[asterisk-commits] mmichelson: trunk r377846 - in /trunk: ./ include/asterisk/ main/ res/ tests/

SVN commits to the Asterisk project asterisk-commits at lists.digium.com
Tue Dec 11 15:04:46 CST 2012


Author: mmichelson
Date: Tue Dec 11 15:04:45 2012
New Revision: 377846

URL: http://svnview.digium.com/svn/asterisk?view=rev&rev=377846
Log:
Add UUID support to Asterisk.

This provides a common API for dealing with unique identifiers.
The API provides methods to create, parse, copy, and stringify UUIDs.

An accompanying unit test is provided that tests all operations.

(closes issue ASTERISK-20725)
reported by Matt Jordan

Review: https://reviewboard.asterisk.org/r/2217


Added:
    trunk/include/asterisk/uuid.h   (with props)
    trunk/main/uuid.c   (with props)
    trunk/tests/test_uuid.c   (with props)
Modified:
    trunk/   (props changed)
    trunk/configure
    trunk/configure.ac
    trunk/include/asterisk/autoconfig.h.in
    trunk/main/Makefile
    trunk/main/asterisk.c
    trunk/main/taskprocessor.c
    trunk/res/res_clialiases.c

Propchange: trunk/
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    automerge = *

Propchange: trunk/
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    automerge-email = mmichelson at digium.com

Propchange: trunk/
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Binary property 'branch-11-merged' - no diff available.

Propchange: trunk/
------------------------------------------------------------------------------
    svnmerge-integrated = /trunk:1-377816

Modified: trunk/configure.ac
URL: http://svnview.digium.com/svn/asterisk/trunk/configure.ac?view=diff&rev=377846&r1=377845&r2=377846
==============================================================================
--- trunk/configure.ac (original)
+++ trunk/configure.ac Tue Dec 11 15:04:45 2012
@@ -489,11 +489,12 @@
 AC_HEADER_SYS_WAIT
 AC_CHECK_HEADERS([arpa/inet.h fcntl.h inttypes.h libintl.h limits.h locale.h malloc.h netdb.h netinet/in.h stddef.h stdint.h stdlib.h string.h strings.h sys/event.h sys/file.h sys/ioctl.h sys/param.h sys/socket.h sys/time.h syslog.h termios.h unistd.h utime.h arpa/nameser.h sys/io.h])
 
-# Any one of these 4 packages support a mandatory requirement, so we want to check on them as early as possible.
+# Any one of these 5 packages support a mandatory requirement, so we want to check on them as early as possible.
 AST_EXT_LIB_CHECK([TERMCAP], [termcap], [tgetent], [])
 AST_EXT_LIB_CHECK([TINFO], [tinfo], [tgetent], [])
 AST_EXT_LIB_CHECK([CURSES], [curses], [initscr], [curses.h])
 AST_EXT_LIB_CHECK([NCURSES], [ncurses], [initscr], [curses.h])
+AST_EXT_LIB_CHECK([UUID], [uuid], [uuid_generate_random], [uuid.h], [-luuid])
 
 EDITLINE_LIB=""
 if test "x$TERMCAP_LIB" != "x" ; then

Modified: trunk/include/asterisk/autoconfig.h.in
URL: http://svnview.digium.com/svn/asterisk/trunk/include/asterisk/autoconfig.h.in?view=diff&rev=377846&r1=377845&r2=377846
==============================================================================
--- trunk/include/asterisk/autoconfig.h.in (original)
+++ trunk/include/asterisk/autoconfig.h.in Tue Dec 11 15:04:45 2012
@@ -848,19 +848,19 @@
 /* Define to 1 if you have the `strtoq' function. */
 #undef HAVE_STRTOQ
 
-/* Define to 1 if `ifr_ifru.ifru_hwaddr' is member of `struct ifreq'. */
+/* Define to 1 if `ifr_ifru.ifru_hwaddr' is a member of `struct ifreq'. */
 #undef HAVE_STRUCT_IFREQ_IFR_IFRU_IFRU_HWADDR
 
-/* Define to 1 if `uid' is member of `struct sockpeercred'. */
+/* Define to 1 if `uid' is a member of `struct sockpeercred'. */
 #undef HAVE_STRUCT_SOCKPEERCRED_UID
 
-/* Define to 1 if `st_blksize' is member of `struct stat'. */
+/* Define to 1 if `st_blksize' is a member of `struct stat'. */
 #undef HAVE_STRUCT_STAT_ST_BLKSIZE
 
