Initial import from SVN

1 files changed, 147 insertions, 0 deletions

diff --git a/src/lib/protocols/btlib.h b/src/lib/protocols/btlib.h
new file mode 100644
index 000000000..cc2928155
--- /dev/null
+++ b/src/lib/protocols/btlib.h
@@ -0,0 +1,147 @@
+/*
+ * btlib.h
+ *
+ * Copyright (C) 2011-15 - ntop.org
+ *               Contributed by Vitaly Lavrov <vel21ripn@gmail.com>
+ *
+ * This file is part of nDPI, an open source deep packet inspection
+ * library based on the OpenDPI and PACE technology by ipoque GmbH
+ *
+ * nDPI 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.
+ *
+ * nDPI 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 nDPI.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#define BDEC_MAXDEPT 8
+
+
+typedef struct b_elem_s {
+	const u_int8_t *s;
+	size_t   l;
+} b_elem_s_t;
+
+struct __attribute__ ((__packed__)) bt_nodes_data {
+	u_int8_t  id[20] ;
+	u_int32_t ip;
+	u_int16_t port;
+};
+
+struct __attribute__ ((__packed__)) bt_ipv4p {
+	u_int32_t ip;
+	u_int16_t port;
+};
+
+struct __attribute__ ((__packed__)) bt_ipv4p2 {
+	struct bt_ipv4p d;
+	u_int8_t	pad[2];
+};
+
+struct __attribute__ ((__packed__)) bt_nodes6_data {
+	u_int8_t  id[20] ;
+	u_int32_t ip[4];
+	u_int16_t port;
+};
+
+struct __attribute__ ((__packed__)) bt_ipv6p {
+	u_int32_t ip[4];
+	u_int16_t port;
+};
+
+struct __attribute__ ((__packed__)) bt_ipv6p2 {
+	struct bt_ipv6p d;
+	u_int8_t	pad[3];
+};
+
+/*
+ 
+  a.id S		r.id S
+  a.info_hash S		r.ip ipv4
+  a.name S		r.nodes x(id,ipv4,port)
+ -a.noseed 0|1		r.n S        name of file
+  a.port N		r.p          port
+ -a.scrape 0|1		r.token S
+ -a.seed 0|1		r.values x(ipv4,port)
+  a.target S
+  a.token S		-a.vote N
+ -a.want n4|n6
+ 
+  q announce_peer	q find_node
+  q get_peers		q ping
+ -q vote
+ 
+  ip ipv4+port		interval N
+  min interval N	peers x(ipv4,port)
+  t 2/4/8b		v 4/6b
+ 
+  e S			y e	y r	y q
+ 
+  */
+
+struct bt_parse_protocol {
+	u_int16_t y_e:1, y_r:1, y_q:1,
+		  q_a_peer:1,q_f_node:1,
+		  q_g_peers:1,q_ping:1,
+		  h_int:1,h_mint:1,h_ip:1;
+	struct {
+		const u_int8_t	*id,		// 20
+			 	*info_hash,	// 20
+			 	*target,	// 20
+				*token,		// 20|8
+			 	*name;		// varlen
+		u_int16_t name_len;
+		u_int16_t port;
+		u_int16_t	t_len;
+	} a;
+	struct {
+		const u_int8_t 	*id,		// 20
+			 	*token,		// 20|8
+				*values,	// (6+2)*x
+				*values6,	// (18_3)*x
+			 	*name;		// varlen
+		struct bt_ipv4p	*ip;
+		struct bt_nodes_data *nodes;
+		struct bt_nodes6_data *nodes6;
+		u_int16_t	name_len;
+		u_int16_t	nn;		// nodes num
+		u_int16_t	nv;		// valuse num
+		u_int16_t	nn6;		// nodes6 num
+		u_int16_t	nv6;		// valuse6 num
+		u_int16_t	port;
+		u_int16_t	t_len;
+	} r;
+	int			interval,min_interval;
+	struct bt_ipv4p		*peers;
+	int			n_peers;
+	struct bt_ipv4p		*ip;
+	const u_int8_t		*e_msg;
+	u_int16_t		e_len;
+	u_int64_t		t,v;
+};
+
+typedef struct bt_parse_data_cb {
+	struct bt_parse_protocol p;
+	char	buf[64];
+	int	level;
+	int	t;
+	union {
+		i_int64_t i;
+		b_elem_s_t s;
+	} v;
+} bt_parse_data_cb_t;
+
+#ifndef __KERNEL__
+extern int bt_parse_debug;
+void dump_bt_proto_struct(struct bt_parse_protocol *p);
+#endif
+const u_int8_t *bt_decode(const u_int8_t *b, size_t *l, int *ret, bt_parse_data_cb_t *cbd);
+