !first))
+ {
+ unsigned int name_start = target->used;
+ RETERR(dns_name_totext(owner_name,
+ omit_final_dot,
+ target));
+ column += target->used - name_start;
+ }
+
+ /*
+ * TTL.
+ */
+ if ((ctx->style.flags & DNS_STYLEFLAG_NO_TTL) == 0 &&
+ !((ctx->style.flags & DNS_STYLEFLAG_OMIT_TTL) != 0 &&
+ current_ttl_valid &&
+ rdataset->ttl == current_ttl))
+ {
+ char ttlbuf[64];
+ isc_region_t r;
+ unsigned int length;
+
+ INDENT_TO(ttl_column);
+ length = snprintf(ttlbuf, sizeof(ttlbuf), "%u",
+ rdataset->ttl);
+ INSIST(length <= sizeof(ttlbuf));
+ isc_buffer_availableregion(target, &r);
+ if (r.length < length)
+ return (ISC_R_NOSPACE);
+ memcpy(r.base, ttlbuf, length);
+ isc_buffer_add(target, length);
+ column += length;
+
+ /*
+ * If the $TTL directive is not in use, the TTL we
+ * just printed becomes the default for subsequent RRs.
+ */
+ if ((ctx->style.flags & DNS_STYLEFLAG_TTL) == 0) {
+ current_ttl = rdataset->ttl;
+ current_ttl_valid = ISC_TRUE;
+ }
+ }
+
+ /*
+ * Class.
+ */
+ if ((ctx->style.flags & DNS_STYLEFLAG_NO_CLASS) == 0 &&
+ ((ctx->style.flags & DNS_STYLEFLAG_OMIT_CLASS) == 0 ||
+ ctx->class_printed == ISC_FALSE))
+ {
+ unsigned int class_start;
+ INDENT_TO(class_column);
+ class_start = target->used;
+ result = dns_rdataclass_totext(rdataset->rdclass,
+ target);
+ if (result != ISC_R_SUCCESS)
+ return (result);
+ column += (target->used - class_start);
+ }
+
+ /*
+ * Type.
+ */
+
+ if (rdataset->type == 0) {
+ type = rdataset->covers;
+ } else {
+ type = rdataset->type;
+ }
+
+ {
+ unsigned int type_start;
+ INDENT_TO(type_column);
+ type_start = target->used;
+ if (rdataset->type == 0)
+ RETERR(str_totext("\\-", target));
+ result = dns_rdatatype_totext(type, target);
+ if (result != ISC_R_SUCCESS)
+ return (result);
+ column += (target->used - type_start);
+ }
+
+ /*
+ * Rdata.
+ */
+ INDENT_TO(rdata_column);
+ if (rdataset->type == 0) {
+ if (NXDOMAIN(rdataset))
+ RETERR(str_totext(";-$NXDOMAIN\n", target));
+ else
+ RETERR(str_totext(";-$NXRRSET\n", target));
+ } else {
+ dns_rdata_t rdata = DNS_RDATA_INIT;
+ isc_region_t r;
+
+ dns_rdataset_current(rdataset, &rdata);
+
+ RETERR(dns_rdata_tofmttext(&rdata,
+ ctx->origin,
+ ctx->style.flags,
+ ctx->style.line_length -
+ ctx->style.rdata_column,
+ ctx->linebreak,
+ target));
+
+ isc_buffer_availableregion(target, &r);
+ if (r.length < 1)
+ return (ISC_R_NOSPACE);
+ r.base[0] = '\n';
+ isc_buffer_add(target, 1);
+ }
+
+ first = ISC_FALSE;
+ result = dns_rdataset_next(rdataset);
+ } while (result == ISC_R_SUCCESS);
+
+ if (result != ISC_R_NOMORE)
+ return (result);
+
+ /*
+ * Update the ctx state to reflect what we just printed.
+ * This is done last, only when we are sure we will return
+ * success, because this function may be called multiple
+ * times with increasing buffer sizes until it succeeds,
+ * and failed attempts must not update the state prematurely.
+ */
+ ctx->class_printed = ISC_TRUE;
+ ctx->current_ttl= current_ttl;
+ ctx->current_ttl_valid = current_ttl_valid;
+
+ return (ISC_R_SUCCESS);
+}
+
+/*
+ * Print the name, type, and class of an empty rdataset,
+ * such as those used to represent the question section
+ * of a DNS message.
+ */
+static isc_result_t
+question_totext(dns_rdataset_t *rdataset,
+ dns_name_t *owner_name,
+ dns_totext_ctx_t *ctx,
+ isc_boolean_t omit_final_dot,
+ isc_buffer_t *target)
+{
+ unsigned int column;
+ isc_result_t result;
+ isc_region_t r;
+
+ REQUIRE(DNS_RDATASET_VALID(rdataset));
+ result = dns_rdataset_first(rdataset);
+ REQUIRE(result == ISC_R_NOMORE);
+
+ column = 0;
+
+ /* Owner name */
+ {
+ unsigned int name_start = target->used;
+ RETERR(dns_name_totext(owner_name,
+ omit_final_dot,
+ target));
+ column += target->used - name_start;
+ }
+
+ /* Class */
+ {
+ unsigned int class_start;
+ INDENT_TO(class_column);
+ class_start = target->used;
+ result = dns_rdataclass_totext(rdataset->rdclass, target);
+ if (result != ISC_R_SUCCESS)
+ return (result);
+ column += (target->used - class_start);
+ }
+
+ /* Type */
+ {
+ unsigned int type_start;
+ INDENT_TO(type_column);
+ type_start = target->used;
+ result = dns_rdatatype_totext(rdataset->type, target);
+ if (result != ISC_R_SUCCESS)
+ return (result);
+ column += (target->used - type_start);
+ }
+
+ isc_buffer_availableregion(target, &r);
+ if (r.length < 1)
+ return (ISC_R_NOSPACE);
+ r.base[0] = '\n';
+ isc_buffer_add(target, 1);
+
+ return (ISC_R_SUCCESS);
+}
+
+isc_result_t
+dns_rdataset_totext(dns_rdataset_t *rdataset,
+ dns_name_t *owner_name,
+ isc_boolean_t omit_final_dot,
+ isc_boolean_t question,
+ isc_buffer_t *target)
+{
+ dns_totext_ctx_t ctx;
+ isc_result_t result;
+ result = totext_ctx_init(&dns_master_style_debug, &ctx);
+ if (result != ISC_R_SUCCESS) {
+ UNEXPECTED_ERROR(__FILE__, __LINE__,
+ "could not set master file style");
+ return (ISC_R_UNEXPECTED);
+ }
+
+ /*
+ * The caller might want to give us an empty owner
+ * name (e.g. if they are outputting into a master
+ * file and this rdataset has the same name as the
+ * previous one.)
