/* packet-usb-hid.c * * $Id$ * * USB HID dissector * By Adam Nielsen 2009 * * 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. */ #ifdef HAVE_CONFIG_H # include "config.h" #endif #include #include #include #include "packet-usb.h" #include "packet-usb-hid.h" /* protocols and header fields */ static int proto_usb_hid = -1; static int hf_usb_hid_item_bSize = -1; static int hf_usb_hid_item_bType = -1; static int hf_usb_hid_mainitem_bTag = -1; static int hf_usb_hid_globalitem_bTag = -1; static int hf_usb_hid_localitem_bTag = -1; static int hf_usb_hid_longitem_bTag = -1; static int hf_usb_hid_item_bDataSize = -1; static int hf_usb_hid_item_bLongItemTag = -1; static int hf_usb_hid_item_unk_data = -1; static int hf_usb_hid_mainitem_bit0 = -1; static int hf_usb_hid_mainitem_bit1 = -1; static int hf_usb_hid_mainitem_bit2 = -1; static int hf_usb_hid_mainitem_bit3 = -1; static int hf_usb_hid_mainitem_bit4 = -1; static int hf_usb_hid_mainitem_bit5 = -1; static int hf_usb_hid_mainitem_bit6 = -1; static int hf_usb_hid_mainitem_bit7 = -1; static int hf_usb_hid_mainitem_bit7_input = -1; static int hf_usb_hid_mainitem_bit8 = -1; static int hf_usb_hid_mainitem_colltype = -1; static int hf_usb_hid_globalitem_usage = -1; static int hf_usb_hid_globalitem_log_min = -1; static int hf_usb_hid_globalitem_log_max = -1; static int hf_usb_hid_globalitem_phy_min = -1; static int hf_usb_hid_globalitem_phy_max = -1; static int hf_usb_hid_globalitem_unit_exp = -1; static int hf_usb_hid_globalitem_unit_sys = -1; static int hf_usb_hid_globalitem_unit_len = -1; static int hf_usb_hid_globalitem_unit_mass = -1; static int hf_usb_hid_globalitem_unit_time = -1; static int hf_usb_hid_globalitem_unit_temp = -1; static int hf_usb_hid_globalitem_unit_current = -1; static int hf_usb_hid_globalitem_unit_brightness = -1; static int hf_usb_hid_globalitem_report_size = -1; static int hf_usb_hid_globalitem_report_id = -1; static int hf_usb_hid_globalitem_report_count = -1; static int hf_usb_hid_globalitem_push = -1; static int hf_usb_hid_globalitem_pop = -1; static int hf_usb_hid_localitem_usage = -1; static int hf_usb_hid_localitem_usage_min = -1; static int hf_usb_hid_localitem_usage_max = -1; static int hf_usb_hid_localitem_desig_index = -1; static int hf_usb_hid_localitem_desig_min = -1; static int hf_usb_hid_localitem_desig_max = -1; static int hf_usb_hid_localitem_string_index = -1; static int hf_usb_hid_localitem_string_min = -1; static int hf_usb_hid_localitem_string_max = -1; static int hf_usb_hid_localitem_delimiter = -1; static gint ett_usb_hid_report = -1; static gint ett_usb_hid_item_header = -1; static gint ett_usb_hid_wValue = -1; static int hf_usb_hid_request = -1; static int hf_usb_hid_value = -1; static int hf_usb_hid_index = -1; static int hf_usb_hid_length = -1; static int hf_usb_hid_report_type = -1; static int hf_usb_hid_report_id = -1; static int hf_usb_hid_duration = -1; static int hf_usb_hid_zero = -1; static const true_false_string tfs_mainitem_bit0 = {"Data", "Constant"}; static const true_false_string tfs_mainitem_bit1 = {"Array", "Variable"}; static const true_false_string tfs_mainitem_bit2 = {"Absolute", "Relative"}; static const true_false_string tfs_mainitem_bit3 = {"No wrap", "Wrap"}; static const true_false_string tfs_mainitem_bit4 = {"Linear", "Nonlinear"}; static const true_false_string tfs_mainitem_bit5 = {"Preferred state", "No preferred state"}; static const true_false_string tfs_mainitem_bit6 = {"No null position", "Null state"}; static const true_false_string tfs_mainitem_bit7 = {"Non-volatile", "Volatile"}; static const true_false_string tfs_mainitem_bit8 = {"Bit field", "Buffered bytes"}; struct usb_hid_global_state { unsigned int usage_page; }; #define USBHID_SIZE_MASK 0x03 #define USBHID_TYPE_MASK 0x0C #define USBHID_TAG_MASK 0xF0 static const value_string usb_hid_item_bSize_vals[] = { {0, "0 bytes"}, {1, "1 byte"}, {2, "2 bytes"}, {3, "4 bytes"}, {0, NULL} }; #define USBHID_ITEMTYPE_MAIN 0 #define USBHID_ITEMTYPE_GLOBAL 1 #define USBHID_ITEMTYPE_LOCAL 2 #define USBHID_ITEMTYPE_LONG 3 static const value_string usb_hid_item_bType_vals[] = { {USBHID_ITEMTYPE_MAIN, "Main"}, {USBHID_ITEMTYPE_GLOBAL, "Global"}, {USBHID_ITEMTYPE_LOCAL, "Local"}, {USBHID_ITEMTYPE_LONG, "Long item"}, {0, NULL} }; #define USBHID_MAINITEM_TAG_INPUT 8 #define USBHID_MAINITEM_TAG_OUTPUT 9 #define USBHID_MAINITEM_TAG_FEATURE 11 #define USBHID_MAINITEM_TAG_COLLECTION 10 #define USBHID_MAINITEM_TAG_ENDCOLLECTION 12 static const value_string usb_hid_mainitem_bTag_vals[] = { {USBHID_MAINITEM_TAG_INPUT, "Input"}, {USBHID_MAINITEM_TAG_OUTPUT, "Output"}, {USBHID_MAINITEM_TAG_FEATURE, "Feature"}, {USBHID_MAINITEM_TAG_COLLECTION, "Collection"}, {USBHID_MAINITEM_TAG_ENDCOLLECTION, "End