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-rw-r--r--src/charon/plugins/med_db/med_db_creds.c211
1 files changed, 211 insertions, 0 deletions
diff --git a/src/charon/plugins/med_db/med_db_creds.c b/src/charon/plugins/med_db/med_db_creds.c
new file mode 100644
index 000000000..f8aed2597
--- /dev/null
+++ b/src/charon/plugins/med_db/med_db_creds.c
@@ -0,0 +1,211 @@
+/*
+ * Copyright (C) 2008 Martin Willi
+ * Hochschule fuer Technik Rapperswil
+ *
+ * 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.
+ *
+ * $Id$
+ */
+
+#include "med_db_creds.h"
+
+#include <daemon.h>
+#include <library.h>
+#include <utils/enumerator.h>
+
+typedef struct private_med_db_creds_t private_med_db_creds_t;
+
+/**
+ * Private data of an med_db_creds_t object
+ */
+struct private_med_db_creds_t {
+
+ /**
+ * Public part
+ */
+ med_db_creds_t public;
+
+ /**
+ * underlying database handle
+ */
+ database_t *db;
+};
+
+/**
+ * data passed between enumerate calls
+ */
+typedef struct {
+ /** current shared key */
+ shared_key_t *current;
+} data_t;
+
+typedef struct private_shared_key_t private_shared_key_t;
+/**
+ * shared key implementation
+ */
+struct private_shared_key_t {
+ /** implements shared_key_t*/
+ shared_key_t public;
+ /** data of the key */
+ chunk_t key;
+ /** reference counter */
+ refcount_t ref;
+};
+
+/**
+ * Destroy allocated data_t struct
+ */
+static void data_destroy(data_t *this)
+{
+ DESTROY_IF(this->current);
+ free(this);
+}
+
+/**
+ * Implementation of shared_key_t.get_type.
+ */
+static shared_key_type_t get_type(private_shared_key_t *this)
+{
+ return SHARED_IKE;
+}
+
+/**
+ * Implementation of shared_key_t.get_ref.
+ */
+static private_shared_key_t* get_ref(private_shared_key_t *this)
+{
+ ref_get(&this->ref);
+ return this;
+}
+
+/**
+ * Implementation of shared_key_t.destroy
+ */
+static void shared_key_destroy(private_shared_key_t *this)
+{
+ if (ref_put(&this->ref))
+ {
+ chunk_free(&this->key);
+ free(this);
+ }
+}
+
+/**
+ * Implementation of shared_key_t.get_key.
+ */
+static chunk_t get_key(private_shared_key_t *this)
+{
+ return this->key;
+}
+
+/**
+ * create a shared key
+ */
+static shared_key_t *shared_key_create(chunk_t key)
+{
+ private_shared_key_t *this = malloc_thing(private_shared_key_t);
+
+ this->public.get_type = (shared_key_type_t(*)(shared_key_t*))get_type;
+ this->public.get_key = (chunk_t(*)(shared_key_t*))get_key;
+ this->public.get_ref = (shared_key_t*(*)(shared_key_t*))get_ref;
+ this->public.destroy = (void(*)(shared_key_t*))shared_key_destroy;
+
+ this->key = chunk_clone(key);
+ this->ref = 1;
+ return &this->public;
+}
+
+/**
+ * filter for enumerator, returns for each SQL result a shared key and match
+ */
+static bool filter(data_t *this, chunk_t *chunk, shared_key_t **out,
+ void **unused1, id_match_t *match_me,
+ void **unused2, id_match_t *match_other)
+{
+ DESTROY_IF(this->current);
+ this->current = shared_key_create(*chunk);
+ *out = this->current;
+ /* we have unique matches only, but do not compare own ID */
+ if (match_me)
+ {
+ *match_me = ID_MATCH_ANY;
+ }
+ if (match_other)
+ {
+ *match_other = ID_MATCH_PERFECT;
+ }
+ return TRUE;
+}
+
+
+/**
+ * Implements credential_set_t.create_shared_enumerator
+ */
+static enumerator_t* create_shared_enumerator(private_med_db_creds_t *this,
+ shared_key_type_t type, identification_t *me,
+ identification_t *other)
+{
+ enumerator_t *enumerator;
+ data_t *data;
+
+ if (type != SHARED_IKE)
+ {
+ return NULL;
+ }
+ enumerator = this->db->query(this->db,
+ "SELECT Psk FROM Peer WHERE PeerId = ?",
+ DB_BLOB, other->get_encoding(other),
+ DB_BLOB);
+ if (enumerator)
+ {
+ data = malloc_thing(data_t);
+ data->current = NULL;
+ return enumerator_create_filter(enumerator, (void*)filter,
+ data, (void*)data_destroy);
+ }
+ return NULL;
+}
+
+/**
+ * returns null
+ */
+static void *return_null()
+{
+ return NULL;
+}
+
+/**
+ * Implementation of backend_t.destroy.
+ */
+static void destroy(private_med_db_creds_t *this)
+{
+ free(this);
+}
+
+/**
+ * Described in header.
+ */
+med_db_creds_t *med_db_creds_create(database_t *db)
+{
+ private_med_db_creds_t *this = malloc_thing(private_med_db_creds_t);
+
+ this->public.set.create_private_enumerator = (void*)return_null;
+ this->public.set.create_cert_enumerator = (void*)return_null;
+ this->public.set.create_shared_enumerator = (void*)create_shared_enumerator;
+ this->public.set.create_cdp_enumerator = (void*)return_null;
+
+ this->public.destroy = (void (*)(med_db_creds_t*))destroy;
+
+ this->db = db;
+
+ return &this->public;
+}
+