4 * By Adam Nielsen <a.nielsen@shikadi.net> 2009
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License
8 * as published by the Free Software Foundation; either version 2
9 * of the License, or (at your option) any later version.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
25 #include <epan/packet.h>
27 #include "packet-usb.h"
28 #include "packet-usb-hid.h"
30 void proto_register_usb_hid(void);
31 void proto_reg_handoff_usb_hid(void);
33 /* protocols and header fields */
34 static int proto_usb_hid = -1;
35 static int hf_usb_hid_item_bSize = -1;
36 static int hf_usb_hid_item_bType = -1;
37 static int hf_usb_hid_mainitem_bTag = -1;
38 static int hf_usb_hid_globalitem_bTag = -1;
39 static int hf_usb_hid_localitem_bTag = -1;
40 static int hf_usb_hid_longitem_bTag = -1;
41 static int hf_usb_hid_item_bDataSize = -1;
42 static int hf_usb_hid_item_bLongItemTag = -1;
43 static int hf_usb_hid_item_unk_data = -1;
45 static int hf_usb_hid_mainitem_bit0 = -1;
46 static int hf_usb_hid_mainitem_bit1 = -1;
47 static int hf_usb_hid_mainitem_bit2 = -1;
48 static int hf_usb_hid_mainitem_bit3 = -1;
49 static int hf_usb_hid_mainitem_bit4 = -1;
50 static int hf_usb_hid_mainitem_bit5 = -1;
51 static int hf_usb_hid_mainitem_bit6 = -1;
52 static int hf_usb_hid_mainitem_bit7 = -1;
53 static int hf_usb_hid_mainitem_bit7_input = -1;
54 static int hf_usb_hid_mainitem_bit8 = -1;
55 static int hf_usb_hid_mainitem_colltype = -1;
57 static int hf_usb_hid_globalitem_usage = -1;
58 static int hf_usb_hid_globalitem_log_min = -1;
59 static int hf_usb_hid_globalitem_log_max = -1;
60 static int hf_usb_hid_globalitem_phy_min = -1;
61 static int hf_usb_hid_globalitem_phy_max = -1;
62 static int hf_usb_hid_globalitem_unit_exp = -1;
63 static int hf_usb_hid_globalitem_unit_sys = -1;
64 static int hf_usb_hid_globalitem_unit_len = -1;
65 static int hf_usb_hid_globalitem_unit_mass = -1;
66 static int hf_usb_hid_globalitem_unit_time = -1;
67 static int hf_usb_hid_globalitem_unit_temp = -1;
68 static int hf_usb_hid_globalitem_unit_current = -1;
69 static int hf_usb_hid_globalitem_unit_brightness = -1;
70 static int hf_usb_hid_globalitem_report_size = -1;
71 static int hf_usb_hid_globalitem_report_id = -1;
72 static int hf_usb_hid_globalitem_report_count = -1;
73 static int hf_usb_hid_globalitem_push = -1;
74 static int hf_usb_hid_globalitem_pop = -1;
76 static int hf_usb_hid_localitem_usage = -1;
77 static int hf_usb_hid_localitem_usage_min = -1;
78 /* static int hf_usb_hid_localitem_usage_max = -1; */
79 static int hf_usb_hid_localitem_desig_index = -1;
80 static int hf_usb_hid_localitem_desig_min = -1;
81 static int hf_usb_hid_localitem_desig_max = -1;
82 static int hf_usb_hid_localitem_string_index = -1;
83 static int hf_usb_hid_localitem_string_min = -1;
84 static int hf_usb_hid_localitem_string_max = -1;
85 static int hf_usb_hid_localitem_delimiter = -1;
87 static gint ett_usb_hid_report = -1;
88 static gint ett_usb_hid_item_header = -1;
89 static gint ett_usb_hid_wValue = -1;
90 static gint ett_usb_hid_descriptor = -1;
92 static int hf_usb_hid_request = -1;
93 static int hf_usb_hid_value = -1;
94 static int hf_usb_hid_index = -1;
95 static int hf_usb_hid_length = -1;
96 static int hf_usb_hid_report_type = -1;
97 static int hf_usb_hid_report_id = -1;
98 static int hf_usb_hid_duration = -1;
99 static int hf_usb_hid_zero = -1;
101 static int hf_usb_hid_bcdHID = -1;
102 static int hf_usb_hid_bCountryCode = -1;
103 static int hf_usb_hid_bNumDescriptors = -1;
104 static int hf_usb_hid_bDescriptorType = -1;
105 static int hf_usb_hid_wDescriptorLength = -1;
107 static const true_false_string tfs_mainitem_bit0 = {"Data", "Constant"};
108 static const true_false_string tfs_mainitem_bit1 = {"Array", "Variable"};
109 static const true_false_string tfs_mainitem_bit2 = {"Absolute", "Relative"};
110 static const true_false_string tfs_mainitem_bit3 = {"No wrap", "Wrap"};
111 static const true_false_string tfs_mainitem_bit4 = {"Linear", "Nonlinear"};
112 static const true_false_string tfs_mainitem_bit5 = {"Preferred state", "No preferred state"};
113 static const true_false_string tfs_mainitem_bit6 = {"No null position", "Null state"};
114 static const true_false_string tfs_mainitem_bit7 = {"Non-volatile", "Volatile"};
115 static const true_false_string tfs_mainitem_bit8 = {"Bit field", "Buffered bytes"};
118 struct usb_hid_global_state {
119 unsigned int usage_page;
123 /* HID class specific descriptor types */
124 #define USB_DT_HID 33
125 static const value_string hid_descriptor_type_vals[] = {
129 static value_string_ext hid_descriptor_type_vals_ext =
130 VALUE_STRING_EXT_INIT(hid_descriptor_type_vals);
133 #define USBHID_SIZE_MASK 0x03
134 #define USBHID_TYPE_MASK 0x0C
135 #define USBHID_TAG_MASK 0xF0
137 static const value_string usb_hid_item_bSize_vals[] = {
145 #define USBHID_ITEMTYPE_MAIN 0
146 #define USBHID_ITEMTYPE_GLOBAL 1
147 #define USBHID_ITEMTYPE_LOCAL 2
148 #define USBHID_ITEMTYPE_LONG 3
149 static const value_string usb_hid_item_bType_vals[] = {
150 {USBHID_ITEMTYPE_MAIN, "Main"},
151 {USBHID_ITEMTYPE_GLOBAL, "Global"},
152 {USBHID_ITEMTYPE_LOCAL, "Local"},
153 {USBHID_ITEMTYPE_LONG, "Long item"},
