diff options
Diffstat (limited to 'epan/dissectors/packet-hci_h4.c')
| -rw-r--r-- | epan/dissectors/packet-hci_h4.c | 154 |
1 files changed, 154 insertions, 0 deletions
diff --git a/epan/dissectors/packet-hci_h4.c b/epan/dissectors/packet-hci_h4.c new file mode 100644 index 00000000..c35e08b3 --- /dev/null +++ b/epan/dissectors/packet-hci_h4.c @@ -0,0 +1,154 @@ +/* packet-hci_h4.c + * Routines for the Bluetooth HCI H4 dissection + * + * Copyright 2002, Christoph Scholz <scholz@cs.uni-bonn.de> + * From: http://affix.sourceforge.net/archive/ethereal_affix-3.patch + * + * Refactored for wireshark checkin + * Ronnie Sahlberg 2006 + * + * Wireshark - Network traffic analyzer + * By Gerald Combs <gerald@wireshark.org> + * Copyright 1998 Gerald Combs + * + * SPDX-License-Identifier: GPL-2.0-or-later + */ + +#include "config.h" + +#include <epan/packet.h> +#include <wiretap/wtap.h> +#include "packet-bluetooth.h" + +static int proto_hci_h4 = -1; +static int hf_hci_h4_type = -1; +static int hf_hci_h4_direction = -1; + +static gint ett_hci_h4 = -1; + +static dissector_handle_t hci_h4_handle; + +static dissector_table_t hci_h4_table; + +static const value_string hci_h4_type_vals[] = { + {HCI_H4_TYPE_CMD, "HCI Command"}, + {HCI_H4_TYPE_ACL, "ACL Data"}, + {HCI_H4_TYPE_SCO, "SCO Data"}, + {HCI_H4_TYPE_EVT, "HCI Event"}, + {HCI_H4_TYPE_ISO, "ISO Data"}, + {0, NULL } +}; +static const value_string hci_h4_direction_vals[] = { + {P2P_DIR_SENT, "Sent"}, + {P2P_DIR_RECV, "Rcvd"}, + {P2P_DIR_UNKNOWN, "Unspecified"}, + {0, NULL} +}; + +void proto_register_hci_h4(void); +void proto_reg_handoff_hci_h4(void); + +static gint +dissect_hci_h4(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *data) +{ + guint8 type; + tvbuff_t *next_tvb; + proto_item *main_item; + proto_tree *main_tree; + proto_item *sub_item; + bluetooth_data_t *bluetooth_data; + + bluetooth_data = (bluetooth_data_t *) data; + + col_set_str(pinfo->cinfo, COL_PROTOCOL, "HCI H4"); + switch (pinfo->p2p_dir) { + + case P2P_DIR_SENT: + col_add_fstr(pinfo->cinfo, COL_INFO, "Sent "); + break; + + case P2P_DIR_RECV: + col_add_fstr(pinfo->cinfo, COL_INFO, "Rcvd "); + break; + + case P2P_DIR_UNKNOWN: + break; + + default: + col_add_fstr(pinfo->cinfo, COL_INFO, "Unknown direction %d ", + pinfo->p2p_dir); + break; + } + + type = tvb_get_guint8(tvb, 0); + + main_item = proto_tree_add_item(tree, proto_hci_h4, tvb, 0, 1, ENC_NA); + main_tree = proto_item_add_subtree(main_item, ett_hci_h4); + + sub_item = proto_tree_add_uint(main_tree, hf_hci_h4_direction, tvb, 0, 0, pinfo->p2p_dir); + proto_item_set_generated(sub_item); + + proto_tree_add_item(main_tree, hf_hci_h4_type, + tvb, 0, 1, ENC_LITTLE_ENDIAN); + col_append_str(pinfo->cinfo, COL_INFO, + val_to_str(type, hci_h4_type_vals, "Unknown HCI packet type 0x%02x")); + + next_tvb = tvb_new_subset_remaining(tvb, 1); + if (!dissector_try_uint_new(hci_h4_table, type, next_tvb, pinfo, tree, TRUE, bluetooth_data)) { + call_data_dissector(next_tvb, pinfo, tree); + } + + return 1; +} + + +void +proto_register_hci_h4(void) +{ + static hf_register_info hf[] = { + { &hf_hci_h4_type, + { "HCI Packet Type", "hci_h4.type", + FT_UINT8, BASE_HEX, VALS(hci_h4_type_vals), 0x0, + NULL, HFILL } + }, + { &hf_hci_h4_direction, + { "Direction", "hci_h4.direction", + FT_UINT8, BASE_HEX, VALS(hci_h4_direction_vals), 0x0, + "HCI Packet Direction Sent/Rcvd", HFILL } + } + }; + + static gint *ett[] = { + &ett_hci_h4, + }; + + proto_hci_h4 = proto_register_protocol("Bluetooth HCI H4", "HCI_H4", "hci_h4"); + + hci_h4_handle = register_dissector("hci_h4", dissect_hci_h4, proto_hci_h4); + + proto_register_field_array(proto_hci_h4, hf, array_length(hf)); + proto_register_subtree_array(ett, array_length(ett)); + + hci_h4_table = register_dissector_table("hci_h4.type", + "HCI H4 pdu type", proto_hci_h4, FT_UINT8, BASE_HEX); +} + +void +proto_reg_handoff_hci_h4(void) +{ + dissector_add_uint("bluetooth.encap", WTAP_ENCAP_BLUETOOTH_H4, hci_h4_handle); + dissector_add_uint("bluetooth.encap", WTAP_ENCAP_BLUETOOTH_H4_WITH_PHDR, hci_h4_handle); +} + +/* + * Editor modelines - https://www.wireshark.org/tools/modelines.html + * + * Local variables: + * c-basic-offset: 4 + * tab-width: 8 + * indent-tabs-mode: nil + * End: + * + * vi: set shiftwidth=4 tabstop=8 expandtab: + * :indentSize=4:tabSize=8:noTabs=true: + */ |