1593 lines
54 KiB
C
1593 lines
54 KiB
C
/* packet-usb.c
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*
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* $Id$
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*
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* USB basic dissector
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* By Paolo Abeni <paolo.abeni@email.it>
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* Ronnie Sahlberg 2006
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#ifdef HAVE_CONFIG_H
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# include "config.h"
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#endif
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#include <glib.h>
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#include <epan/packet.h>
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#include <epan/prefs.h>
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#include <epan/etypes.h>
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#include <epan/addr_resolv.h>
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#include <epan/emem.h>
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#include <epan/tap.h>
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#include <epan/conversation.h>
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#include <epan/expert.h>
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#include <string.h>
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#include "packet-usb.h"
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/* protocols and header fields */
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static int proto_usb = -1;
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static int hf_usb_urb_id = -1;
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static int hf_usb_bus_id = -1;
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static int hf_usb_transfer_type = -1;
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static int hf_usb_urb_type = -1;
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static int hf_usb_device_address = -1;
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static int hf_usb_data_flag = -1;
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static int hf_usb_setup_flag = -1;
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static int hf_usb_endpoint_number = -1;
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static int hf_usb_src_endpoint_number = -1;
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static int hf_usb_dst_endpoint_number = -1;
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static int hf_usb_request = -1;
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static int hf_usb_value = -1;
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static int hf_usb_index = -1;
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static int hf_usb_length = -1;
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static int hf_usb_data = -1;
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static int hf_usb_bmRequestType = -1;
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static int hf_usb_bmRequestType_direction = -1;
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static int hf_usb_bmRequestType_type = -1;
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static int hf_usb_bmRequestType_recipient = -1;
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static int hf_usb_bDescriptorType = -1;
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static int hf_usb_descriptor_index = -1;
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static int hf_usb_language_id = -1;
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static int hf_usb_bLength = -1;
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static int hf_usb_bcdUSB = -1;
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static int hf_usb_bDeviceClass = -1;
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static int hf_usb_bDeviceSubClass = -1;
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static int hf_usb_bDeviceProtocol = -1;
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static int hf_usb_bMaxPacketSize0 = -1;
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static int hf_usb_idVendor = -1;
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static int hf_usb_idProduct = -1;
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static int hf_usb_bcdDevice = -1;
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static int hf_usb_iManufacturer = -1;
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static int hf_usb_iProduct = -1;
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static int hf_usb_iSerialNumber = -1;
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static int hf_usb_bNumConfigurations = -1;
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static int hf_usb_wLANGID = -1;
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static int hf_usb_bString = -1;
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static int hf_usb_bInterfaceNumber = -1;
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static int hf_usb_bAlternateSetting = -1;
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static int hf_usb_bNumEndpoints = -1;
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static int hf_usb_bInterfaceClass = -1;
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static int hf_usb_bInterfaceSubClass = -1;
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static int hf_usb_bInterfaceProtocol = -1;
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static int hf_usb_iInterface = -1;
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static int hf_usb_bEndpointAddress = -1;
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static int hf_usb_bmAttributes = -1;
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static int hf_usb_bEndpointAttributeTransfer = -1;
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static int hf_usb_bEndpointAttributeSynchonisation = -1;
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static int hf_usb_bEndpointAttributeBehaviour = -1;
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static int hf_usb_wMaxPacketSize = -1;
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static int hf_usb_bInterval = -1;
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static int hf_usb_wTotalLength = -1;
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static int hf_usb_bNumInterfaces = -1;
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static int hf_usb_bConfigurationValue = -1;
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static int hf_usb_iConfiguration = -1;
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static int hf_usb_bMaxPower = -1;
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static int hf_usb_configuration_bmAttributes = -1;
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static int hf_usb_configuration_legacy10buspowered = -1;
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static int hf_usb_configuration_selfpowered = -1;
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static int hf_usb_configuration_remotewakeup = -1;
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static int hf_usb_bEndpointAddress_direction = -1;
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static int hf_usb_bEndpointAddress_number = -1;
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static int hf_usb_response_in = -1;
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static int hf_usb_time = -1;
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static int hf_usb_request_in = -1;
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static gint usb_hdr = -1;
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static gint usb_setup_hdr = -1;
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static gint ett_usb_setup_bmrequesttype = -1;
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static gint ett_descriptor_device = -1;
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static gint ett_configuration_bmAttributes = -1;
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static gint ett_configuration_bEndpointAddress = -1;
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static gint ett_endpoint_bmAttributes = -1;
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static int usb_tap = -1;
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static dissector_table_t usb_bulk_dissector_table;
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static dissector_table_t usb_control_dissector_table;
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static const value_string usb_langid_vals[] = {
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{0x0000, "no language specified"},
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{0x0409, "English (United States)"},
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{0, NULL}
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};
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static const value_string usb_interfaceclass_vals[] = {
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{IF_CLASS_FROM_INTERFACE_DESC, "Use class info in Interface Descriptor"},
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{IF_CLASS_AUDIO, "AUDIO"},
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{IF_CLASS_COMMUNICATIONS, "COMMUNICATIONS"},
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{IF_CLASS_HID, "HID"},
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{IF_CLASS_PHYSICAL, "PHYSICAL"},
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{IF_CLASS_IMAGE, "IMAGE"},