157 #define USBHID_MAINITEM_TAG_INPUT 8
158 #define USBHID_MAINITEM_TAG_OUTPUT 9
159 #define USBHID_MAINITEM_TAG_FEATURE 11
160 #define USBHID_MAINITEM_TAG_COLLECTION 10
161 #define USBHID_MAINITEM_TAG_ENDCOLLECTION 12
162 static const value_string usb_hid_mainitem_bTag_vals[] = {
163 {USBHID_MAINITEM_TAG_INPUT, "Input"},
164 {USBHID_MAINITEM_TAG_OUTPUT, "Output"},
165 {USBHID_MAINITEM_TAG_FEATURE, "Feature"},
166 {USBHID_MAINITEM_TAG_COLLECTION, "Collection"},
167 {USBHID_MAINITEM_TAG_ENDCOLLECTION, "End collection"},
170 #define USBHID_GLOBALITEM_TAG_USAGE_PAGE 0
171 #define USBHID_GLOBALITEM_TAG_LOG_MIN 1
172 #define USBHID_GLOBALITEM_TAG_LOG_MAX 2
173 #define USBHID_GLOBALITEM_TAG_PHY_MIN 3
174 #define USBHID_GLOBALITEM_TAG_PHY_MAX 4
175 #define USBHID_GLOBALITEM_TAG_UNIT_EXP 5
176 #define USBHID_GLOBALITEM_TAG_UNIT 6
177 #define USBHID_GLOBALITEM_TAG_REPORT_SIZE 7
178 #define USBHID_GLOBALITEM_TAG_REPORT_ID 8
179 #define USBHID_GLOBALITEM_TAG_REPORT_COUNT 9
180 #define USBHID_GLOBALITEM_TAG_PUSH 10
181 #define USBHID_GLOBALITEM_TAG_POP 11
182 static const value_string usb_hid_globalitem_bTag_vals[] = {
183 {USBHID_GLOBALITEM_TAG_USAGE_PAGE, "Usage"},
184 {USBHID_GLOBALITEM_TAG_LOG_MIN, "Logical minimum"},
185 {USBHID_GLOBALITEM_TAG_LOG_MAX, "Logical maximum"},
186 {USBHID_GLOBALITEM_TAG_PHY_MIN, "Physical minimum"},
187 {USBHID_GLOBALITEM_TAG_PHY_MAX, "Physical maximum"},
188 {USBHID_GLOBALITEM_TAG_UNIT_EXP, "Unit exponent"},
189 {USBHID_GLOBALITEM_TAG_UNIT, "Units"},
190 {USBHID_GLOBALITEM_TAG_REPORT_SIZE, "Report size"},
191 {USBHID_GLOBALITEM_TAG_REPORT_ID, "Report ID"},
192 {USBHID_GLOBALITEM_TAG_REPORT_COUNT, "Report count"},
193 {USBHID_GLOBALITEM_TAG_PUSH, "Push"},
194 {USBHID_GLOBALITEM_TAG_POP, "Pop"},
201 #define USBHID_LOCALITEM_TAG_USAGE_PAGE 0
202 #define USBHID_LOCALITEM_TAG_USAGE_MIN 1
203 #define USBHID_LOCALITEM_TAG_USAGE_MAX 2
204 #define USBHID_LOCALITEM_TAG_DESIG_INDEX 3
205 #define USBHID_LOCALITEM_TAG_DESIG_MIN 4
206 #define USBHID_LOCALITEM_TAG_DESIG_MAX 5
208 #define USBHID_LOCALITEM_TAG_STRING_INDEX 7
209 #define USBHID_LOCALITEM_TAG_STRING_MIN 8
210 #define USBHID_LOCALITEM_TAG_STRING_MAX 9
211 #define USBHID_LOCALITEM_TAG_DELIMITER 10 /* Also listed as reserved in spec! */
212 static const value_string usb_hid_localitem_bTag_vals[] = {
213 {USBHID_LOCALITEM_TAG_USAGE_PAGE, "Usage"},
214 {USBHID_LOCALITEM_TAG_USAGE_MIN, "Usage minimum"},
215 {USBHID_LOCALITEM_TAG_USAGE_MAX, "Usage maximum"},
216 {USBHID_LOCALITEM_TAG_DESIG_INDEX, "Designator index"},
217 {USBHID_LOCALITEM_TAG_DESIG_MIN, "Designator minimum"},
218 {USBHID_LOCALITEM_TAG_DESIG_MAX, "Designator maximum"},
219 {USBHID_LOCALITEM_TAG_STRING_INDEX, "String index"},
220 {USBHID_LOCALITEM_TAG_STRING_MIN, "String minimum"},
221 {USBHID_LOCALITEM_TAG_STRING_MAX, "String maximum"},
222 {USBHID_LOCALITEM_TAG_DELIMITER, "Delimiter"},
230 static const value_string usb_hid_longitem_bTag_vals[] = {
235 static const range_string usb_hid_mainitem_colltype_vals[] = {
236 {0x00, 0x00, "Physical"},
237 {0x01, 0x01, "Application"},
238 {0x02, 0x02, "Logical"},
239 {0x03, 0x03, "Report"},
240 {0x04, 0x04, "Named array"},
241 {0x05, 0x05, "Usage switch"},
242 {0x06, 0x06, "Usage modifier"},
243 {0x07, 0x7F, "[Reserved]"},
244 {0x80, 0xFF, "[Vendor-defined]"},
248 static const value_string usb_hid_globalitem_unit_exp_vals[] = {
267 static const range_string usb_hid_item_usage_vals[] = {
268 {0x00, 0x00, "Undefined"},
269 {0x01, 0x01, "Generic desktop controls"},
270 {0x02, 0x02, "Simulation controls"},
271 {0x03, 0x03, "VR controls"},
272 {0x04, 0x04, "Sport controls"},
273 {0x05, 0x05, "Game controls"},
274 {0x06, 0x06, "Generic device controls"},
275 {0x07, 0x07, "Keyboard/keypad"},
276 {0x08, 0x08, "LEDs"},
277 {0x09, 0x09, "Button"},
278 {0x0A, 0x0A, "Ordinal"},
279 {0x0B, 0x0B, "Telephony"},
280 {0x0C, 0x0C, "Consumer"},
281 {0x0D, 0x0D, "Digitizer"},
282 {0x0E, 0x0E, "[Reserved]"},
283 {0x0F, 0x0F, "Physical Interface Device (PID) page"},
284 {0x10, 0x10, "Unicode"},
285 {0x11, 0x13, "[Reserved]"},
286 {0x14, 0x14, "Alphanumeric display"},
287 {0x15, 0x3F, "[Reserved]"},
288 {0x40, 0x40, "Medical instruments"},
289 {0x41, 0x7F, "[Reserved]"},
290 {0x80, 0x83, "Monitor page"},
291 {0x84, 0x87, "Power page"},
292 {0x88, 0x8B, "[Reserved]"},
293 {0x8C, 0x8C, "Bar code scanner page"},
294 {0x8D, 0x8D, "Scale page"},
295 {0x8E, 0x8E, "Magnetic Stripe Reading (MSR) devices"},
296 {0x8F, 0x8F, "[Reserved Point of Sale page]"},
297 {0x90, 0x90, "Camera control page"},
298 {0x91, 0x91, "Arcade page"},
299 {0x92, 0xFEFF, "[Reserved]"},
300 {0xFF00, 0xFFFF, "[Vendor-defined]"},
304 /* Dissector for the data in a HID main report. */
306 dissect_usb_hid_report_mainitem_data(packet_info *pinfo _U_, proto_tree *tree, tvbuff_t *tvb, int offset, unsigned int bSize, unsigned int bTag)
309 case USBHID_MAINITEM_TAG_INPUT:
310 case USBHID_MAINITEM_TAG_OUTPUT:
311 case USBHID_MAINITEM_TAG_FEATURE:
312 proto_tree_add_item(tree, hf_usb_hid_mainitem_bit0, tvb, offset, bSize, ENC_LITTLE_ENDIAN);
313 proto_tree_add_item(tree, hf_usb_hid_mainitem_bit1, tvb, offset, bSize, ENC_LITTLE_ENDIAN);