+ */
+ if (dns_name_countlabels(owner_name) == 0)
+ owner_name = NULL;
+
+ if (question)
+ return (question_totext(rdataset, owner_name, &ctx,
+ omit_final_dot, target));
+ else
+ return (rdataset_totext(rdataset, owner_name, &ctx,
+ omit_final_dot, target));
+}
+
+isc_result_t
+dns_master_rdatasettotext(dns_name_t *owner_name,
+ dns_rdataset_t *rdataset,
+ const dns_master_style_t *style,
+ isc_buffer_t *target)
+{
+ dns_totext_ctx_t ctx;
+ isc_result_t result;
+ result = totext_ctx_init(style, &ctx);
+ if (result != ISC_R_SUCCESS) {
+ UNEXPECTED_ERROR(__FILE__, __LINE__,
+ "could not set master file style");
+ return (ISC_R_UNEXPECTED);
+ }
+
+ return (rdataset_totext(rdataset, owner_name, &ctx,
+ ISC_FALSE, target));
+}
+
+isc_result_t
+dns_master_questiontotext(dns_name_t *owner_name,
+ dns_rdataset_t *rdataset,
+ const dns_master_style_t *style,
+ isc_buffer_t *target)
+{
+ dns_totext_ctx_t ctx;
+ isc_result_t result;
+ result = totext_ctx_init(style, &ctx);
+ if (result != ISC_R_SUCCESS) {
+ UNEXPECTED_ERROR(__FILE__, __LINE__,
+ "could not set master file style");
+ return (ISC_R_UNEXPECTED);
+ }
+
+ return (question_totext(rdataset, owner_name, &ctx,
+ ISC_FALSE, target));
+}
+
+/*
+ * Print an rdataset. 'buffer' is a scratch buffer, which must have been
+ * dynamically allocated by the caller. It must be large enough to
+ * hold the result from dns_ttl_totext(). If more than that is needed,
+ * the buffer will be grown automatically.
+ */
+
+static isc_result_t
+dump_rdataset(isc_mem_t *mctx, dns_name_t *name, dns_rdataset_t *rdataset,
+ dns_totext_ctx_t *ctx,
+ isc_buffer_t *buffer, FILE *f)
+{
+ isc_region_t r;
+ isc_result_t result;
+
+ REQUIRE(buffer->length > 0);
+
+ /*
+ * Output a $TTL directive if needed.
+ */
+
+ if ((ctx->style.flags & DNS_STYLEFLAG_TTL) != 0) {
+ if (ctx->current_ttl_valid == ISC_FALSE ||
+ ctx->current_ttl != rdataset->ttl)
+ {
+ if ((ctx->style.flags & DNS_STYLEFLAG_COMMENT) != 0)
+ {
+ isc_buffer_clear(buffer);
+ result = dns_ttl_totext(rdataset->ttl,
+ ISC_TRUE, buffer);
+ INSIST(result == ISC_R_SUCCESS);
+ isc_buffer_usedregion(buffer, &r);
+ fprintf(f, "$TTL %u\t; %.*s\n", rdataset->ttl,
+ (int) r.length, (char *) r.base);
+ } else {
+ fprintf(f, "$TTL %u\n", rdataset->ttl);
+ }
+ ctx->current_ttl = rdataset->ttl;
+ ctx->current_ttl_valid = ISC_TRUE;
+ }
+ }
+
+ isc_buffer_clear(buffer);
+
+ /*
+ * Generate the text representation of the rdataset into
+ * the buffer. If the buffer is too small, grow it.
+ */
+ for (;;) {
+ int newlength;
+ void *newmem;
+ result = rdataset_totext(rdataset, name, ctx,
+ ISC_FALSE, buffer);
+ if (result != ISC_R_NOSPACE)
+ break;
+
+ newlength = buffer->length * 2;
+ newmem = isc_mem_get(mctx, newlength);
+ if (newmem == NULL)
+ return (ISC_R_NOMEMORY);
+ isc_mem_put(mctx, buffer->base, buffer->length);
+ isc_buffer_init(buffer, newmem, newlength);
+ }
+ if (result != ISC_R_SUCCESS)
+ return (result);
+
+ /*
+ * Write the buffer contents to the master file.
+ */
+ isc_buffer_usedregion(buffer, &r);
+ result = isc_stdio_write(r.base, 1, (size_t)r.length, f, NULL);
+
+ if (result != ISC_R_SUCCESS) {
+ UNEXPECTED_ERROR(__FILE__, __LINE__,
+ "master file write failed: %s",
+ isc_result_totext(result));
+ return (result);
+ }
+
+ return (ISC_R_SUCCESS);
+}
+
+/*
+ * Define the order in which rdatasets should be printed in zone
+ * files. We will print SOA and NS records before others, SIGs
+ * immediately following the things they sign, and order everything
+ * else by RR number. This is all just for aesthetics and
+ * compatibility with buggy software that expects the SOA to be first;
+ * the DNS specifications allow any order.
+ */
+
+static int
+dump_order(const dns_rdataset_t *rds) {
+ int t;
+ int sig;
+ if (rds->type == dns_rdatatype_rrsig) {
+ t = rds->covers;
+ sig = 1;
+ } else {
+ t = rds->type;
+ sig = 0;
+ }
+ switch (t) {
+ case dns_rdatatype_soa:
+ t = 0;
+ break;
+ case dns_rdatatype_ns:
+ t = 1;
+ break;
+ default:
+ t += 2;
+ break;
+ }
+ return (t << 1) + sig;
+}
+
+static int
+dump_order_compare(const void *a, const void *b) {
+ return (dump_order(*((const dns_rdataset_t * const *) a)) -
+ dump_order(*((const dns_rdataset_t * const *) b)));
+}
+
+/*
+ * Dump all the rdatasets of a domain name to a master file. We make
+ * a "best effort" attempt to sort the RRsets in a nice order, but if
+ * there are more than MAXSORT RRsets, we punt and only sort them in
+ * groups of MAXSORT. This is not expected to ever happen in practice
+ * since much less than 64 RR types have been registered with the
+ * IANA, so far, and the output will be correct (though not
+ * aesthetically pleasing) even if it does happen.