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{IF_CLASS_PRINTER, "PRINTER"},
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{IF_CLASS_MASSTORAGE, "MASSTORAGE"},
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{IF_CLASS_HUB, "HUB"},
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{IF_CLASS_CDC_DATA, "CDC_DATA"},
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{IF_CLASS_SMART_CARD, "SMART_CARD"},
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{IF_CLASS_CONTENT_SECURITY, "CONTENT_SECURITY"},
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{IF_CLASS_VIDEO, "VIDEO"},
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{IF_CLASS_DIAGNOSTIC_DEVICE, "DIAGNOSTIC_DEVICE"},
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{IF_CLASS_WIRELESS_CONTROLLER, "WIRELESS_CONTROLLER"},
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{IF_CLASS_MISCELLANEOUS, "MISCELLANEOUS"},
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{IF_CLASS_APPLICATION_SPECIFIC, "APPLICATION_SPECIFIC"},
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{IF_CLASS_VENDOR_SPECIFIC, "VENDOR_SPECIFIC"},
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{0, NULL}
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};
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static const value_string usb_transfer_type_vals[] = {
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{URB_CONTROL, "URB_CONTROL"},
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{URB_ISOCHRONOUS,"URB_ISOCHRONOUS"},
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{URB_INTERRUPT,"URB_INTERRUPT"},
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{URB_BULK,"URB_BULK"},
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{0, NULL}
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};
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static const value_string usb_urb_type_vals[] = {
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{URB_SUBMIT, "URB_SUBMIT"},
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{URB_COMPLETE,"URB_COMPLETE"},
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{URB_ERROR,"URB_ERROR"},
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{0, NULL}
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};
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#define USB_DT_DEVICE 0x01
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#define USB_DT_CONFIG 0x02
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#define USB_DT_STRING 0x03
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#define USB_DT_INTERFACE 0x04
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#define USB_DT_ENDPOINT 0x05
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#define USB_DT_DEVICE_QUALIFIER 0x06
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#define USB_DT_OTHER_SPEED_CONFIG 0x07
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#define USB_DT_INTERFACE_POWER 0x08
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/* these are from a minor usb 2.0 revision (ECN) */
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#define USB_DT_OTG 0x09
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#define USB_DT_DEBUG 0x0a
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#define USB_DT_INTERFACE_ASSOCIATION 0x0b
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/* these are from the Wireless USB spec */
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#define USB_DT_SECURITY 0x0c
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#define USB_DT_KEY 0x0d
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#define USB_DT_ENCRYPTION_TYPE 0x0e
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#define USB_DT_BOS 0x0f
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#define USB_DT_DEVICE_CAPABILITY 0x10
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#define USB_DT_WIRELESS_ENDPOINT_COMP 0x11
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#define USB_DT_HID 0x21
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#define USB_DT_RPIPE 0x22
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static const value_string descriptor_type_vals[] = {
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{USB_DT_DEVICE, "DEVICE"},
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{USB_DT_CONFIG, "CONFIGURATION"},
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{USB_DT_STRING, "STRING"},
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{USB_DT_INTERFACE, "INTERFACE"},
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{USB_DT_ENDPOINT, "ENDPOINT"},
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{USB_DT_DEVICE_QUALIFIER, "DEVICE QUALIFIER"},
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{USB_DT_OTHER_SPEED_CONFIG, "OTHER_SPEED CONFIG"},
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{USB_DT_INTERFACE_POWER, "INTERFACE POWER"},
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{USB_DT_OTG, "OTG"},
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{USB_DT_DEBUG, "DEBUG"},
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{USB_DT_INTERFACE_ASSOCIATION, "INTERFACE ASSOCIATION"},
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{USB_DT_SECURITY, "SECURITY"},
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{USB_DT_KEY, "KEY"},
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{USB_DT_ENCRYPTION_TYPE, "ENCRYPTION TYPE"},
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{USB_DT_BOS, "BOS"},
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{USB_DT_DEVICE_CAPABILITY, "DEVICE CAPABILITY"},
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{USB_DT_WIRELESS_ENDPOINT_COMP, "WIRELESS ENDPOINT COMP"},
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{USB_DT_HID, "HID"},
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{USB_DT_RPIPE, "RPIPE"},
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{0,NULL}
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};
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static const value_string usb_bmAttributes_transfer_vals[] = {
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{0x00, "Control-Transfer"},
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{0x01, "Isochronous-Transfer"},
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{0x02, "Bulk-Transfer"},
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{0x03, "Interrupt-Transfer"},
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{0,NULL}
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};
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static const value_string usb_bmAttributes_sync_vals[] = {
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{0x00, "No Sync"},
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{0x04, "Asynchronous"},
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{0x08, "Adaptive"},
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{0x0c, "Synchronous"},
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{0,NULL}
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};
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static const value_string usb_bmAttributes_behaviour_vals[] = {
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{0x00, "Data-Endpoint"},
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{0x10, "Explicit Feedback-Endpoint"},
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{0x20, "Implicit Feedback-Data-Endpoint"},
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{0x30, "Reserved"},
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{0,NULL}
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};
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static usb_conv_info_t *
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get_usb_conv_info(conversation_t *conversation)
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{
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usb_conv_info_t *usb_conv_info;
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/* do we have conversation specific data ? */
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usb_conv_info = conversation_get_proto_data(conversation, proto_usb);
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if(!usb_conv_info){
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/* no not yet so create some */
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usb_conv_info = se_alloc(sizeof(usb_conv_info_t));
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usb_conv_info->interfaceClass=IF_CLASS_UNKNOWN;
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usb_conv_info->transactions=se_tree_create_non_persistent(EMEM_TREE_TYPE_RED_BLACK, "usb transactions");
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usb_conv_info->class_data=NULL;
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conversation_add_proto_data(conversation, proto_usb, usb_conv_info);
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}
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return usb_conv_info;
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}
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static conversation_t *
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get_usb_conversation(packet_info *pinfo, address *src_addr, address *dst_addr, guint32 src_endpoint, guint32 dst_endpoint)
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{
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conversation_t *conversation;
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/*
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* Do we have a conversation for this connection?