314 proto_tree_add_item(tree, hf_usb_hid_mainitem_bit2, tvb, offset, bSize, ENC_LITTLE_ENDIAN);
315 proto_tree_add_item(tree, hf_usb_hid_mainitem_bit3, tvb, offset, bSize, ENC_LITTLE_ENDIAN);
316 proto_tree_add_item(tree, hf_usb_hid_mainitem_bit4, tvb, offset, bSize, ENC_LITTLE_ENDIAN);
317 proto_tree_add_item(tree, hf_usb_hid_mainitem_bit5, tvb, offset, bSize, ENC_LITTLE_ENDIAN);
318 proto_tree_add_item(tree, hf_usb_hid_mainitem_bit6, tvb, offset, bSize, ENC_LITTLE_ENDIAN);
319 if (bTag == USBHID_MAINITEM_TAG_INPUT) {
320 proto_tree_add_item(tree, hf_usb_hid_mainitem_bit7_input, tvb, offset, bSize, ENC_LITTLE_ENDIAN);
322 proto_tree_add_item(tree, hf_usb_hid_mainitem_bit7, tvb, offset, bSize, ENC_LITTLE_ENDIAN);
325 proto_tree_add_item(tree, hf_usb_hid_mainitem_bit8, tvb, offset, bSize, ENC_LITTLE_ENDIAN);
327 proto_tree_add_text(tree, tvb, offset, 0, "Bits or bytes: Buffered bytes (default, no second byte present)");
330 case USBHID_MAINITEM_TAG_COLLECTION:
331 proto_tree_add_item(tree, hf_usb_hid_mainitem_colltype, tvb, offset, 1, ENC_LITTLE_ENDIAN);
333 case USBHID_MAINITEM_TAG_ENDCOLLECTION:
337 proto_tree_add_item(tree, hf_usb_hid_item_unk_data, tvb, offset, bSize, ENC_NA);
344 /* Dissector for the data in a HID main report. */
346 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)
349 case USBHID_GLOBALITEM_TAG_USAGE_PAGE:
351 case 1: global->usage_page = tvb_get_guint8(tvb, offset); break;
352 case 2: global->usage_page = tvb_get_letohs(tvb, offset); break;
353 case 3: global->usage_page = tvb_get_letoh24(tvb, offset); break;
354 case 4: global->usage_page = tvb_get_letohl(tvb, offset); break;
355 default: global->usage_page = 0; break;
357 proto_tree_add_item(tree, hf_usb_hid_globalitem_usage, tvb, offset, bSize, ENC_LITTLE_ENDIAN);
359 case USBHID_GLOBALITEM_TAG_LOG_MIN:
360 proto_tree_add_item(tree, hf_usb_hid_globalitem_log_min, tvb, offset, bSize, ENC_LITTLE_ENDIAN);
362 case USBHID_GLOBALITEM_TAG_LOG_MAX:
363 proto_tree_add_item(tree, hf_usb_hid_globalitem_log_max, tvb, offset, bSize, ENC_LITTLE_ENDIAN);
365 case USBHID_GLOBALITEM_TAG_PHY_MIN:
366 proto_tree_add_item(tree, hf_usb_hid_globalitem_phy_min, tvb, offset, bSize, ENC_LITTLE_ENDIAN);
368 case USBHID_GLOBALITEM_TAG_PHY_MAX:
369 proto_tree_add_item(tree, hf_usb_hid_globalitem_phy_max, tvb, offset, bSize, ENC_LITTLE_ENDIAN);
371 case USBHID_GLOBALITEM_TAG_UNIT_EXP:
372 proto_tree_add_item(tree, hf_usb_hid_globalitem_unit_exp, tvb, offset, bSize, ENC_LITTLE_ENDIAN);
374 case USBHID_GLOBALITEM_TAG_UNIT:
375 proto_tree_add_item(tree, hf_usb_hid_globalitem_unit_sys, tvb, offset, bSize, ENC_LITTLE_ENDIAN);
376 proto_tree_add_item(tree, hf_usb_hid_globalitem_unit_len, tvb, offset, bSize, ENC_LITTLE_ENDIAN);
377 proto_tree_add_item(tree, hf_usb_hid_globalitem_unit_mass, tvb, offset, bSize, ENC_LITTLE_ENDIAN);
378 proto_tree_add_item(tree, hf_usb_hid_globalitem_unit_time, tvb, offset, bSize, ENC_LITTLE_ENDIAN);
379 proto_tree_add_item(tree, hf_usb_hid_globalitem_unit_temp, tvb, offset, bSize, ENC_LITTLE_ENDIAN);
380 proto_tree_add_item(tree, hf_usb_hid_globalitem_unit_current, tvb, offset, bSize, ENC_LITTLE_ENDIAN);
381 proto_tree_add_item(tree, hf_usb_hid_globalitem_unit_brightness, tvb, offset, bSize, ENC_LITTLE_ENDIAN);
383 case USBHID_GLOBALITEM_TAG_REPORT_SIZE:
384 proto_tree_add_item(tree, hf_usb_hid_globalitem_report_size, tvb, offset, bSize, ENC_LITTLE_ENDIAN);
386 case USBHID_GLOBALITEM_TAG_REPORT_ID:
387 proto_tree_add_item(tree, hf_usb_hid_globalitem_report_id, tvb, offset, bSize, ENC_LITTLE_ENDIAN);
389 case USBHID_GLOBALITEM_TAG_REPORT_COUNT:
390 proto_tree_add_item(tree, hf_usb_hid_globalitem_report_count, tvb, offset, bSize, ENC_LITTLE_ENDIAN);
392 case USBHID_GLOBALITEM_TAG_PUSH:
393 proto_tree_add_item(tree, hf_usb_hid_globalitem_push, tvb, offset, bSize, ENC_LITTLE_ENDIAN);
395 case USBHID_GLOBALITEM_TAG_POP:
396 proto_tree_add_item(tree, hf_usb_hid_globalitem_pop, tvb, offset, bSize, ENC_LITTLE_ENDIAN);
399 proto_tree_add_item(tree, hf_usb_hid_item_unk_data, tvb, offset, bSize, ENC_NA);
406 /* Dissector for the data in a HID main report. */
408 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)
410 unsigned int usage_page = 0xffffffff; /* in case bSize == 0 */
413 case USBHID_LOCALITEM_TAG_USAGE_PAGE:
416 proto_tree_add_item(tree, hf_usb_hid_localitem_usage, tvb, offset, bSize, ENC_LITTLE_ENDIAN);
418 /* Only lower few bits given, need to combine with last global ID */
420 usage_page = (global->usage_page & 0xFFFFFF00) | tvb_get_guint8(tvb, offset);
422 usage_page = (global->usage_page & 0xFFFF0000) | tvb_get_ntohs(tvb, offset);
423 proto_tree_add_text(tree, tvb, offset, bSize, "Usage: %s (0x%08x)",
424 rval_to_str(usage_page, usb_hid_item_usage_vals, "[Unknown page!]"),
428 case USBHID_LOCALITEM_TAG_USAGE_MIN:
429 proto_tree_add_item(tree, hf_usb_hid_localitem_usage_min, tvb, offset, bSize, ENC_LITTLE_ENDIAN);
431 case USBHID_LOCALITEM_TAG_USAGE_MAX:
432 proto_tree_add_item(tree, hf_usb_hid_localitem_usage, tvb, offset, bSize, ENC_LITTLE_ENDIAN);
434 case USBHID_LOCALITEM_TAG_DESIG_INDEX:
435 proto_tree_add_item(tree, hf_usb_hid_localitem_desig_index, tvb, offset, bSize, ENC_LITTLE_ENDIAN);
437 case USBHID_LOCALITEM_TAG_DESIG_MIN:
438 proto_tree_add_item(tree, hf_usb_hid_localitem_desig_min, tvb, offset, bSize, ENC_LITTLE_ENDIAN);
440 case USBHID_LOCALITEM_TAG_DESIG_MAX:
441 proto_tree_add_item(tree, hf_usb_hid_localitem_desig_max, tvb, offset, bSize, ENC_LITTLE_ENDIAN);
443 case USBHID_LOCALITEM_TAG_STRING_INDEX:
444 proto_tree_add_item(tree, hf_usb_hid_localitem_string_index, tvb, offset, bSize, ENC_LITTLE_ENDIAN);
446 case USBHID_LOCALITEM_TAG_STRING_MIN:
447 proto_tree_add_item(tree, hf_usb_hid_localitem_string_min, tvb, offset, bSize, ENC_LITTLE_ENDIAN);
449 case USBHID_LOCALITEM_TAG_STRING_MAX:
450 proto_tree_add_item(tree, hf_usb_hid_localitem_string_max, tvb, offset, bSize, ENC_LITTLE_ENDIAN);
452 case USBHID_LOCALITEM_TAG_DELIMITER:
453 proto_tree_add_item(tree, hf_usb_hid_localitem_delimiter, tvb, offset, bSize, ENC_LITTLE_ENDIAN);
456 proto_tree_add_item(tree, hf_usb_hid_item_unk_data, tvb, offset, bSize, ENC_NA);
463 /* Dissector for individual HID report items. Recursive. */
465 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)
467 proto_item *subitem=NULL;
468 proto_tree *tree=NULL, *subtree=NULL;
471 unsigned int bSize, bType, bTag;
472 const value_string *usb_hid_cur_bTag_vals;
473 int hf_usb_hid_curitem_bTag;
474 struct usb_hid_global_state cur_global;
475 memcpy(&cur_global, global, sizeof(struct usb_hid_global_state));
477 while (tvb_reported_length_remaining(tvb, offset) > 0)
481 tmp = tvb_get_guint8(tvb, offset);
482 bSize = tmp & USBHID_SIZE_MASK;
483 if (bSize == 3) bSize++; /* 3 == four bytes */
484 bType = (tmp & USBHID_TYPE_MASK) >> 2;
485 bTag = (tmp & USBHID_TAG_MASK) >> 4;
488 case USBHID_ITEMTYPE_MAIN:
489 hf_usb_hid_curitem_bTag = hf_usb_hid_mainitem_bTag;
490 usb_hid_cur_bTag_vals = usb_hid_mainitem_bTag_vals;
492 case USBHID_ITEMTYPE_GLOBAL:
493 hf_usb_hid_curitem_bTag = hf_usb_hid_globalitem_bTag;
494 usb_hid_cur_bTag_vals = usb_hid_globalitem_bTag_vals;
496 case USBHID_ITEMTYPE_LOCAL:
497 hf_usb_hid_curitem_bTag = hf_usb_hid_localitem_bTag;
498 usb_hid_cur_bTag_vals = usb_hid_localitem_bTag_vals;
500 default: /* Only USBHID_ITEMTYPE_LONG, but keep compiler happy */
501 hf_usb_hid_curitem_bTag = hf_usb_hid_longitem_bTag;
502 usb_hid_cur_bTag_vals = usb_hid_longitem_bTag_vals;
506 subtree = proto_tree_add_subtree_format(parent_tree, tvb, offset, bSize + 1,
507 ett_usb_hid_item_header, NULL, "%s item (%s)",
508 val_to_str(bType, usb_hid_item_bType_vals, "Unknown/%u"),
509 val_to_str(bTag, usb_hid_cur_bTag_vals, "Unknown/%u tag")
512 tree = proto_tree_add_subtree(subtree, tvb, offset, 1, ett_usb_hid_item_header, NULL, "Header");
513 proto_tree_add_item(tree, hf_usb_hid_item_bSize, tvb, offset, 1, ENC_LITTLE_ENDIAN);
514 proto_tree_add_item(tree, hf_usb_hid_item_bType, tvb, offset, 1, ENC_LITTLE_ENDIAN);
515 proto_tree_add_item(tree, hf_usb_hid_curitem_bTag, tvb, offset, 1, ENC_LITTLE_ENDIAN);
517 if ((bType == 3) && (bTag == 16)) {
519 bSize = tvb_get_guint8(tvb, offset);
520 proto_tree_add_item(subtree, hf_usb_hid_item_bDataSize, tvb, offset, 1, ENC_LITTLE_ENDIAN);
522 proto_tree_add_item(subtree, hf_usb_hid_item_bLongItemTag, tvb, offset, 1, ENC_LITTLE_ENDIAN);
524 proto_tree_add_item(subtree, hf_usb_hid_item_unk_data, tvb, offset, bSize, ENC_NA);
529 case USBHID_ITEMTYPE_MAIN:
530 offset = dissect_usb_hid_report_mainitem_data(pinfo, subtree, tvb, offset, bSize, bTag);
532 case USBHID_ITEMTYPE_GLOBAL:
533 offset = dissect_usb_hid_report_globalitem_data(pinfo, subtree, tvb, offset, bSize, bTag, &cur_global);
535 case USBHID_ITEMTYPE_LOCAL:
536 offset = dissect_usb_hid_report_localitem_data(pinfo, subtree, tvb, offset, bSize, bTag, &cur_global);
538 default: /* Only USBHID_ITEMTYPE_LONG, but keep compiler happy */
539 proto_tree_add_item(subtree, hf_usb_hid_item_unk_data, tvb, offset, bSize, ENC_NA);
545 if (bType == USBHID_ITEMTYPE_MAIN) {
546 if (bTag == USBHID_MAINITEM_TAG_COLLECTION) {
547 /* Begin collection, nest following elements under us */
548 offset = dissect_usb_hid_report_item(pinfo, subtree, tvb, offset, usb_trans_info, usb_conv_info, &cur_global);
549 proto_item_set_len(subitem, offset-old_offset);
550 } else if (bTag == USBHID_MAINITEM_TAG_ENDCOLLECTION) {
551 /* End collection, break out to parent tree item */
559 /* Dissector for HID "GET DESCRIPTOR" subtype. */
561 dissect_usb_hid_get_report_descriptor(packet_info *pinfo _U_, proto_tree *parent_tree, tvbuff_t *tvb, int offset, usb_conv_info_t *usb_conv_info)
563 proto_item *item=NULL;
564 proto_tree *tree=NULL;
565 int old_offset=offset;
566 struct usb_hid_global_state initial_global;
567 usb_trans_info_t *usb_trans_info;
569 usb_trans_info = usb_conv_info->usb_trans_info;
571 memset(&initial_global, 0, sizeof(struct usb_hid_global_state));
574 item = proto_tree_add_protocol_format(parent_tree, proto_usb_hid, tvb, offset,
576 tree = proto_item_add_subtree(item, ett_usb_hid_report);
577 offset = dissect_usb_hid_report_item(pinfo, tree, tvb, offset, usb_trans_info, usb_conv_info, &initial_global);
579 proto_item_set_len(item, offset-old_offset);
585 /* Dissector for HID GET_REPORT request. See USBHID 1.11, Chapter 7.2.1 Get_Report Request */
587 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_)
