Adding upstream version 1:9.11.5.P4+dfsg.upstream/1%9.11.5.P4+dfsgupstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

4 files changed, 839 insertions, 0 deletions

diff --git a/contrib/dlz/modules/wildcard/Makefile b/contrib/dlz/modules/wildcard/Makefile
new file mode 100644
index 0000000..20a5d4e
--- /dev/null
+++ b/contrib/dlz/modules/wildcard/Makefile
@@ -0,0 +1,20 @@
+prefix = /usr
+libdir = $(prefix)/lib/bind9
+
+CFLAGS=-fPIC -g -I../include
+
+all: dlz_wildcard_dynamic.so
+
+dlz_dbi.o: ../common/dlz_dbi.c
+	$(CC) $(CFLAGS) -c ../common/dlz_dbi.c
+
+dlz_wildcard_dynamic.so: dlz_wildcard_dynamic.c dlz_dbi.o
+	$(CC) $(CFLAGS) -shared -o dlz_wildcard_dynamic.so \
+		dlz_wildcard_dynamic.c dlz_dbi.o
+
+clean:
+	rm -f dlz_wildcard_dynamic.so *.o
+
+install: dlz_wildcard_dynamic.so
+	mkdir -p $(DESTDIR)$(libdir)
+	install dlz_wildcard_dynamic.so $(DESTDIR)$(libdir)
diff --git a/contrib/dlz/modules/wildcard/README b/contrib/dlz/modules/wildcard/README
new file mode 100644
index 0000000..b19009b
--- /dev/null
+++ b/contrib/dlz/modules/wildcard/README
@@ -0,0 +1,31 @@
+The "wildcard" DLZ module provides a "template" zone for domains matching
+a wildcard name.  For example, the following DLZ configuration would match
+any zone name containing the string "example" and ending with .com, such
+as "thisexample.com", "exampleofthat.com", or "anexampleoftheotherthing.com".
+
+    dlz "test" {
+	database "dlopen ../dlz_wildcard_dynamic.so
+        *example*.com 10.53.* 1800
+        @      3600    SOA   {ns3.example.nil. support.example.nil. 42 14400 7200 2592000 600}
+        @      3600    NS     ns3.example.nil.
+        @      3600    NS     ns4.example.nil.
+        @      3600    NS     ns8.example.nil.
+        @      3600    MX     {5 mail.example.nil.}
+        ftp    86400   A      192.0.0.1
+        sql    86400   A      192.0.0.2
+        tmp    {}      A      192.0.0.3
+        www    86400   A      192.0.0.3
+        www    86400   AAAA   ::1
+        txt    300     TXT    {\"you requested $record$ in $zone$\"}
+        *      86400   A      192.0.0.100";
+    };
+
+For any zone name matchin the wildcard, it would return the data from
+the template.  "$zone$" is replaced with zone name: i.e., the shortest
+possible string of labels in the query name that matches the wildcard.
+"$record$" is replaced with the remainder of the query name.  In the
+example above, a query for "txt.thisexample.com/TXT" would return the
+string "you requested txt in thisexample.com".
+
+Any client whose source address matches the second wildcard ("10.53.*")
+is allowed to request a zone transfer.
diff --git a/contrib/dlz/modules/wildcard/dlz_wildcard_dynamic.c b/contrib/dlz/modules/wildcard/dlz_wildcard_dynamic.c
new file mode 100644
index 0000000..07b65d2
--- /dev/null
+++ b/contrib/dlz/modules/wildcard/dlz_wildcard_dynamic.c
@@ -0,0 +1,730 @@
+/*
+ * Copyright (C) 2002 Stichting NLnet, Netherlands, stichting@nlnet.nl.
+ * Copyright (C) 2012 Vadim Goncharov, Russia, vadim_nuclight@mail.ru.
+ *
+ * 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 STICHTING NLNET
+ * DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL
+ * STICHTING NLNET 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.
+ *
+ * The development of Dynamically Loadable Zones (DLZ) for Bind 9 was
+ * conceived and contributed by Rob Butler.
+ *
+ * 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 ROB BUTLER
+ * DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL
+ * ROB BUTLER 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.
