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-rw-r--r--src/libstrongswan/networking/streams/stream_manager.c235
1 files changed, 235 insertions, 0 deletions
diff --git a/src/libstrongswan/networking/streams/stream_manager.c b/src/libstrongswan/networking/streams/stream_manager.c
new file mode 100644
index 000000000..2cbd6127e
--- /dev/null
+++ b/src/libstrongswan/networking/streams/stream_manager.c
@@ -0,0 +1,235 @@
+/*
+ * Copyright (C) 2013 Martin Willi
+ * Copyright (C) 2013 revosec AG
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * for more details.
+ */
+
+#include "stream_manager.h"
+
+#include <threading/rwlock.h>
+
+typedef struct private_stream_manager_t private_stream_manager_t;
+
+/**
+ * Private data of an stream_manager_t object.
+ */
+struct private_stream_manager_t {
+
+ /**
+ * Public stream_manager_t interface.
+ */
+ stream_manager_t public;
+
+ /**
+ * List of registered stream constructors, as stream_entry_t
+ */
+ linked_list_t *streams;
+
+ /**
+ * List of registered service constructors, as service_entry_t
+ */
+ linked_list_t *services;
+
+ /**
+ * Lock for all lists
+ */
+ rwlock_t *lock;
+};
+
+/**
+ * Registered stream backend
+ */
+typedef struct {
+ /** URI prefix */
+ char *prefix;
+ /** constructor function */
+ stream_constructor_t create;
+} stream_entry_t;
+
+/**
+ * Registered service backend
+ */
+typedef struct {
+ /** URI prefix */
+ char *prefix;
+ /** constructor function */
+ stream_service_constructor_t create;
+} service_entry_t;
+
+METHOD(stream_manager_t, connect_, stream_t*,
+ private_stream_manager_t *this, char *uri)
+{
+ enumerator_t *enumerator;
+ stream_entry_t *entry;
+ stream_t *stream = NULL;
+
+ this->lock->read_lock(this->lock);
+ enumerator = this->streams->create_enumerator(this->streams);
+ while (enumerator->enumerate(enumerator, &entry))
+ {
+ if (strpfx(uri, entry->prefix))
+ {
+ stream = entry->create(uri);
+ if (stream)
+ {
+ break;
+ }
+ }
+ }
+ enumerator->destroy(enumerator);
+ this->lock->unlock(this->lock);
+
+ return stream;
+}
+
+METHOD(stream_manager_t, create_service, stream_service_t*,
+ private_stream_manager_t *this, char *uri, int backlog)
+{
+ enumerator_t *enumerator;
+ service_entry_t *entry;
+ stream_service_t *service = NULL;
+
+ this->lock->read_lock(this->lock);
+ enumerator = this->services->create_enumerator(this->services);
+ while (enumerator->enumerate(enumerator, &entry))
+ {
+ if (strpfx(uri, entry->prefix))
+ {
+ service = entry->create(uri, backlog);
+ if (service)
+ {
+ break;
+ }
+ }
+ }
+ enumerator->destroy(enumerator);
+ this->lock->unlock(this->lock);
+
+ return service;
+}
+
+METHOD(stream_manager_t, add_stream, void,
+ private_stream_manager_t *this, char *prefix, stream_constructor_t create)
+{
+ stream_entry_t *entry;
+
+ INIT(entry,
+ .prefix = strdup(prefix),
+ .create = create,
+ );
+
+ this->lock->write_lock(this->lock);
+ this->streams->insert_last(this->streams, entry);
+ this->lock->unlock(this->lock);
+}
+
+METHOD(stream_manager_t, remove_stream, void,
+ private_stream_manager_t *this, stream_constructor_t create)
+{
+ enumerator_t *enumerator;
+ stream_entry_t *entry;
+
+ this->lock->write_lock(this->lock);
+ enumerator = this->streams->create_enumerator(this->streams);
+ while (enumerator->enumerate(enumerator, &entry))
+ {
+ if (entry->create == create)
+ {
+ this->streams->remove_at(this->streams, enumerator);
+ free(entry->prefix);
+ free(entry);
+ }
+ }
+ enumerator->destroy(enumerator);
+ this->lock->unlock(this->lock);
+}
+
+METHOD(stream_manager_t, add_service, void,
+ private_stream_manager_t *this, char *prefix,
+ stream_service_constructor_t create)
+{
+ service_entry_t *entry;
+
+ INIT(entry,
+ .prefix = strdup(prefix),
+ .create = create,
+ );
+
+ this->lock->write_lock(this->lock);
+ this->services->insert_last(this->services, entry);
+ this->lock->unlock(this->lock);
+}
+
+METHOD(stream_manager_t, remove_service, void,
+ private_stream_manager_t *this, stream_service_constructor_t create)
+{
+ enumerator_t *enumerator;
+ service_entry_t *entry;
+
+ this->lock->write_lock(this->lock);
+ enumerator = this->services->create_enumerator(this->services);
+ while (enumerator->enumerate(enumerator, &entry))
+ {
+ if (entry->create == create)
+ {
+ this->services->remove_at(this->services, enumerator);
+ free(entry->prefix);
+ free(entry);
+ }
+ }
+ enumerator->destroy(enumerator);
+ this->lock->unlock(this->lock);
+}
+
+METHOD(stream_manager_t, destroy, void,
+ private_stream_manager_t *this)
+{
+ remove_stream(this, stream_create_unix);
+ remove_stream(this, stream_create_tcp);
+ remove_service(this, stream_service_create_unix);
+ remove_service(this, stream_service_create_tcp);
+
+ this->streams->destroy(this->streams);
+ this->services->destroy(this->services);
+ this->lock->destroy(this->lock);
+ free(this);
+}
+
+/**
+ * See header
+ */
+stream_manager_t *stream_manager_create()
+{
+ private_stream_manager_t *this;
+
+ INIT(this,
+ .public = {
+ .connect = _connect_,
+ .create_service = _create_service,
+ .add_stream = _add_stream,
+ .remove_stream = _remove_stream,
+ .add_service = _add_service,
+ .remove_service = _remove_service,
+ .destroy = _destroy,
+ },
+ .streams = linked_list_create(),
+ .services = linked_list_create(),
+ .lock = rwlock_create(RWLOCK_TYPE_DEFAULT),
+ );
+
+ add_stream(this, "unix://", stream_create_unix);
+ add_stream(this, "tcp://", stream_create_tcp);
+ add_service(this, "unix://", stream_service_create_unix);
+ add_service(this, "tcp://", stream_service_create_tcp);
+
+ return &this->public;
+}