ipcpd: normal: Add policy for obtaining a flat address

This adds a policy for obtaining a flat address, and thus also the
infrastructure for policies in the IPCP. The IPCP should check if the
address is available; this is currently not there yet.

1 files changed, 78 insertions, 0 deletions

diff --git a/src/ipcpd/normal/addr_auth.c b/src/ipcpd/normal/addr_auth.c
new file mode 100644
index 00000000..71bcfafa
--- /dev/null
+++ b/src/ipcpd/normal/addr_auth.c
@@ -0,0 +1,78 @@
+/*
+ * Ouroboros - Copyright (C) 2016
+ *
+ * Address authority
+ *
+ *    Sander Vrijders <[email protected]>
+ *
+ * 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.
+ *
+ * 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#define OUROBOROS_PREFIX "addr_auth"
+
+#include <ouroboros/config.h>
+#include <ouroboros/logs.h>
+
+#include "addr_auth.h"
+#include "flat.h"
+
+#include <stdlib.h>
+#include <assert.h>
+
+struct addr_auth * addr_auth_create(enum pol_addr_auth type)
+{
+        struct addr_auth * tmp;
+
+        tmp = malloc(sizeof(*tmp));
+        if (tmp == NULL)
+                return NULL;
+
+        switch (type) {
+        case FLAT_RANDOM:
+                if (flat_init()) {
+                        free(tmp);
+                        return NULL;
+                }
+
+                tmp->address = flat_address;
+                tmp->type = type;
+                break;
+        default:
+                LOG_ERR("Unknown address authority type.");
+                free(tmp);
+                return NULL;
+        }
+
+        return tmp;
+}
+
+int addr_auth_destroy(struct addr_auth * instance)
+{
+        assert(instance);
+
+        switch (instance->type) {
+        case FLAT_RANDOM:
+                if (flat_fini()) {
+                        return -1;
+                }
+                break;
+        default:
+                LOG_ERR("Unknown address authority type.");
+        }
+
+        free(instance);
+
+        return 0;
+}