--- /dev/null
+/* packet-hci_usb.c
+ * Routines for Bluetooth HCI USB dissection
+ *
+ * Copyright 2012, Michal Labedzki for Tieto Corporation
+ *
+ * $Id$
+ *
+ * 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#include "config.h"
+
+#include <epan/packet.h>
+#include <epan/prefs.h>
+#include <epan/reassemble.h>
+
+#include "packet-usb.h"
+#include "packet-bluetooth-hci.h"
+
+static int proto_hci_usb = -1;
+static int hf_bthci_usb_data = -1;
+
+static gint ett_hci_usb = -1;
+static gint ett_hci_usb_msg_fragment = -1;
+static gint ett_hci_usb_msg_fragments = -1;
+
+static int hf_msg_fragments = -1;
+static int hf_msg_fragment = -1;
+static int hf_msg_fragment_overlap = -1;
+static int hf_msg_fragment_overlap_conflicts = -1;
+static int hf_msg_fragment_multiple_tails = -1;
+static int hf_msg_fragment_too_long_fragment = -1;
+static int hf_msg_fragment_error = -1;
+static int hf_msg_fragment_count = -1;
+static int hf_msg_reassembled_in = -1;
+static int hf_msg_reassembled_length = -1;
+
+static emem_tree_t *chandle_to_bdaddr_table = NULL;
+static emem_tree_t *bdaddr_to_name_table = NULL;
+static emem_tree_t *localhost_name = NULL;
+static emem_tree_t *localhost_bdaddr = NULL;
+static emem_tree_t *fragment_info_table = NULL;
+
+static GHashTable *fragment_table = NULL;
+static GHashTable *reassembled_table = NULL;
+
+typedef struct _fragment_info_t {
+ gint remaining_length;
+ gint fragment_id;
+} fragment_info_t;
+
+static const fragment_items hci_usb_msg_frag_items = {
+ /* Fragment subtrees */
+ &ett_hci_usb_msg_fragment,
+ &ett_hci_usb_msg_fragments,
+ /* Fragment fields */
+ &hf_msg_fragments,
+ &hf_msg_fragment,
+ &hf_msg_fragment_overlap,
+ &hf_msg_fragment_overlap_conflicts,
+ &hf_msg_fragment_multiple_tails,
+ &hf_msg_fragment_too_long_fragment,
+ &hf_msg_fragment_error,
+ &hf_msg_fragment_count,
+ /* Reassembled in field */
+ &hf_msg_reassembled_in,
+ /* Reassembled length field */
+ &hf_msg_reassembled_length,
+ /* Reassembled data field */
+ NULL,
+ /* Tag */
+ "Message fragments"
+};
+
+
+static int
+dissect_hci_usb(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *data _U_)
+{
+ proto_item *ttree = NULL;
+ proto_tree *titem = NULL;
+ proto_item *pitem = NULL;
+ gint offset = 0;
+ usb_data_t *usb_data;
+ tvbuff_t *next_tvb = NULL;
+ void *pd_save;
+ hci_data_t *hci_data;
+ gint p2p_dir_save;
+ guint32 session_id;
+ fragment_data *reassembled;
+
+ if (tvb_length_remaining(tvb, offset) <= 0)
+ return 0;
+
+ col_set_str(pinfo->cinfo, COL_PROTOCOL, "HCI_USB");
+
+ col_clear(pinfo->cinfo, COL_INFO);
+
+ usb_data = (usb_data_t *) pinfo->private_data;
+
+ p2p_dir_save = pinfo->p2p_dir;
+ pinfo->p2p_dir = usb_data->direction;
+
+ switch (pinfo->p2p_dir) {
+
+ case P2P_DIR_SENT:
+ col_add_str(pinfo->cinfo, COL_INFO, "Sent");
+ break;
+
+ case P2P_DIR_RECV:
+ col_add_str(pinfo->cinfo, COL_INFO, "Rcvd");
+ break;
+
+ default:
+ col_add_fstr(pinfo->cinfo, COL_INFO, "Unknown direction");
+ break;
+ }
+
+ titem = proto_tree_add_item(tree, proto_hci_usb, tvb, offset, -1, ENC_NA);
+ ttree = proto_item_add_subtree(titem, ett_hci_usb);
+
+ pd_save = pinfo->private_data;
+
+ session_id = usb_data->bus_id << 16 | usb_data->device_address << 8 | ((pinfo->p2p_dir == P2P_DIR_RECV) ? 1 : 0 ) << 7 | usb_data->endpoint;
+
+ hci_data = ep_alloc(sizeof(hci_data_t));
+ hci_data->interface_id = HCI_INTERFACE_USB;
+ hci_data->adapter_id = usb_data->bus_id << 8 | usb_data->device_address;
