Prüfung Ich versuche, von einem Wacom Inklingdurch eine HID-Handshake Reverse-Engineering-Bytes über USB
Roel Janssen Echtzeitdaten zu extrahieren hat bereits untersucht die Pakete here:
// Some kind of handshaking.
// Values obtained by sniffing the USB connection between SketchManager and the device.
unsigned char usb_data[33];
memset (&usb_data, '\0', 33);
int bytes = 0;
memcpy (&usb_data, "\x80\x01\x03\x01\x02\x00\x00\x00", 8);
bytes += libusb_control_transfer (handle,
0x21, // bmRequestType
9, // bRequest
0x0380, // wValue
0, // wIndex
usb_data, // data
33, // wLength
0); // timeout
memcpy (&usb_data, "\x80\x01\x0a\x01\x01\x0b\x01\x00", 8);
bytes += libusb_control_transfer (handle, 0x21, 9, 0x0380, 0, usb_data, 33, 0);
memset (&usb_data, '\0', 33);
bytes += libusb_control_transfer (handle, 0xa1, 1, 0x0380, 0, usb_data, 33, 0);
memcpy (&usb_data, "\x80\x01\x0b\x01\x00\x00\x00\x00", 8);
bytes += libusb_control_transfer (handle, 0x21, 9, 0x0380, 0, usb_data, 33, 0);
memcpy (&usb_data, "\x80\x01\x02\x01\x01\x00\x00\x00", 8);
bytes += libusb_control_transfer (handle, 0x21, 9, 0x0380, 0, usb_data, 33, 0);
memcpy (&usb_data, "\x80\x01\x0a\x01\x01\x02\x01\x00", 8);
bytes += libusb_control_transfer (handle, 0x21, 9, 0x0380, 0, usb_data, 33, 0);
memset (&usb_data, '\0', 33);
bytes += libusb_control_transfer (handle, 0xa1, 1, 0x0380, 0, usb_data, 33, 0);
Ich bin versuchen, diesen Code mit HID API neu zu schreiben, die eine sehr minimalen API (here)
nurich werde versuchen muss hid_write
jetzt verwenden, aber es ist vielleicht eine Chance dieser handsh ake sendet eine feature report ...?
Gibt es jemanden da draußen, der den Bytestrom betrachten kann und sieht, was vor sich geht?
EDIT: Es scheint, dass das Inkling eine FlashDrive und HID-Schnittstelle exponiert, so dass ich denke, dass dieser Bytecode die HID-Schnittstelle auswählen muss und es mit dem Senden von Daten zu sagen. Aber kann ich es in einer eleganteren/menschlicheren Form kodieren?
EDIT: Ich habe es funktioniert! Sowohl hid_write
als auch hid_send_feature_report
funktionieren!
hid_device* handle = hid_open(inklingVendorId, inklingProductId, NULL);
jassert(handle != nullptr);
int bytes_written =
hid_send_feature_report(handle, (const unsigned char *)"\x80\x01\x03\x01\x02\x00\x00\x00", 8) +
hid_send_feature_report(handle, (const unsigned char *)"\x80\x01\x0a\x01\x01\x0b\x01\x00", 8) +
hid_send_feature_report(handle, (const unsigned char *)"\x80\x01\x0b\x01\x00\x00\x00\x00", 8) +
hid_send_feature_report(handle, (const unsigned char *)"\x80\x01\x02\x01\x01\x00\x00\x00", 8) +
hid_send_feature_report(handle, (const unsigned char *)"\x80\x01\x0a\x01\x01\x02\x01\x00", 8);
jassert(bytes_written == 5*8);
const int enable_nonblocking = 1, disable_nonblocking = 0;
jassert(hid_set_nonblocking(handle, disable_nonblocking) != FAIL); // want to block
while(true) {
int bytes_got = hid_read(handle, usb_data, 10);
... Allerdings würde ich immer noch gerne verstehen, was vor sich geht. Das ist ziemlich hacky.