+ */
+
+/*
+ * Copyright (C) 1999-2001, 2013, 2016  Internet Systems Consortium, Inc. ("ISC")
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ */
+
+/*
+ * This provides the externally loadable wildcard DLZ module.
+ */
+
+#include <inttypes.h>
+#include <stdio.h>
+#include <string.h>
+#include <stdarg.h>
+#include <stdlib.h>
+
+#include <dlz_minimal.h>
+#include <dlz_list.h>
+#include <dlz_dbi.h>
+
+#include <ctype.h>
+
+#define DE_CONST(konst, var) \
+	do { \
+		union { const void *k; void *v; } _u; \
+		_u.k = konst; \
+		var = _u.v; \
+	} while (0)
+
+/* fnmatch() return values. */
+#define	FNM_NOMATCH	1	/* Match failed. */
+
+/* fnmatch() flags. */
+#define	FNM_NOESCAPE	0x01	/* Disable backslash escaping. */
+#define	FNM_PATHNAME	0x02	/* Slash must be matched by slash. */
+#define	FNM_PERIOD	0x04	/* Period must be matched by period. */
+#define	FNM_LEADING_DIR	0x08	/* Ignore /<tail> after Imatch. */
+#define	FNM_CASEFOLD	0x10	/* Case insensitive search. */
+#define	FNM_IGNORECASE	FNM_CASEFOLD
+#define	FNM_FILE_NAME	FNM_PATHNAME
+
+/*
+ * Our data structures.
+ */
+
+typedef struct named_rr nrr_t;
+typedef DLZ_LIST(nrr_t) rr_list_t;
+
+typedef struct config_data {
+	char		*zone_pattern;
+	char		*axfr_pattern;
+	rr_list_t	rrs_list;
+	char		*zone;
+	char		*record;
+	char		*client;
+
+	/* Helper functions from the dlz_dlopen driver */
+	log_t *log;
+	dns_sdlz_putrr_t *putrr;
+	dns_sdlz_putnamedrr_t *putnamedrr;
+	dns_dlz_writeablezone_t *writeable_zone;
+} config_data_t;
+
+struct named_rr {
+	char		*name;
+	char		*type;
+	int		ttl;
+	query_list_t	*data;
+	DLZ_LINK(nrr_t)	link;
+};
+
+/*
+ * Forward references
+ */
+static int
+rangematch(const char *, char, int, char **);
+
+static int
+fnmatch(const char *pattern, const char *string, int flags);
+
+static void
+b9_add_helper(struct config_data *cd, const char *helper_name, void *ptr);
+
+static const char *
+shortest_match(const char *pattern, const char *string);
+
+isc_result_t
+dlz_allnodes(const char *zone, void *dbdata, dns_sdlzallnodes_t *allnodes) {
+	config_data_t *cd = (config_data_t *) dbdata;
+	isc_result_t result;
+	char *querystring = NULL;
+	nrr_t *nrec;
+	int i = 0;
+
+	DE_CONST(zone, cd->zone);
+
+	/* Write info message to log */
+	cd->log(ISC_LOG_DEBUG(1),
+		"dlz_wildcard allnodes called for zone '%s'", zone);
+
+	result = ISC_R_FAILURE;
+
+	nrec = DLZ_LIST_HEAD(cd->rrs_list);
+	while (nrec != NULL) {
+		cd->record = nrec->name;
+
+		querystring = build_querystring(nrec->data);
+
+		if (querystring == NULL) {
+			result = ISC_R_NOMEMORY;
+			goto done;
+		}
+
+		cd->log(ISC_LOG_DEBUG(2),
+			"dlz_wildcard allnodes entry num %d: calling "