collection"}, {0, NULL} }; #define USBHID_GLOBALITEM_TAG_USAGE_PAGE 0 #define USBHID_GLOBALITEM_TAG_LOG_MIN 1 #define USBHID_GLOBALITEM_TAG_LOG_MAX 2 #define USBHID_GLOBALITEM_TAG_PHY_MIN 3 #define USBHID_GLOBALITEM_TAG_PHY_MAX 4 #define USBHID_GLOBALITEM_TAG_UNIT_EXP 5 #define USBHID_GLOBALITEM_TAG_UNIT 6 #define USBHID_GLOBALITEM_TAG_REPORT_SIZE 7 #define USBHID_GLOBALITEM_TAG_REPORT_ID 8 #define USBHID_GLOBALITEM_TAG_REPORT_COUNT 9 #define USBHID_GLOBALITEM_TAG_PUSH 10 #define USBHID_GLOBALITEM_TAG_POP 11 static const value_string usb_hid_globalitem_bTag_vals[] = { {USBHID_GLOBALITEM_TAG_USAGE_PAGE, "Usage"}, {USBHID_GLOBALITEM_TAG_LOG_MIN, "Logical minimum"}, {USBHID_GLOBALITEM_TAG_LOG_MAX, "Logical maximum"}, {USBHID_GLOBALITEM_TAG_PHY_MIN, "Physical minimum"}, {USBHID_GLOBALITEM_TAG_PHY_MAX, "Physical maximum"}, {USBHID_GLOBALITEM_TAG_UNIT_EXP, "Unit exponent"}, {USBHID_GLOBALITEM_TAG_UNIT, "Units"}, {USBHID_GLOBALITEM_TAG_REPORT_SIZE, "Report size"}, {USBHID_GLOBALITEM_TAG_REPORT_ID, "Report ID"}, {USBHID_GLOBALITEM_TAG_REPORT_COUNT, "Report count"}, {USBHID_GLOBALITEM_TAG_PUSH, "Push"}, {USBHID_GLOBALITEM_TAG_POP, "Pop"}, {12, "[Reserved]"}, {13, "[Reserved]"}, {14, "[Reserved]"}, {15, "[Reserved]"}, {0, NULL} }; #define USBHID_LOCALITEM_TAG_USAGE_PAGE 0 #define USBHID_LOCALITEM_TAG_USAGE_MIN 1 #define USBHID_LOCALITEM_TAG_USAGE_MAX 2 #define USBHID_LOCALITEM_TAG_DESIG_INDEX 3 #define USBHID_LOCALITEM_TAG_DESIG_MIN 4 #define USBHID_LOCALITEM_TAG_DESIG_MAX 5 /* No 6 in spec */ #define USBHID_LOCALITEM_TAG_STRING_INDEX 7 #define USBHID_LOCALITEM_TAG_STRING_MIN 8 #define USBHID_LOCALITEM_TAG_STRING_MAX 9 #define USBHID_LOCALITEM_TAG_DELIMITER 10 /* Also listed as reserved in spec! */ static const value_string usb_hid_localitem_bTag_vals[] = { {USBHID_LOCALITEM_TAG_USAGE_PAGE, "Usage"}, {USBHID_LOCALITEM_TAG_USAGE_MIN, "Usage minimum"}, {USBHID_LOCALITEM_TAG_USAGE_MAX, "Usage maximum"}, {USBHID_LOCALITEM_TAG_DESIG_INDEX, "Designator index"}, {USBHID_LOCALITEM_TAG_DESIG_MIN, "Designator minimum"}, {USBHID_LOCALITEM_TAG_DESIG_MAX, "Designator maximum"}, {USBHID_LOCALITEM_TAG_STRING_INDEX, "String index"}, {USBHID_LOCALITEM_TAG_STRING_MIN, "String minimum"}, {USBHID_LOCALITEM_TAG_STRING_MAX, "String maximum"}, {USBHID_LOCALITEM_TAG_DELIMITER, "Delimiter"}, {11, "[Reserved]"}, {12, "[Reserved]"}, {13, "[Reserved]"}, {14, "[Reserved]"}, {15, "[Reserved]"}, {0, NULL} }; static const value_string usb_hid_longitem_bTag_vals[] = { {15, "Long item"}, {0, NULL} }; static const range_string usb_hid_mainitem_colltype_vals[] = { {0x00, 0x00, "Physical"}, {0x01, 0x01, "Application"}, {0x02, 0x02, "Logical"}, {0x03, 0x03, "Report"}, {0x04, 0x04, "Named array"}, {0x05, 0x05, "Usage switch"}, {0x06, 0x06, "Usage modifier"}, {0x07, 0x7F, "[Reserved]"}, {0x80, 0xFF, "[Vendor-defined]"}, {0, 0, NULL} }; static const value_string usb_hid_globalitem_unit_exp_vals[] = { {0x0, "n^0"}, {0x1, "n^1"}, {0x2, "n^2"}, {0x3, "n^3"}, {0x4, "n^4"}, {0x5, "n^5"}, {0x6, "n^6"}, {0x7, "n^7"}, {0x8, "n^-8"}, {0x9, "n^-7"}, {0xA, "n^-6"}, {0xB, "n^-5"}, {0xC, "n^-4"}, {0xD, "n^-3"}, {0xE, "n^-2"}, {0xF, "n^-1"}, {0, NULL} }; static const range_string usb_hid_item_usage_vals[] = { {0x00, 0x00, "Undefined"}, {0x01, 0x01, "Generic desktop controls"}, {0x02, 0x02, "Simulation controls"}, {0x03, 0x03, "VR controls"}, {0x04, 0x04, "Sport controls"}, {0x05, 0x05, "Game controls"}, {0x06, 0x06, "Generic device controls"}, {0x07, 0x07, "Keyboard/keypad"}, {0x08, 0x08, "LEDs"}, {0x09, 0x09, "Button"}, {0x0A, 0x0A, "Ordinal"}, {0x0B, 0x0B, "Telephony"}, {0x0C, 0x0C, "Consumer"}, {0x0D, 0x0D, "Digitizer"}, {0x0E, 0x0E, "[Reserved]"}, {0x0F, 0x0F, "Physical Interface Device (PID) page"}, {0x10, 0x10, "Unicode"}, {0x11, 0x13, "[Reserved]"}, {0x14, 0x14, "Alphanumeric display"}, {0x15, 0x3F, "[Reserved]"}, {0x40, 0x40, "Medical instruments"}, {0x41, 0x7F, "[Reserved]"}, {0x80, 0x83, "Monitor page"}, {0x84, 0x87, "Power page"}, {0x88, 0x8B, "[Reserved]"}, {0x8C, 0x8C, "Bar code scanner page"}, {0x8D, 0x8D, "Scale page"}, {0x8E, 0x8E, "Magnetic Stripe Reading (MSR) devices"}, {0x8F, 0x8F, "[Reserved Point of Sale page]"}, {0x90, 0x90, "Camera control page"}, {0x91, 0x91, "Arcade page"}, {0x92, 0xFEFF, "[Reserved]"}, {0xFF00, 0xFFFF, "[Vendor-defined]"}, {0, 0, NULL} }; /* Dissector for the data in a HID main report. */ static int dissect_usb_hid_report_mainitem_data(packet_info *pinfo _U_, proto_tree *tree, tvbuff_t *tvb, int offset, unsigned int bSize, unsigned int bTag) { switch (bTag) { case USBHID_MAINITEM_TAG_INPUT: case USBHID_MAINITEM_TAG_OUTPUT: case USBHID_MAINITEM_TAG_FEATURE: proto_tree_add_item(tree, hf_usb_hid_mainitem_bit0, tvb, offset, bSize, ENC_LITTLE_ENDIAN); proto_tree_add_item(tree, hf_usb_hid_mainitem_bit1, tvb, offset, bSize, ENC_LITTLE_ENDIAN); proto_tree_add_item(tree, hf_usb_hid_mainitem_bit2, tvb, offset, bSize, ENC_LITTLE_ENDIAN); proto_tree_add_item(tree, hf_usb_hid_mainitem_bit3, tvb, offset, bSize, ENC_LITTLE_ENDIAN); proto_tree_add_item(tree, hf_usb_hid_mainitem_bit4, tvb, offset, bSize, ENC_LITTLE_ENDIAN); proto_tree_add_item(tree, hf_usb_hid_mainitem_bit5, tvb, offset, bSize, ENC_LITTLE_ENDIAN); proto_tree_add_item(tree, hf_usb_hid_mainitem_bit6, tvb, offset, bSize, ENC_LITTLE_ENDIAN); if (bTag == USBHID_MAINITEM_TAG_INPUT) { proto_tree_add_item(tree, hf_usb_hid_mainitem_bit7_input, tvb, offset, bSize, ENC_LITTLE_ENDIAN); } else { proto_tree_add_item(tree, hf_usb_hid_mainitem_bit7, tvb, offset, bSize, ENC_LITTLE_ENDIAN); } if (bSize > 1) { proto_tree_add_item(tree, hf_usb_hid_mainitem_bit8, tvb, offset, bSize, ENC_LITTLE_ENDIAN); } else { proto_tree_add_text(tree, tvb, offset, 0, "Bits or bytes: Buffered bytes (default, no second byte present)"); } break; case USBHID_MAINITEM_TAG_COLLECTION: proto_tree_add_item(tree, hf_usb_hid_mainitem_colltype, tvb, offset, 1, ENC_LITTLE_ENDIAN); break; case USBHID_MAINITEM_TAG_ENDCOLLECTION: /* No item data */ break; default: proto_tree_add_item(tree, hf_usb_hid_item_unk_data, tvb, offset, bSize, ENC_NA); break; } offset += bSize; return offset; } /* Dissector for the data in a HID main report. */ static int dissect_usb_hid_report_globalitem_data(packet_info *pinfo _U_, proto_tree *tree, tvbuff_t *tvb, int offset, unsigned int bSize, unsigned int bTag, struct usb_hid_global_state *global) { switch (bTag) { case USBHID_GLOBALITEM_TAG_USAGE_PAGE: switch (bSize) { case 1: global->usage_page = tvb_get_guint8(tvb, offset); break; case 2: global->usage_page = tvb_get_letohs(tvb, offset); break; case 3: global->usage_page = tvb_get_letoh24(tvb, offset); break; case 4: global->usage_page = tvb_get_letohl(tvb, offset); break; default: global->usage_page = 0; break; } proto_tree_add_item(tree, hf_usb_hid_globalitem_usage, tvb, offset, bSize, ENC_LITTLE_ENDIAN); break; case USBHID_GLOBALITEM_TAG_LOG_MIN: proto_tree_add_item(tree, hf_usb_hid_globalitem_log_min, tvb, offset, bSize, ENC_LITTLE_ENDIAN); break; case USBHID_GLOBALITEM_TAG_LOG_MAX: proto_tree_add_item(tree, hf_usb_hid_globalitem_log_max, tvb, offset, bSize, ENC_LITTLE_ENDIAN); break; case USBHID_GLOBALITEM_TAG_PHY_MIN: proto_tree_add_item(tree, hf_usb_hid_globalitem_phy_min, tvb, offset, bSize, ENC_LITTLE_ENDIAN); break; case USBHID_GLOBALITEM_TAG_PHY_MAX: proto_tree_add_item(tree, hf_usb_hid_globalitem_phy_max, tvb, offset, bSize, ENC_LITTLE_ENDIAN); break; case USBHID_GLOBALITEM_TAG_UNIT_EXP: proto_tree_add_item(tree, hf_usb_hid_globalitem_unit_exp, tvb, offset, bSize, ENC_LITTLE_ENDIAN); break; case USBHID_GLOBALITEM_TAG_UNIT: proto_tree_add_item(tree, hf_usb_hid_globalitem_unit_sys, tvb, offset, bSize, ENC_LITTLE_ENDIAN); proto_tree_add_item(tree, hf_usb_hid_globalitem_unit_len, tvb, offset, bSize, ENC_LITTLE_ENDIAN); proto_tree_add_item(tree, hf_usb_hid_globalitem_unit_mass, tvb, offset, bSize, ENC_LITTLE_ENDIAN); proto_tree_add_item(tree, hf_usb_hid_globalitem_unit_time, tvb, offset, bSize, ENC_LITTLE_ENDIAN); proto_tree_add_item(tree, hf_usb_hid_globalitem_unit_temp, tvb, offset, bSize, ENC_LITTLE_ENDIAN); proto_tree_add_item(tree, hf_usb_hid_globalitem_unit_current, tvb, offset, bSize, ENC_LITTLE_ENDIAN); proto_tree_add_item(tree, hf_usb_hid_globalitem_unit_brightness, tvb, offset, bSize, ENC_LITTLE_ENDIAN); break; case USBHID_GLOBALITEM_TAG_REPORT_SIZE: proto_tree_add_item(tree, hf_usb_hid_globalitem_report_size, tvb, offset, bSize, ENC_LITTLE_ENDIAN); break; case USBHID_GLOBALITEM_TAG_REPORT_ID: proto_tree_add_item(tree, hf_usb_hid_globalitem_report_id, tvb, offset, bSize, ENC_LITTLE_ENDIAN); break; case USBHID_GLOBALITEM_TAG_REPORT_COUNT: proto_tree_add_item(tree, hf_usb_hid_globalitem_report_count, tvb, offset, bSize, ENC_LITTLE_ENDIAN); break; case USBHID_GLOBALITEM_TAG_PUSH: proto_tree_add_item(tree, hf_usb_hid_globalitem_push, tvb, offset, bSize, ENC_LITTLE_ENDIAN); break; case USBHID_GLOBALITEM_TAG_POP: proto_tree_add_item(tree, hf_usb_hid_globalitem_pop, tvb, offset, bSize, ENC_LITTLE_ENDIAN); break; default: proto_tree_add_item(tree, hf_usb_hid_item_unk_data, tvb, offset, bSize, ENC_NA); break; } offset += bSize; return offset; } /* Dissector for the data in a HID main report. */ static int dissect_usb_hid_report_localitem_data(packet_info *pinfo _U_, proto_tree *tree, tvbuff_t *tvb, int