+ */
+
+#define MAXSORT 64
+
+static const char *trustnames[] = {
+ "none",
+ "pending",
+ "additional",
+ "glue",
+ "answer",
+ "authauthority",
+ "authanswer",
+ "secure",
+ "local" /* aka ultimate */
+};
+
+static isc_result_t
+dump_rdatasets_text(isc_mem_t *mctx, dns_name_t *name,
+ dns_rdatasetiter_t *rdsiter, dns_totext_ctx_t *ctx,
+ isc_buffer_t *buffer, FILE *f)
+{
+ isc_result_t itresult, dumpresult;
+ isc_region_t r;
+ dns_rdataset_t rdatasets[MAXSORT];
+ dns_rdataset_t *sorted[MAXSORT];
+ int i, n;
+
+ itresult = dns_rdatasetiter_first(rdsiter);
+ dumpresult = ISC_R_SUCCESS;
+
+ if (itresult == ISC_R_SUCCESS && ctx->neworigin != NULL) {
+ isc_buffer_clear(buffer);
+ itresult = dns_name_totext(ctx->neworigin, ISC_FALSE, buffer);
+ RUNTIME_CHECK(itresult == ISC_R_SUCCESS);
+ isc_buffer_usedregion(buffer, &r);
+ fprintf(f, "$ORIGIN %.*s\n", (int) r.length, (char *) r.base);
+ ctx->neworigin = NULL;
+ }
+
+ again:
+ for (i = 0;
+ itresult == ISC_R_SUCCESS && i < MAXSORT;
+ itresult = dns_rdatasetiter_next(rdsiter), i++) {
+ dns_rdataset_init(&rdatasets[i]);
+ dns_rdatasetiter_current(rdsiter, &rdatasets[i]);
+ sorted[i] = &rdatasets[i];
+ }
+ n = i;
+ INSIST(n <= MAXSORT);
+
+ qsort(sorted, n, sizeof(sorted[0]), dump_order_compare);
+
+ for (i = 0; i < n; i++) {
+ dns_rdataset_t *rds = sorted[i];
+ if (ctx->style.flags & DNS_STYLEFLAG_TRUST) {
+ unsigned int trust = rds->trust;
+ INSIST(trust < (sizeof(trustnames) /
+ sizeof(trustnames[0])));
+ fprintf(f, "; %s\n", trustnames[trust]);
+ }
+ if (rds->type == 0 &&
+ (ctx->style.flags & DNS_STYLEFLAG_NCACHE) == 0) {
+ /* Omit negative cache entries */
+ } else {
+ isc_result_t result =
+ dump_rdataset(mctx, name, rds, ctx,
+ buffer, f);
+ if (result != ISC_R_SUCCESS)
+ dumpresult = result;
+ if ((ctx->style.flags & DNS_STYLEFLAG_OMIT_OWNER) != 0)
+ name = NULL;
+ }
+ dns_rdataset_disassociate(rds);
+ }
+
+ if (dumpresult != ISC_R_SUCCESS)
+ return (dumpresult);
+
+ /*
+ * If we got more data than could be sorted at once,
+ * go handle the rest.
+ */
+ if (itresult == ISC_R_SUCCESS)
+ goto again;
+
+ if (itresult == ISC_R_NOMORE)
+ itresult = ISC_R_SUCCESS;
+
+ return (itresult);
+}
+
+/*
+ * Dump given RRsets in the "raw" format.
+ */
+static isc_result_t
+dump_rdataset_raw(isc_mem_t *mctx, dns_name_t *name, dns_rdataset_t *rdataset,
+ isc_buffer_t *buffer, FILE *f)
+{
+ isc_result_t result;
+ isc_uint32_t totallen;
+ isc_uint16_t dlen;
+ isc_region_t r, r_hdr;
+
+ REQUIRE(buffer->length > 0);
+ REQUIRE(DNS_RDATASET_VALID(rdataset));
+
+ restart:
+ totallen = 0;
+ result = dns_rdataset_first(rdataset);
+ REQUIRE(result == ISC_R_SUCCESS);
+
+ isc_buffer_clear(buffer);
+
+ /*
+ * Common header and owner name (length followed by name)
+ * These fields should be in a moderate length, so we assume we
+ * can store all of them in the initial buffer.
+ */
+ isc_buffer_availableregion(buffer, &r_hdr);
+ INSIST(r_hdr.length >= sizeof(dns_masterrawrdataset_t));
+ isc_buffer_putuint32(buffer, totallen); /* XXX: leave space */
+ isc_buffer_putuint16(buffer, rdataset->rdclass); /* 16-bit class */
+ isc_buffer_putuint16(buffer, rdataset->type); /* 16-bit type */
+ isc_buffer_putuint16(buffer, rdataset->covers); /* same as type */
+ isc_buffer_putuint32(buffer, rdataset->ttl); /* 32-bit TTL */
+ isc_buffer_putuint32(buffer, dns_rdataset_count(rdataset));
+ totallen = isc_buffer_usedlength(buffer);
+ INSIST(totallen <= sizeof(dns_masterrawrdataset_t));
+
+ dns_name_toregion(name, &r);
+ INSIST(isc_buffer_availablelength(buffer) >=
+ (sizeof(dlen) + r.length));
+ dlen = (isc_uint16_t)r.length;
+ isc_buffer_putuint16(buffer, dlen);
+ isc_buffer_copyregion(buffer, &r);
+ totallen += sizeof(dlen) + r.length;
+
+ do {
+ dns_rdata_t rdata = DNS_RDATA_INIT;
+ isc_region_t r;
+
+ dns_rdataset_current(rdataset, &rdata);
+ dns_rdata_toregion(&rdata, &r);
+ INSIST(r.length <= 0xffffU);
+ dlen = (isc_uint16_t)r.length;
+
+ /*
+ * Copy the rdata into the buffer. If the buffer is too small,
+ * grow it. This should be rare, so we'll simply restart the
+ * entire procedure (or should we copy the old data and
+ * continue?).