+			"putnamedrr(name=%s type=%s ttl=%d qs=%s)",
+			i++, nrec->name, nrec->type, nrec->ttl, querystring);
+
+		result = cd->putnamedrr(allnodes, nrec->name, nrec->type,
+					nrec->ttl, querystring);
+		if (result != ISC_R_SUCCESS)
+			goto done;
+
+		nrec = DLZ_LIST_NEXT(nrec, link);
+	}
+
+done:
+	cd->zone = NULL;
+
+	if (querystring != NULL)
+		free(querystring);
+
+	return (result);
+}
+
+isc_result_t
+dlz_allowzonexfr(void *dbdata, const char *name, const char *client) {
+	config_data_t *cd = (config_data_t *) dbdata;
+
+	UNUSED(name);
+
+	/* Write info message to log */
+	cd->log(ISC_LOG_DEBUG(1),
+		"dlz_wildcard allowzonexfr called for client '%s'", client);
+
+	if (fnmatch(cd->axfr_pattern, client, FNM_CASEFOLD) == 0)
+		return (ISC_R_SUCCESS);
+	else
+		return (ISC_R_NOTFOUND);
+}
+
+#if DLZ_DLOPEN_VERSION < 3
+isc_result_t
+dlz_findzonedb(void *dbdata, const char *name)
+#else
+isc_result_t
+dlz_findzonedb(void *dbdata, const char *name,
+	       dns_clientinfomethods_t *methods,
+	       dns_clientinfo_t *clientinfo)
+#endif
+{
+	config_data_t *cd = (config_data_t *) dbdata;
+	const char *p;
+
+#if DLZ_DLOPEN_VERSION >= 3
+	UNUSED(methods);
+	UNUSED(clientinfo);
+#endif
+
+	p = shortest_match(cd->zone_pattern, name);
+	if (p == NULL)
+		return (ISC_R_NOTFOUND);
+
+	/* Write info message to log */
+	cd->log(ISC_LOG_DEBUG(1),
+		"dlz_wildcard findzonedb matched '%s'", p);
+
+	return (ISC_R_SUCCESS);
+}
+
+#if DLZ_DLOPEN_VERSION == 1
+isc_result_t
+dlz_lookup(const char *zone, const char *name,
+	   void *dbdata, dns_sdlzlookup_t *lookup)
+#else
+isc_result_t
+dlz_lookup(const char *zone, const char *name,
+	   void *dbdata, dns_sdlzlookup_t *lookup,
+	   dns_clientinfomethods_t *methods,
+	   dns_clientinfo_t *clientinfo)
+#endif
+{
+	isc_result_t result;
+	config_data_t *cd = (config_data_t *) dbdata;
+	char *querystring = NULL;
+	const char *p;
+	char *namebuf;
+	nrr_t *nrec;
+	bool origin = true;
+
+#if DLZ_DLOPEN_VERSION >= 2
+	UNUSED(methods);
+	UNUSED(clientinfo);
+#endif
+
+	p = shortest_match(cd->zone_pattern, zone);
+	if (p == NULL)
+		return (ISC_R_NOTFOUND);
+
+	DE_CONST(name, cd->record);
+	DE_CONST(p, cd->zone);
+
+	if ((p != zone) && (strcmp(name, "@") == 0 || strcmp(name, zone) == 0))
+	{
+		size_t len = p - zone;
+		namebuf = malloc(len);
+		if (namebuf == NULL)
+			return (ISC_R_NOMEMORY);
+		strncpy(namebuf, zone, len - 1);
+		namebuf[len - 1] = '\0';
+		cd->record = namebuf;
+		origin = false;
+	} else if (p == zone)
+		cd->record = "@";
+
+	/* Write info message to log */
+	cd->log(ISC_LOG_DEBUG(1),
+		"dlz_wildcard_dynamic: lookup for '%s' in '%s': "