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*/
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conversation = find_conversation(pinfo->fd->num,
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src_addr, dst_addr,
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pinfo->ptype,
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src_endpoint, dst_endpoint, 0);
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if(conversation){
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return conversation;
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}
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/* We don't yet have a conversation, so create one. */
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conversation = conversation_new(pinfo->fd->num,
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src_addr, dst_addr,
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pinfo->ptype,
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src_endpoint, dst_endpoint, 0);
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return conversation;
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}
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/* SETUP dissectors */
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/*
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* This dissector is used to dissect the setup part and the data
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* for URB_CONTROL_INPUT / GET DESCRIPTOR
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*/
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/* 9.6.2 */
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static int
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dissect_usb_device_qualifier_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_)
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{
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proto_item *item=NULL;
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proto_tree *tree=NULL;
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int old_offset=offset;
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if(parent_tree){
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item=proto_tree_add_text(parent_tree, tvb, offset, 0, "DEVICE QUALIFIER DESCRIPTOR");
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tree=proto_item_add_subtree(item, ett_descriptor_device);
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}
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/* bLength */
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proto_tree_add_item(tree, hf_usb_bLength, tvb, offset, 1, TRUE);
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offset++;
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/* bDescriptorType */
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proto_tree_add_item(tree, hf_usb_bDescriptorType, tvb, offset, 1, TRUE);
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offset++;
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/* bcdUSB */
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proto_tree_add_item(tree, hf_usb_bcdUSB, tvb, offset, 2, TRUE);
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offset+=2;
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/* bDeviceClass */
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proto_tree_add_item(tree, hf_usb_bDeviceClass, tvb, offset, 1, TRUE);
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offset++;
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/* bDeviceSubClass */
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proto_tree_add_item(tree, hf_usb_bDeviceSubClass, tvb, offset, 1, TRUE);
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offset++;
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/* bDeviceProtocol */
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proto_tree_add_item(tree, hf_usb_bDeviceProtocol, tvb, offset, 1, TRUE);
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offset++;
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/* bMaxPacketSize0 */
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proto_tree_add_item(tree, hf_usb_bMaxPacketSize0, tvb, offset, 1, TRUE);
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offset++;
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/* bNumConfigurations */
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proto_tree_add_item(tree, hf_usb_bNumConfigurations, tvb, offset, 1, TRUE);
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offset++;
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/* one reserved byte */
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offset++;
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if(item){
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proto_item_set_len(item, offset-old_offset);
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}
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return offset;
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}
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/* 9.6.1 */
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static int
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dissect_usb_device_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_)
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{
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proto_item *item=NULL;
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proto_tree *tree=NULL;
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int old_offset=offset;
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if(parent_tree){
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item=proto_tree_add_text(parent_tree, tvb, offset, 0, "DEVICE DESCRIPTOR");
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tree=proto_item_add_subtree(item, ett_descriptor_device);
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}
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/* bLength */
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proto_tree_add_item(tree, hf_usb_bLength, tvb, offset, 1, TRUE);
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offset++;
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/* bDescriptorType */
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proto_tree_add_item(tree, hf_usb_bDescriptorType, tvb, offset, 1, TRUE);
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offset++;
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/* bcdUSB */
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proto_tree_add_item(tree, hf_usb_bcdUSB, tvb, offset, 2, TRUE);
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offset+=2;
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/* bDeviceClass */
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proto_tree_add_item(tree, hf_usb_bDeviceClass, tvb, offset, 1, TRUE);
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offset++;
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/* bDeviceSubClass */
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proto_tree_add_item(tree, hf_usb_bDeviceSubClass, tvb, offset, 1, TRUE);
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offset++;
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/* bDeviceProtocol */
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proto_tree_add_item(tree, hf_usb_bDeviceProtocol, tvb, offset, 1, TRUE);
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offset++;
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/* bMaxPacketSize0 */
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proto_tree_add_item(tree, hf_usb_bMaxPacketSize0, tvb, offset, 1, TRUE);
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offset++;
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/* idVendor */
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proto_tree_add_item(tree, hf_usb_idVendor, tvb, offset, 2, TRUE);
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offset+=2;
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/* idProduct */
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proto_tree_add_item(tree, hf_usb_idProduct, tvb, offset, 2, TRUE);
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offset+=2;
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/* bcdDevice */
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proto_tree_add_item(tree, hf_usb_bcdDevice, tvb, offset, 2, TRUE);
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offset+=2;
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/* iManufacturer */