-/* Define to 1 if `cr_uid' is member of `struct ucred'. */
+/* Define to 1 if `cr_uid' is a member of `struct ucred'. */
 #undef HAVE_STRUCT_UCRED_CR_UID
 
-/* Define to 1 if `uid' is member of `struct ucred'. */
+/* Define to 1 if `uid' is a member of `struct ucred'. */
 #undef HAVE_STRUCT_UCRED_UID
 
 /* Define to 1 if you have the mISDN Supplemental Services library. */
@@ -1137,6 +1137,9 @@
 
 /* Define to the one symbol short name of this package. */
 #undef PACKAGE_TARNAME
+
+/* Define to the home page for this package. */
+#undef PACKAGE_URL
 
 /* Define to the version of this package. */
 #undef PACKAGE_VERSION

Added: trunk/include/asterisk/uuid.h
URL: http://svnview.digium.com/svn/asterisk/trunk/include/asterisk/uuid.h?view=auto&rev=377846
==============================================================================
--- trunk/include/asterisk/uuid.h (added)
+++ trunk/include/asterisk/uuid.h Tue Dec 11 15:04:45 2012
@@ -1,0 +1,107 @@
+/*
+ * Asterisk -- An open source telephony toolkit.
+ *
+ * Copyright (C) 2012, Digium, Inc.
+ *
+ * Mark Michelson <mmmichelson at digium.com>
+ *
+ * See http://www.asterisk.org for more information about
+ * the Asterisk project. Please do not directly contact
+ * any of the maintainers of this project for assistance;
+ * the project provides a web site, mailing lists and IRC
+ * channels for your use.
+ *
+ * This program is free software, distributed under the terms of
+ * the GNU General Public License Version 2. See the LICENSE file
+ * at the top of the source tree.
+ */
+
+/*! \file
+ * \brief Universally unique identifier support
+ */
+
+#ifndef _ASTERISK_UUID_H
+#define _ASTERISK_UUID_H
+
+/* Size of an RFC 4122 UUID string plus terminating null byte */
+#define AST_UUID_STR_LEN 37
+
+struct ast_uuid;
+
+/*!
+ * \brief Initialize the UUID system
+ */
+void ast_uuid_init(void);
+
+/*!
+ * \brief Generate a UUID
+ *
+ * This function allocates memory on the heap. The returned
+ * pointer must be freed using ast_free()
+ *
+ * \retval NULL Generation failed
+ * \retval non-NULL heap-allocated UUID
+ */
+struct ast_uuid *ast_uuid_generate(void);
+
+/*!
+ * \brief Convert a UUID to a string
+ *
+ * \param uuid The UUID to convert to a string
+ * \param[out] buf The buffer where the UUID string will be stored
+ * \param size The size of the buffer. Must be at least AST_UUID_STR_LEN.
+ * \returns The UUID string (a pointer to buf)
+ */
+char *ast_uuid_to_str(const struct ast_uuid *uuid, char *buf, size_t size);
+
+/*!
+ * \brief Convert a string to a UUID
+ *
+ * This function allocates memory on the heap. The returned
+ * pointer must be freed using ast_free()
+ *
+ * \param str The string to convert to a UUID
+ * \retval NULL Failed to convert
+ * \retval non-NULL The heap-allocated converted UUID
+ */
+struct ast_uuid *ast_str_to_uuid(const char *str);
+
+/*!
+ * \brief Make a copy of a UUID
+ *
+ * This function allocates memory on the heap. The returned
+ * pointer must be freed using ast_free()
+ *
+ * \param src The source UUID to copy
+ * \retval NULL Failed to copy
+ * \retval non-NULL The heap-allocated duplicate UUID
+ */
+struct ast_uuid *ast_uuid_copy(const struct ast_uuid *src);
+
+/*!
+ * \brief Compare two UUIDs
+ *
+ * \param left First UUID to compare
+ * \param right Second UUID to compare
+ * \retval <0 left is lexicographically less than right
+ * \retval 0 left and right are the same
+ * \retval >0 left is lexicographically greater than right
+ */
+int ast_uuid_compare(const struct ast_uuid *left, const struct ast_uuid *right);
+
+/*!
+ * \brief Clear a UUID by setting it to be a nil UUID (all 0s)
+ *
+ * \param uuid UUID to clear
+ */
+void ast_uuid_clear(struct ast_uuid *uuid);
+
+/*!
+ * \brief Check if a UUID is a nil UUID (all 0s)
+ *
+ * \param uuid UUID to check
+ * \retval 0 The UUID is not nil
+ * \retval non-zero The UUID is nil
+ */
+int ast_uuid_is_nil(const struct ast_uuid *uuid);
+#endif