589 proto_item *item = NULL;
590 proto_tree *subtree = NULL;
593 item = proto_tree_add_item(tree, hf_usb_hid_value, tvb, offset, 2, ENC_LITTLE_ENDIAN);
594 subtree = proto_item_add_subtree(item, ett_usb_hid_wValue);
596 /* Report Type in the high byte, Report ID in the low byte */
597 proto_tree_add_item(subtree, hf_usb_hid_report_id, tvb, offset, 1, ENC_LITTLE_ENDIAN);
599 proto_tree_add_item(subtree, hf_usb_hid_report_type, tvb, offset, 1, ENC_LITTLE_ENDIAN);
602 proto_tree_add_item(tree, hf_usb_hid_index, tvb, offset, 2, ENC_LITTLE_ENDIAN);
605 proto_tree_add_item(tree, hf_usb_hid_length, tvb, offset, 2, ENC_LITTLE_ENDIAN);
611 /* Dissector for HID SET_REPORT request. See USBHID 1.11, Chapter 7.2.2 Set_Report Request */
613 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_)
615 proto_item *item = NULL;
616 proto_tree *subtree = NULL;
619 item = proto_tree_add_item(tree, hf_usb_hid_value, tvb, offset, 2, ENC_LITTLE_ENDIAN);
620 subtree = proto_item_add_subtree(item, ett_usb_hid_wValue);
622 proto_tree_add_item(subtree, hf_usb_hid_report_id, tvb, offset, 1, ENC_LITTLE_ENDIAN);
624 proto_tree_add_item(subtree, hf_usb_hid_report_type, tvb, offset, 1, ENC_LITTLE_ENDIAN);
627 proto_tree_add_item(tree, hf_usb_hid_index, tvb, offset, 2, ENC_LITTLE_ENDIAN);
630 proto_tree_add_item(tree, hf_usb_hid_length, tvb, offset, 2, ENC_LITTLE_ENDIAN);
637 /* Dissector for HID GET_IDLE request. See USBHID 1.11, Chapter 7.2.3 Get_Idle Request */
639 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_)
641 proto_item *item = NULL;
642 proto_tree *subtree = NULL;
645 item = proto_tree_add_item(tree, hf_usb_hid_value, tvb, offset, 2, ENC_LITTLE_ENDIAN);
646 subtree = proto_item_add_subtree(item, ett_usb_hid_wValue);
648 proto_tree_add_item(subtree, hf_usb_hid_report_id, tvb, offset, 1, ENC_LITTLE_ENDIAN);
650 proto_tree_add_item(subtree, hf_usb_hid_zero, tvb, offset, 1, ENC_LITTLE_ENDIAN);
653 proto_tree_add_item(tree, hf_usb_hid_index, tvb, offset, 2, ENC_LITTLE_ENDIAN);
656 proto_tree_add_item(tree, hf_usb_hid_length, tvb, offset, 2, ENC_LITTLE_ENDIAN);
662 /* Dissector for HID SET_IDLE request. See USBHID 1.11, Chapter 7.2.4 Set_Idle Request */
664 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_)
666 proto_item *item = NULL;
667 proto_tree *subtree = NULL;
670 item = proto_tree_add_item(tree, hf_usb_hid_value, tvb, offset, 2, ENC_LITTLE_ENDIAN);
671 subtree = proto_item_add_subtree(item, ett_usb_hid_wValue);
673 /* Duration in the high byte, Report ID in the low byte */
674 proto_tree_add_item(subtree, hf_usb_hid_report_id, tvb, offset, 1, ENC_LITTLE_ENDIAN);
676 proto_tree_add_item(subtree, hf_usb_hid_duration, tvb, offset, 1, ENC_LITTLE_ENDIAN);
679 proto_tree_add_item(tree, hf_usb_hid_index, tvb, offset, 2, ENC_LITTLE_ENDIAN);
682 proto_tree_add_item(tree, hf_usb_hid_length, tvb, offset, 2, ENC_LITTLE_ENDIAN);
688 /* Dissector for HID GET_PROTOCOL request. See USBHID 1.11, Chapter 7.2.5 Get_Protocol Request */
690 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_)
693 proto_tree_add_item(tree, hf_usb_hid_value, tvb, offset, 2, ENC_LITTLE_ENDIAN);
696 proto_tree_add_item(tree, hf_usb_hid_index, tvb, offset, 2, ENC_LITTLE_ENDIAN);
699 proto_tree_add_item(tree, hf_usb_hid_length, tvb, offset, 2, ENC_LITTLE_ENDIAN);
705 /* Dissector for HID SET_PROTOCOL request. See USBHID 1.11, Chapter 7.2.6 Set_Protocol Request */
707 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_)
710 proto_tree_add_item(tree, hf_usb_hid_value, tvb, offset, 2, ENC_LITTLE_ENDIAN);
713 proto_tree_add_item(tree, hf_usb_hid_index, tvb, offset, 2, ENC_LITTLE_ENDIAN);
716 proto_tree_add_item(tree, hf_usb_hid_length, tvb, offset, 2, ENC_LITTLE_ENDIAN);
723 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);
725 typedef struct _usb_setup_dissector_table_t {
727 usb_setup_dissector dissector;
728 } usb_setup_dissector_table_t;
731 /* USBHID 1.11, Chapter 7.2 Class-Specific Requests */
732 #define USB_HID_SETUP_GET_REPORT 0x01
733 #define USB_HID_SETUP_GET_IDLE 0x02
734 #define USB_HID_SETUP_GET_PROTOCOL 0x03
735 /* 0x04..0x08: Reserved */
736 #define USB_HID_SETUP_SET_REPORT 0x09
737 #define USB_HID_SETUP_SET_IDLE 0x0A
738 #define USB_HID_SETUP_SET_PROTOCOL 0x0B
740 static const usb_setup_dissector_table_t setup_dissectors[] = {
741 { USB_HID_SETUP_GET_REPORT, dissect_usb_hid_get_report },
742 { USB_HID_SETUP_GET_IDLE, dissect_usb_hid_get_idle },
743 { USB_HID_SETUP_GET_PROTOCOL, dissect_usb_hid_get_protocol },
744 { USB_HID_SETUP_SET_REPORT, dissect_usb_hid_set_report },
745 { USB_HID_SETUP_SET_IDLE, dissect_usb_hid_set_idle },
746 { USB_HID_SETUP_SET_PROTOCOL, dissect_usb_hid_set_protocol },
750 static const value_string setup_request_names_vals[] = {
751 { USB_HID_SETUP_GET_REPORT, "GET_REPORT" },
752 { USB_HID_SETUP_GET_IDLE, "GET_IDLE" },
753 { USB_HID_SETUP_GET_PROTOCOL, "GET_PROTOCOL" },
754 { USB_HID_SETUP_SET_REPORT, "SET_REPORT" },
755 { USB_HID_SETUP_SET_IDLE, "SET_IDLE" },
756 { USB_HID_SETUP_SET_PROTOCOL, "SET_PROTOCOL" },
760 static const value_string usb_hid_report_type_vals[] = {
767 /* Dissector for HID class-specific control request as defined in
768 * USBHID 1.11, Chapter 7.2.
