Refactor CTAP2 file structure.

Signed-off-by: Pol Henarejos <pol.henarejos@cttc.es>

src/fido/cbor.c

@@ -0,0 +1,39 @@
+/*
+ * This file is part of the Pico FIDO distribution (https://github.com/polhenarejos/pico-fido).
+ * Copyright (c) 2022 Pol Henarejos.
+ *
+ * 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, version 3.
+ *
+ * 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, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <stdlib.h>
+#include "pico/stdlib.h"
+#include "ctap2_cbor.h"
+#include "ctap.h"
+#include "ctap_hid.h"
+
+bool _btrue = true, *ptrue = &_btrue, _bfalse = false, *pfalse = &_bfalse;
+
+const uint8_t aaguid[16] = {0x89, 0xFB, 0x94, 0xB7, 0x06, 0xC9, 0x36, 0x73, 0x9B, 0x7E, 0x30, 0x52, 0x6D, 0x96, 0x81, 0x45}; // First 16 bytes of SHA256("Pico FIDO2")
+
+int cbor_process(const uint8_t *data, size_t len) {
+    if (len == 0)
+        return -CTAP1_ERR_INVALID_LEN;
+    driver_prepare_response();
+    if (data[0] == CTAP_MAKE_CREDENTIAL)
+        return cbor_make_credential(data + 1, len - 1);
+    if (data[0] == CTAP_GET_INFO)
+        return cbor_get_info();
+    else if (data[0] == CTAP_RESET)
+        return cbor_reset();
+    return -CTAP2_ERR_INVALID_CBOR;
+}