✨ feat(integration decoders): http and glimpse_detector

compile pass, todo test

decoders/glimpse_detector/libprotoident/tcp/lpi_ipfs.cc

@@ -0,0 +1,94 @@
+/*
+ *
+ * Copyright (c) 2011-2016 The University of Waikato, Hamilton, New Zealand.
+ * All rights reserved.
+ *
+ * This file is part of libprotoident.
+ *
+ * This code has been developed by the University of Waikato WAND
+ * research group. For further information please see http://www.wand.net.nz/
+ *
+ * libprotoident is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * libprotoident 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 Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ *
+ */
+
+#include <string.h>
+
+#include "libprotoident.h"
+#include "proto_manager.h"
+#include "proto_common.h"
+
+/* self-described "P2P hypermedia protocol" -- https://ipfs.io */
+
+static inline bool match_ipfs_mu(uint32_t payload, uint32_t len) {
+        if (len == 20 && MATCH(payload, 0x13, 0x2f, 'm', 'u')) {
+                return true;
+        }
+        if (len == 34 && MATCH(payload, 0x13, 0x2f, 'm', 'u')) {
+                return true;
+        }
+        return false;
+}
+
+static inline bool match_ipfs_single(uint32_t payload, uint32_t len) {
+        if (len == 1 && MATCH(payload, 0x13, 0x00, 0x00, 0x00))
+                return true;
+        return false;
+}
+
+static inline bool match_ipfs_length(uint32_t payload, uint32_t len) {
+        uint32_t plen = ntohl(payload);
+
+        /* Starting to see IPFS replies with a four byte length field */
+        if (plen + 4 == len) {
+                return true;
+        }
+        return false;
+}
+
+static inline bool match_ipfs(lpi_data_t *data, lpi_module_t *mod UNUSED) {
+
+        /* Port 4001 by default, but probably changeable */
+        if (match_ipfs_mu(data->payload[0], data->payload_len[0])) {
+                if (match_ipfs_single(data->payload[1], data->payload_len[1]))
+                        return true;
+                if (match_ipfs_mu(data->payload[1], data->payload_len[1]))
+                        return true;
+                if (match_ipfs_length(data->payload[1], data->payload_len[1]))
+                        return true;
+        }
+
+        if (match_ipfs_mu(data->payload[1], data->payload_len[1])) {
+                if (match_ipfs_single(data->payload[0], data->payload_len[0]))
+                        return true;
+                if (match_ipfs_length(data->payload[0], data->payload_len[0]))
+                        return true;
+        }
+
+	return false;
+}
+
+static lpi_module_t lpi_ipfs = {
+	LPI_PROTO_IPFS,
+	LPI_CATEGORY_P2P,
+	"IPFS",
+	10,
+	match_ipfs
+};
+
+void register_ipfs(LPIModuleMap *mod_map) {
+	register_protocol(&lpi_ipfs, mod_map);
+}
+