769 * Returns tvb_length(tvb) if a class specific dissector was found
773 dissect_usb_hid_control(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *data)
776 usb_conv_info_t *usb_conv_info;
777 usb_trans_info_t *usb_trans_info;
779 usb_setup_dissector dissector;
780 const usb_setup_dissector_table_t *tmp;
782 /* Reject the packet if data or usb_trans_info are NULL */
783 if (data == NULL || ((usb_conv_info_t *)data)->usb_trans_info == NULL)
785 usb_conv_info = (usb_conv_info_t *)data;
786 usb_trans_info = usb_conv_info->usb_trans_info;
788 is_request = (pinfo->srcport==NO_ENDPOINT);
790 /* See if we can find a class specific dissector for this request */
793 /* Check valid values for bmRequestType. See Chapter 7.2 in USBHID 1.11 */
794 if ((usb_trans_info->setup.requesttype & 0x7F) ==
795 ((RQT_SETUP_TYPE_CLASS << 5) | RQT_SETUP_RECIPIENT_INTERFACE)) {
796 for (tmp = setup_dissectors; tmp->dissector; tmp++) {
797 if (tmp->request == usb_trans_info->setup.request) {
798 dissector = tmp->dissector;
803 /* No, we could not find any class specific dissector for this request
804 * return 0 and let USB try any of the standard requests.
810 col_set_str(pinfo->cinfo, COL_PROTOCOL, "USBHID");
812 col_add_fstr(pinfo->cinfo, COL_INFO, "%s %s",
813 val_to_str(usb_trans_info->setup.request, setup_request_names_vals, "Unknown type %x"),
814 is_request ? "Request" : "Response");
817 proto_tree_add_item(tree, hf_usb_hid_request, tvb, offset, 1, ENC_LITTLE_ENDIAN);
821 dissector(pinfo, tree, tvb, offset, is_request, usb_trans_info, usb_conv_info);
822 return tvb_length(tvb);
825 /* dissect a descriptor that is specific to the HID class */
827 dissect_usb_hid_class_descriptors(tvbuff_t *tvb, packet_info *pinfo _U_,
828 proto_tree *tree, void *data _U_)
833 proto_tree *desc_tree;
837 type = tvb_get_guint8(tvb, 1);
839 /* for now, we only handle the HID descriptor here */
840 if (type != USB_DT_HID)
843 desc_tree = proto_tree_add_subtree(tree, tvb, offset, -1, ett_usb_hid_descriptor, &ti, "HID DESCRIPTOR");
845 dissect_usb_descriptor_header(desc_tree, tvb, offset,
846 &hid_descriptor_type_vals_ext);
848 proto_tree_add_item(desc_tree, hf_usb_hid_bcdHID,
849 tvb, offset, 2, ENC_LITTLE_ENDIAN);
851 proto_tree_add_item(desc_tree, hf_usb_hid_bCountryCode,
852 tvb, offset, 1, ENC_LITTLE_ENDIAN);
854 num_desc = tvb_get_guint8(tvb, offset);
855 proto_tree_add_item(desc_tree, hf_usb_hid_bNumDescriptors,
856 tvb, offset, 1, ENC_LITTLE_ENDIAN);
858 for (i=0;i<num_desc;i++) {
859 proto_tree_add_item(desc_tree, hf_usb_hid_bDescriptorType,
860 tvb, offset, 1, ENC_LITTLE_ENDIAN);
862 proto_tree_add_item(desc_tree, hf_usb_hid_wDescriptorLength,
863 tvb, offset, 2, ENC_LITTLE_ENDIAN);
867 proto_item_set_len(ti, offset);
873 proto_register_usb_hid(void)
875 static hf_register_info hf[] = {
876 { &hf_usb_hid_item_bSize,
877 { "bSize", "usbhid.item.bSize", FT_UINT8, BASE_DEC,
878 VALS(usb_hid_item_bSize_vals), USBHID_SIZE_MASK, NULL, HFILL }},
880 { &hf_usb_hid_item_bType,
881 { "bType", "usbhid.item.bType", FT_UINT8, BASE_DEC,
882 VALS(usb_hid_item_bType_vals), USBHID_TYPE_MASK, NULL, HFILL }},
884 { &hf_usb_hid_mainitem_bTag,
885 { "bTag", "usbhid.item.bTag", FT_UINT8, BASE_HEX,
886 VALS(usb_hid_mainitem_bTag_vals), USBHID_TAG_MASK, NULL, HFILL }},
888 { &hf_usb_hid_globalitem_bTag,
889 { "bTag", "usbhid.item.bTag", FT_UINT8, BASE_HEX,
890 VALS(usb_hid_globalitem_bTag_vals), USBHID_TAG_MASK, NULL, HFILL }},
892 { &hf_usb_hid_localitem_bTag,
893 { "bTag", "usbhid.item.bTag", FT_UINT8, BASE_HEX,
894 VALS(usb_hid_localitem_bTag_vals), USBHID_TAG_MASK, NULL, HFILL }},
896 { &hf_usb_hid_longitem_bTag,
897 { "bTag", "usbhid.item.bTag", FT_UINT8, BASE_HEX,
898 VALS(usb_hid_longitem_bTag_vals), USBHID_TAG_MASK, NULL, HFILL }},
900 { &hf_usb_hid_item_bDataSize,
901 { "bDataSize", "usbhid.item.bDataSize", FT_UINT8, BASE_DEC,
902 NULL, 0, NULL, HFILL }},
904 { &hf_usb_hid_item_bLongItemTag,
905 { "bTag", "usbhid.item.bLongItemTag", FT_UINT8, BASE_HEX,
906 NULL, 0, NULL, HFILL }},
908 /* Main-report item data */
910 { &hf_usb_hid_mainitem_bit0,
911 { "Data/constant", "usbhid.item.main.readonly", FT_BOOLEAN, 9,
912 TFS(&tfs_mainitem_bit0), 1<<0, NULL, HFILL }},
914 { &hf_usb_hid_mainitem_bit1,
915 { "Data type", "usbhid.item.main.variable", FT_BOOLEAN, 9,
916 TFS(&tfs_mainitem_bit1), 1<<1, NULL, HFILL }},