+ */
+ if (isc_buffer_availablelength(buffer) <
+ sizeof(dlen) + r.length) {
+ int newlength;
+ void *newmem;
+
+ newlength = buffer->length * 2;
+ newmem = isc_mem_get(mctx, newlength);
+ if (newmem == NULL)
+ return (ISC_R_NOMEMORY);
+ isc_mem_put(mctx, buffer->base, buffer->length);
+ isc_buffer_init(buffer, newmem, newlength);
+ goto restart;
+ }
+ isc_buffer_putuint16(buffer, dlen);
+ isc_buffer_copyregion(buffer, &r);
+ totallen += sizeof(dlen) + r.length;
+
+ result = dns_rdataset_next(rdataset);
+ } while (result == ISC_R_SUCCESS);
+
+ if (result != ISC_R_NOMORE)
+ return (result);
+
+ /*
+ * Fill in the total length field.
+ * XXX: this is a bit tricky. Since we have already "used" the space
+ * for the total length in the buffer, we first remember the entire
+ * buffer length in the region, "rewind", and then write the value.
+ */
+ isc_buffer_usedregion(buffer, &r);
+ isc_buffer_clear(buffer);
+ isc_buffer_putuint32(buffer, totallen);
+ INSIST(isc_buffer_usedlength(buffer) < totallen);
+
+ /*
+ * Write the buffer contents to the raw master file.
+ */
+ result = isc_stdio_write(r.base, 1, (size_t)r.length, f, NULL);
+
+ if (result != ISC_R_SUCCESS) {
+ UNEXPECTED_ERROR(__FILE__, __LINE__,
+ "raw master file write failed: %s",
+ isc_result_totext(result));
+ return (result);
+ }
+
+ return (result);
+}
+
+static isc_result_t
+dump_rdatasets_raw(isc_mem_t *mctx, dns_name_t *name,
+ dns_rdatasetiter_t *rdsiter, dns_totext_ctx_t *ctx,
+ isc_buffer_t *buffer, FILE *f)
+{
+ isc_result_t result;
+ dns_rdataset_t rdataset;
+
+ for (result = dns_rdatasetiter_first(rdsiter);
+ result == ISC_R_SUCCESS;
+ result = dns_rdatasetiter_next(rdsiter)) {
+
+ dns_rdataset_init(&rdataset);
+ dns_rdatasetiter_current(rdsiter, &rdataset);
+
+ if (rdataset.type == 0 &&
+ (ctx->style.flags & DNS_STYLEFLAG_NCACHE) == 0) {
+ /* Omit negative cache entries */
+ } else {
+ result = dump_rdataset_raw(mctx, name, &rdataset,
+ buffer, f);
+ }
+ dns_rdataset_disassociate(&rdataset);
+ }
+
+ if (result == ISC_R_NOMORE)
+ result = ISC_R_SUCCESS;
+
+ return (result);
+}
+
+/*
+ * Initial size of text conversion buffer. The buffer is used
+ * for several purposes: converting origin names, rdatasets,
+ * $DATE timestamps, and comment strings for $TTL directives.
+ *
+ * When converting rdatasets, it is dynamically resized, but
+ * when converting origins, timestamps, etc it is not. Therefore,
+ * the initial size must large enough to hold the longest possible
+ * text representation of any domain name (for $ORIGIN).
+ */
+static const int initial_buffer_length = 1200;
+
+static isc_result_t
+dumptostreaminc(dns_dumpctx_t *dctx);
+
+static void
+dumpctx_destroy(dns_dumpctx_t *dctx) {
+
+ dctx->magic = 0;
+ DESTROYLOCK(&dctx->lock);
+ if (dctx->version != NULL)
+ dns_db_closeversion(dctx->db, &dctx->version, ISC_FALSE);
+ dns_dbiterator_destroy(&dctx->dbiter);
+ dns_db_detach(&dctx->db);
+ if (dctx->task != NULL)
+ isc_task_detach(&dctx->task);
+ if (dctx->file != NULL)
+ isc_mem_free(dctx->mctx, dctx->file);
+ if (dctx->tmpfile != NULL)
+ isc_mem_free(dctx->mctx, dctx->tmpfile);
+ isc_mem_putanddetach(&dctx->mctx, dctx, sizeof(*dctx));
+}
+
+void
+dns_dumpctx_attach(dns_dumpctx_t *source, dns_dumpctx_t **target) {
+
+ REQUIRE(DNS_DCTX_VALID(source));
+ REQUIRE(target != NULL && *target == NULL);
+
+ LOCK(&source->lock);
+ INSIST(source->references > 0);
+ source->references++;
+ INSIST(source->references != 0); /* Overflow? */
+ UNLOCK(&source->lock);
+
+ *target = source;
+}
+
+void
+dns_dumpctx_detach(dns_dumpctx_t **dctxp) {
+ dns_dumpctx_t *dctx;
+ isc_boolean_t need_destroy = ISC_FALSE;
+
+ REQUIRE(dctxp != NULL);
+ dctx = *dctxp;
+ REQUIRE(DNS_DCTX_VALID(dctx));
+
+ *dctxp = NULL;
+
+ LOCK(&dctx->lock);
+ INSIST(dctx->references != 0);
+ dctx->references--;
+ if (dctx->references == 0)
+ need_destroy = ISC_TRUE;
+ UNLOCK(&dctx->lock);
+ if (need_destroy)
+ dumpctx_destroy(dctx);
+}
+
+dns_dbversion_t *
+dns_dumpctx_version(dns_dumpctx_t *dctx) {
+ REQUIRE(DNS_DCTX_VALID(dctx));
+ return (dctx->version);
+}
+
+dns_db_t *
+dns_dumpctx_db(dns_dumpctx_t *dctx) {
+ REQUIRE(DNS_DCTX_VALID(dctx));
+ return (dctx->db);
+}
+
+void
+dns_dumpctx_cancel(dns_dumpctx_t *dctx) {
+ REQUIRE(DNS_DCTX_VALID(dctx));
+
+ LOCK(&dctx->lock);
+ dctx->canceled = ISC_TRUE;
+ UNLOCK(&dctx->lock);
+}
+
+static isc_result_t
+closeandrename(FILE *f, isc_result_t result, const char *temp, const char *file)
+{
+ isc_result_t tresult;
+ isc_boolean_t logit = ISC_TF(result == ISC_R_SUCCESS);
+
+ if (result == ISC_R_SUCCESS)
+ result = isc_stdio_sync(f);
+ if (result != ISC_R_SUCCESS && logit) {
+ isc_log_write(dns_lctx, ISC_LOGCATEGORY_GENERAL,
+ DNS_LOGMODULE_MASTERDUMP, ISC_LOG_ERROR,