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proto_tree_add_item(tree, hf_usb_iManufacturer, tvb, offset, 1, TRUE);
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offset++;
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/* iProduct */
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proto_tree_add_item(tree, hf_usb_iProduct, tvb, offset, 1, TRUE);
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offset++;
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/* iSerialNumber */
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proto_tree_add_item(tree, hf_usb_iSerialNumber, tvb, offset, 1, TRUE);
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offset++;
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/* bNumConfigurations */
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proto_tree_add_item(tree, hf_usb_bNumConfigurations, tvb, offset, 1, TRUE);
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offset++;
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if(item){
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proto_item_set_len(item, offset-old_offset);
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}
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return offset;
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}
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/* 9.6.7 */
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static int
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dissect_usb_string_descriptor(packet_info *pinfo _U_, proto_tree *parent_tree, tvbuff_t *tvb, int offset, usb_trans_info_t *usb_trans_info, usb_conv_info_t *usb_conv_info _U_)
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{
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proto_item *item=NULL;
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proto_tree *tree=NULL;
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int old_offset=offset;
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guint8 len;
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if(parent_tree){
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item=proto_tree_add_text(parent_tree, tvb, offset, 0, "STRING DESCRIPTOR");
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tree=proto_item_add_subtree(item, ett_descriptor_device);
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}
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/* bLength */
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proto_tree_add_item(tree, hf_usb_bLength, tvb, offset, 1, TRUE);
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len=tvb_get_guint8(tvb, offset);
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offset++;
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/* bDescriptorType */
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proto_tree_add_item(tree, hf_usb_bDescriptorType, tvb, offset, 1, TRUE);
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offset++;
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if(!usb_trans_info->u.get_descriptor.index){
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/* list of languanges */
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while(len>(offset-old_offset)){
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/* wLANGID */
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proto_tree_add_item(tree, hf_usb_wLANGID, tvb, offset, 2, TRUE);
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offset+=2;
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}
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} else {
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char *str;
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/* unicode string */
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str=tvb_get_ephemeral_faked_unicode(tvb, offset, (len-2)/2, TRUE);
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proto_tree_add_string(tree, hf_usb_bString, tvb, offset, len-2, str);
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}
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if(item){
|
|
proto_item_set_len(item, offset-old_offset);
|
|
}
|
|
|
|
return offset;
|
|
}
|
|
|
|
|
|
|
|
/* 9.6.5 */
|
|
static int
|
|
dissect_usb_interface_descriptor(packet_info *pinfo, proto_tree *parent_tree, tvbuff_t *tvb, int offset, usb_trans_info_t *usb_trans_info, usb_conv_info_t *usb_conv_info)
|
|
{
|
|
proto_item *item=NULL;
|
|
proto_tree *tree=NULL;
|
|
int old_offset=offset;
|
|
|
|
if(parent_tree){
|
|
item=proto_tree_add_text(parent_tree, tvb, offset, 0, "INTERFACE DESCRIPTOR");
|
|
tree=proto_item_add_subtree(item, ett_descriptor_device);
|
|
}
|
|
|
|
/* bLength */
|
|
proto_tree_add_item(tree, hf_usb_bLength, tvb, offset, 1, TRUE);
|
|
offset++;
|
|
|
|
/* bDescriptorType */
|
|
proto_tree_add_item(tree, hf_usb_bDescriptorType, tvb, offset, 1, TRUE);
|
|
offset++;
|
|
|
|
/* bInterfaceNumber */
|
|
proto_tree_add_item(tree, hf_usb_bInterfaceNumber, tvb, offset, 1, TRUE);
|
|
offset++;
|
|
|
|
/* bAlternateSetting */
|
|
proto_tree_add_item(tree, hf_usb_bAlternateSetting, tvb, offset, 1, TRUE);
|
|
offset++;
|
|
|
|
/* bNumEndpoints */
|
|
proto_tree_add_item(tree, hf_usb_bNumEndpoints, tvb, offset, 1, TRUE);
|
|
offset++;
|
|
|
|
/* bInterfaceClass */
|
|
proto_tree_add_item(tree, hf_usb_bInterfaceClass, tvb, offset, 1, TRUE);
|
|
/* save the class so we can access it later in the endpoint descriptor */
|
|
usb_conv_info->interfaceClass=tvb_get_guint8(tvb, offset);
|
|
if(!pinfo->fd->flags.visited){
|
|
usb_trans_info->interface_info=se_alloc(sizeof(usb_conv_info_t));
|
|
usb_trans_info->interface_info->interfaceClass=tvb_get_guint8(tvb, offset);
|
|
usb_trans_info->interface_info->transactions=se_tree_create_non_persistent(EMEM_TREE_TYPE_RED_BLACK, "usb transactions");
|
|
usb_trans_info->interface_info->class_data=NULL;
|
|
}
|
|
offset++;
|
|
|
|
/* bInterfaceSubClass */
|
|
proto_tree_add_item(tree, hf_usb_bInterfaceSubClass, tvb, offset, 1, TRUE);
|
|
offset++;
|
|
|
|
/* bInterfaceProtocol */
|
|
proto_tree_add_item(tree, hf_usb_bInterfaceProtocol, tvb, offset, 1, TRUE);
|
|
offset++;
|
|
|
|
/* iInterface */
|
|
proto_tree_add_item(tree, hf_usb_iInterface, tvb, offset, 1, TRUE);
|
|
offset++;
|
|
|
|
if(item){
|
|
proto_item_set_len(item, offset-old_offset);
|
|
}
|
|
|
|
return offset;
|
|
}
|
|
|
|
/* 9.6.6 */
|
|
static const true_false_string tfs_endpoint_direction = {
|
|
"IN Endpoint",
|
|
"OUT Endpoint"
|
|
};
|
|
static int
|
|
dissect_usb_endpoint_descriptor(packet_info *pinfo, 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;
|
|
proto_item *endpoint_item=NULL;
|
|
proto_tree *endpoint_tree=NULL;
|
|
proto_item *ep_attrib_item=NULL;
|
|
proto_tree *ep_attrib_tree=NULL;
|
|
int old_offset=offset;
|
|
guint8 endpoint;
|
|
|
|
if(parent_tree){
|
|
item=proto_tree_add_text(parent_tree, tvb, offset, 0, "ENDPOINT DESCRIPTOR");
|
|
tree=proto_item_add_subtree(item, ett_descriptor_device);
|
|
}
|
|
|
|
/* bLength */
|
|
proto_tree_add_item(tree, hf_usb_bLength, tvb, offset, 1, TRUE);
|
|
offset++;
|
|
|
|
/* bDescriptorType */
|
|
proto_tree_add_item(tree, hf_usb_bDescriptorType, tvb, offset, 1, TRUE);
|
|
offset++;
|
|
|
|
/* bEndpointAddress */
|
|
if(tree){
|
|
endpoint_item=proto_tree_add_item(tree, hf_usb_bEndpointAddress, tvb, offset, 1, TRUE);
|
|
endpoint_tree=proto_item_add_subtree(endpoint_item, ett_configuration_bEndpointAddress);
|
|
}
|
|
endpoint=tvb_get_guint8(tvb, offset)&0x0f;
|
|
proto_tree_add_item(endpoint_tree, hf_usb_bEndpointAddress_direction, tvb, offset, 1, TRUE);
|
|
proto_item_append_text(endpoint_item, " %s", (tvb_get_guint8(tvb, offset)&0x80)?"IN":"OUT");
|
|
proto_tree_add_item(endpoint_tree, hf_usb_bEndpointAddress_number, tvb, offset, 1, TRUE);
|
|
proto_item_append_text(endpoint_item, " Endpoint:%d", endpoint);
|
|
offset++;
|
|
|
|
/* Together with class from the interface descriptor we know what kind
|
|
* of class the device at endpoint is.
|
|
* Make sure a conversation exists for this endpoint and attach a
|
|
* usb_conv_into_t structure to it.
|
|
*
|
|
* All endpoints for the same interface descriptor share the same
|
|
* usb_conv_info structure.
|
|
*/
|
|
if((!pinfo->fd->flags.visited)&&usb_trans_info->interface_info){
|
|
conversation_t *conversation;
|
|
|
|
if(pinfo->destport==NO_ENDPOINT){
|
|
static address tmp_addr;
|
|
static usb_address_t usb_addr;
|
|
|
|
/* Create a new address structure that points to the same device
|
|
* but the new endpoint.