+		"trying '%s' in '%s'",
+		name, zone, cd->record, cd->zone);
+
+	result = ISC_R_NOTFOUND;
+	nrec = DLZ_LIST_HEAD(cd->rrs_list);
+	while (nrec != NULL) {
+		nrr_t *next = DLZ_LIST_NEXT(nrec, link);
+		if (strcmp(cd->record, nrec->name) == 0) {
+			/* We handle authority data in dlz_authority() */
+			if (strcmp(nrec->type, "SOA") == 0 ||
+			    strcmp(nrec->type, "NS") == 0)
+			{
+				nrec = next;
+				continue;
+			}
+
+			querystring = build_querystring(nrec->data);
+			if (querystring == NULL) {
+				result = ISC_R_NOMEMORY;
+				goto done;
+			}
+
+			result = cd->putrr(lookup, nrec->type,
+					   nrec->ttl, querystring);
+			if (result != ISC_R_SUCCESS)
+				goto done;
+
+			result = ISC_R_SUCCESS;
+
+			free(querystring);
+			querystring = NULL;
+		}
+		nrec = next;
+	}
+
+done:
+	cd->zone = NULL;
+	cd->record = NULL;
+
+	if (querystring != NULL)
+		free(querystring);
+
+	return (result);
+}
+
+isc_result_t
+dlz_authority(const char *zone, void *dbdata, dns_sdlzlookup_t *lookup) {
+	isc_result_t result;
+	config_data_t *cd = (config_data_t *) dbdata;
+	char *querystring = NULL;
+	nrr_t *nrec;
+	const char *p, *name = "@";
+
+	p = shortest_match(cd->zone_pattern, zone);
+	if (p == NULL)
+		return (ISC_R_NOTFOUND);
+
+	DE_CONST(p, cd->zone);
+
+	/* Write info message to log */
+	cd->log(ISC_LOG_DEBUG(1),
+		"dlz_wildcard_dynamic: authority for '%s'", zone);
+
+	result = ISC_R_NOTFOUND;
+	nrec = DLZ_LIST_HEAD(cd->rrs_list);
+	while (nrec != NULL) {
+		bool origin;
+		if (strcmp("@", nrec->name) == 0) {
+			isc_result_t presult;
+
+			querystring = build_querystring(nrec->data);
+			if (querystring == NULL) {
+				result = ISC_R_NOMEMORY;
+				goto done;
+			}
+
+			presult = cd->putrr(lookup, nrec->type,
+					   nrec->ttl, querystring);
+			if (presult != ISC_R_SUCCESS) {
+				result = presult;
+				goto done;
+			}
+
+			result = ISC_R_SUCCESS;
+
+			free(querystring);
+			querystring = NULL;
+		}
+		nrec = DLZ_LIST_NEXT(nrec, link);
+	}
+
+done:
+	cd->zone = NULL;
+
+	if (querystring != NULL)
+		free(querystring);
+
+	return (result);
+}
+
+static void
+destroy_rrlist(config_data_t *cd) {
+	nrr_t *trec, *nrec;
+
+	nrec = DLZ_LIST_HEAD(cd->rrs_list);
+
+	while (nrec != NULL) {
+		trec = nrec;
+
+		destroy_querylist(&trec->data);
+
+		if (trec->name != NULL)
+			free(trec->name);
+		if (trec->type != NULL)
+			free(trec->type);
+		trec->name = trec->type = NULL;
+
+		/* Get the next record, before we destroy this one. */
+		nrec = DLZ_LIST_NEXT(nrec, link);
+
+		free(trec);
+	}
+}
+
+isc_result_t
+dlz_create(const char *dlzname, unsigned int argc, char *argv[],
+	   void **dbdata, ...)
