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Add uuid wrapper API call ast_uuid_generate_str().

Browse Source 
* Updated test_uuid.c to test the new API call.

* Made system use the new API call to eliminate "10's of lines" where
used.

* Fixed untested ast_strdup() return in stasis_subscribe() by eliminating
the need for it.  struct stasis_subscription now contains the uniqueid[]
string.

* Fixed some issues in exchangecal_write_event():
  Create uid with enough space for a UUID string to avoid a realloc.
  Fix off by one error if the calendar event provided a UUID string.
  There is no need to check for NULL before calling ast_free().


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@384302 65c4cc65-6c06-0410-ace0-fbb531ad65f3
This commit is contained in:
Richard Mudgett
2013-03-28 23:59:20 +00:00
parent 71206544a7
commit a1c94fece8
7 changed files with 101 additions and 91 deletions
Download Patch File Download Diff File Expand all files Collapse all files

15
include/asterisk/uuid.h
View File

@@ -24,7 +24,7 @@
#define _ASTERISK_UUID_H
/* Size of an RFC 4122 UUID string plus terminating null byte */
#define AST_UUID_STR_LEN 37
#define AST_UUID_STR_LEN (36 + 1)
struct ast_uuid;
@@ -50,10 +50,21 @@ struct ast_uuid *ast_uuid_generate(void);
* \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)
* \return The UUID string (a pointer to buf)
*/
char *ast_uuid_to_str(const struct ast_uuid *uuid, char *buf, size_t size);
/*!
* \brief Generate a UUID string.
* \since 12.0.0
*
* \param 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.
*
* \return The UUID string (a pointer to buf)
*/
char *ast_uuid_generate_str(char *buf, size_t size);
/*!
* \brief Convert a string to a UUID
*

10
main/sorcery.c
View File

@@ -807,15 +807,7 @@ void *ast_sorcery_alloc(const struct ast_sorcery *sorcery, const char *type, con
}
if (ast_strlen_zero(id)) {
struct ast_uuid *uuid = ast_uuid_generate();
if (!uuid) {
ao2_ref(details, -1);
return NULL;
}
ast_uuid_to_str(uuid, details->id, AST_UUID_STR_LEN);
ast_free(uuid);
ast_uuid_generate_str(details->id, sizeof(details->id));
} else {
ast_copy_string(details->id, id, sizeof(details->id));
}

18
main/stasis.c
View File

@@ -106,7 +106,7 @@ const char *stasis_topic_name(const struct stasis_topic *topic)
/*! \internal */
struct stasis_subscription {
/*! Unique ID for this subscription */
char *uniqueid;
char uniqueid[AST_UUID_STR_LEN];
/*! Topic subscribed to. */
struct stasis_topic *topic;
/*! Mailbox for processing incoming messages. */
@@ -121,8 +121,6 @@ static void subscription_dtor(void *obj)
{
struct stasis_subscription *sub = obj;
ast_assert(!stasis_subscription_is_subscribed(sub));
ast_free(sub->uniqueid);
sub->uniqueid = NULL;
ao2_cleanup(sub->topic);
sub->topic = NULL;
ast_taskprocessor_unreference(sub->mailbox);
@@ -134,27 +132,19 @@ static void send_subscription_change_message(struct stasis_topic *topic, char *u
struct stasis_subscription *stasis_subscribe(struct stasis_topic *topic, stasis_subscription_cb callback, void *data)
{
RAII_VAR(struct stasis_subscription *, sub, NULL, ao2_cleanup);
RAII_VAR(struct ast_uuid *, id, NULL, ast_free);
char uniqueid[AST_UUID_STR_LEN];
sub = ao2_alloc(sizeof(*sub), subscription_dtor);
if (!sub) {
return NULL;
}
id = ast_uuid_generate();
if (!id) {
ast_log(LOG_ERROR, "UUID generation failed\n");
return NULL;
}
ast_uuid_to_str(id, uniqueid, sizeof(uniqueid));
ast_uuid_generate_str(sub->uniqueid, sizeof(sub->uniqueid));
sub->mailbox = ast_threadpool_serializer(uniqueid, pool);
sub->mailbox = ast_threadpool_serializer(sub->uniqueid, pool);
if (!sub->mailbox) {
return NULL;
}
sub->uniqueid = ast_strdup(uniqueid);
ao2_ref(topic, +1);
sub->topic = topic;
sub->callback = callback;
@@ -163,7 +153,7 @@ struct stasis_subscription *stasis_subscribe(struct stasis_topic *topic, stasis_
if (topic_add_subscription(topic, sub) != 0) {
return NULL;
}
send_subscription_change_message(topic, uniqueid, "Subscribe");
send_subscription_change_message(topic, sub->uniqueid, "Subscribe");
ao2_ref(sub, +1);
return sub;