|
|
*/
|
|
usb_addr.device=((usb_address_t *)(pinfo->src.data))->device;
|
|
usb_addr.endpoint=endpoint;
|
|
SET_ADDRESS(&tmp_addr, AT_USB, USB_ADDR_LEN, (char *)&usb_addr);
|
|
conversation=get_usb_conversation(pinfo, &tmp_addr, &pinfo->dst, endpoint, pinfo->destport);
|
|
} else {
|
|
static address tmp_addr;
|
|
static usb_address_t usb_addr;
|
|
|
|
/* Create a new address structure that points to the same device
|
|
* but the new endpoint.
|
|
*/
|
|
usb_addr.device=((usb_address_t *)(pinfo->dst.data))->device;
|
|
usb_addr.endpoint=endpoint;
|
|
SET_ADDRESS(&tmp_addr, AT_USB, USB_ADDR_LEN, (char *)&usb_addr);
|
|
conversation=get_usb_conversation(pinfo, &pinfo->src, &tmp_addr, pinfo->srcport, endpoint);
|
|
}
|
|
|
|
conversation_add_proto_data(conversation, proto_usb, usb_trans_info->interface_info);
|
|
}
|
|
|
|
/* bmAttributes */
|
|
if (tree) {
|
|
ep_attrib_item=proto_tree_add_item(tree, hf_usb_bmAttributes, tvb, offset, 1, TRUE);
|
|
ep_attrib_tree=proto_item_add_subtree(ep_attrib_item, ett_endpoint_bmAttributes);
|
|
}
|
|
proto_tree_add_item(ep_attrib_tree, hf_usb_bEndpointAttributeTransfer, tvb, offset, 1, TRUE);
|
|
/* isochronous only */
|
|
proto_tree_add_item(ep_attrib_tree, hf_usb_bEndpointAttributeSynchonisation, tvb, offset, 1, TRUE);
|
|
/* isochronous only */
|
|
proto_tree_add_item(ep_attrib_tree, hf_usb_bEndpointAttributeBehaviour, tvb, offset, 1, TRUE);
|
|
offset++;
|
|
|
|
/* wMaxPacketSize */
|
|
proto_tree_add_item(tree, hf_usb_wMaxPacketSize, tvb, offset, 2, TRUE);
|
|
offset+=2;
|
|
|
|
/* bInterval */
|
|
proto_tree_add_item(tree, hf_usb_bInterval, tvb, offset, 1, TRUE);
|
|
offset++;
|
|
|
|
if(item){
|
|
proto_item_set_len(item, offset-old_offset);
|
|
}
|
|
|
|
return offset;
|
|
}
|
|
|
|
static int
|
|
dissect_usb_unknown_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;
|
|
guint8 bLength;
|
|
|
|
if(parent_tree){
|
|
item=proto_tree_add_text(parent_tree, tvb, offset, 0, "UNKNOWN DESCRIPTOR");
|
|
tree=proto_item_add_subtree(item, ett_descriptor_device);
|
|
}
|
|
|
|
/* bLength */
|
|
proto_tree_add_item(tree, hf_usb_bLength, tvb, offset, 1, TRUE);
|
|
bLength = tvb_get_guint8(tvb, offset);
|
|
offset++;
|
|
if (bLength < 3) {
|
|
item = proto_tree_add_text(parent_tree, tvb, offset - 1, 1,
|
|
"Invalid bLength: %u", bLength);
|
|
expert_add_info_format(pinfo, item, PI_MALFORMED, PI_ERROR,
|
|
"Invalid bLength: %u", bLength);
|
|
return offset;
|
|
}
|
|
|
|
/* bDescriptorType */
|
|
proto_tree_add_item(tree, hf_usb_bDescriptorType, tvb, offset, 1, TRUE);
|
|
offset++;
|
|
|
|
offset += bLength - 2;
|
|
|
|
if(item){
|
|
proto_item_set_len(item, offset-old_offset);
|
|
}
|
|
|
|
return offset;
|
|
}
|
|
|
|
/* 9.6.3 */
|
|
static const true_false_string tfs_mustbeone = {
|
|
"Must be 1 for USB 1.1 and higher",
|
|
"FIXME: Is this a USB 1.0 device"
|
|
};
|
|
static const true_false_string tfs_selfpowered = {
|
|
"This device is SELF-POWERED",
|
|
"This device is powered from the USB bus"
|
|
};
|
|
static const true_false_string tfs_remotewakeup = {
|
|
"This device supports REMOTE WAKEUP",
|
|
"This device does NOT support remote wakeup"
|
|
};
|
|
static int
|
|
dissect_usb_configuration_descriptor(packet_info *pinfo _U_, proto_tree *parent_tree, tvbuff_t *tvb, int offset, usb_trans_info_t *usb_trans_info, usb_conv_info_t *usb_conv_info)
|
|
{
|
|
proto_item *item=NULL;
|
|
proto_tree *tree=NULL;
|
|
int old_offset=offset;
|
|
guint16 len;
|
|
proto_item *flags_item=NULL;
|
|
proto_tree *flags_tree=NULL;
|
|
guint8 flags;
|
|
proto_item *power_item=NULL;
|
|
guint8 power;
|
|
|
|
if(parent_tree){
|
|
item=proto_tree_add_text(parent_tree, tvb, offset, 0, "CONFIGURATION DESCRIPTOR");
|
|
tree=proto_item_add_subtree(item, ett_descriptor_device);
|
|
}
|
|
|
|
/* bLength */
|
|
proto_tree_add_item(tree, hf_usb_bLength, tvb, offset, 1, TRUE);
|
|
offset++;
|
|
|
|
/* bDescriptorType */
|
|
proto_tree_add_item(tree, hf_usb_bDescriptorType, tvb, offset, 1, TRUE);
|
|
offset++;
|
|
|
|
/* wTotalLength */
|
|
proto_tree_add_item(tree, hf_usb_wTotalLength, tvb, offset, 2, TRUE);
|
|
len=tvb_get_letohs(tvb, offset);