Propchange: trunk/include/asterisk/uuid.h
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Modified: trunk/main/Makefile
URL: http://svnview.digium.com/svn/asterisk/trunk/main/Makefile?view=diff&rev=377846&r1=377845&r2=377846
==============================================================================
--- trunk/main/Makefile (original)
+++ trunk/main/Makefile Tue Dec 11 15:04:45 2012
@@ -43,7 +43,7 @@
   ifneq (x$(CAP_LIB),x)
     AST_LIBS+=$(CAP_LIB)
   endif
-  AST_LIBS+=-lpthread $(EDITLINE_LIB) -lm -lresolv
+  AST_LIBS+=-lpthread $(EDITLINE_LIB) -lm -lresolv -luuid
 else
   AST_LIBS+=$(EDITLINE_LIB) -lm
 endif

Modified: trunk/main/asterisk.c
URL: http://svnview.digium.com/svn/asterisk/trunk/main/asterisk.c?view=diff&rev=377846&r1=377845&r2=377846
==============================================================================
--- trunk/main/asterisk.c (original)
+++ trunk/main/asterisk.c Tue Dec 11 15:04:45 2012
@@ -238,6 +238,7 @@
 #include "asterisk/rtp_engine.h"
 #include "asterisk/format.h"
 #include "asterisk/aoc.h"
+#include "asterisk/uuid.h"
 
 #include "../defaults.h"
 
@@ -4112,6 +4113,7 @@
 	}
 
 	ast_aoc_cli_init();
+	ast_uuid_init();
 
 	ast_makesocket();
 	sigemptyset(&sigs);

Modified: trunk/main/taskprocessor.c
URL: http://svnview.digium.com/svn/asterisk/trunk/main/taskprocessor.c?view=diff&rev=377846&r1=377845&r2=377846
==============================================================================
--- trunk/main/taskprocessor.c (original)
+++ trunk/main/taskprocessor.c Tue Dec 11 15:04:45 2012
@@ -122,15 +122,10 @@
 	AST_CLI_DEFINE(cli_tps_report, "List instantiated task processors and statistics"),
 };
 
-/*!
- * \internal
- * \brief Clean up resources on Asterisk shutdown
- */
+/*! \internal \brief Clean up resources on Asterisk shutdown */
 static void tps_shutdown(void)
 {
-	ast_cli_unregister_multiple(taskprocessor_clis, ARRAY_LEN(taskprocessor_clis));
 	ao2_t_ref(tps_singletons, -1, "Unref tps_singletons in shutdown");
-	tps_singletons = NULL;
 }
 