+ hci_data->chandle_to_bdaddr_table = chandle_to_bdaddr_table;
+ hci_data->bdaddr_to_name_table = bdaddr_to_name_table;
+ hci_data->localhost_bdaddr = localhost_bdaddr;
+ hci_data->localhost_name = localhost_name;
+ pinfo->private_data = hci_data;
+
+ next_tvb = tvb_new_subset_remaining(tvb, offset);
+
+ if (!pinfo->fd->flags.visited && usb_data->endpoint <= 0x02) {
+ fragment_info_t *fragment_info;
+
+ fragment_info = se_tree_lookup32(fragment_info_table, session_id);
+ if (fragment_info == NULL) {
+ fragment_info = se_alloc(sizeof(fragment_info_t));
+ fragment_info->fragment_id = 0;
+
+ se_tree_insert32(fragment_info_table, session_id, fragment_info);
+ }
+
+ if (fragment_info->fragment_id == 0) {
+ if (usb_data->endpoint == 0x00) {
+ fragment_info->remaining_length = tvb_get_guint8(tvb, offset + 2) + 3;
+ } else if (usb_data->endpoint == 0x01) {
+ fragment_info->remaining_length = tvb_get_guint8(tvb, offset + 1) + 2;
+ } else if (usb_data->endpoint == 0x02) {
+ fragment_info->remaining_length = tvb_get_letohs(tvb, offset + 2) + 4;
+ }
+ }
+
+ fragment_info->remaining_length -= tvb_ensure_length_remaining(tvb, offset);
+
+ fragment_add_seq_check(tvb, offset, pinfo, session_id, fragment_table, reassembled_table, fragment_info->fragment_id, tvb_length_remaining(tvb, offset), (fragment_info->remaining_length == 0) ? FALSE : TRUE);
+ if (fragment_info->remaining_length > 0)
+ fragment_info->fragment_id += 1;
+ else
+ fragment_info->fragment_id = 0;
+ }
+
+ reassembled = fragment_get_reassembled_id(pinfo, session_id, reassembled_table);
+
+ if (reassembled && pinfo->fd->num < reassembled->reassembled_in) {
+ pitem = proto_tree_add_text(ttree, tvb, offset, -1, "Fragment");
+ PROTO_ITEM_SET_GENERATED(pitem);
+
+ col_append_fstr(pinfo->cinfo, COL_INFO, " Fragment");
+ } else if (reassembled && pinfo->fd->num == reassembled->reassembled_in) {
+ pitem = proto_tree_add_text(ttree, tvb, offset, -1, "Complete");
+ PROTO_ITEM_SET_GENERATED(pitem);
+
+ if (reassembled->len > tvb_ensure_length_remaining(tvb, offset)) {
+ next_tvb = process_reassembled_data(tvb, 0, pinfo,
+ "Reassembled HCI_USB",
+ reassembled, &hci_usb_msg_frag_items,
+ NULL, ttree);
+ }
+
+ if (usb_data->endpoint == 0x00) {
+ call_dissector(find_dissector("bthci_cmd"), next_tvb, pinfo, tree);
+ } else if (usb_data->endpoint == 0x01) {
+ call_dissector(find_dissector("bthci_evt"), next_tvb, pinfo, tree);
+ } else if (usb_data->endpoint == 0x02) {
+ call_dissector(find_dissector("bthci_acl"), next_tvb, pinfo, tree);
+ }
+ } else {
+ pitem = proto_tree_add_text(ttree, tvb, offset, -1, "Unknown Fragment");
+ PROTO_ITEM_SET_GENERATED(pitem);
+ }
+
+ if (usb_data->endpoint == 0x03) {
+ call_dissector(find_dissector("bthci_sco"), next_tvb, pinfo, tree);
+ } else if (usb_data->endpoint > 0x03) {
+ proto_tree_add_item(ttree, hf_bthci_usb_data, tvb, offset, -1, ENC_BIG_ENDIAN);
+ }
+
+ offset += tvb_length_remaining(tvb, offset);
+
+ pinfo->p2p_dir = p2p_dir_save;
+ pinfo->private_data = pd_save;
+
+ return offset;
+}
+
+void
+proto_register_hci_usb(void)
+{
+ module_t *module;
+
+ static hf_register_info hf[] = {
+ { &hf_msg_fragments,
+ { "Message fragments", "hci_usb.msg.fragments",
+ FT_NONE, BASE_NONE, NULL, 0x00,
+ NULL, HFILL }
+ },
+ { &hf_msg_fragment,
+ { "Message fragment", "hci_usb.msg.fragment",
+ FT_FRAMENUM, BASE_NONE, NULL, 0x00,
+ NULL, HFILL }
+ },
+ { &hf_msg_fragment_overlap,