|
|
offset+=2;
|
|
|
|
/* bNumInterfaces */
|
|
proto_tree_add_item(tree, hf_usb_bNumInterfaces, tvb, offset, 1, TRUE);
|
|
offset++;
|
|
|
|
/* bConfigurationValue */
|
|
proto_tree_add_item(tree, hf_usb_bConfigurationValue, tvb, offset, 1, TRUE);
|
|
offset++;
|
|
|
|
/* iConfiguration */
|
|
proto_tree_add_item(tree, hf_usb_iConfiguration, tvb, offset, 1, TRUE);
|
|
offset++;
|
|
|
|
/* bmAttributes */
|
|
if(tree){
|
|
flags_item=proto_tree_add_item(tree, hf_usb_configuration_bmAttributes, tvb, offset, 1, TRUE);
|
|
flags_tree=proto_item_add_subtree(flags_item, ett_configuration_bmAttributes);
|
|
}
|
|
flags=tvb_get_guint8(tvb, offset);
|
|
proto_tree_add_item(flags_tree, hf_usb_configuration_legacy10buspowered, tvb, offset, 1, TRUE);
|
|
proto_tree_add_item(flags_tree, hf_usb_configuration_selfpowered, tvb, offset, 1, TRUE);
|
|
proto_item_append_text(flags_item, " %sSELF-POWERED", (flags&0x40)?"":"NOT ");
|
|
flags&=~0x40;
|
|
proto_tree_add_item(flags_tree, hf_usb_configuration_remotewakeup, tvb, offset, 1, TRUE);
|
|
proto_item_append_text(flags_item, " %sREMOTE-WAKEUP", (flags&0x20)?"":"NO ");
|
|
flags&=~0x20;
|
|
offset++;
|
|
|
|
/* bMaxPower */
|
|
power_item=proto_tree_add_item(tree, hf_usb_bMaxPower, tvb, offset, 1, TRUE);
|
|
power=tvb_get_guint8(tvb, offset);
|
|
proto_item_append_text(power_item, " (%dmA)", power*2);
|
|
offset++;
|
|
|
|
/* initialize interface_info to NULL */
|
|
usb_trans_info->interface_info=NULL;
|
|
|
|
/* decode any additional interface and endpoint descriptors */
|
|
while(len>(old_offset-offset)){
|
|
guint8 next_type;
|
|
|
|
if(tvb_length_remaining(tvb, offset)<2){
|
|
break;
|
|
}
|
|
next_type=tvb_get_guint8(tvb, offset+1);
|
|
switch(next_type){
|
|
case USB_DT_INTERFACE:
|
|
offset=dissect_usb_interface_descriptor(pinfo, parent_tree, tvb, offset, usb_trans_info, usb_conv_info);
|
|
break;
|
|
case USB_DT_ENDPOINT:
|
|
offset=dissect_usb_endpoint_descriptor(pinfo, parent_tree, tvb, offset, usb_trans_info, usb_conv_info);
|
|
break;
|
|
default:
|
|
offset=dissect_usb_unknown_descriptor(pinfo, parent_tree, tvb, offset, usb_trans_info, usb_conv_info);
|
|
break;
|
|
/* was: return offset; */
|
|
}
|
|
}
|
|
|
|
if(item){
|
|
proto_item_set_len(item, offset-old_offset);
|
|
}
|
|
|
|
return offset;
|
|
}
|
|
|
|
|
|
static void
|
|
dissect_usb_setup_get_descriptor(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)
|
|
{
|
|
if(is_request){
|
|
/* descriptor index */
|
|
proto_tree_add_item(tree, hf_usb_descriptor_index, tvb, offset, 1, TRUE);
|
|
usb_trans_info->u.get_descriptor.index=tvb_get_guint8(tvb, offset);
|
|
offset++;
|
|
|
|
/* descriptor type */
|
|
proto_tree_add_item(tree, hf_usb_bDescriptorType, tvb, offset, 1, TRUE);
|
|
usb_trans_info->u.get_descriptor.type=tvb_get_guint8(tvb, offset);
|
|
offset++;
|
|
if (check_col(pinfo->cinfo, COL_INFO)) {
|
|
col_append_fstr(pinfo->cinfo, COL_INFO, " %s",
|
|
val_to_str(usb_trans_info->u.get_descriptor.type, descriptor_type_vals, "Unknown type %x"));
|
|
}
|
|
|
|
/* language id */
|
|
proto_tree_add_item(tree, hf_usb_language_id, tvb, offset, 2, TRUE);
|
|
offset+=2;
|
|
|
|
/* length */
|
|
proto_tree_add_item(tree, hf_usb_length, tvb, offset, 2, TRUE);
|
|
offset += 2;
|
|
} else {
|
|
if (check_col(pinfo->cinfo, COL_INFO)) {
|
|
col_append_fstr(pinfo->cinfo, COL_INFO, " %s",
|
|
val_to_str(usb_trans_info->u.get_descriptor.type, descriptor_type_vals, "Unknown type %x"));
|
|
}
|
|
switch(usb_trans_info->u.get_descriptor.type){
|
|
case USB_DT_DEVICE:
|
|
offset=dissect_usb_device_descriptor(pinfo, tree, tvb, offset, usb_trans_info, usb_conv_info);
|
|
break;
|
|
case USB_DT_CONFIG:
|
|
offset=dissect_usb_configuration_descriptor(pinfo, tree, tvb, offset, usb_trans_info, usb_conv_info);
|
|
break;
|
|
case USB_DT_STRING:
|
|
offset=dissect_usb_string_descriptor(pinfo, tree, tvb, offset, usb_trans_info, usb_conv_info);
|
|
break;
|
|
case USB_DT_INTERFACE:
|
|
offset=dissect_usb_interface_descriptor(pinfo, tree, tvb, offset, usb_trans_info, usb_conv_info);
|
|
break;
|
|
case USB_DT_ENDPOINT:
|
|