+{
+	config_data_t *cd;
+	char *endp;
+	int i, def_ttl;
+	nrr_t *trec = NULL;
+	isc_result_t result;
+	const char *helper_name;
+	va_list ap;
+
+	if (argc < 8 || argc % 4 != 0)
+		return (ISC_R_FAILURE);
+
+	cd = calloc(1, sizeof(config_data_t));
+	if (cd == NULL)
+		return (ISC_R_NOMEMORY);
+	memset(cd, 0, sizeof(config_data_t));
+
+	/* Fill in the helper functions */
+	va_start(ap, dbdata);
+	while ((helper_name = va_arg(ap, const char*)) != NULL)
+		b9_add_helper(cd, helper_name, va_arg(ap, void*));
+	va_end(ap);
+
+	/*
+	 * Write info message to log
+	 */
+	cd->log(ISC_LOG_INFO,
+		"Loading '%s' using DLZ_wildcard driver. "
+		"Zone: %s, AXFR allowed for: %s, $TTL: %s",
+		dlzname, argv[1], argv[2], argv[3]);
+
+	/* initialize the records list here to simplify cleanup */
+	DLZ_LIST_INIT(cd->rrs_list);
+
+	cd->zone_pattern = strdup(argv[1]);
+	cd->axfr_pattern = strdup(argv[2]);
+	if (cd->zone_pattern == NULL || cd->axfr_pattern == NULL) {
+		result = ISC_R_NOMEMORY;
+		goto cleanup;
+	}
+
+	def_ttl = strtol(argv[3], &endp, 10);
+	if (*endp != '\0' || def_ttl < 0) {
+		def_ttl = 3600;
+		cd->log(ISC_LOG_ERROR, "default TTL invalid, using 3600");
+	}
+
+	for (i = 4; i < argc; i += 4) {
+		result = ISC_R_NOMEMORY;
+
+		trec = malloc(sizeof(nrr_t));
+		if (trec == NULL)
+			goto full_cleanup;
+
+		memset(trec, 0, sizeof(nrr_t));
+
+		/* Initialize the record link */
+		DLZ_LINK_INIT(trec, link);
+		/* Append the record to the list */
+		DLZ_LIST_APPEND(cd->rrs_list, trec, link);
+
+		trec->name = strdup(argv[i]);
+		if (trec->name == NULL)
+			goto full_cleanup;
+
+		trec->type = strdup(argv[i + 2]);
+		if (trec->type == NULL)
+			goto full_cleanup;
+
+		trec->ttl = strtol(argv[i + 1], &endp, 10);
+		if (argv[i + 1][0] == '\0' || *endp != '\0' || trec->ttl < 0)
+			trec->ttl = def_ttl;
+
+		result = build_querylist(argv[i + 3], &cd->zone,
+					 &cd->record, &cd->client,
+					 &trec->data, 0, cd->log);
+		/* If unsuccessful, log err msg and cleanup */
+		if (result != ISC_R_SUCCESS) {
+			cd->log(ISC_LOG_ERROR,
+				"Could not build RR data list at argv[%d]",
+				i + 3);
+			goto full_cleanup;
+		}
+	}
+
+	*dbdata = cd;
+
+	return (ISC_R_SUCCESS);
+
+full_cleanup:
+	destroy_rrlist(cd);
+
+cleanup:
+	if (cd->zone_pattern != NULL)
+		free(cd->zone_pattern);
+	if (cd->axfr_pattern != NULL)
+		free(cd->axfr_pattern);
+	free(cd);
+
+	return (result);
+}
+
+void
+dlz_destroy(void *dbdata) {
+	config_data_t *cd = (config_data_t *) dbdata;
+
+	/*
+	 * Write debugging message to log
+	 */
+	cd->log(ISC_LOG_DEBUG(2), "Unloading DLZ_wildcard driver.");
+
+	destroy_rrlist(cd);
+
+	free(cd->zone_pattern);
+	free(cd->axfr_pattern);
+	free(cd);
+}
+
+
+/*
+ * Return the version of the API
+ */
+int
+dlz_version(unsigned int *flags) {
+	UNUSED(flags);
+	/* XXX: ok to set DNS_SDLZFLAG_THREADSAFE here? */
+	return (DLZ_DLOPEN_VERSION);
+}
+
+/*
+ * Register a helper function from the bind9 dlz_dlopen driver
+ */
+static void
+b9_add_helper(struct config_data *cd, const char *helper_name, void *ptr) {
+	if (strcmp(helper_name, "log") == 0)
+		cd->log = (log_t *)ptr;
+	if (strcmp(helper_name, "putrr") == 0)
+		cd->putrr = (dns_sdlz_putrr_t *)ptr;
+	if (strcmp(helper_name, "putnamedrr") == 0)
+		cd->putnamedrr = (dns_sdlz_putnamedrr_t *)ptr;
+	if (strcmp(helper_name, "writeable_zone") == 0)
+		cd->writeable_zone = (dns_dlz_writeablezone_t *)ptr;
+}
+
+static const char *
+shortest_match(const char *pattern, const char *string) {
+	const char *p = string;
+	if (pattern == NULL || p == NULL || *p == '\0')
+		return (NULL);
+
+	p += strlen(p);
+	while (p-- > string) {
+		if (*p == '.') {
+			if (fnmatch(pattern, p + 1, FNM_CASEFOLD) == 0)
+				return (p + 1);
+		}
+	}
+	if (fnmatch(pattern, string, FNM_CASEFOLD) == 0)
+		return (string);
+
+	return (NULL);
+}
+
+/*
+ * The helper functions stolen from the FreeBSD kernel (sys/libkern/fnmatch.c).