918 { &hf_usb_hid_mainitem_bit2,
919 { "Coordinates", "usbhid.item.main.relative", FT_BOOLEAN, 9,
920 TFS(&tfs_mainitem_bit2), 1<<2, NULL, HFILL }},
922 { &hf_usb_hid_mainitem_bit3,
923 { "Min/max wraparound", "usbhid.item.main.wrap", FT_BOOLEAN, 9,
924 TFS(&tfs_mainitem_bit3), 1<<3, NULL, HFILL }},
926 { &hf_usb_hid_mainitem_bit4,
927 { "Physical relationship to data", "usbhid.item.main.nonlinear", FT_BOOLEAN, 9,
928 TFS(&tfs_mainitem_bit4), 1<<4, NULL, HFILL }},
930 { &hf_usb_hid_mainitem_bit5,
931 { "Preferred state", "usbhid.item.main.no_preferred_state", FT_BOOLEAN, 9,
932 TFS(&tfs_mainitem_bit5), 1<<5, NULL, HFILL }},
934 { &hf_usb_hid_mainitem_bit6,
935 { "Has null position", "usbhid.item.main.nullstate", FT_BOOLEAN, 9,
936 TFS(&tfs_mainitem_bit6), 1<<6, NULL, HFILL }},
938 { &hf_usb_hid_mainitem_bit7,
939 { "(Non)-volatile", "usbhid.item.main.volatile", FT_BOOLEAN, 9,
940 TFS(&tfs_mainitem_bit7), 1<<7, NULL, HFILL }},
942 { &hf_usb_hid_mainitem_bit7_input,
943 { "[Reserved]", "usbhid.item.main.volatile", FT_BOOLEAN, 9,
944 NULL, 1<<7, NULL, HFILL }},
946 { &hf_usb_hid_mainitem_bit8,
947 { "Bits or bytes", "usbhid.item.main.buffered_bytes", FT_BOOLEAN, 9,
948 TFS(&tfs_mainitem_bit8), 1<<8, NULL, HFILL }},
950 { &hf_usb_hid_mainitem_colltype,
951 { "Collection type", "usbhid.item.main.colltype", FT_UINT8, BASE_RANGE_STRING|BASE_HEX,
952 RVALS(usb_hid_mainitem_colltype_vals), 0, NULL, HFILL }},
954 /* Global-report item data */
956 { &hf_usb_hid_globalitem_usage,
957 { "Usage page", "usbhid.item.global.usage", FT_UINT8, BASE_RANGE_STRING|BASE_HEX,
958 RVALS(usb_hid_item_usage_vals), 0, NULL, HFILL }},
960 { &hf_usb_hid_globalitem_log_min,
961 { "Logical minimum", "usbhid.item.global.log_min", FT_UINT8, BASE_DEC,
962 NULL, 0, NULL, HFILL }},
964 { &hf_usb_hid_globalitem_log_max,
965 { "Logical maximum", "usbhid.item.global.log_max", FT_UINT8, BASE_DEC,
966 NULL, 0, NULL, HFILL }},
968 { &hf_usb_hid_globalitem_phy_min,
969 { "Physical minimum", "usbhid.item.global.phy_min", FT_UINT8, BASE_DEC,
970 NULL, 0, NULL, HFILL }},
972 { &hf_usb_hid_globalitem_phy_max,
973 { "Physical maximum", "usbhid.item.global.phy_max", FT_UINT8, BASE_DEC,
974 NULL, 0, NULL, HFILL }},
976 { &hf_usb_hid_globalitem_unit_exp,
977 { "Unit exponent", "usbhid.item.global.unit_exp", FT_UINT8, BASE_DEC,
978 NULL, 0, NULL, HFILL }},
980 { &hf_usb_hid_globalitem_unit_sys,
981 { "System", "usbhid.item.global.unit.system", FT_UINT32, BASE_HEX,
982 VALS(usb_hid_globalitem_unit_exp_vals), 0x0000000F, NULL, HFILL }},
984 { &hf_usb_hid_globalitem_unit_len,
985 { "Length", "usbhid.item.global.unit.length", FT_UINT32, BASE_HEX,
986 VALS(usb_hid_globalitem_unit_exp_vals), 0x000000F0, NULL, HFILL }},
988 { &hf_usb_hid_globalitem_unit_mass,
989 { "Mass", "usbhid.item.global.unit.mass", FT_UINT32, BASE_HEX,
990 VALS(usb_hid_globalitem_unit_exp_vals), 0x00000F00, NULL, HFILL }},
992 { &hf_usb_hid_globalitem_unit_time,
993 { "Time", "usbhid.item.global.unit.time", FT_UINT32, BASE_HEX,
994 VALS(usb_hid_globalitem_unit_exp_vals), 0x0000F000, NULL, HFILL }},
996 { &hf_usb_hid_globalitem_unit_temp,
997 { "Temperature", "usbhid.item.global.unit.temperature", FT_UINT32, BASE_HEX,
998 VALS(usb_hid_globalitem_unit_exp_vals), 0x000F0000, NULL, HFILL }},
1000 { &hf_usb_hid_globalitem_unit_current,
1001 { "Current", "usbhid.item.global.unit.current", FT_UINT32, BASE_HEX,
1002 VALS(usb_hid_globalitem_unit_exp_vals), 0x00F00000, NULL, HFILL }},
1004 { &hf_usb_hid_globalitem_unit_brightness,
1005 { "Luminous intensity", "usbhid.item.global.unit.brightness", FT_UINT32, BASE_HEX,
1006 VALS(usb_hid_globalitem_unit_exp_vals), 0x0F000000, NULL, HFILL }},
1008 { &hf_usb_hid_globalitem_report_size,
1009 { "Report size", "usbhid.item.global.report_size", FT_UINT8, BASE_DEC,
1010 NULL, 0, NULL, HFILL }},
1012 { &hf_usb_hid_globalitem_report_id,
1013 { "Report ID", "usbhid.item.global.report_id", FT_UINT8, BASE_HEX,
1014 NULL, 0, NULL, HFILL }},
1016 { &hf_usb_hid_globalitem_report_count,
1017 { "Report count", "usbhid.item.global.report_count", FT_UINT8, BASE_DEC,
1018 NULL, 0, NULL, HFILL }},
1020 { &hf_usb_hid_globalitem_push,
1021 { "Push", "usbhid.item.global.push", FT_UINT8, BASE_HEX,
1022 NULL, 0, NULL, HFILL }},
1024 { &hf_usb_hid_globalitem_pop,
1025 { "Pop", "usbhid.item.global.pop", FT_UINT8, BASE_HEX,
1026 NULL, 0, NULL, HFILL }},