+ "dumping master file: %s: fsync: %s",
+ temp, isc_result_totext(result));
+ logit = ISC_FALSE;
+ }
+ tresult = isc_stdio_close(f);
+ if (result == ISC_R_SUCCESS)
+ result = tresult;
+ if (result != ISC_R_SUCCESS && logit) {
+ isc_log_write(dns_lctx, ISC_LOGCATEGORY_GENERAL,
+ DNS_LOGMODULE_MASTERDUMP, ISC_LOG_ERROR,
+ "dumping master file: %s: fclose: %s",
+ temp, isc_result_totext(result));
+ logit = ISC_FALSE;
+ }
+ if (result == ISC_R_SUCCESS)
+ result = isc_file_rename(temp, file);
+ else
+ (void)isc_file_remove(temp);
+ if (result != ISC_R_SUCCESS && logit) {
+ isc_log_write(dns_lctx, ISC_LOGCATEGORY_GENERAL,
+ DNS_LOGMODULE_MASTERDUMP, ISC_LOG_ERROR,
+ "dumping master file: rename: %s: %s",
+ file, isc_result_totext(result));
+ }
+ return (result);
+}
+
+static void
+dump_quantum(isc_task_t *task, isc_event_t *event) {
+ isc_result_t result;
+ isc_result_t tresult;
+ dns_dumpctx_t *dctx;
+
+ REQUIRE(event != NULL);
+ dctx = event->ev_arg;
+ REQUIRE(DNS_DCTX_VALID(dctx));
+ if (dctx->canceled)
+ result = ISC_R_CANCELED;
+ else
+ result = dumptostreaminc(dctx);
+ if (result == DNS_R_CONTINUE) {
+ event->ev_arg = dctx;
+ isc_task_send(task, &event);
+ return;
+ }
+
+ if (dctx->file != NULL) {
+ tresult = closeandrename(dctx->f, result,
+ dctx->tmpfile, dctx->file);
+ if (tresult != ISC_R_SUCCESS && result == ISC_R_SUCCESS)
+ result = tresult;
+ }
+ (dctx->done)(dctx->done_arg, result);
+ isc_event_free(&event);
+ dns_dumpctx_detach(&dctx);
+}
+
+static isc_result_t
+task_send(dns_dumpctx_t *dctx) {
+ isc_event_t *event;
+
+ event = isc_event_allocate(dctx->mctx, NULL, DNS_EVENT_DUMPQUANTUM,
+ dump_quantum, dctx, sizeof(*event));
+ if (event == NULL)
+ return (ISC_R_NOMEMORY);
+ isc_task_send(dctx->task, &event);
+ return (ISC_R_SUCCESS);
+}
+
+static isc_result_t
+dumpctx_create(isc_mem_t *mctx, dns_db_t *db, dns_dbversion_t *version,
+ const dns_master_style_t *style, FILE *f, dns_dumpctx_t **dctxp,
+ dns_masterformat_t format)
+{
+ dns_dumpctx_t *dctx;
+ isc_result_t result;
+ isc_boolean_t relative;
+
+ dctx = isc_mem_get(mctx, sizeof(*dctx));
+ if (dctx == NULL)
+ return (ISC_R_NOMEMORY);
+
+ dctx->mctx = NULL;
+ dctx->f = f;
+ dctx->dbiter = NULL;
+ dctx->db = NULL;
+ dctx->version = NULL;
+ dctx->done = NULL;
+ dctx->done_arg = NULL;
+ dctx->task = NULL;
+ dctx->nodes = 0;
+ dctx->first = ISC_TRUE;
+ dctx->canceled = ISC_FALSE;
+ dctx->file = NULL;
+ dctx->tmpfile = NULL;
+ dctx->format = format;
+
+ switch (format) {
+ case dns_masterformat_text:
+ dctx->dumpsets = dump_rdatasets_text;
+ break;
+ case dns_masterformat_raw:
+ dctx->dumpsets = dump_rdatasets_raw;
+ break;
+ default:
+ INSIST(0);
+ break;
+ }
+
+ result = totext_ctx_init(style, &dctx->tctx);
+ if (result != ISC_R_SUCCESS) {
+ UNEXPECTED_ERROR(__FILE__, __LINE__,
+ "could not set master file style");
+ goto cleanup;
+ }
+
+ isc_stdtime_get(&dctx->now);
+ dns_db_attach(db, &dctx->db);
+
+ dctx->do_date = dns_db_iscache(dctx->db);
+
+ if (dctx->format == dns_masterformat_text &&
+ (dctx->tctx.style.flags & DNS_STYLEFLAG_REL_OWNER) != 0) {
+ relative = ISC_TRUE;
+ } else
+ relative = ISC_FALSE;
+ result = dns_db_createiterator(dctx->db, relative, &dctx->dbiter);
+ if (result != ISC_R_SUCCESS)
+ goto cleanup;
+
+ result = isc_mutex_init(&dctx->lock);
+ if (result != ISC_R_SUCCESS)
+ goto cleanup;
+ if (version != NULL)
+ dns_db_attachversion(dctx->db, version, &dctx->version);
+ else if (!dns_db_iscache(db))
+ dns_db_currentversion(dctx->db, &dctx->version);
+ isc_mem_attach(mctx, &dctx->mctx);
+ dctx->references = 1;
+ dctx->magic = DNS_DCTX_MAGIC;
+ *dctxp = dctx;
+ return (ISC_R_SUCCESS);
+
+ cleanup:
+ if (dctx->dbiter != NULL)
+ dns_dbiterator_destroy(&dctx->dbiter);
+ if (dctx->db != NULL)
+ dns_db_detach(&dctx->db);
+ if (dctx != NULL)
+ isc_mem_put(mctx, dctx, sizeof(*dctx));
+ return (result);
+}
+
+static isc_result_t
+dumptostreaminc(dns_dumpctx_t *dctx) {
+ isc_result_t result;
+ isc_buffer_t buffer;
+ char *bufmem;
+ isc_region_t r;
+ dns_name_t *name;
+ dns_fixedname_t fixname;
+ unsigned int nodes;
+ dns_masterrawheader_t rawheader;
+ isc_uint32_t now32;
+ isc_time_t start;
+
+ bufmem = isc_mem_get(dctx->mctx, initial_buffer_length);
+ if (bufmem == NULL)
+ return (ISC_R_NOMEMORY);
+
+ isc_buffer_init(&buffer, bufmem, initial_buffer_length);
+
+ dns_fixedname_init(&fixname);
+ name = dns_fixedname_name(&fixname);
+
+ if (dctx->first) {
+ switch (dctx->format) {
+ case dns_masterformat_text:
+ /*
+ * If the database has cache semantics, output an
+ * RFC2540 $DATE directive so that the TTLs can be
+ * adjusted when it is reloaded. For zones it is not
+ * really needed, and it would make the file
+ * incompatible with pre-RFC2540 software, so we omit
+ * it in the zone case.