 /* initialize the taskprocessor container and register CLI operations */

Added: trunk/main/uuid.c
URL: http://svnview.digium.com/svn/asterisk/trunk/main/uuid.c?view=auto&rev=377846
==============================================================================
--- trunk/main/uuid.c (added)
+++ trunk/main/uuid.c Tue Dec 11 15:04:45 2012
@@ -1,0 +1,206 @@
+/*
+ * Asterisk -- An open source telephony toolkit.
+ *
+ * Copyright (C) 2012, Digium, Inc.
+ *
+ * Mark Michelson <mmmichelson at digium.com>
+ *
+ * See http://www.asterisk.org for more information about
+ * the Asterisk project. Please do not directly contact
+ * any of the maintainers of this project for assistance;
+ * the project provides a web site, mailing lists and IRC
+ * channels for your use.
+ *
+ * This program is free software, distributed under the terms of
+ * the GNU General Public License Version 2. See the LICENSE file
+ * at the top of the source tree.
+ */
+
+/*! \file
+ * \brief Universally unique identifier support
+ */
+
+#include "asterisk.h"
+#include <uuid/uuid.h>
+#include <fcntl.h>
+
+#include "asterisk/uuid.h"
+#include "asterisk/utils.h"
+#include "asterisk/strings.h"
+#include "asterisk/logger.h"
+#include "asterisk/lock.h"
+
+AST_MUTEX_DEFINE_STATIC(uuid_lock);
+
+static int has_dev_urandom;
+
+struct ast_uuid {
+	uuid_t uu;
+};
+
+struct ast_uuid *ast_uuid_generate(void)
+{
+	struct ast_uuid *uuid = ast_malloc(sizeof(*uuid));
+
+	if (!uuid) {
+		return NULL;
+	}
+	/* libuuid provides three methods of generating uuids,
+	 * uuid_generate(), uuid_generate_random(), and uuid_generate_time().
+	 *
+	 * uuid_generate_random() creates a UUID based on random numbers. The method
+	 * attempts to use either /dev/urandom or /dev/random to generate random values.
+	 * If these resources are unavailable, then random numbers will be generated
+	 * using C library calls to generate pseudorandom numbers.
+	 * This method of generating UUIDs corresponds to section 4.4 of RFC 4122.
+	 *
+	 * uuid_generate_time() creates a UUID based on the current time plus
+	 * a system identifier (MAC address of the ethernet interface). This
+	 * method of generating UUIDs corresponds to section 4.2 of RFC 4122.
+	 *
+	 * uuid_generate() will check if /dev/urandom or /dev/random is available to
+	 * use. If so, it will use uuid_generate_random(). Otherwise, it will use
+	 * uuid_generate_time(). The idea is that it avoids using pseudorandom
+	 * numbers if necessary.
+	 *
+	 * For our purposes, we do not use the time-based UUID at all. There are
+	 * several reasons for this:
+	 *
+	 * 1) The time-based algorithm makes use of a daemon process (uuidd) in order
+	 * to ensure that any concurrent requests for UUIDs result in unique results.
+	 * Use of this daemon is a bit dodgy for a few reasons
+	 *
+	 *     a) libuuid assumes a hardcoded location for the .pid file of the daemon.
+	 *     However, the daemon could already be running on the system in a different
+	 *     location than expected. If this is the case, then attempting to connect
+	 *     to the daemon will fail, and attempting to launch another instance in
+	 *     the expected location will also fail.
+	 *
+	 *     b) If the daemon is not running, then the first attempt to create a
+	 *     time-based UUID will result in launching the daemon. Because of the hard-
+	 *     coded locations that libuuid assumes for the daemon, Asterisk must be
+	 *     run with permissions that will allow for the daemon to be launched in
+	 *     the expected directories.
+	 *
+	 *     c) Once the daemon is running, concurrent requests for UUIDs are thread-safe.
+	 *     However, the actual launching of the daemon is not thread-safe since libuuid
+	 *     uses no synchronization primitives to ensure that only one thread (or process)
+	 *     launches the daemon.
+	 *
+	 *     d) When libuuid launches the daemon, it sets an inactivity timer.