EDIT: Ausgabe von lsusb (von Roel, ich habe keine Linux zur Hand):
Bus 003 Device 002: ID 056a:0221 Wacom Co., Ltd
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 2.00
bDeviceClass 0 (Defined at Interface level)
bDeviceSubClass 0
bDeviceProtocol 0
bMaxPacketSize0 64
idVendor 0x056a Wacom Co., Ltd
idProduct 0x0221
bcdDevice 12.56
iManufacturer 1 (error)
iProduct 2 MSC Device
iSerial 5 4833000045C5549C0002DD012DA5549C
bNumConfigurations 1
Configuration Descriptor:
bLength 9
bDescriptorType 2
wTotalLength 57
bNumInterfaces 2
bConfigurationValue 1
iConfiguration 3 USB/MSC Inkling
bmAttributes 0x80
(Bus Powered)
MaxPower 500mA
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 0
bAlternateSetting 0
bNumEndpoints 1
bInterfaceClass 3 Human Interface Device
bInterfaceSubClass 0 No Subclass
bInterfaceProtocol 2 Mouse
iInterface 0
HID Device Descriptor:
bLength 9
bDescriptorType 33
bcdHID 1.01
bCountryCode 0 Not supported
bNumDescriptors 1
bDescriptorType 34 Report
wDescriptorLength 215
Report Descriptor: (length is 215)
Item(Global): Usage Page, data= [ 0x0d ] 13
Digitizer
Item(Local): Usage, data= [ 0x02 ] 2
Pen
Item(Main ): Collection, data= [ 0x01 ] 1
Application
Item(Global): Report ID, data= [ 0x02 ] 2
Item(Local): Usage, data= [ 0x02 ] 2
Pen
Item(Main ): Collection, data= [ 0x00 ] 0
Physical
Item(Global): Usage Page, data= [ 0x01 ] 1
Generic Desktop Controls
Item(Local): Usage, data= [ 0x30 ] 48
Direction-X
Item(Local): Usage, data= [ 0x31 ] 49
Direction-Y
Item(Global): Logical Minimum, data= [ 0x00 ] 0
Item(Global): Logical Maximum, data= [ 0x80 0x07 ] 1920
Item(Global): Physical Minimum, data= [ 0x00 ] 0
Item(Global): Physical Maximum, data= [ 0x00 0x78 ] 30720
Item(Global): Unit, data= [ 0x11 ] 17
System: SI Linear, Unit: Centimeter
Item(Global): Unit Exponent, data= [ 0x0e ] 14
Unit Exponent: 14
Item(Global): Report Size, data= [ 0x10 ] 16
Item(Global): Report Count, data= [ 0x02 ] 2
Item(Main ): Input, data= [ 0x02 ] 2
Data Variable Absolute No_Wrap Linear
Preferred_State No_Null_Position Non_Volatile Bitfield
Item(Global): Usage Page, data= [ 0x0d ] 13
Digitizer
Item(Local): Usage, data= [ 0x42 ] 66
Tip Switch
Item(Local): Usage, data= [ 0x45 ] 69
Eraser
Item(Local): Usage, data= [ 0x44 ] 68
Barrel Switch
Item(Local): Usage, data= [ 0x32 ] 50
In Range
Item(Global): Logical Minimum, data= [ 0x00 ] 0
Item(Global): Logical Maximum, data= [ 0x01 ] 1
Item(Global): Report Size, data= [ 0x01 ] 1
Item(Global): Report Count, data= [ 0x04 ] 4
Item(Global): Unit, data= [ 0x00 ] 0
System: None, Unit: (None)
Item(Main ): Input, data= [ 0x02 ] 2
Data Variable Absolute No_Wrap Linear
Preferred_State No_Null_Position Non_Volatile Bitfield
Item(Global): Usage Page, data= [ 0x09 ] 9
Buttons
Item(Local): Usage Minimum, data= [ 0x01 ] 1
Button 1 (Primary)
Item(Local): Usage Maximum, data= [ 0x04 ] 4
Button 4
Item(Global): Logical Minimum, data= [ 0x00 ] 0
Item(Global): Logical Maximum, data= [ 0x01 ] 1
Item(Global): Report Size, data= [ 0x01 ] 1
Item(Global): Report Count, data= [ 0x04 ] 4
Item(Main ): Input, data= [ 0x02 ] 2
Data Variable Absolute No_Wrap Linear
Preferred_State No_Null_Position Non_Volatile Bitfield
Item(Global): Usage Page, data= [ 0x0d ] 13
Digitizer
Item(Local): Usage, data= [ 0x30 ] 48
Tip Pressure
Item(Global): Logical Minimum, data= [ 0x00 ] 0
Item(Global): Logical Maximum, data= [ 0x00 0x04 ] 1024
Item(Global): Report Size, data= [ 0x10 ] 16
Item(Global): Report Count, data= [ 0x01 ] 1
Item(Main ): Input, data= [ 0x02 ] 2
Data Variable Absolute No_Wrap Linear
Preferred_State No_Null_Position Non_Volatile Bitfield
Item(Global): Usage Page, data= [ 0x0d ] 13
Digitizer
Item(Local): Usage, data= [ 0x3d ] 61
X Tilt
Item(Local): Usage, data= [ 0x3e ] 62
Y Tilt
Item(Global): Logical Minimum, data= [ 0x81 ] 129
Item(Global): Logical Maximum, data= [ 0x7f ] 127
Item(Global): Report Size, data= [ 0x08 ] 8
Item(Global): Report Count, data= [ 0x02 ] 2
Item(Main ): Input, data= [ 0x02 ] 2
Data Variable Absolute No_Wrap Linear
Preferred_State No_Null_Position Non_Volatile Bitfield
Item(Main ): End Collection, data=none
Item(Global): Usage Page, data= [ 0x01 ] 1
Generic Desktop Controls
Item(Local): Usage, data= [ 0x00 ] 0
Undefined
Item(Global): Report ID, data= [ 0x04 ] 4
Item(Global): Logical Minimum, data= [ 0x00 ] 0
Item(Global): Logical Maximum, data= [ 0xff 0x00 ] 255
Item(Global): Report Size, data= [ 0x08 ] 8
Item(Global): Report Count, data= [ 0x0c ] 12
Item(Main ): Input, data= [ 0x02 ] 2
Data Variable Absolute No_Wrap Linear
Preferred_State No_Null_Position Non_Volatile Bitfield
Item(Global): Usage Page, data= [ 0x01 ] 1
Generic Desktop Controls
Item(Local): Usage, data= [ 0x00 ] 0
Undefined
Item(Global): Report ID, data= [ 0x08 ] 8
Item(Global): Logical Minimum, data= [ 0x00 ] 0
Item(Global): Logical Maximum, data= [ 0xff 0x00 ] 255
Item(Global): Report Size, data= [ 0x08 ] 8
Item(Global): Report Count, data= [ 0x3b ] 59
Item(Main ): Input, data= [ 0x02 ] 2
Data Variable Absolute No_Wrap Linear
Preferred_State No_Null_Position Non_Volatile Bitfield
Item(Local): Usage, data= [ 0x01 ] 1
Pointer
Item(Global): Report ID, data= [ 0x80 ] 128
Item(Global): Report Size, data= [ 0x08 ] 8
Item(Global): Report Count, data= [ 0x20 ] 32
Item(Main ): Feature, data= [ 0x02 ] 2
Data Variable Absolute No_Wrap Linear
Preferred_State No_Null_Position Non_Volatile Bitfield
Item(Main ): End Collection, data=none
Item(Global): Usage Page, data= [ 0x01 ] 1
Generic Desktop Controls
Item(Local): Usage, data= [ 0x02 ] 2
Mouse
Item(Main ): Collection, data= [ 0x01 ] 1
Application
Item(Global): Report ID, data= [ 0x01 ] 1
Item(Local): Usage, data= [ 0x01 ] 1
Pointer
Item(Main ): Collection, data= [ 0x00 ] 0
Physical
Item(Global): Usage Page, data= [ 0x01 ] 1
Generic Desktop Controls
Item(Local): Usage, data= [ 0x30 ] 48
Direction-X
Item(Local): Usage, data= [ 0x31 ] 49
Direction-Y
Item(Global): Logical Minimum, data= [ 0x00 ] 0
Item(Global): Logical Maximum, data= [ 0x80 0x07 ] 1920
Item(Global): Physical Minimum, data= [ 0x00 ] 0
Item(Global): Physical Maximum, data= [ 0x00 0x78 ] 30720
Item(Global): Unit, data= [ 0x11 ] 17
System: SI Linear, Unit: Centimeter
Item(Global): Unit Exponent, data= [ 0x0e ] 14
Unit Exponent: 14
Item(Global): Report Size, data= [ 0x10 ] 16
Item(Global): Report Count, data= [ 0x02 ] 2
Item(Main ): Input, data= [ 0x02 ] 2
Data Variable Absolute No_Wrap Linear
Preferred_State No_Null_Position Non_Volatile Bitfield
Item(Global): Usage Page, data= [ 0x09 ] 9
Buttons
Item(Local): Usage Minimum, data= [ 0x01 ] 1
Button 1 (Primary)
Item(Local): Usage Maximum, data= [ 0x03 ] 3
Button 3 (Tertiary)
Item(Global): Logical Minimum, data= [ 0x00 ] 0
Item(Global): Logical Maximum, data= [ 0x01 ] 1
Item(Global): Report Size, data= [ 0x01 ] 1
Item(Global): Report Count, data= [ 0x03 ] 3
Item(Global): Unit, data= [ 0x00 ] 0
System: None, Unit: (None)
Item(Main ): Input, data= [ 0x02 ] 2
Data Variable Absolute No_Wrap Linear
Preferred_State No_Null_Position Non_Volatile Bitfield
Item(Global): Report Count, data= [ 0x05 ] 5
Item(Main ): Input, data= [ 0x01 ] 1
Constant Array Absolute No_Wrap Linear
Preferred_State No_Null_Position Non_Volatile Bitfield
Item(Main ): End Collection, data=none
Item(Main ): End Collection, data=none
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x83 EP 3 IN
bmAttributes 3
Transfer Type Interrupt
Synch Type None
Usage Type Data
wMaxPacketSize 0x0040 1x 64 bytes
bInterval 4
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 1
bAlternateSetting 0
bNumEndpoints 2
bInterfaceClass 8 Mass Storage
bInterfaceSubClass 6 SCSI
bInterfaceProtocol 80 Bulk-Only
iInterface 4 USB/MSC Inkling
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x81 EP 1 IN
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0200 1x 512 bytes
bInterval 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x02 EP 2 OUT
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0200 1x 512 bytes
bInterval 0
Device Qualifier (for other device speed):
bLength 10
bDescriptorType 6
bcdUSB 2.00
bDeviceClass 0 (Defined at Interface level)
bDeviceSubClass 0
bDeviceProtocol 0
bMaxPacketSize0 64
bNumConfigurations 2
Device Status: 0x0000
(Bus Powered)
Danke dafür, während ich die Informationen hier verdauen, habe ich meine Frage hauptsächlich aktualisiert, um zu bestätigen, was Sie bezüglich lsusb gesagt haben. –
aktualisierte Antwort ... –