static void queue_auth_client (auth_client *auth_user, mount_proxy *mountinfo)
{
auth_t *auth;
client_t *failed = NULL;
auth_client **old_tail;
if (auth_user == NULL || mountinfo == NULL)
return;
auth = mountinfo->auth;
thread_mutex_lock (&auth->lock);
auth_user->next = NULL;
auth_user->auth = auth;
old_tail = auth->tailp;
*auth->tailp = auth_user;
auth->tailp = &auth_user->next;
auth->pending_count++;
if (auth->refcount > auth->handlers)
DEBUG0 ("max authentication handlers allocated");
else
{
int i;
for (i=0; i<auth->handlers; i++)
{
if (auth->handles [i].thread == NULL)
{
DEBUG1 ("starting auth thread %d", i);
auth->refcount++;
auth->handles [i].thread = thread_create ("auth thread", auth_run_thread, &auth->handles [i], THREAD_DETACHED);
if (auth->handles [i].thread == NULL)
{
auth->tailp = old_tail;
*old_tail = NULL;
auth->pending_count--;
auth->refcount--;
failed = auth_user->client;
auth_user->client = NULL;
ERROR0 ("failed to start auth thread, system limit probably reached");
}
break;
}
}
}
DEBUG2 ("auth on %s has %d pending", auth->mount, auth->pending_count);
thread_mutex_unlock (&auth->lock);
if (failed)
{
client_send_403redirect (failed, auth_user->mount, "system limit reached");
auth_client_free (auth_user);
}
}
/* The auth thread main loop. */
static void *auth_run_thread (void *arg)
{
auth_t *auth = arg;
ICECAST_LOG_INFO("Authentication thread started");
while (auth->running)
{
/* usually no clients are waiting, so don't bother taking locks */
if (auth->head)
{
auth_client *auth_user;
/* may become NULL before lock taken */
thread_mutex_lock (&auth->lock);
auth_user = (auth_client*)auth->head;
if (auth_user == NULL)
{
thread_mutex_unlock (&auth->lock);
continue;
}
ICECAST_LOG_DEBUG("%d client(s) pending on %s", auth->pending_count, auth->mount);
auth->head = auth_user->next;
if (auth->head == NULL)
auth->tailp = &auth->head;
auth->pending_count--;
thread_mutex_unlock (&auth->lock);
auth_user->next = NULL;
if (auth_user->process)
auth_user->process (auth, auth_user);
else
ICECAST_LOG_ERROR("client auth process not set");
auth_client_free (auth_user);
continue;
}
thread_sleep (150000);
}
ICECAST_LOG_INFO("Authenication thread shutting down");
return NULL;
}
/* The auth thread main loop. */
static void *auth_run_thread (void *arg)
{
auth_thread_t *handler = arg;
auth_t *auth = handler->auth;
DEBUG2 ("Authentication thread %d started for %s", handler->id, auth->mount);
thread_rwlock_rlock (&auth_lock);
while (1)
{
thread_mutex_lock (&auth->lock);
if (auth->head)
{
auth_client *auth_user = auth->head;
DEBUG2 ("%d client(s) pending on %s", auth->pending_count, auth->mount);
auth->head = auth_user->next;
if (auth->head == NULL)
auth->tailp = &auth->head;
auth->pending_count--;
thread_mutex_unlock (&auth->lock);
auth_user->next = NULL;
/* associate per-thread data with auth_user here */
auth_user->thread_data = handler->data;
auth_user->handler = handler->id;
if (auth_user->process)
auth_user->process (auth_user);
auth_client_free (auth_user);
continue;
}
handler->thread = NULL;
break;
}
DEBUG1 ("Authenication thread %d shutting down", handler->id);
auth_release (auth);
thread_rwlock_unlock (&auth_lock);
return NULL;
}