+ { "Message fragment overlap", "hci_usb.msg.fragment.overlap",
+ FT_BOOLEAN, BASE_NONE, NULL, 0x00,
+ NULL, HFILL }
+ },
+ { &hf_msg_fragment_overlap_conflicts,
+ { "Message fragment overlapping with conflicting data", "hci_usb.msg.fragment.overlap.conflicts",
+ FT_BOOLEAN, BASE_NONE, NULL, 0x00,
+ NULL, HFILL }
+ },
+ { &hf_msg_fragment_multiple_tails,
+ { "Message has multiple tail fragments", "hci_usb.msg.fragment.multiple_tails",
+ FT_BOOLEAN, BASE_NONE, NULL, 0x00,
+ NULL, HFILL }
+ },
+ { &hf_msg_fragment_too_long_fragment,
+ { "Message fragment too long", "hci_usb.msg.fragment.too_long_fragment",
+ FT_BOOLEAN, BASE_NONE, NULL, 0x00,
+ NULL, HFILL }
+ },
+ { &hf_msg_fragment_error,
+ { "Message defragmentation error", "hci_usb.msg.fragment.error",
+ FT_FRAMENUM, BASE_NONE, NULL, 0x00,
+ NULL, HFILL }
+ },
+ { &hf_msg_fragment_count,
+ { "Message fragment count", "hci_usb.msg.fragment.count",
+ FT_UINT32, BASE_DEC, NULL, 0x00,
+ NULL, HFILL }
+ },
+ { &hf_msg_reassembled_in,
+ { "Reassembled in", "hci_usb.msg.reassembled.in",
+ FT_FRAMENUM, BASE_NONE, NULL, 0x00,
+ NULL, HFILL }
+ },
+ { &hf_msg_reassembled_length,
+ { "Reassembled MP2T length", "hci_usb.msg.reassembled.length",
+ FT_UINT32, BASE_DEC, NULL, 0x00,
+ NULL, HFILL }
+ },
+ { &hf_bthci_usb_data,
+ { "Unknown Data", "hci_usb.data",
+ FT_NONE, BASE_NONE, NULL, 0x00,
+ NULL, HFILL }
+ }
+ };
+
+ static gint *ett[] = {
+ &ett_hci_usb,
+ &ett_hci_usb_msg_fragment,
+ &ett_hci_usb_msg_fragments,
+ };
+
+ fragment_table_init(&fragment_table);
+ reassembled_table_init(&reassembled_table);
+ fragment_info_table = se_tree_create(EMEM_TREE_TYPE_RED_BLACK, "hci_usb fragment_info");
+
+ chandle_to_bdaddr_table = se_tree_create(EMEM_TREE_TYPE_RED_BLACK, "hci_usb adapter/chandle to bdaddr");
+ bdaddr_to_name_table = se_tree_create(EMEM_TREE_TYPE_RED_BLACK, "hci_usb bdaddr to name");
+ localhost_bdaddr = se_tree_create(EMEM_TREE_TYPE_RED_BLACK, "hci_usb adaper/frame to bdaddr");
+ localhost_name = se_tree_create(EMEM_TREE_TYPE_RED_BLACK, "hci_usb adaper/frame to name");
+
+ proto_hci_usb = proto_register_protocol("Bluetooth HCI USB Transport", "HCI_USB", "hci_usb");
+ proto_register_field_array(proto_hci_usb, hf, array_length(hf));
+ proto_register_subtree_array(ett, array_length(ett));
+ new_register_dissector("hci_usb", dissect_hci_usb, proto_hci_usb);
+
+ module = prefs_register_protocol(proto_hci_usb, NULL);
+ prefs_register_static_text_preference(module, "bthci_usb.version",
+ "Bluetooth HCI USB Transport from Core 4.0",
+ "Version of protocol supported by this dissector.");
+}
+
+void
+proto_reg_handoff_hci_usb(void)
+{
+ dissector_handle_t hci_usb_handle;
+
+ hci_usb_handle = find_dissector("hci_usb");
+
+ dissector_add_uint("usb.product", (0x0a5c << 16) | 0x21e8, hci_usb_handle);
+ dissector_add_uint("usb.product", (0x1131 << 16) | 0x1001, hci_usb_handle);
+ dissector_add_uint("usb.product", (0x050d << 16) | 0x0081, hci_usb_handle);
+ dissector_add_uint("usb.product", (0x0a5c << 16) | 0x2198, hci_usb_handle);
+ dissector_add_uint("usb.product", (0x0a5c << 16) | 0x21e8, hci_usb_handle);
+ dissector_add_uint("usb.product", (0x04bf << 16) | 0x0320, hci_usb_handle);
+ dissector_add_uint("usb.product", (0x13d3 << 16) | 0x3375, hci_usb_handle);
+
+ dissector_add_uint("usb.protocol", 0xE00101, hci_usb_handle);
+
+ dissector_add_handle("usb.device", hci_usb_handle);
+}
git.samba.org / metze / wireshark / wip.git / commitdiff