offset, unsigned int bSize, unsigned int bTag, struct usb_hid_global_state *global) { unsigned int usage_page = 0xffffffff; /* in case bSize == 0 */ switch (bTag) { case USBHID_LOCALITEM_TAG_USAGE_PAGE: if (bSize > 2) { /* Full page ID */ proto_tree_add_item(tree, hf_usb_hid_localitem_usage, tvb, offset, bSize, ENC_LITTLE_ENDIAN); } else { /* Only lower few bits given, need to combine with last global ID */ if (bSize == 1) usage_page = (global->usage_page & 0xFFFFFF00) | tvb_get_guint8(tvb, offset); else if (bSize == 2) usage_page = (global->usage_page & 0xFFFF0000) | tvb_get_ntohs(tvb, offset); proto_tree_add_text(tree, tvb, offset, bSize, "Usage: %s (0x%08x)", rval_to_str(usage_page, usb_hid_item_usage_vals, "[Unknown page!]"), usage_page); } break; case USBHID_LOCALITEM_TAG_USAGE_MIN: proto_tree_add_item(tree, hf_usb_hid_localitem_usage_min, tvb, offset, bSize, ENC_LITTLE_ENDIAN); break; case USBHID_LOCALITEM_TAG_USAGE_MAX: proto_tree_add_item(tree, hf_usb_hid_localitem_usage, tvb, offset, bSize, ENC_LITTLE_ENDIAN); break; case USBHID_LOCALITEM_TAG_DESIG_INDEX: proto_tree_add_item(tree, hf_usb_hid_localitem_desig_index, tvb, offset, bSize, ENC_LITTLE_ENDIAN); break; case USBHID_LOCALITEM_TAG_DESIG_MIN: proto_tree_add_item(tree, hf_usb_hid_localitem_desig_min, tvb, offset, bSize, ENC_LITTLE_ENDIAN); break; case USBHID_LOCALITEM_TAG_DESIG_MAX: proto_tree_add_item(tree, hf_usb_hid_localitem_desig_max, tvb, offset, bSize, ENC_LITTLE_ENDIAN); break; case USBHID_LOCALITEM_TAG_STRING_INDEX: proto_tree_add_item(tree, hf_usb_hid_localitem_string_index, tvb, offset, bSize, ENC_LITTLE_ENDIAN); break; case USBHID_LOCALITEM_TAG_STRING_MIN: proto_tree_add_item(tree, hf_usb_hid_localitem_string_min, tvb, offset, bSize, ENC_LITTLE_ENDIAN); break; case USBHID_LOCALITEM_TAG_STRING_MAX: proto_tree_add_item(tree, hf_usb_hid_localitem_string_max, tvb, offset, bSize, ENC_LITTLE_ENDIAN); break; case USBHID_LOCALITEM_TAG_DELIMITER: proto_tree_add_item(tree, hf_usb_hid_localitem_delimiter, tvb, offset, bSize, ENC_LITTLE_ENDIAN); break; default: proto_tree_add_item(tree, hf_usb_hid_item_unk_data, tvb, offset, bSize, ENC_NA); break; } offset += bSize; return offset; } /* Dissector for individual HID report items. Recursive. */ static int dissect_usb_hid_report_item(packet_info *pinfo _U_, proto_tree *parent_tree, tvbuff_t *tvb, int offset, usb_trans_info_t *usb_trans_info _U_, usb_conv_info_t *usb_conv_info _U_, const struct usb_hid_global_state *global) { proto_item *item=NULL, *subitem=NULL; proto_tree *tree=NULL, *subtree=NULL; int old_offset; unsigned int tmp; unsigned int bSize, bType, bTag; const value_string *usb_hid_cur_bTag_vals; int hf_usb_hid_curitem_bTag; struct usb_hid_global_state cur_global; memcpy(&cur_global, global, sizeof(struct usb_hid_global_state)); while (tvb_reported_length_remaining(tvb, offset)) { old_offset=offset; tmp = tvb_get_guint8(tvb, offset); bSize = tmp & USBHID_SIZE_MASK; if (bSize == 3) bSize++; /* 3 == four bytes */ bType = (tmp & USBHID_TYPE_MASK) >> 2; bTag = (tmp & USBHID_TAG_MASK) >> 4; switch (bType) { case USBHID_ITEMTYPE_MAIN: hf_usb_hid_curitem_bTag = hf_usb_hid_mainitem_bTag; usb_hid_cur_bTag_vals = usb_hid_mainitem_bTag_vals; break; case USBHID_ITEMTYPE_GLOBAL: hf_usb_hid_curitem_bTag = hf_usb_hid_globalitem_bTag; usb_hid_cur_bTag_vals = usb_hid_globalitem_bTag_vals; break; case USBHID_ITEMTYPE_LOCAL: hf_usb_hid_curitem_bTag = hf_usb_hid_localitem_bTag; usb_hid_cur_bTag_vals = usb_hid_localitem_bTag_vals; break; default: /* Only USBHID_ITEMTYPE_LONG, but keep compiler happy */ hf_usb_hid_curitem_bTag = hf_usb_hid_longitem_bTag; usb_hid_cur_bTag_vals = usb_hid_longitem_bTag_vals; break; } subitem = proto_tree_add_text(parent_tree, tvb, offset, bSize + 1, "%s item (%s)", val_to_str(bType, usb_hid_item_bType_vals, "Unknown/%u"), val_to_str(bTag, usb_hid_cur_bTag_vals, "Unknown/%u tag") ); subtree = proto_item_add_subtree(subitem, ett_usb_hid_item_header); item = proto_tree_add_text(subtree, tvb, offset, 1, "Header"); tree = proto_item_add_subtree(item, ett_usb_hid_item_header); proto_tree_add_item(tree, hf_usb_hid_item_bSize, tvb, offset, 1, ENC_LITTLE_ENDIAN); proto_tree_add_item(tree, hf_usb_hid_item_bType, tvb, offset, 1, ENC_LITTLE_ENDIAN); proto_tree_add_item(tree, hf_usb_hid_curitem_bTag, tvb, offset, 1, ENC_LITTLE_ENDIAN); offset++; if ((bType == 3) && (bTag == 16)) { /* Long item */ bSize = tvb_get_guint8(tvb, offset); proto_tree_add_item(subtree, hf_usb_hid_item_bDataSize, tvb, offset, 1, ENC_LITTLE_ENDIAN); offset++; proto_tree_add_item(subtree, hf_usb_hid_item_bLongItemTag, tvb, offset, 