1028 /* Local-report item data */
1030 { &hf_usb_hid_localitem_usage,
1031 { "Usage", "usbhid.item.local.usage", FT_UINT8, BASE_RANGE_STRING|BASE_HEX,
1032 RVALS(usb_hid_item_usage_vals), 0, NULL, HFILL }},
1034 { &hf_usb_hid_localitem_usage_min,
1035 { "Usage minimum", "usbhid.item.local.usage_min", FT_UINT8, BASE_HEX,
1036 NULL, 0, NULL, HFILL }},
1039 { &hf_usb_hid_localitem_usage_max,
1040 { "Usage maximum", "usbhid.item.local.usage_max", FT_UINT8, BASE_HEX,
1041 NULL, 0, NULL, HFILL }},
1044 { &hf_usb_hid_localitem_desig_index,
1045 { "Designator index", "usbhid.item.local.desig_index", FT_UINT8, BASE_HEX,
1046 NULL, 0, NULL, HFILL }},
1048 { &hf_usb_hid_localitem_desig_min,
1049 { "Designator minimum", "usbhid.item.local.desig_min", FT_UINT8, BASE_HEX,
1050 NULL, 0, NULL, HFILL }},
1052 { &hf_usb_hid_localitem_desig_max,
1053 { "Designator maximum", "usbhid.item.local.desig_max", FT_UINT8, BASE_HEX,
1054 NULL, 0, NULL, HFILL }},
1056 { &hf_usb_hid_localitem_string_index,
1057 { "String index", "usbhid.item.local.string_index", FT_UINT8, BASE_HEX,
1058 NULL, 0, NULL, HFILL }},
1060 { &hf_usb_hid_localitem_string_min,
1061 { "String minimum", "usbhid.item.local.string_min", FT_UINT8, BASE_HEX,
1062 NULL, 0, NULL, HFILL }},
1064 { &hf_usb_hid_localitem_string_max,
1065 { "String maximum", "usbhid.item.local.string_max", FT_UINT8, BASE_HEX,
1066 NULL, 0, NULL, HFILL }},
1068 { &hf_usb_hid_localitem_delimiter,
1069 { "Delimiter", "usbhid.item.local.delimiter", FT_UINT8, BASE_HEX,
1070 NULL, 0, NULL, HFILL }},
1073 { &hf_usb_hid_item_unk_data,
1074 { "Item data", "usbhid.item.data", FT_BYTES, BASE_NONE,
1075 NULL, 0, NULL, HFILL }},
1077 /* USB HID specific requests */
1078 { &hf_usb_hid_request,
1079 { "bRequest", "usbhid.setup.bRequest", FT_UINT8, BASE_HEX, VALS(setup_request_names_vals), 0x0,
1082 { &hf_usb_hid_value,
1083 { "wValue", "usbhid.setup.wValue", FT_UINT16, BASE_HEX, NULL, 0x0,
1086 { &hf_usb_hid_index,
1087 { "wIndex", "usbhid.setup.wIndex", FT_UINT16, BASE_DEC, NULL, 0x0,
1090 { &hf_usb_hid_length,
1091 { "wLength", "usbhid.setup.wLength", FT_UINT16, BASE_DEC, NULL, 0x0,
1094 { &hf_usb_hid_report_type,
1095 { "ReportType", "usbhid.setup.ReportType", FT_UINT8, BASE_DEC,
1096 VALS(usb_hid_report_type_vals), 0x0,
1099 { &hf_usb_hid_report_id,
1100 { "ReportID", "usbhid.setup.ReportID", FT_UINT8, BASE_DEC, NULL, 0x0,
1103 { &hf_usb_hid_duration,
1104 { "Duration", "usbhid.setup.Duration", FT_UINT8, BASE_DEC, NULL, 0x0,
1108 { "(zero)", "usbhid.setup.zero", FT_UINT8, BASE_DEC, NULL, 0x0,
1111 /* components of the HID descriptor */
1112 { &hf_usb_hid_bcdHID,
1113 { "bcdHID", "usbhid.descriptor.hid.bcdHID", FT_UINT16, BASE_HEX, NULL, 0x0,
1116 { &hf_usb_hid_bCountryCode,
1117 { "bCountryCode", "usbhid.descriptor.hid.bCountryCode", FT_UINT8,
1118 BASE_HEX, NULL, 0x0, NULL, HFILL }},
1120 { &hf_usb_hid_bNumDescriptors,
1121 { "bNumDescriptors", "usbhid.descriptor.hid.bNumDescriptors", FT_UINT8,
1122 BASE_DEC, NULL, 0x0, NULL, HFILL }},
1124 { &hf_usb_hid_bDescriptorType,
1125 { "bDescriptorType", "usbhid.descriptor.hid.bDescriptorType", FT_UINT8,
1126 BASE_HEX, NULL, 0x0, NULL, HFILL }},
1128 { &hf_usb_hid_wDescriptorLength,
1129 { "wDescriptorLength", "usbhid.descriptor.hid.wDescriptorLength", FT_UINT16,
1130 BASE_DEC, NULL, 0x0, NULL, HFILL }}
1133 static gint *usb_hid_subtrees[] = {
1134 &ett_usb_hid_report,
1135 &ett_usb_hid_item_header,
1136 &ett_usb_hid_wValue,
1137 &ett_usb_hid_descriptor
1140 proto_usb_hid = proto_register_protocol("USB HID", "USBHID", "usbhid");
1141 proto_register_field_array(proto_usb_hid, hf, array_length(hf));
1142 proto_register_subtree_array(usb_hid_subtrees, array_length(usb_hid_subtrees));
1146 proto_reg_handoff_usb_hid(void)
1148 dissector_handle_t usb_hid_control_handle, usb_hid_descr_handle;
1150 usb_hid_control_handle = new_create_dissector_handle(dissect_usb_hid_control, proto_usb_hid);
1151 dissector_add_uint("usb.control", IF_CLASS_HID, usb_hid_control_handle);
1153 usb_hid_descr_handle = new_create_dissector_handle(
1154 dissect_usb_hid_class_descriptors, proto_usb_hid);
1155 dissector_add_uint("usb.descriptor", IF_CLASS_HID, usb_hid_descr_handle);
1159 * Editor modelines - http://www.wireshark.org/tools/modelines.html
1164 * indent-tabs-mode: nil
1167 * vi: set shiftwidth=4 tabstop=8 expandtab:
1168 * :indentSize=4:tabSize=8:noTabs=true: