path: root/wireshark/wireshark-wtap-gsm.patch

Index: wsutil/encap_util.c
===================================================================
--- wsutil/encap_util.c	(revision 26844)
+++ wsutil/encap_util.c	(working copy)
@@ -331,6 +331,8 @@
 	{ 214, 		WTAP_ENCAP_X2E_XORAYA },
 	/* IEEE 802.15.4 Wireless PAN non-ASK PHY */
 	{ 215,		WTAP_ENCAP_IEEE802_15_4_NONASK_PHY },
+	{ 2342,		WTAP_ENCAP_GSMTAP_UM },
+	{ 2343,		WTAP_ENCAP_GSMTAP_ABIS },
 
 	/*
 	 * To repeat:
Index: epan/dissectors/packet-gsmtap.c
===================================================================
--- epan/dissectors/packet-gsmtap.c	(revision 0)
+++ epan/dissectors/packet-gsmtap.c	(revision 0)
@@ -0,0 +1,256 @@
+/* packet-gsmtap.c
+ * Routines for GSMTAP captures
+ *
+ * (C) 2008 by Harald Welte <laforge@gnumonks.org>
+ *
+ * Wireshark - Network traffic analyzer
+ * By Gerald Combs <gerald@wireshark.org>
+ * Copyright 1998 Gerald Combs
+ *
+ * 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., 59 Temple Place - Suite 330, Boston, MA
+ * 02111-1307, USA.
+ *
+ */
+
+#ifdef HAVE_CONFIG_H
+# include "config.h"
+#endif
+
+#include <glib.h>
+#include <epan/packet.h>
+#include <epan/prefs.h>
+
+#include "packet-gsmtap.h"
+
+static int proto_gsmtap = -1;
+
+static int hf_gsmtap_version = -1;
+static int hf_gsmtap_hdrlen = -1;
+static int hf_gsmtap_type = -1;
+static int hf_gsmtap_timeslot = -1;
+static int hf_gsmtap_arfcn = -1;
+static int hf_gsmtap_noise_db = -1;
+static int hf_gsmtap_signal_db = -1;
+static int hf_gsmtap_frame_nr = -1;
+static int hf_gsmtap_burst_type = -1;
+static int hf_gsmtap_antenna = -1;
+
+static gint ett_gsmtap = -1;
+
+enum {
+	SUB_DATA = 0,
+	SUB_UM,
+	SUB_ABIS,
+
+	SUB_MAX
+};
+
+typedef gboolean (*sub_checkfunc_t)(packet_info *);
+
+static dissector_handle_t sub_handles[SUB_MAX];
+
+static const char *gsmtap_bursts[] = {
+	[GSMTAP_BURST_UNKNOWN]		= "UNKNOWN",
+	[GSMTAP_BURST_FCCH]		= "FCCH",
+	[GSMTAP_BURST_PARTIAL_SCH]	= "PARTIAL_SCH",
+	[GSMTAP_BURST_SCH]		= "SCH",
+	[GSMTAP_BURST_CTS_SCH]		= "CTS_SCH",
+	[GSMTAP_BURST_COMPACT_SCH]	= "COMPACT_SCH",
+	[GSMTAP_BURST_NORMAL]		= "NORMAL",
+	[GSMTAP_BURST_DUMMY]		= "DUMMY",
+	[GSMTAP_BURST_ACCESS]		= "ACCESS",
+};
+
+static const char *gsmtap_get_burst(unsigned int burst_type)
+{
+	const char *desc = "UNSUPPORTED";
+
+	if (burst_type >= sizeof(gsmtap_bursts)/sizeof(const char *))
+		return desc;
+	if (gsmtap_bursts[burst_type] == NULL)
+		return desc;
+
+	return gsmtap_bursts[burst_type];
+}
+
+static const char *gsmtap_get_type(int type)
+{
+	const char *desc;
+
+	switch (type) {
+		case GSMTAP_TYPE_UM:
+			desc = "GSM Um (MS<->BTS)";
+			break;
+		case GSMTAP_TYPE_ABIS:
+			desc = "GSM Abis (BTS<->BSC)";
+			break;
+		case GSMTAP_TYPE_UM_BURST:
+			desc = "GSM Um burst (BTS<->BSC)";
+			break;
+		default:
+			desc = "<unknown type>";
+			break;
+	}
+
+	return desc;
+}
+
+static void
+dissect_gsmtap(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
+{
+	int sub_handle, len, offset = 0;
+	proto_item *ti;
+	proto_tree *gsmtap_tree = NULL;
+	tvbuff_t *payload_tvb;
+
+	u_int8_t version, hdr_len, type, ts, noise_db, signal_db;
+	u_int8_t burst_type, antenna;
+	u_int16_t arfcn;
+	u_int32_t frame_nr;
+
+	len = tvb_length(tvb);
+
+	//pinfo->ptype = PT_I2C;
+
+	version = tvb_get_guint8(tvb, offset + 0);
+	hdr_len = tvb_get_guint8(tvb, offset + 1) <<2;
+	type = tvb_get_guint8(tvb, offset + 2);
+	ts = tvb_get_guint8(tvb, offset + 3);
+
+	arfcn = tvb_get_ntohs(tvb, offset + 4);
+	noise_db = tvb_get_guint8(tvb, offset + 6);
+	signal_db = tvb_get_guint8(tvb, offset + 7);
+
+	frame_nr = tvb_get_ntohl(tvb, offset + 8);
+
+	burst_type = tvb_get_guint8(tvb, offset + 12);
+	antenna = tvb_get_guint8(tvb, offset + 13);
+
+	payload_tvb = tvb_new_subset(tvb, hdr_len, len-hdr_len, len-hdr_len);
+
+#if 0
+	if (check_col(pinfo->cinfo, COL_PROTOCOL)) {
+		if (is_event)
+			col_add_fstr(pinfo->cinfo, COL_PROTOCOL, "I2C Event");
+		else
+			col_add_fstr(pinfo->cinfo, COL_PROTOCOL, "I2C %s",
+					(flags & I2C_FLAG_RD) ? "Read" : "Write");
+	}
+
+	if (check_col(pinfo->cinfo, COL_DEF_SRC)) {
+		col_add_fstr(pinfo->cinfo, COL_DEF_SRC, "I2C-%d", bus);
+	}
+
+	if (check_col(pinfo->cinfo, COL_DEF_DST)) {
+		if (is_event)
+			col_add_fstr(pinfo->cinfo, COL_DEF_DST, "----");
+		else
+			col_add_fstr(pinfo->cinfo, COL_DEF_DST, "0x%02x", addr);
+	}
+
+#endif
+	if (check_col(pinfo->cinfo, COL_INFO)) {
+		col_add_fstr(pinfo->cinfo, COL_INFO, "GSM TAP, %d bytes", len);
+	}
+
+	if (tree) {
+		ti = proto_tree_add_protocol_format(tree, proto_gsmtap, tvb,
+						    0, hdr_len,
+						    "GSM TAP Header");
+		gsmtap_tree = proto_item_add_subtree(ti, ett_gsmtap);
+		proto_tree_add_item(gsmtap_tree, hf_gsmtap_version,
+				    tvb, offset, 1, FALSE);
+		proto_tree_add_uint_format(gsmtap_tree, hf_gsmtap_hdrlen,
+				    tvb, offset+1, 1, hdr_len, 
+				    "Header length: %u bytes", hdr_len);
+		proto_tree_add_uint_format(gsmtap_tree, hf_gsmtap_type,
+					   tvb, offset+2, 1, type, 
+					   "Type: %s (0x%02x)", 
+					   gsmtap_get_type(type), type);
+		proto_tree_add_uint_format(gsmtap_tree, hf_gsmtap_burst_type,
+					   tvb, offset+12, 1, burst_type,
+					   "Burst: %s",
+					   gsmtap_get_burst(burst_type));
+		proto_tree_add_uint_format(gsmtap_tree, hf_gsmtap_arfcn,
+					   tvb, offset+4, 2, arfcn,
+					   "ARFCN: %u", arfcn);
+		proto_tree_add_item(gsmtap_tree, hf_gsmtap_timeslot,
+				    tvb, offset+3, 1, FALSE);
+		proto_tree_add_item(gsmtap_tree, hf_gsmtap_antenna,
+				    tvb, offset+13, 1, FALSE);
+		proto_tree_add_uint_format(gsmtap_tree, hf_gsmtap_noise_db,