1, ENC_LITTLE_ENDIAN); offset++; proto_tree_add_item(subtree, hf_usb_hid_item_unk_data, tvb, offset, bSize, ENC_NA); offset += bSize; } else { /* Short item */ switch (bType) { case USBHID_ITEMTYPE_MAIN: offset = dissect_usb_hid_report_mainitem_data(pinfo, subtree, tvb, offset, bSize, bTag); break; case USBHID_ITEMTYPE_GLOBAL: offset = dissect_usb_hid_report_globalitem_data(pinfo, subtree, tvb, offset, bSize, bTag, &cur_global); break; case USBHID_ITEMTYPE_LOCAL: offset = dissect_usb_hid_report_localitem_data(pinfo, subtree, tvb, offset, bSize, bTag, &cur_global); break; default: /* Only USBHID_ITEMTYPE_LONG, but keep compiler happy */ proto_tree_add_item(subtree, hf_usb_hid_item_unk_data, tvb, offset, bSize, ENC_NA); offset += bSize; break; } } if (bType == USBHID_ITEMTYPE_MAIN) { if (bTag == USBHID_MAINITEM_TAG_COLLECTION) { /* Begin collection, nest following elements under us */ offset = dissect_usb_hid_report_item(pinfo, subtree, tvb, offset, usb_trans_info, usb_conv_info, &cur_global); proto_item_set_len(subitem, offset-old_offset); } else if (bTag == USBHID_MAINITEM_TAG_ENDCOLLECTION) { /* End collection, break out to parent tree item */ break; } } } return offset; } /* Dissector for HID "GET DESCRIPTOR" subtype. */ int dissect_usb_hid_get_report_descriptor(packet_info *pinfo _U_, proto_tree *parent_tree, tvbuff_t *tvb, int offset, usb_trans_info_t *usb_trans_info _U_, usb_conv_info_t *usb_conv_info _U_) { proto_item *item=NULL; proto_tree *tree=NULL; int old_offset=offset; struct usb_hid_global_state initial_global; memset(&initial_global, 0, sizeof(struct usb_hid_global_state)); if (parent_tree) { item = proto_tree_add_protocol_format(parent_tree, proto_usb_hid, tvb, offset, -1, "HID Report"); tree = proto_item_add_subtree(item, ett_usb_hid_report); offset = dissect_usb_hid_report_item(pinfo, tree, tvb, offset, usb_trans_info, usb_conv_info, &initial_global); proto_item_set_len(item, offset-old_offset); } return offset; } /* Dissector for HID GET_REPORT request. See USBHID 1.11, Chapter 7.2.1 Get_Report Request */ static void dissect_usb_hid_get_report(packet_info *pinfo _U_, proto_tree *tree, tvbuff_t *tvb, int offset, gboolean is_request, usb_trans_info_t *usb_trans_info _U_, usb_conv_info_t *usb_conv_info _U_) { proto_item *item = NULL; proto_tree *subtree = NULL; if (is_request) { item = proto_tree_add_item(tree, hf_usb_hid_value, tvb, offset, 2, ENC_LITTLE_ENDIAN); subtree = proto_item_add_subtree(item, ett_usb_hid_wValue); /* Report Type in the high byte, Report ID in the low byte */ proto_tree_add_item(subtree, hf_usb_hid_report_id, tvb, offset, 1, ENC_LITTLE_ENDIAN); offset++; proto_tree_add_item(subtree, hf_usb_hid_report_type, tvb, offset, 1, ENC_LITTLE_ENDIAN); offset++; proto_tree_add_item(tree, hf_usb_hid_index, tvb, offset, 2, ENC_LITTLE_ENDIAN); offset += 2; proto_tree_add_item(tree, hf_usb_hid_length, tvb, offset, 2, ENC_LITTLE_ENDIAN); /*offset += 2;*/ } else { } } /* Dissector for HID SET_REPORT request. See USBHID 1.11, Chapter 7.2.2 Set_Report Request */ static void dissect_usb_hid_set_report(packet_info *pinfo _U_, proto_tree *tree, tvbuff_t *tvb, int offset, gboolean is_request, usb_trans_info_t *usb_trans_info _U_, usb_conv_info_t *usb_conv_info _U_) { proto_item *item = NULL; proto_tree *subtree = NULL; if (is_request) { item = proto_tree_add_item(tree, hf_usb_hid_value, tvb, offset, 2, ENC_LITTLE_ENDIAN); subtree = proto_item_add_subtree(item, ett_usb_hid_wValue); proto_tree_add_item(subtree, hf_usb_hid_report_id, tvb, offset, 1, ENC_LITTLE_ENDIAN); offset++; proto_tree_add_item(subtree, hf_usb_hid_report_type, tvb, offset, 1, ENC_LITTLE_ENDIAN); offset++; proto_tree_add_item(tree, hf_usb_hid_index, tvb, offset, 2, ENC_LITTLE_ENDIAN); offset += 2; proto_tree_add_item(tree, hf_usb_hid_length, tvb, offset, 2, ENC_LITTLE_ENDIAN); /*offset += 2;*/ } else { } } /* Dissector for HID GET_IDLE request. See USBHID 1.11, Chapter 7.2.3 Get_Idle Request */ static void dissect_usb_hid_get_idle(packet_info *pinfo _U_, proto_tree *tree, tvbuff_t *tvb, int offset, gboolean is_request, usb_trans_info_t *usb_trans_info _U_, usb_conv_info_t *usb_conv_info _U_) { proto_item *item = NULL; proto_tree *subtree = NULL; if (is_request) { item = proto_tree_add_item(tree, hf_usb_hid_value, tvb, offset, 2, ENC_LITTLE_ENDIAN); subtree = proto_item_add_subtree(item, ett_usb_hid_wValue); proto_tree_add_item(subtree, hf_usb_hid_report_id, tvb, offset, 1, ENC_LITTLE_ENDIAN); offset++; proto_tree_add_item(subtree, hf_usb_hid_zero, tvb, offset, 1, ENC_LITTLE_ENDIAN); offset++; proto_tree_add_item(tree, hf_usb_hid_index, tvb, offset, 2, ENC_LITTLE_ENDIAN); offset += 2; proto_tree_add_item(tree, hf_usb_hid_length, tvb, offset, 