offset=dissect_usb_endpoint_descriptor(pinfo, tree, tvb, offset, usb_trans_info, usb_conv_info);
|
|
break;
|
|
case USB_DT_DEVICE_QUALIFIER:
|
|
offset=dissect_usb_device_qualifier_descriptor(pinfo, tree, tvb, offset, usb_trans_info, usb_conv_info);
|
|
break;
|
|
default:
|
|
/* XXX dissect the descriptor coming back from the device */
|
|
proto_tree_add_text(tree, tvb, offset, tvb_length_remaining(tvb, offset), "get descriptor data...");
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
|
|
|
|
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;
|
|
#define USB_SETUP_GET_DESCRIPTOR 6
|
|
static const usb_setup_dissector_table_t setup_dissectors[] = {
|
|
{USB_SETUP_GET_DESCRIPTOR, dissect_usb_setup_get_descriptor},
|
|
{0, NULL}
|
|
};
|
|
static const value_string setup_request_names_vals[] = {
|
|
{USB_SETUP_GET_DESCRIPTOR, "GET DESCRIPTOR"},
|
|
{0, NULL}
|
|
};
|
|
|
|
|
|
#define USB_DIR_OUT 0 /* to device */
|
|
#define USB_DIR_IN 0x80 /* to host */
|
|
|
|
static const true_false_string tfs_bmrequesttype_direction = {
|
|
"Device-to-host",
|
|
"Host-to-device"
|
|
};
|
|
|
|
#define USB_TYPE_MASK (0x03 << 5)
|
|
#define RQT_SETUP_TYPE_STANDARD 0
|
|
#define RQT_SETUP_TYPE_CLASS 1
|
|
#define RQT_SETUP_TYPE_VENDOR 2
|
|
|
|
static const value_string bmrequesttype_type_vals[] = {
|
|
{RQT_SETUP_TYPE_STANDARD, "Standard"},
|
|
{RQT_SETUP_TYPE_CLASS, "Class"},
|
|
{RQT_SETUP_TYPE_VENDOR, "Vendor"},
|
|
{0, NULL}
|
|
};
|
|
static const value_string bmrequesttype_recipient_vals[] = {
|
|
{0, "Device"},
|
|
{1, "Interface"},
|
|
{2, "Endpoint"},
|
|
{3, "Other"},
|
|
{0, NULL}
|
|
};
|
|
|
|
static int
|
|
dissect_usb_bmrequesttype(proto_tree *parent_tree, tvbuff_t *tvb, int offset,
|
|
int *type)
|
|
{
|
|
proto_item *item=NULL;
|
|
proto_tree *tree=NULL;
|
|
guint8 bmRequestType;
|
|
|
|
if(parent_tree){
|
|
item=proto_tree_add_item(parent_tree, hf_usb_bmRequestType, tvb, offset, 1, TRUE);
|
|
tree = proto_item_add_subtree(item, ett_usb_setup_bmrequesttype);
|
|
}
|
|
|
|
bmRequestType = tvb_get_guint8(tvb, offset);
|
|
*type = (bmRequestType & USB_TYPE_MASK) >>5;
|
|
proto_tree_add_item(tree, hf_usb_bmRequestType_direction, tvb, offset, 1, TRUE);
|
|
proto_tree_add_item(tree, hf_usb_bmRequestType_type, tvb, offset, 1, TRUE);
|
|
proto_tree_add_item(tree, hf_usb_bmRequestType_recipient, tvb, offset, 1, TRUE);
|
|
|
|
offset++;
|
|
return offset;
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
static void
|
|
dissect_linux_usb(tvbuff_t *tvb, packet_info *pinfo, proto_tree *parent)
|
|
{
|
|
int offset = 0;
|
|
int type, endpoint;
|
|
guint8 setup_flag;
|
|
proto_tree *tree = NULL;
|
|
guint32 src_device, dst_device, tmp_addr;
|
|
static usb_address_t src_addr, dst_addr; /* has to be static due to SET_ADDRESS */
|
|
guint32 src_endpoint, dst_endpoint;
|
|
gboolean is_request=FALSE;
|
|
usb_conv_info_t *usb_conv_info=NULL;
|
|
usb_trans_info_t *usb_trans_info=NULL;
|
|
conversation_t *conversation;
|
|
usb_tap_data_t *tap_data=NULL;
|
|
|
|
if (check_col(pinfo->cinfo, COL_PROTOCOL))
|
|
col_set_str(pinfo->cinfo, COL_PROTOCOL, "USB");
|
|
|
|
/* add usb hdr*/
|
|
if (parent) {
|
|
proto_item *ti = NULL;
|
|
ti = proto_tree_add_protocol_format(parent, proto_usb, tvb, 0, sizeof(struct usb_request_hdr), "USB URB");
|
|
|
|
tree = proto_item_add_subtree(ti, usb_hdr);
|
|
}
|
|
|
|
proto_tree_add_uint64(tree, hf_usb_urb_id, tvb, 0, 0,
|
|
pinfo->pseudo_header->linux_usb.id);
|
|
|
|
proto_tree_add_uint(tree, hf_usb_urb_type, tvb, 0, 0,
|
|
pinfo->pseudo_header->linux_usb.event_type);
|
|
|
|
type = pinfo->pseudo_header->linux_usb.transfer_type;
|
|
proto_tree_add_uint(tree, hf_usb_transfer_type, tvb, 0, 0, type);
|
|
if (check_col(pinfo->cinfo, COL_INFO)) {
|
|
col_append_str(pinfo->cinfo, COL_INFO,
|
|
val_to_str(type, usb_transfer_type_vals, "Unknown type %x"));
|
|
}
|
|
|
|
#if 0
|
|
/* The direction flag is broken so we must strip it off */
|
|
endpoint=pinfo->pseudo_header->linux_usb.endpoint_number;
|
|
#else
|
|
endpoint=pinfo->pseudo_header->linux_usb.endpoint_number&(~URB_TRANSFER_IN);
|
|
#endif
|
|
proto_tree_add_uint(tree, hf_usb_endpoint_number, tvb, 0, 0, endpoint);