+					   tvb, offset+6, 1, noise_db,
+					   "Noise level: %u dB", noise_db);
+		proto_tree_add_uint_format(gsmtap_tree, hf_gsmtap_signal_db,
+					   tvb, offset+7, 1, signal_db,
+					   "Signal level: %u dB", signal_db);
+		proto_tree_add_uint_format(gsmtap_tree, hf_gsmtap_frame_nr,
+					   tvb, offset+8, 4, frame_nr,
+					   "Frame Number: %u", frame_nr);
+	}
+	switch (type) {
+	case GSMTAP_TYPE_UM:
+		switch (burst_type) {
+		case GSMTAP_BURST_NORMAL:
+			sub_handle = SUB_UM;
+			break;
+		default:
+			sub_handle = SUB_DATA;
+			break;
+		}
+		break;
+	case GSMTAP_TYPE_UM_BURST:
+	default:
+		sub_handle = SUB_DATA;
+		break;
+	}
+	call_dissector(sub_handles[sub_handle], payload_tvb, pinfo, tree);
+}
+
+void
+proto_register_gsmtap(void)
+{
+	static hf_register_info hf[] = {
+		{ &hf_gsmtap_version, { "Version", "gsmtap.version", FT_UINT8, BASE_DEC, NULL, 0, "", HFILL }},
+		{ &hf_gsmtap_hdrlen, { "Header Length", "gsmtap.hdr_len", FT_UINT8, BASE_DEC, NULL, 0, "", HFILL }},
+		{ &hf_gsmtap_type, { "Type", "gsmtap.type", FT_UINT8, BASE_DEC, NULL, 0, "", HFILL }},
+		{ &hf_gsmtap_timeslot, { "Time Slot", "gsmtap.ts", FT_UINT8, BASE_DEC, NULL, 0, "", HFILL }},
+		{ &hf_gsmtap_arfcn, { "ARFCN", "gsmtap.arfcn", FT_UINT16, BASE_DEC, NULL, 0, "", HFILL }},
+		{ &hf_gsmtap_noise_db, { "Noise dB", "gsmtap.noise_db", FT_UINT8, BASE_DEC, NULL, 0, "", HFILL }},
+		{ &hf_gsmtap_signal_db, { "Signal dB", "gsmtap.signal_db", FT_UINT8, BASE_DEC, NULL, 0, "", HFILL }},
+		{ &hf_gsmtap_frame_nr, { "Frame Number", "gsmtap.frame_nr", FT_UINT32, BASE_DEC, NULL, 0, "", HFILL }},
+		{ &hf_gsmtap_burst_type, { "Burst Type", "gsmtap.burst_type", FT_UINT8, BASE_DEC, NULL, 0, "", HFILL }},
+		{ &hf_gsmtap_antenna, { "Antenna Number", "gsmtap.antenna", FT_UINT8, BASE_DEC, NULL, 0, "", HFILL }},
+	};
+	static gint *ett[] = {
+		&ett_gsmtap
+	};
+
+	proto_gsmtap = proto_register_protocol("GSM Radiotap", "GSMTAP", "gsmtap");
+	proto_register_field_array(proto_gsmtap, hf, array_length(hf));
+	proto_register_subtree_array(ett, array_length(ett));
+}
+
+void
+proto_reg_handoff_gsmtap(void)
+{
+	dissector_handle_t gsmtap_handle;
+
+	sub_handles[SUB_DATA] = find_dissector("data");
+	sub_handles[SUB_UM] = find_dissector("gsm_a_ccch");
+	sub_handles[SUB_ABIS] = find_dissector("gsm_a_dtap");
+	gsmtap_handle = create_dissector_handle(dissect_gsmtap, proto_gsmtap);
+	dissector_add("wtap_encap", WTAP_ENCAP_GSMTAP_UM, gsmtap_handle);
+}
Index: epan/dissectors/packet-gsmtap.h
===================================================================
--- epan/dissectors/packet-gsmtap.h	(revision 0)
+++ epan/dissectors/packet-gsmtap.h	(revision 0)
@@ -0,0 +1,41 @@
+#ifndef _GSMTAP_H
+#define _GSMTAP_H
+
+/* gsmtap header, pseudo-header in front of the actua GSM payload*/
+
+#include <sys/types.h>