+ */
+ if (dctx->do_date) {
+ result = dns_time32_totext(dctx->now, &buffer);
+ RUNTIME_CHECK(result == ISC_R_SUCCESS);
+ isc_buffer_usedregion(&buffer, &r);
+ fprintf(dctx->f, "$DATE %.*s\n",
+ (int) r.length, (char *) r.base);
+ }
+ break;
+ case dns_masterformat_raw:
+ r.base = (unsigned char *)&rawheader;
+ r.length = sizeof(rawheader);
+ isc_buffer_region(&buffer, &r);
+ isc_buffer_putuint32(&buffer, dns_masterformat_raw);
+ isc_buffer_putuint32(&buffer, DNS_RAWFORMAT_VERSION);
+ if (sizeof(now32) != sizeof(dctx->now)) {
+ /*
+ * We assume isc_stdtime_t is a 32-bit integer,
+ * which should be the case on most cases.
+ * If it turns out to be uncommon, we'll need
+ * to bump the version number and revise the
+ * header format.
+ */
+ isc_log_write(dns_lctx,
+ ISC_LOGCATEGORY_GENERAL,
+ DNS_LOGMODULE_MASTERDUMP,
+ ISC_LOG_INFO,
+ "dumping master file in raw "
+ "format: stdtime is not 32bits");
+ now32 = 0;
+ } else
+ now32 = dctx->now;
+ isc_buffer_putuint32(&buffer, now32);
+ INSIST(isc_buffer_usedlength(&buffer) <=
+ sizeof(rawheader));
+ result = isc_stdio_write(buffer.base, 1,
+ isc_buffer_usedlength(&buffer),
+ dctx->f, NULL);
+ if (result != ISC_R_SUCCESS)
+ return (result);
+ isc_buffer_clear(&buffer);
+ break;
+ default:
+ INSIST(0);
+ }
+
+ result = dns_dbiterator_first(dctx->dbiter);
+ dctx->first = ISC_FALSE;
+ } else
+ result = ISC_R_SUCCESS;
+
+ nodes = dctx->nodes;
+ isc_time_now(&start);
+ while (result == ISC_R_SUCCESS && (dctx->nodes == 0 || nodes--)) {
+ dns_rdatasetiter_t *rdsiter = NULL;
+ dns_dbnode_t *node = NULL;
+
+ result = dns_dbiterator_current(dctx->dbiter, &node, name);
+ if (result != ISC_R_SUCCESS && result != DNS_R_NEWORIGIN)
+ break;
+ if (result == DNS_R_NEWORIGIN) {
+ dns_name_t *origin =
+ dns_fixedname_name(&dctx->tctx.origin_fixname);
+ result = dns_dbiterator_origin(dctx->dbiter, origin);
+ RUNTIME_CHECK(result == ISC_R_SUCCESS);
+ if ((dctx->tctx.style.flags & DNS_STYLEFLAG_REL_DATA) != 0)
+ dctx->tctx.origin = origin;
+ dctx->tctx.neworigin = origin;
+ }
+ result = dns_db_allrdatasets(dctx->db, node, dctx->version,
+ dctx->now, &rdsiter);
+ if (result != ISC_R_SUCCESS) {
+ dns_db_detachnode(dctx->db, &node);
+ goto fail;
+ }
+ result = (dctx->dumpsets)(dctx->mctx, name, rdsiter,
+ &dctx->tctx, &buffer, dctx->f);
+ dns_rdatasetiter_destroy(&rdsiter);
+ if (result != ISC_R_SUCCESS) {
+ dns_db_detachnode(dctx->db, &node);
+ goto fail;
+ }
+ dns_db_detachnode(dctx->db, &node);
+ result = dns_dbiterator_next(dctx->dbiter);
+ }
+
+ /*
+ * Work out how many nodes can be written in the time between
+ * two requests to the nameserver. Smooth the resulting number and
+ * use it as a estimate for the number of nodes to be written in the
+ * next iteration.