+	 *     If no UUID generation requests are issued in that time period,
+	 *     then the daemon will exit. If a new request should occur after the daemon
+	 *     exits, then the daemon will be relaunched. Given point c), we cannot
+	 *     necessarily guarantee the thread-safety of time-based UUID generation since
+	 *     we cannot necessarily guarantee the daemon is running as we expect.
+	 *     We could set up a watchdog thread to generate UUIDs at regular intervals to
+	 *     prevent the daemon from exiting, but frankly, that sucks.
+	 *
+	 * 2) Since the MAC address of the Ethernet interface is part of the UUID when
+	 * using the time-based method, there is information leaked.
+	 *
+	 * Given these drawbacks, we stick to only using random UUIDs. The chance of /dev/random
+	 * or /dev/urandom not existing on systems in this age is next to none.
+	 */
+
+	/* XXX Currently, we only protect this call if the user has no /dev/urandon on their system.
+	 * If it turns out that there are issues with UUID generation despite the presence of
+	 * /dev/urandom, then we may need to make the locking/unlocking unconditional.
+	 */
+	if (!has_dev_urandom) {
+		ast_mutex_lock(&uuid_lock);
+	}
+	uuid_generate_random(uuid->uu);
+	if (!has_dev_urandom) {
+		ast_mutex_unlock(&uuid_lock);
+	}
+	return uuid;
+}
+
+char *ast_uuid_to_str(const struct ast_uuid *uuid, char *buf, size_t size)
+{
+	ast_assert(size >= AST_UUID_STR_LEN);
+	uuid_unparse_lower(uuid->uu, buf);
+	return buf;
+}
+
+struct ast_uuid *ast_str_to_uuid(const char *str)
+{
+	struct ast_uuid *uuid = ast_malloc(sizeof(*uuid));
+	int res;
+	if (!uuid) {
+		return NULL;
+	}
+	res = uuid_parse(str, uuid->uu);
+	if (res) {
+		ast_log(LOG_WARNING, "Unable to convert string %s into a UUID\n", str);
+		ast_free(uuid);
+		return NULL;
+	}
+	return uuid;
+}
+
+struct ast_uuid *ast_uuid_copy(const struct ast_uuid *src)
+{
+	struct ast_uuid *dst = ast_malloc(sizeof(*dst));
+	if (!dst) {
+		return NULL;
+	}
+	uuid_copy(dst->uu, src->uu);
+	return dst;
+}
+
+int ast_uuid_compare(const struct ast_uuid *left, const struct ast_uuid *right)
+{
+	return uuid_compare(left->uu, right->uu);
+}
+
+void ast_uuid_clear(struct ast_uuid *uuid)
+{
+	uuid_clear(uuid->uu);
+}
+
+int ast_uuid_is_nil(const struct ast_uuid *uuid)
+{
+	return uuid_is_null(uuid->uu);
+}
+
+void ast_uuid_init(void)
+{
+	/* This requires some explanation.
+	 *
+	 * libuuid generates UUIDs based on random number generation. This involves
+	 * opening a handle to /dev/urandom or /dev/random in order to get random
+	 * data for the UUIDs.
+	 *
+	 * This is thread-safe, to a point. The problem is that the first attempt
+	 * to generate a UUID will result in opening the random number handle. Once
+	 * the handle is opened, all further generation is thread safe. This
+	 * first generation can be potentially risky if multiple threads attempt
+	 * to generate a UUID at the same time, though, since there is no thread
+	 * synchronization used within libuuid. To get around this potential
+	 * issue, we go ahead and generate a UUID up front so that the underlying
+	 * work is done before we start requesting UUIDs for real.
+	 *
+	 * Think of this along the same lines as initializing a singleton.
+	 */
+	uuid_t uu;
+	int dev_urandom_fd;
+
+	dev_urandom_fd = open("/dev/urandom", O_RDONLY);
+	if (dev_urandom_fd < 0) {
+		ast_log(LOG_WARNING, "It appears your system does not have /dev/urandom on it. This\n"
+				"means that UUID generation will use a pseudorandom number generator. Since\n"
+				"the thread-safety of your system's random number generator cannot\n"
+				"be guaranteed, we have to synchronize UUID generation. This may result\n"
+				"in decreased performance. It is highly recommended that you set up your\n"
+				"system to have /dev/urandom\n");
+	} else {
+		has_dev_urandom = 1;
+		close(dev_urandom_fd);
+	}
+	uuid_generate_random(uu);
+
+	ast_debug(1, "UUID system initiated\n");
+	return;
+}

Propchange: trunk/main/uuid.c
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Propchange: trunk/main/uuid.c
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Modified: trunk/res/res_clialiases.c
URL: http://svnview.digium.com/svn/asterisk/trunk/res/res_clialiases.c?view=diff&rev=377846&r1=377845&r2=377846
==============================================================================
--- trunk/res/res_clialiases.c (original)
+++ trunk/res/res_clialiases.c Tue Dec 11 15:04:45 2012
@@ -218,10 +218,7 @@
 			alias->cli_entry.command = alias->alias;
 			alias->cli_entry.usage = "Aliased CLI Command\n";
 
-			if (ast_cli_register(&alias->cli_entry)) {
-				ao2_ref(alias, -1);
-				continue;
-			}
+			ast_cli_register(&alias->cli_entry);
 			ao2_link(cli_aliases, alias);
 			ast_verb(2, "Aliased CLI command '%s' to '%s'\n", v1->name, v1->value);
 			ao2_ref(alias, -1);

Added: trunk/tests/test_uuid.c
URL: http://svnview.digium.com/svn/asterisk/trunk/tests/test_uuid.c?view=auto&rev=377846
==============================================================================
--- trunk/tests/test_uuid.c (added)
+++ trunk/tests/test_uuid.c Tue Dec 11 15:04:45 2012
@@ -1,0 +1,136 @@
+/*
+ * Asterisk -- An open source telephony toolkit.
+ *
+ * Copyright (C) 2012, Digium, Inc.
+ *
+ * Mark Michelson <mmmichelson at digium.com>
+ *
+ * See http://www.asterisk.org for more information about
+ * the Asterisk project. Please do not directly contact
+ * any of the maintainers of this project for assistance;
+ * the project provides a web site, mailing lists and IRC
+ * channels for your use.
+ *
+ * This program is free software, distributed under the terms of
+ * the GNU General Public License Version 2. See the LICENSE file
+ * at the top of the source tree.
+ */
+
+/*! \file
+ * \brief Universally unique identifier tests
+ */
+
+/*** MODULEINFO
+	<depend>TEST_FRAMEWORK</depend>
+	<support_level>core</support_level>
+ ***/
+
+#include "asterisk.h"
+#include "asterisk/test.h"
+#include "asterisk/uuid.h"
+#include "asterisk/module.h"
+
+AST_TEST_DEFINE(uuid)
+{
+	struct ast_uuid *uuid1 = NULL;
+	struct ast_uuid *uuid2 = NULL;
+	struct ast_uuid *uuid3 = NULL;
+	char uuid_str[AST_UUID_STR_LEN];
+	enum ast_test_result_state res = AST_TEST_FAIL;
+
+	switch (cmd) {
+	case TEST_INIT:
+		info->name = "uuid";
+		info->category = "/main/uuid/";
+		info->summary = "UUID unit test";
+		info->description =
+			"This tests basic UUID operations to ensure they work properly";
+		return AST_TEST_NOT_RUN;
+	case TEST_EXECUTE:
+		break;
+	}
+
+	/* First, make sure that we can generate a UUID */
+	uuid1 = ast_uuid_generate();
+	if (!uuid1) {
+		ast_test_status_update(test, "Unable to generate a UUID\n");
+		goto end;
+	}
+
+	/* Make sure we're not generating nil UUIDs */
+	if (ast_uuid_is_nil(uuid1)) {
+		ast_test_status_update(test, "We generated a nil UUID. Something is wrong\n");
+		goto end;
+	}
+
+	/* Convert it to a string */
+	ast_uuid_to_str(uuid1, uuid_str, sizeof(uuid_str));
+
+	if (strlen(uuid_str) != (AST_UUID_STR_LEN - 1)) {
+		ast_test_status_update(test, "Failed to convert the UUID to a string\n");
+		goto end;
+	}
+
+	ast_test_status_update(test, "Converted uuid to string, got %s\n", uuid_str);
+
+	/* Now convert the string back to a UUID */
+	uuid2 = ast_str_to_uuid(uuid_str);
+	if (!uuid2) {
+		ast_test_status_update(test, "Unable to convert string %s to UUID\n", uuid_str);
+		goto end;
+	}
+
+	/* Make sure the UUIDs are identical */
+	if (ast_uuid_compare(uuid1, uuid2) != 0) {
+		ast_test_status_update(test, "UUIDs that should be identical are different\n");
+		goto end;
+	}
+
+	/* Try copying a UUID */
+	uuid3 = ast_uuid_copy(uuid1);
+	if (!uuid3) {
+		ast_test_status_update(test, "Unable to copy UUID\n");
+		goto end;
+	}
+
+	/* Make sure copied UUIDs are identical */
+	if (ast_uuid_compare(uuid1, uuid3) != 0) {
+		ast_test_status_update(test, "UUIDs that should be identical are different\n");
+		goto end;
+	}
+
+	if (ast_uuid_compare(uuid2, uuid3) != 0) {
+		ast_test_status_update(test, "UUIDs that should be identical are different\n");
+		goto end;
+	}
+
+	/* Clear a UUID and ensure that it registers as nil */
+	ast_uuid_clear(uuid1);
+
+	if (!ast_uuid_is_nil(uuid1)) {
+		ast_test_status_update(test, "UUID that was cleared does not appear to be nil\n");
+		goto end;
+	}
+
+	res = AST_TEST_PASS;
+
+end:
+	ast_free(uuid1);
+	ast_free(uuid2);
+	ast_free(uuid3);
+	return res;
+}
+
+static int unload_module(void)
+{
+	AST_TEST_UNREGISTER(uuid);
+	return 0;
+}
+
+static int load_module(void)
+{
+	AST_TEST_REGISTER(uuid);
+	return AST_MODULE_LOAD_SUCCESS;
+}
+
+AST_MODULE_INFO_STANDARD(ASTERISK_GPL_KEY, "UUID test module");

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