+
+#define GSMTAP_VERSION		0x01
+
+#define GSMTAP_TYPE_UM		0x01
+#define GSMTAP_TYPE_ABIS	0x02
+#define GSMTAP_TYPE_UM_BURST	0x03	/* raw burst bits */
+
+#define GSMTAP_BURST_UNKNOWN		0x00
+#define GSMTAP_BURST_FCCH		0x01
+#define GSMTAP_BURST_PARTIAL_SCH	0x02
+#define GSMTAP_BURST_SCH		0x03
+#define GSMTAP_BURST_CTS_SCH		0x04
+#define GSMTAP_BURST_COMPACT_SCH	0x05
+#define GSMTAP_BURST_NORMAL		0x06
+#define GSMTAP_BURST_DUMMY		0x07
+#define GSMTAP_BURST_ACCESS		0x08
+
+struct gsmtap_hdr {
+	u_int8_t version;		/* version, set to 0x01 currently */
+	u_int8_t hdr_len;		/* length in number of 32bit words */
+	u_int8_t type;			/* see GSMTAP_TYPE_* */
+	u_int8_t timeslot;		/* timeslot (0..7 on Um) */
+
+	u_int16_t arfcn;		/* ARFCN (frequency) */
+	u_int8_t noise_db;		/* noise figure in dB */
+	u_int8_t signal_db;		/* signal level in dB */
+
+	u_int32_t frame_number;		/* GSM Frame Number (FN) */
+
+	u_int8_t burst_type;		/* Type of burst, see above */
+	u_int8_t antenna_nr;		/* Antenna Number */
+	u_int16_t res;			/* reserved for future use (RFU) */
+
+} __attribute__((packed));
+#endif /* _GSMTAP_H */
Index: epan/dissectors/Makefile.common
===================================================================
--- epan/dissectors/Makefile.common	(revision 26844)
+++ epan/dissectors/Makefile.common	(working copy)
@@ -453,6 +453,7 @@
 	packet-gsm_bssmap_le.c	\
 	packet-gsm_sms.c	\
 	packet-gsm_sms_ud.c	\
+	packet-gsmtap.c		\
 	packet-gssapi.c		\
 	packet-gtp.c		\
 	packet-gvrp.c		\
@@ -974,6 +975,7 @@
 	packet-gsm_a_common.h	\
 	packet-gsm_map.h	\
 	packet-gsm_sms.h	\
+	packet-gsmtap.h		\
 	packet-gssapi.h	\
 	packet-gtp.h	\
 	packet-h223.h	\
Index: wiretap/wtap.c
===================================================================
--- wiretap/wtap.c	(revision 26844)
+++ wiretap/wtap.c	(working copy)
@@ -430,7 +430,13 @@
 	{ "I2C", "i2c" },
 
 	/* WTAP_ENCAP_IEEE802_15_4_NONASK_PHY */
-	{ "IEEE 802.15.4 Wireless PAN non-ASK PHY", "wpan-nonask-phy" }
+	{ "IEEE 802.15.4 Wireless PAN non-ASK PHY", "wpan-nonask-phy" },
+
+	/* WTAP_GSMTAP_UM */
+	{ "GSMTAP Um Interface (MS<->BTS)", "gsmtap-um" },
+
+	/* WTAP_GSMTAP_ABIS */
+	{ "GSMTAP Abis Interface (BTS<->BSC)", "gsmtap-abis" }
 };
 
 gint wtap_num_encap_types = sizeof(encap_table_base) / sizeof(struct encap_type_info);
Index: wiretap/wtap.h
===================================================================
--- wiretap/wtap.h	(revision 26844)
+++ wiretap/wtap.h	(working copy)
@@ -204,6 +204,8 @@
 #define WTAP_ENCAP_X2E_SERIAL                   111
 #define WTAP_ENCAP_I2C                          112
 #define WTAP_ENCAP_IEEE802_15_4_NONASK_PHY      113
+#define WTAP_ENCAP_GSMTAP_UM			114
+#define WTAP_ENCAP_GSMTAP_ABIS			115
 
 #define WTAP_NUM_ENCAP_TYPES                    wtap_get_num_encap_types()