+ */
+ if (dctx->nodes != 0 && result == ISC_R_SUCCESS) {
+ unsigned int pps = dns_pps; /* packets per second */
+ unsigned int interval;
+ isc_uint64_t usecs;
+ isc_time_t end;
+
+ isc_time_now(&end);
+ if (pps < 100)
+ pps = 100;
+ interval = 1000000 / pps; /* interval in usecs */
+ if (interval == 0)
+ interval = 1;
+ usecs = isc_time_microdiff(&end, &start);
+ if (usecs == 0) {
+ dctx->nodes = dctx->nodes * 2;
+ if (dctx->nodes > 1000)
+ dctx->nodes = 1000;
+ } else {
+ nodes = dctx->nodes * interval;
+ nodes /= (unsigned int)usecs;
+ if (nodes == 0)
+ nodes = 1;
+ else if (nodes > 1000)
+ nodes = 1000;
+
+ /* Smooth and assign. */
+ dctx->nodes = (nodes + dctx->nodes * 7) / 8;
+
+ isc_log_write(dns_lctx, ISC_LOGCATEGORY_GENERAL,
+ DNS_LOGMODULE_MASTERDUMP,
+ ISC_LOG_DEBUG(1),
+ "dumptostreaminc(%p) new nodes -> %d\n",
+ dctx, dctx->nodes);
+ }
+ result = dns_dbiterator_pause(dctx->dbiter);
+ RUNTIME_CHECK(result == ISC_R_SUCCESS);
+ result = DNS_R_CONTINUE;
+ } else if (result == ISC_R_NOMORE)
+ result = ISC_R_SUCCESS;
+ fail:
+ isc_mem_put(dctx->mctx, buffer.base, buffer.length);
+ return (result);
+}
+
+isc_result_t
+dns_master_dumptostreaminc(isc_mem_t *mctx, dns_db_t *db,
+ dns_dbversion_t *version,
+ const dns_master_style_t *style,
+ FILE *f, isc_task_t *task,
+ dns_dumpdonefunc_t done, void *done_arg,
+ dns_dumpctx_t **dctxp)
+{
+ dns_dumpctx_t *dctx = NULL;
+ isc_result_t result;
+
+ REQUIRE(task != NULL);
+ REQUIRE(f != NULL);
+ REQUIRE(done != NULL);
+
+ result = dumpctx_create(mctx, db, version, style, f, &dctx,
+ dns_masterformat_text);
+ if (result != ISC_R_SUCCESS)
+ return (result);
+ isc_task_attach(task, &dctx->task);
+ dctx->done = done;
+ dctx->done_arg = done_arg;
+ dctx->nodes = 100;
+
+ result = task_send(dctx);
+ if (result == ISC_R_SUCCESS) {
+ dns_dumpctx_attach(dctx, dctxp);
+ return (DNS_R_CONTINUE);
+ }
+
+ dns_dumpctx_detach(&dctx);
+ return (result);
+}
+
+/*
+ * Dump an entire database into a master file.
+ */
+isc_result_t
+dns_master_dumptostream(isc_mem_t *mctx, dns_db_t *db,
+ dns_dbversion_t *version,
+ const dns_master_style_t *style,
+ FILE *f)
+{
+ return (dns_master_dumptostream2(mctx, db, version, style,
+ dns_masterformat_text, f));
+}
+
+isc_result_t
+dns_master_dumptostream2(isc_mem_t *mctx, dns_db_t *db,
+ dns_dbversion_t *version,
+ const dns_master_style_t *style,
+ dns_masterformat_t format, FILE *f)
+{
+ dns_dumpctx_t *dctx = NULL;
+ isc_result_t result;
+
+ result = dumpctx_create(mctx, db, version, style, f, &dctx, format);
+ if (result != ISC_R_SUCCESS)
+ return (result);
+
+ result = dumptostreaminc(dctx);
+ INSIST(result != DNS_R_CONTINUE);
+ dns_dumpctx_detach(&dctx);
+ return (result);
+}
+
+static isc_result_t
+opentmp(isc_mem_t *mctx, const char *file, char **tempp, FILE **fp) {
+ FILE *f = NULL;
+ isc_result_t result;
+ char *tempname = NULL;
+ int tempnamelen;
+
+ tempnamelen = strlen(file) + 20;
+ tempname = isc_mem_allocate(mctx, tempnamelen);
+ if (tempname == NULL)
+ return (ISC_R_NOMEMORY);
+
+ result = isc_file_mktemplate(file, tempname, tempnamelen);
+ if (result != ISC_R_SUCCESS)
+ goto cleanup;
+
+ result = isc_file_openunique(tempname, &f);
+ if (result != ISC_R_SUCCESS) {
+ isc_log_write(dns_lctx, ISC_LOGCATEGORY_GENERAL,
+ DNS_LOGMODULE_MASTERDUMP, ISC_LOG_ERROR,
+ "dumping master file: %s: open: %s",
+ tempname, isc_result_totext(result));
+ goto cleanup;
+ }
+ *tempp = tempname;
+ *fp = f;
+ return (ISC_R_SUCCESS);
+
+cleanup:
+ isc_mem_free(mctx, tempname);
+ return (result);
+}
+
+isc_result_t
+dns_master_dumpinc(isc_mem_t *mctx, dns_db_t *db, dns_dbversion_t *version,
+ const dns_master_style_t *style, const char *filename,
+ isc_task_t *task, dns_dumpdonefunc_t done, void *done_arg,
+ dns_dumpctx_t **dctxp)
+{
+ return (dns_master_dumpinc2(mctx, db, version, style, filename, task,
+ done, done_arg, dctxp,
+ dns_masterformat_text));
+}
+
+isc_result_t
+dns_master_dumpinc2(isc_mem_t *mctx, dns_db_t *db, dns_dbversion_t *version,
+ const dns_master_style_t *style, const char *filename,
+ isc_task_t *task, dns_dumpdonefunc_t done, void *done_arg,
+ dns_dumpctx_t **dctxp, dns_masterformat_t format)
+{
+ FILE *f = NULL;
+ isc_result_t result;
+ char *tempname = NULL;
+ char *file = NULL;
+ dns_dumpctx_t *dctx = NULL;
+
+ file = isc_mem_strdup(mctx, filename);
+ if (file == NULL)
+ return (ISC_R_NOMEMORY);
+
+ result = opentmp(mctx, filename, &tempname, &f);
+ if (result != ISC_R_SUCCESS)
+ goto cleanup;
+
+ result = dumpctx_create(mctx, db, version, style, f, &dctx, format);
+ if (result != ISC_R_SUCCESS) {
+ (void)isc_stdio_close(f);
+ (void)isc_file_remove(tempname);