2, ENC_LITTLE_ENDIAN); /*offset += 2;*/ } else { } } /* Dissector for HID SET_IDLE request. See USBHID 1.11, Chapter 7.2.4 Set_Idle Request */ static void dissect_usb_hid_set_idle(packet_info *pinfo _U_, proto_tree *tree, tvbuff_t *tvb, int offset, gboolean is_request, usb_trans_info_t *usb_trans_info _U_, usb_conv_info_t *usb_conv_info _U_) { proto_item *item = NULL; proto_tree *subtree = NULL; if (is_request) { item = proto_tree_add_item(tree, hf_usb_hid_value, tvb, offset, 2, ENC_LITTLE_ENDIAN); subtree = proto_item_add_subtree(item, ett_usb_hid_wValue); /* Duration in the high byte, Report ID in the low byte */ proto_tree_add_item(subtree, hf_usb_hid_report_id, tvb, offset, 1, ENC_LITTLE_ENDIAN); offset++; proto_tree_add_item(subtree, hf_usb_hid_duration, tvb, offset, 1, ENC_LITTLE_ENDIAN); offset++; proto_tree_add_item(tree, hf_usb_hid_index, tvb, offset, 2, ENC_LITTLE_ENDIAN); offset += 2; proto_tree_add_item(tree, hf_usb_hid_length, tvb, offset, 2, ENC_LITTLE_ENDIAN); /*offset += 2;*/ } else { } } /* Dissector for HID GET_PROTOCOL request. See USBHID 1.11, Chapter 7.2.5 Get_Protocol Request */ static void dissect_usb_hid_get_protocol(packet_info *pinfo _U_, proto_tree *tree, tvbuff_t *tvb, int offset, gboolean is_request, usb_trans_info_t *usb_trans_info _U_, usb_conv_info_t *usb_conv_info _U_) { if (is_request) { proto_tree_add_item(tree, hf_usb_hid_value, tvb, offset, 2, ENC_LITTLE_ENDIAN); offset += 2; proto_tree_add_item(tree, hf_usb_hid_index, tvb, offset, 2, ENC_LITTLE_ENDIAN); offset += 2; proto_tree_add_item(tree, hf_usb_hid_length, tvb, offset, 2, ENC_LITTLE_ENDIAN); /*offset += 2;*/ } else { } } /* Dissector for HID SET_PROTOCOL request. See USBHID 1.11, Chapter 7.2.6 Set_Protocol Request */ static void dissect_usb_hid_set_protocol(packet_info *pinfo _U_, proto_tree *tree, tvbuff_t *tvb, int offset, gboolean is_request, usb_trans_info_t *usb_trans_info _U_, usb_conv_info_t *usb_conv_info _U_) { if (is_request) { proto_tree_add_item(tree, hf_usb_hid_value, tvb, offset, 2, ENC_LITTLE_ENDIAN); offset += 2; proto_tree_add_item(tree, hf_usb_hid_index, tvb, offset, 2, ENC_LITTLE_ENDIAN); offset += 2; proto_tree_add_item(tree, hf_usb_hid_length, tvb, offset, 2, ENC_LITTLE_ENDIAN); /*offset += 2;*/ } else { } } typedef void (*usb_setup_dissector)(packet_info *pinfo, proto_tree *tree, tvbuff_t *tvb, int offset, gboolean is_request, usb_trans_info_t *usb_trans_info, usb_conv_info_t *usb_conv_info); typedef struct _usb_setup_dissector_table_t { guint8 request; usb_setup_dissector dissector; } usb_setup_dissector_table_t; /* USBHID 1.11, Chapter 7.2 Class-Specific Requests */ #define USB_HID_SETUP_GET_REPORT 0x01 #define USB_HID_SETUP_GET_IDLE 0x02 #define USB_HID_SETUP_GET_PROTOCOL 0x03 /* 0x04..0x08: Reserved */ #define USB_HID_SETUP_SET_REPORT 0x09 #define USB_HID_SETUP_SET_IDLE 0x0A #define USB_HID_SETUP_SET_PROTOCOL 0x0B static const usb_setup_dissector_table_t setup_dissectors[] = { { USB_HID_SETUP_GET_REPORT, dissect_usb_hid_get_report }, { USB_HID_SETUP_GET_IDLE, dissect_usb_hid_get_idle }, { USB_HID_SETUP_GET_PROTOCOL, dissect_usb_hid_get_protocol }, { USB_HID_SETUP_SET_REPORT, dissect_usb_hid_set_report }, { USB_HID_SETUP_SET_IDLE, dissect_usb_hid_set_idle }, { USB_HID_SETUP_SET_PROTOCOL, dissect_usb_hid_set_protocol }, { 0, NULL } }; static const value_string setup_request_names_vals[] = { { USB_HID_SETUP_GET_REPORT, "GET_REPORT" }, { USB_HID_SETUP_GET_IDLE, "GET_IDLE" }, { USB_HID_SETUP_GET_PROTOCOL, "GET_PROTOCOL" }, { USB_HID_SETUP_SET_REPORT, "SET_REPORT" }, { USB_HID_SETUP_SET_IDLE, "SET_IDLE" }, { USB_HID_SETUP_SET_PROTOCOL, "SET_PROTOCOL" }, { 0, NULL } }; static const value_string usb_hid_report_type_vals[] = { { 1, "Input" }, { 2, "Output" }, { 3, "Feature" }, { 0, NULL } }; /* Dissector for HID class-specific control request as defined in * USBHID 1.11, Chapter 7.2. * Returns TRUE if a class specific dissector was found * and FALSE otherwise. */ static gint dissect_usb_hid_control(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree) { gboolean is_request; usb_conv_info_t *usb_conv_info; usb_trans_info_t *usb_trans_info; int offset = 0; usb_setup_dissector dissector; const usb_setup_dissector_table_t *tmp; is_request = (pinfo->srcport==NO_ENDPOINT); usb_conv_info = pinfo->usb_conv_info; usb_trans_info = usb_conv_info->usb_trans_info; /* See if we can find a class specific dissector for this request */ dissector = NULL; /* Check valid values for bmRequestType. See Chapter 7.2 in USBHID 1.11 */ if ((usb_trans_info->setup.requesttype & 0x7F) == ((RQT_SETUP_TYPE_CLASS << 5) | RQT_SETUP_RECIPIENT_INTERFACE)) { for (tmp = setup_dissectors; tmp->dissector; tmp++) { if (tmp->request == usb_trans_info->setup.request) { dissector = tmp->dissector; break; } } } /* No, we could not find any class specific dissector for this request * return FALSE and let USB try any of the standard requests. */ if (!dissector) { return FALSE; } col_set_str(pinfo->cinfo, COL_PROTOCOL, "USBHID"); if (check_col(pinfo->cinfo, COL_INFO)) { col_add_fstr(pinfo->cinfo, COL_INFO, "%s %s", val_to_str(usb_trans_info->setup.request, setup_request_names_vals, "Unknown type %x"), is_request ? "Request" : "Response"); } if (is_request) { proto_tree_add_item(tree, hf_usb_hid_request, tvb, offset, 1, ENC_LITTLE_ENDIAN); offset += 1; } dissector(pinfo, tree, tvb, offset, is_request, usb_trans_info, usb_conv_info); return TRUE; } void proto_register_usb_hid(void) { static hf_register_info hf[] = { { &hf_usb_hid_item_bSize, { "bSize", "usbhid.item.bSize", FT_UINT8, BASE_DEC, VALS(usb_hid_item_bSize_vals), USBHID_SIZE_MASK, NULL, HFILL }}, { &hf_usb_hid_item_bType, { "bType", "usbhid.item.bType", FT_UINT8, BASE_DEC, VALS(usb_hid_item_bType_vals), USBHID_TYPE_MASK, NULL, HFILL }}, { &hf_usb_hid_mainitem_bTag, { "bTag", "usbhid.item.bTag", FT_UINT8, BASE_HEX, VALS(usb_hid_mainitem_bTag_vals), USBHID_TAG_MASK, NULL, HFILL }}, { &hf_usb_hid_globalitem_bTag, { "bTag", "usbhid.item.bTag", FT_UINT8, BASE_HEX, VALS(usb_hid_globalitem_bTag_vals), USBHID_TAG_MASK, NULL, HFILL }}, { &hf_usb_hid_localitem_bTag, { "bTag", "usbhid.item.bTag", FT_UINT8, BASE_HEX, VALS(usb_hid_localitem_bTag_vals), USBHID_TAG_MASK, NULL, HFILL }}, { &hf_usb_hid_longitem_bTag, { "bTag", "usbhid.item.bTag", FT_UINT8, BASE_HEX, VALS(usb_hid_longitem_bTag_vals), USBHID_TAG_MASK, NULL, HFILL }}, { &hf_usb_hid_item_bDataSize, { "bDataSize", "usbhid.item.bDataSize", FT_UINT8, BASE_DEC, NULL, 0, NULL, HFILL }}, { &hf_usb_hid_item_bLongItemTag, { "bTag", "usbhid.item.bLongItemTag", FT_UINT8, BASE_HEX, NULL, 0, NULL, HFILL }}, /* Main-report item data */ { &hf_usb_hid_mainitem_bit0, { "Data/constant", "usbhid.item.main.readonly", FT_BOOLEAN, 9, TFS(&tfs_mainitem_bit0), 1<<0, NULL, HFILL }}, { &hf_usb_hid_mainitem_bit1, { "Data type", "usbhid.item.main.variable", FT_BOOLEAN, 9, TFS(&tfs_mainitem_bit1), 1<<1, NULL, HFILL }}, { &hf_usb_hid_mainitem_bit2, { "Coordinates", "usbhid.item.main.relative", FT_BOOLEAN, 9, TFS(&tfs_mainitem_bit2), 1<<2, NULL, HFILL }}, { &hf_usb_hid_mainitem_bit3, { "Min/max wraparound", "usbhid.item.main.wrap", FT_BOOLEAN, 9, TFS(&tfs_mainitem_bit3), 1<<3, NULL, HFILL }}, { &hf_usb_hid_mainitem_bit4, { "Physical relationship to data", "usbhid.item.main.nonlinear", FT_BOOLEAN, 9, TFS(&tfs_mainitem_bit4), 1<<4, NULL, HFILL }}, { &hf_usb_hid_mainitem_bit5, { "Preferred state", "usbhid.item.main.no_preferred_state", FT_BOOLEAN, 9, TFS(&tfs_mainitem_bit5), 1<<5, NULL, HFILL }}, { &hf_usb_hid_mainitem_bit6, { "Has null position", "usbhid.item.main.nullstate", FT_BOOLEAN, 9, TFS(&tfs_mainitem_bit6), 1<<6, NULL, HFILL }}, { &hf_usb_hid_mainitem_bit7, { "(Non)-volatile", "usbhid.item.main.volatile", FT_BOOLEAN, 9, TFS(&tfs_mainitem_bit7), 1<<7, NULL, HFILL }}, { &hf_usb_hid_mainitem_bit7_input, { "[Reserved]", "usbhid.item.main.volatile", FT_BOOLEAN, 9, NULL, 1<<7, NULL, HFILL }}, { &hf_usb_hid_mainitem_bit8, { "Bits or bytes", "usbhid.item.main.buffered_bytes", FT_BOOLEAN, 9, TFS(&tfs_mainitem_bit8), 1<<8, NULL, HFILL }}, { &hf_usb_hid_mainitem_colltype, { "Collection type", "usbhid.item.main.colltype", FT_UINT8, BASE_RANGE_STRING|BASE_HEX, RVALS(usb_hid_mainitem_colltype_vals), 0, NULL, HFILL }}, /* Global-report item data */ { &hf_usb_hid_globalitem_usage, { "Usage page", "usbhid.item.global.usage", FT_UINT8, BASE_RANGE_STRING|BASE_HEX, RVALS(usb_hid_item_usage_vals), 0, NULL, HFILL }}, { &hf_usb_hid_globalitem_log_min, { "Logical minimum", "usbhid.item.global.log_min", FT_UINT8, BASE_DEC, NULL, 0, NULL, HFILL }}, { &hf_usb_hid_globalitem_log_max, { "Logical maximum", "usbhid.item.global.log_max", FT_UINT8, BASE_DEC, NULL, 0, NULL, HFILL }}, { &hf_usb_hid_globalitem_phy_min, { "Physical minimum", "usbhid.item.global.phy_min", FT_UINT8, BASE_DEC, NULL, 0, NULL, HFILL }}, { &hf_usb_hid_globalitem_phy_max, { "Physical maximum", "usbhid.item.global.phy_max", FT_UINT8, BASE_DEC, NULL, 0, NULL, HFILL }}, { &hf_usb_hid_globalitem_unit_exp, { "Unit exponent", "usbhid.item.global.unit_exp", FT_UINT8, BASE_DEC, NULL, 0, NULL, HFILL }}, { &hf_usb_hid_globalitem_unit_sys, { "System", "usbhid.item.global.unit.system", FT_UINT32, BASE_HEX, VALS(usb_hid_globalitem_unit_exp_vals), 0x0000000F, NULL, HFILL }}, { &hf_usb_hid_globalitem_unit_len, { "Length", "usbhid.item.global.unit.length", FT_UINT32, BASE_HEX, VALS(usb_hid_globalitem_unit_exp_vals), 