+ *
+ * Why don't we use fnmatch(3) from libc? Because it is not thread-safe, and
+ * it is not thread-safe because it supports multibyte characters. But here,
+ * in BIND, we want to be thread-safe and don't need multibyte - DNS names are
+ * always ASCII.
+ */
+#define	EOS	'\0'
+
+#define RANGE_MATCH     1
+#define RANGE_NOMATCH   0
+#define RANGE_ERROR     (-1)
+
+static int
+fnmatch(const char *pattern, const char *string, int flags) {
+	const char *stringstart;
+	char *newp;
+	char c, test;
+
+	for (stringstart = string;;)
+		switch (c = *pattern++) {
+		case EOS:
+			if ((flags & FNM_LEADING_DIR) && *string == '/')
+				return (0);
+			return (*string == EOS ? 0 : FNM_NOMATCH);
+		case '?':
+			if (*string == EOS)
+				return (FNM_NOMATCH);
+			if (*string == '/' && (flags & FNM_PATHNAME))
+				return (FNM_NOMATCH);
+			if (*string == '.' && (flags & FNM_PERIOD) &&
+			    (string == stringstart ||
+			    ((flags & FNM_PATHNAME) && *(string - 1) == '/')))
+				return (FNM_NOMATCH);
+			++string;
+			break;
+		case '*':
+			c = *pattern;
+			/* Collapse multiple stars. */
+			while (c == '*')
+				c = *++pattern;
+
+			if (*string == '.' && (flags & FNM_PERIOD) &&
+			    (string == stringstart ||
+			    ((flags & FNM_PATHNAME) && *(string - 1) == '/')))
+				return (FNM_NOMATCH);
+
+			/* Optimize for pattern with * at end or before /. */
+			if (c == EOS)
+				if (flags & FNM_PATHNAME)
+					return ((flags & FNM_LEADING_DIR) ||
+					    index(string, '/') == NULL ?
+					    0 : FNM_NOMATCH);
+				else
+					return (0);
+			else if (c == '/' && flags & FNM_PATHNAME) {
+				if ((string = index(string, '/')) == NULL)
+					return (FNM_NOMATCH);
+				break;
+			}
+
+			/* General case, use recursion. */
+			while ((test = *string) != EOS) {
+				if (!fnmatch(pattern, string,
+					     flags & ~FNM_PERIOD))
+					return (0);
+				if (test == '/' && flags & FNM_PATHNAME)
+					break;
+				++string;
+			}
+			return (FNM_NOMATCH);
+		case '[':
+			if (*string == EOS)
+				return (FNM_NOMATCH);
+			if (*string == '/' && (flags & FNM_PATHNAME))
+				return (FNM_NOMATCH);
+			if (*string == '.' && (flags & FNM_PERIOD) &&
+			    (string == stringstart ||
+			    ((flags & FNM_PATHNAME) && *(string - 1) == '/')))
+				return (FNM_NOMATCH);
+
+			switch (rangematch(pattern, *string, flags, &newp)) {
+			case RANGE_ERROR:
+				goto norm;
+			case RANGE_MATCH:
+				pattern = newp;
+				break;
+			case RANGE_NOMATCH:
+				return (FNM_NOMATCH);
+			}
+			++string;
+			break;
+		case '\\':
+			if (!(flags & FNM_NOESCAPE)) {
+				if ((c = *pattern++) == EOS) {
+					c = '\\';
+					--pattern;
+				}
+			}
+			/* FALLTHROUGH */
+		default:
+		norm:
+			if (c == *string)
+				;
+			else if ((flags & FNM_CASEFOLD) &&
+				 (tolower((unsigned char)c) ==
+				  tolower((unsigned char)*string)))
+				;
+			else
+				return (FNM_NOMATCH);
+			string++;
+			break;
+		}
+	/* NOTREACHED */
+}
+
+static int
+rangematch(const char *pattern, char test, int flags, char **newp) {
+	int negate, ok;
+	char c, c2;
+
+	/*
+	 * A bracket expression starting with an unquoted circumflex
+	 * character produces unspecified results (IEEE 1003.2-1992,
+	 * 3.13.2).  This implementation treats it like '!', for
+	 * consistency with the regular expression syntax.