37
main/uuid.c
View File

@@ -38,13 +38,17 @@ struct ast_uuid {
uuid_t uu;
};
struct ast_uuid *ast_uuid_generate(void)
/*!
* \internal
* \brief Generate a UUID.
* \since 12.0.0
*
* \param uuid Fill this with a generated UUID.
*
* \return Nothing
*/
static void generate_uuid(struct ast_uuid *uuid)
{
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().
*
@@ -114,6 +118,16 @@ struct ast_uuid *ast_uuid_generate(void)
if (!has_dev_urandom) {
ast_mutex_unlock(&uuid_lock);
}
}
struct ast_uuid *ast_uuid_generate(void)
{
struct ast_uuid *uuid = ast_malloc(sizeof(*uuid));
if (!uuid) {
return NULL;
}
generate_uuid(uuid);
return uuid;
}
@@ -124,10 +138,19 @@ char *ast_uuid_to_str(const struct ast_uuid *uuid, char *buf, size_t size)
return buf;
}
char *ast_uuid_generate_str(char *buf, size_t size)
{
struct ast_uuid uuid;
generate_uuid(&uuid);
return ast_uuid_to_str(&uuid, buf, size);
}
struct ast_uuid *ast_str_to_uuid(const char *str)
{
struct ast_uuid *uuid = ast_malloc(sizeof(*uuid));
int res;
if (!uuid) {
return NULL;
}
@@ -143,6 +166,7 @@ struct ast_uuid *ast_str_to_uuid(const char *str)
struct ast_uuid *ast_uuid_copy(const struct ast_uuid *src)
{
struct ast_uuid *dst = ast_malloc(sizeof(*dst));
if (!dst) {
return NULL;
}
@@ -202,5 +226,4 @@ void ast_uuid_init(void)
uuid_generate_random(uu);
ast_debug(1, "UUID system initiated\n");
return;
}

83
res/res_calendar_exchange.c
View File

@@ -243,17 +243,9 @@ static void *unref_exchangecal(void *obj)
static struct ast_str *generate_exchange_uuid(struct ast_str *uid)
{
char buffer[AST_UUID_STR_LEN];
struct ast_uuid *uuid = ast_uuid_generate();
if (!uuid) {
ast_str_set(&uid, 0, "%s", "");
return uid;
}
ast_str_set(&uid, 0, "%s", ast_uuid_to_str(uuid, buffer, AST_UUID_STR_LEN));
ast_free(uuid);
ast_uuid_generate_str(buffer, sizeof(buffer));
ast_str_set(&uid, 0, "%s", buffer);
return uid;
}
@@ -414,9 +406,17 @@ static struct ast_str *exchangecal_request(struct exchangecal_pvt *pvt, const ch
static int exchangecal_write_event(struct ast_calendar_event *event)
{
struct ast_str *body = NULL, *response = NULL, *subdir = NULL;
struct ast_str *uid = NULL, *summary = NULL, *description = NULL, *organizer = NULL,
*location = NULL, *start = NULL, *end = NULL, *busystate = NULL;
struct ast_str *body = NULL;
struct ast_str *response = NULL;
struct ast_str *subdir = NULL;
struct ast_str *uid = NULL;
struct ast_str *summary = NULL;
struct ast_str *description = NULL;
struct ast_str *organizer = NULL;
struct ast_str *location = NULL;
struct ast_str *start = NULL;
struct ast_str *end = NULL;
struct ast_str *busystate = NULL;
int ret = -1;
if (!event) {
@@ -434,7 +434,7 @@ static int exchangecal_write_event(struct ast_calendar_event *event)
goto write_cleanup;
}
if (!(uid = ast_str_create(32)) ||
if (!(uid = ast_str_create(AST_UUID_STR_LEN)) ||
!(summary = ast_str_create(32)) ||
!(description = ast_str_create(32)) ||
!(organizer = ast_str_create(32)) ||
@@ -449,7 +449,7 @@ static int exchangecal_write_event(struct ast_calendar_event *event)
if (ast_strlen_zero(event->uid)) {
uid = generate_exchange_uuid(uid);
} else {
ast_str_set(&uid, 36, "%s", event->uid);
ast_str_set(&uid, AST_UUID_STR_LEN, "%s", event->uid);
}
if (!is_valid_uuid(uid)) {
@@ -496,7 +496,14 @@ static int exchangecal_write_event(struct ast_calendar_event *event)
" </a:prop>\n"
" </a:set>\n"
"</a:propertyupdate>\n",
ast_str_buffer(uid), ast_str_buffer(summary), ast_str_buffer(description), ast_str_buffer(organizer), ast_str_buffer(location), ast_str_buffer(start), ast_str_buffer(end), ast_str_buffer(busystate));
ast_str_buffer(uid),
ast_str_buffer(summary),
ast_str_buffer(description),
ast_str_buffer(organizer),
ast_str_buffer(location),
ast_str_buffer(start),
ast_str_buffer(end),
ast_str_buffer(busystate));
ast_verb(0, "\n\n%s\n\n", ast_str_buffer(body));
ast_str_set(&subdir, 0, "/Calendar/%s.eml", ast_str_buffer(uid));
@@ -505,39 +512,17 @@ static int exchangecal_write_event(struct ast_calendar_event *event)
}
write_cleanup:
if (uid) {
ast_free(uid);
}
if (summary) {
ast_free(summary);
}
if (description) {
ast_free(description);
}
if (organizer) {
ast_free(organizer);
}
if (location) {
ast_free(location);
}
if (start) {
ast_free(start);
}
if (end) {
ast_free(end);
}
if (busystate) {
ast_free(busystate);
}
if (body) {
ast_free(body);
}
if (response) {
ast_free(response);
}
if (subdir) {
ast_free(subdir);
}
ast_free(uid);
ast_free(summary);
ast_free(description);
ast_free(organizer);
ast_free(location);
ast_free(start);
ast_free(end);
ast_free(busystate);
ast_free(body);
ast_free(response);
ast_free(subdir);
return ret;
}

9
res/res_sorcery_config.c
View File

@@ -305,19 +305,12 @@ static void *sorcery_config_open(const char *data)
{
char *tmp = ast_strdupa(data), *filename = strsep(&tmp, ","), *option;
struct sorcery_config *config;
struct ast_uuid *uuid;
if (ast_strlen_zero(filename) || !(config = ao2_alloc_options(sizeof(*config) + strlen(filename) + 1, sorcery_config_destructor, AO2_ALLOC_OPT_LOCK_NOLOCK))) {
return NULL;
}
if (!(uuid = ast_uuid_generate())) {
ao2_ref(config, -1);
return NULL;
}
ast_uuid_to_str(uuid, config->uuid, AST_UUID_STR_LEN);
ast_free(uuid);
ast_uuid_generate_str(config->uuid, sizeof(config->uuid));
ast_rwlock_init(&config->objects.lock);
config->buckets = DEFAULT_OBJECT_BUCKETS;

20
tests/test_uuid.c
View File

@@ -50,7 +50,23 @@ AST_TEST_DEFINE(uuid)
break;
}
/* First, make sure that we can generate a UUID */
/* Use method of generating UUID directly as a string. */
ast_uuid_generate_str(uuid_str, sizeof(uuid_str));
if (strlen(uuid_str) != (AST_UUID_STR_LEN - 1)) {
ast_test_status_update(test, "Failed to directly generate UUID string\n");
goto end;
}
ast_test_status_update(test, "Generate UUID direct to string, got %s\n", uuid_str);
/* Now convert the direct UUID string to a UUID */
uuid1 = ast_str_to_uuid(uuid_str);
if (!uuid1) {
ast_test_status_update(test, "Unable to convert direct UUID string %s to UUID\n", uuid_str);
goto end;
}
ast_free(uuid1);
/* 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");
@@ -71,7 +87,7 @@ AST_TEST_DEFINE(uuid)
goto end;
}
ast_test_status_update(test, "Converted uuid to string, got %s\n", uuid_str);
ast_test_status_update(test, "Second generated UUID converted to string, got %s\n", uuid_str);
/* Now convert the string back to a UUID */
uuid2 = ast_str_to_uuid(uuid_str);