+ goto cleanup;
+ }
+
+ isc_task_attach(task, &dctx->task);
+ dctx->done = done;
+ dctx->done_arg = done_arg;
+ dctx->nodes = 100;
+ dctx->file = file;
+ file = NULL;
+ dctx->tmpfile = tempname;
+ tempname = NULL;
+
+ result = task_send(dctx);
+ if (result == ISC_R_SUCCESS) {
+ dns_dumpctx_attach(dctx, dctxp);
+ return (DNS_R_CONTINUE);
+ }
+
+ cleanup:
+ if (dctx != NULL)
+ dns_dumpctx_detach(&dctx);
+ if (file != NULL)
+ isc_mem_free(mctx, file);
+ if (tempname != NULL)
+ isc_mem_free(mctx, tempname);
+ return (result);
+}
+
+isc_result_t
+dns_master_dump(isc_mem_t *mctx, dns_db_t *db, dns_dbversion_t *version,
+ const dns_master_style_t *style, const char *filename)
+{
+ return (dns_master_dump2(mctx, db, version, style, filename,
+ dns_masterformat_text));
+}
+
+isc_result_t
+dns_master_dump2(isc_mem_t *mctx, dns_db_t *db, dns_dbversion_t *version,
+ const dns_master_style_t *style, const char *filename,
+ dns_masterformat_t format)
+{
+ FILE *f = NULL;
+ isc_result_t result;
+ char *tempname;
+ dns_dumpctx_t *dctx = NULL;
+
+ result = opentmp(mctx, filename, &tempname, &f);
+ if (result != ISC_R_SUCCESS)
+ return (result);
+
+ result = dumpctx_create(mctx, db, version, style, f, &dctx, format);
+ if (result != ISC_R_SUCCESS)
+ goto cleanup;
+
+ result = dumptostreaminc(dctx);
+ INSIST(result != DNS_R_CONTINUE);
+ dns_dumpctx_detach(&dctx);
+
+ result = closeandrename(f, result, tempname, filename);
+
+ cleanup:
+ isc_mem_free(mctx, tempname);
+ return (result);
+}
+
+/*
+ * Dump a database node into a master file.
+ * XXX: this function assumes the text format.
+ */
+isc_result_t
+dns_master_dumpnodetostream(isc_mem_t *mctx, dns_db_t *db,
+ dns_dbversion_t *version,
+ dns_dbnode_t *node, dns_name_t *name,
+ const dns_master_style_t *style,
+ FILE *f)
+{
+ isc_result_t result;
+ isc_buffer_t buffer;
+ char *bufmem;
+ isc_stdtime_t now;
+ dns_totext_ctx_t ctx;
+ dns_rdatasetiter_t *rdsiter = NULL;
+
+ result = totext_ctx_init(style, &ctx);
+ if (result != ISC_R_SUCCESS) {
+ UNEXPECTED_ERROR(__FILE__, __LINE__,
+ "could not set master file style");
+ return (ISC_R_UNEXPECTED);
+ }
+
+ isc_stdtime_get(&now);
+
+ bufmem = isc_mem_get(mctx, initial_buffer_length);
+ if (bufmem == NULL)
+ return (ISC_R_NOMEMORY);
+
+ isc_buffer_init(&buffer, bufmem, initial_buffer_length);
+
+ result = dns_db_allrdatasets(db, node, version, now, &rdsiter);
+ if (result != ISC_R_SUCCESS)
+ goto failure;
+ result = dump_rdatasets_text(mctx, name, rdsiter, &ctx, &buffer, f);
+ if (result != ISC_R_SUCCESS)
+ goto failure;
+ dns_rdatasetiter_destroy(&rdsiter);
+
+ result = ISC_R_SUCCESS;
+
+ failure:
+ isc_mem_put(mctx, buffer.base, buffer.length);
+ return (result);
+}
+
+isc_result_t
+dns_master_dumpnode(isc_mem_t *mctx, dns_db_t *db, dns_dbversion_t *version,
+ dns_dbnode_t *node, dns_name_t *name,
+ const dns_master_style_t *style, const char *filename)
+{
+ FILE *f = NULL;
+ isc_result_t result;
+
+ result = isc_stdio_open(filename, "w", &f);
+ if (result != ISC_R_SUCCESS) {
+ isc_log_write(dns_lctx, ISC_LOGCATEGORY_GENERAL,
+ DNS_LOGMODULE_MASTERDUMP, ISC_LOG_ERROR,
+ "dumping node to file: %s: open: %s", filename,
+ isc_result_totext(result));
+ return (ISC_R_UNEXPECTED);
+ }
+
+ result = dns_master_dumpnodetostream(mctx, db, version, node, name,
+ style, f);
+
+ result = isc_stdio_close(f);
+ if (result != ISC_R_SUCCESS) {
+ isc_log_write(dns_lctx, ISC_LOGCATEGORY_GENERAL,
+ DNS_LOGMODULE_MASTERDUMP, ISC_LOG_ERROR,
+ "dumping master file: %s: close: %s", filename,
+ isc_result_totext(result));
+ return (ISC_R_UNEXPECTED);
+ }
+
+ return (result);
+}
+
+isc_result_t
+dns_master_stylecreate(dns_master_style_t **stylep, unsigned int flags,
+ unsigned int ttl_column, unsigned int class_column,
+ unsigned int type_column, unsigned int rdata_column,
+ unsigned int line_length, unsigned int tab_width,
+ isc_mem_t *mctx)
+{
+ dns_master_style_t *style;
+
+ REQUIRE(stylep != NULL && *stylep == NULL);
+ style = isc_mem_get(mctx, sizeof(*style));
+ if (style == NULL)
+ return (ISC_R_NOMEMORY);
+
+ style->flags = flags;
+ style->ttl_column = ttl_column;
+ style->class_column = class_column;
+ style->type_column = type_column;
+ style->rdata_column = rdata_column;
+ style->line_length = line_length;
+ style->tab_width = tab_width;
+
+ *stylep = style;
+ return (ISC_R_SUCCESS);
+}
+
+void
+dns_master_styledestroy(dns_master_style_t **stylep, isc_mem_t *mctx) {
+ dns_master_style_t *style;
+
+ REQUIRE(stylep != NULL && *stylep != NULL);
+ style = *stylep;
+ *stylep = NULL;
+ isc_mem_put(mctx, style, sizeof(*style));
+}
--
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