0x000000F0, NULL, HFILL }}, { &hf_usb_hid_globalitem_unit_mass, { "Mass", "usbhid.item.global.unit.mass", FT_UINT32, BASE_HEX, VALS(usb_hid_globalitem_unit_exp_vals), 0x00000F00, NULL, HFILL }}, { &hf_usb_hid_globalitem_unit_time, { "Time", "usbhid.item.global.unit.time", FT_UINT32, BASE_HEX, VALS(usb_hid_globalitem_unit_exp_vals), 0x0000F000, NULL, HFILL }}, { &hf_usb_hid_globalitem_unit_temp, { "Temperature", "usbhid.item.global.unit.temperature", FT_UINT32, BASE_HEX, VALS(usb_hid_globalitem_unit_exp_vals), 0x000F0000, NULL, HFILL }}, { &hf_usb_hid_globalitem_unit_current, { "Current", "usbhid.item.global.unit.current", FT_UINT32, BASE_HEX, VALS(usb_hid_globalitem_unit_exp_vals), 0x00F00000, NULL, HFILL }}, { &hf_usb_hid_globalitem_unit_brightness, { "Luminous intensity", "usbhid.item.global.unit.brightness", FT_UINT32, BASE_HEX, VALS(usb_hid_globalitem_unit_exp_vals), 0x0F000000, NULL, HFILL }}, { &hf_usb_hid_globalitem_report_size, { "Report size", "usbhid.item.global.report_size", FT_UINT8, BASE_DEC, NULL, 0, NULL, HFILL }}, { &hf_usb_hid_globalitem_report_id, { "Report ID", "usbhid.item.global.report_id", FT_UINT8, BASE_HEX, NULL, 0, NULL, HFILL }}, { &hf_usb_hid_globalitem_report_count, { "Report count", "usbhid.item.global.report_count", FT_UINT8, BASE_DEC, NULL, 0, NULL, HFILL }}, { &hf_usb_hid_globalitem_push, { "Push", "usbhid.item.global.push", FT_UINT8, BASE_HEX, NULL, 0, NULL, HFILL }}, { &hf_usb_hid_globalitem_pop, { "Pop", "usbhid.item.global.pop", FT_UINT8, BASE_HEX, NULL, 0, NULL, HFILL }}, /* Local-report item data */ { &hf_usb_hid_localitem_usage, { "Usage", "usbhid.item.local.usage", FT_UINT8, BASE_RANGE_STRING|BASE_HEX, RVALS(usb_hid_item_usage_vals), 0, NULL, HFILL }}, { &hf_usb_hid_localitem_usage_min, { "Usage minimum", "usbhid.item.local.usage_min", FT_UINT8, BASE_HEX, NULL, 0, NULL, HFILL }}, { &hf_usb_hid_localitem_usage_max, { "Usage maximum", "usbhid.item.local.usage_max", FT_UINT8, BASE_HEX, NULL, 0, NULL, HFILL }}, { &hf_usb_hid_localitem_desig_index, { "Designator index", "usbhid.item.local.desig_index", FT_UINT8, BASE_HEX, NULL, 0, NULL, HFILL }}, { &hf_usb_hid_localitem_desig_min, { "Designator minimum", "usbhid.item.local.desig_min", FT_UINT8, BASE_HEX, NULL, 0, NULL, HFILL }}, { &hf_usb_hid_localitem_desig_max, { "Designator maximum", "usbhid.item.local.desig_max", FT_UINT8, BASE_HEX, NULL, 0, NULL, HFILL }}, { &hf_usb_hid_localitem_string_index, { "String index", "usbhid.item.local.string_index", FT_UINT8, BASE_HEX, NULL, 0, NULL, HFILL }}, { &hf_usb_hid_localitem_string_min, { "String minimum", "usbhid.item.local.string_min", FT_UINT8, BASE_HEX, NULL, 0, NULL, HFILL }}, { &hf_usb_hid_localitem_string_max, { "String maximum", "usbhid.item.local.string_max", FT_UINT8, BASE_HEX, NULL, 0, NULL, HFILL }}, { &hf_usb_hid_localitem_delimiter, { "Delimiter", "usbhid.item.local.delimiter", FT_UINT8, BASE_HEX, NULL, 0, NULL, HFILL }}, { &hf_usb_hid_item_unk_data, { "Item data", "usbhid.item.data", FT_BYTES, BASE_NONE, NULL, 0, NULL, HFILL }}, /* USB HID specific requests */ { &hf_usb_hid_request, { "bRequest", "usbhid.setup.bRequest", FT_UINT8, BASE_HEX, VALS(setup_request_names_vals), 0x0, NULL, HFILL }}, { &hf_usb_hid_value, { "wValue", "usbhid.setup.wValue", FT_UINT16, BASE_HEX, NULL, 0x0, NULL, HFILL }}, { &hf_usb_hid_index, { "wIndex", "usbhid.setup.wIndex", FT_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL }}, { &hf_usb_hid_length, { "wLength", "usbhid.setup.wLength", FT_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL }}, { &hf_usb_hid_report_type, { "ReportType", "usbhid.setup.ReportType", FT_UINT8, BASE_DEC, VALS(usb_hid_report_type_vals), 0x0, NULL, HFILL }}, { &hf_usb_hid_report_id, { "ReportID", "usbhid.setup.ReportID", FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL }}, { &hf_usb_hid_duration, { "Duration", "usbhid.setup.Duration", FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL }}, { &hf_usb_hid_zero, { "(zero)", "usbhid.setup.zero", FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL }} }; static gint *usb_hid_subtrees[] = { &ett_usb_hid_report, &ett_usb_hid_item_header, &ett_usb_hid_wValue }; proto_usb_hid = proto_register_protocol("USB HID", "USBHID", "usbhid"); proto_register_field_array(proto_usb_hid, hf, array_length(hf)); proto_register_subtree_array(usb_hid_subtrees, array_length(usb_hid_subtrees)); } void proto_reg_handoff_usb_hid(void) { dissector_handle_t usb_hid_control_handle; usb_hid_control_handle = new_create_dissector_handle(dissect_usb_hid_control, proto_usb_hid); dissector_add_uint("usb.control", IF_CLASS_HID, usb_hid_control_handle); }