+	 * J.T. Conklin (conklin@ngai.kaleida.com)
+	 */
+	if ( (negate = (*pattern == '!' || *pattern == '^')) )
+		++pattern;
+
+	if (flags & FNM_CASEFOLD)
+		test = tolower((unsigned char)test);
+
+	/*
+	 * A right bracket shall lose its special meaning and represent
+	 * itself in a bracket expression if it occurs first in the list.
+	 * -- POSIX.2 2.8.3.2
+	 */
+	ok = 0;
+	c = *pattern++;
+	do {
+		if (c == '\\' && !(flags & FNM_NOESCAPE))
+			c = *pattern++;
+		if (c == EOS)
+			return (RANGE_ERROR);
+
+		if (c == '/' && (flags & FNM_PATHNAME))
+			return (RANGE_NOMATCH);
+
+		if (flags & FNM_CASEFOLD)
+			c = tolower((unsigned char)c);
+
+		if (*pattern == '-'
+		    && (c2 = *(pattern+1)) != EOS && c2 != ']') {
+			pattern += 2;
+			if (c2 == '\\' && !(flags & FNM_NOESCAPE))
+				c2 = *pattern++;
+			if (c2 == EOS)
+				return (RANGE_ERROR);
+
+			if (flags & FNM_CASEFOLD)
+				c2 = tolower((unsigned char)c2);
+
+			if (c <= test && test <= c2)
+				ok = 1;
+		} else if (c == test)
+			ok = 1;
+	} while ((c = *pattern++) != ']');
+
+	*newp = (char *)(uintptr_t)pattern;
+	return (ok == negate ? RANGE_NOMATCH : RANGE_MATCH);
+}
diff --git a/contrib/dlz/modules/wildcard/testing/named.conf b/contrib/dlz/modules/wildcard/testing/named.conf
new file mode 100644
index 0000000..0192e18
--- /dev/null
+++ b/contrib/dlz/modules/wildcard/testing/named.conf
@@ -0,0 +1,58 @@
+/*
+ * Copyright (C) 2013  Internet Systems Consortium, Inc. ("ISC")
+ *
+ * Permission to use, copy, modify, and/or 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.
+ */
+
+controls { };
+
+options {
+	directory ".";
+	port 5300;
+	pid-file "named.pid";
+	session-keyfile "session.key";
+	listen-on { any; };
+	listen-on-v6 { none; };
+	recursion no;
+};
+
+key rndc_key {
+	secret "1234abcd8765";
+	algorithm hmac-md5;
+};
+
+controls {
+	inet 127.0.0.1 port 9953 allow { any; } keys { rndc_key; };
+};
+
+/*
+ * This will match any zone name containing the string "example" and
+ * ending with .com, such as "thisexample.com", "exampleofthat.com",
+ * or "anexampleoftheotherthing.com".
+ */
+dlz "test" {
+	database "dlopen ../dlz_wildcard_dynamic.so
+        *example*.com 10.53.* 1800
+        @      3600    SOA   {ns3.example.nil. support.example.nil. 42 14400 7200 2592000 600}
+        @      3600    NS     ns3.example.nil.
+        @      3600    NS     ns4.example.nil.
+        @      3600    NS     ns8.example.nil.
+        @      3600    MX     {5 mail.example.nil.}
+        ftp    86400   A      192.0.0.1
+        sql    86400   A      192.0.0.2
+        tmp    {}      A      192.0.0.3
+        www    86400   A      192.0.0.3
+        www    86400   AAAA   ::1
+        txt    300     TXT    {\"you requested $record$ in $zone$\"}
+        *      86400   A      192.0.0.100";
+};