|
|
|
|
tmp_addr=pinfo->pseudo_header->linux_usb.device_address;
|
|
proto_tree_add_uint(tree, hf_usb_device_address, tvb, 0, 0, tmp_addr);
|
|
|
|
proto_tree_add_uint(tree, hf_usb_bus_id, tvb, 0, 0,
|
|
pinfo->pseudo_header->linux_usb.bus_id);
|
|
|
|
setup_flag = pinfo->pseudo_header->linux_usb.setup_flag;
|
|
proto_tree_add_uint(tree, hf_usb_setup_flag, tvb, 0, 0, setup_flag);
|
|
|
|
proto_tree_add_uint(tree, hf_usb_data_flag, tvb, 0, 0,
|
|
pinfo->pseudo_header->linux_usb.data_flag);
|
|
|
|
#if 0
|
|
/* this is how it is supposed to work but this flag seems to be broken -- ronnie */
|
|
is_request = endpoint & URB_TRANSFER_IN;
|
|
#else
|
|
/* Determine whether this is a request or a response */
|
|
switch(type){
|
|
case URB_BULK:
|
|
case URB_CONTROL:
|
|
case URB_ISOCHRONOUS:
|
|
switch(pinfo->pseudo_header->linux_usb.event_type){
|
|
case URB_SUBMIT:
|
|
is_request=TRUE;
|
|
break;
|
|
case URB_COMPLETE:
|
|
case URB_ERROR:
|
|
is_request=FALSE;
|
|
break;
|
|
default:
|
|
DISSECTOR_ASSERT_NOT_REACHED();
|
|
}
|
|
break;
|
|
case URB_INTERRUPT:
|
|
switch(pinfo->pseudo_header->linux_usb.event_type){
|
|
case URB_SUBMIT:
|
|
is_request=FALSE;
|
|
break;
|
|
case URB_COMPLETE:
|
|
case URB_ERROR:
|
|
is_request=TRUE;
|
|
break;
|
|
default:
|
|
DISSECTOR_ASSERT_NOT_REACHED();
|
|
}
|
|
break;
|
|
default:
|
|
DISSECTOR_ASSERT_NOT_REACHED();
|
|
}
|
|
#endif
|
|
|
|
/* Set up addresses and ports.
|
|
* Note that URB_INTERRUPT goes in the reverse direction and thus
|
|
* the request comes from the device and not the host.
|
|
*/
|
|
if ( (is_request&&(type!=URB_INTERRUPT))
|
|
|| (!is_request&&(type==URB_INTERRUPT)) ){
|
|
src_addr.device = src_device = 0xffffffff;
|
|
src_addr.endpoint = src_endpoint = NO_ENDPOINT;
|
|
dst_addr.device = dst_device = htolel(tmp_addr);
|
|
dst_addr.endpoint = dst_endpoint = htolel(endpoint);
|
|
} else {
|
|
src_addr.device = src_device = htolel(tmp_addr);
|
|
src_addr.endpoint = src_endpoint = htolel(endpoint);
|
|
dst_addr.device = dst_device = 0xffffffff;
|
|
dst_addr.endpoint = dst_endpoint = NO_ENDPOINT;
|
|
}
|
|
|
|
SET_ADDRESS(&pinfo->net_src, AT_USB, USB_ADDR_LEN, (char *)&src_addr);
|
|
SET_ADDRESS(&pinfo->src, AT_USB, USB_ADDR_LEN, (char *)&src_addr);
|
|
SET_ADDRESS(&pinfo->net_dst, AT_USB, USB_ADDR_LEN, (char *)&dst_addr);
|
|
SET_ADDRESS(&pinfo->dst, AT_USB, USB_ADDR_LEN, (char *)&dst_addr);
|
|
pinfo->ptype=PT_USB;
|
|
pinfo->srcport=src_endpoint;
|
|
pinfo->destport=dst_endpoint;
|
|
|
|
conversation=get_usb_conversation(pinfo, &pinfo->src, &pinfo->dst, pinfo->srcport, pinfo->destport);
|
|
|
|
usb_conv_info=get_usb_conv_info(conversation);
|
|
pinfo->usb_conv_info=usb_conv_info;
|
|
|
|
|
|
/* request/response matching so we can keep track of transaction specific
|
|
* data.
|
|
*/
|
|
if(is_request){
|
|
/* this is a request */
|
|
usb_trans_info=se_tree_lookup32(usb_conv_info->transactions, pinfo->fd->num);
|
|
if(!usb_trans_info){
|
|
usb_trans_info=se_alloc(sizeof(usb_trans_info_t));
|
|
usb_trans_info->request_in=pinfo->fd->num;
|
|
usb_trans_info->response_in=0;
|
|
usb_trans_info->req_time=pinfo->fd->abs_ts;
|
|
usb_trans_info->requesttype=0;
|
|
usb_trans_info->request=0;
|
|
se_tree_insert32(usb_conv_info->transactions, pinfo->fd->num, usb_trans_info);
|
|
}
|
|
usb_conv_info->usb_trans_info=usb_trans_info;
|
|
|
|
if(usb_trans_info && usb_trans_info->response_in){
|
|
proto_item *ti;
|
|
|
|
ti=proto_tree_add_uint(tree, hf_usb_response_in, tvb, 0, 0, usb_trans_info->response_in);
|
|
PROTO_ITEM_SET_GENERATED(ti);
|
|
}
|
|
} else {
|
|
/* this is a response */
|
|
if(pinfo->fd->flags.visited){
|
|
usb_trans_info=se_tree_lookup32(usb_conv_info->transactions, pinfo->fd->num);
|
|
} else {
|
|
usb_trans_info=se_tree_lookup32_le(usb_conv_info->transactions, pinfo->fd->num);
|
|
if(usb_trans_info){
|
|
usb_trans_info->response_in=pinfo->fd->num;
|
|
se_tree_insert32(usb_conv_info->transactions, pinfo->fd->num, usb_trans_info);
|
|
}
|
|
}
|
|
usb_conv_info->usb_trans_info=usb_trans_info;
|
|
|
|
if(usb_trans_info && usb_trans_info->request_in){
|
|
proto_item *ti;
|
|
nstime_t t, deltat;
|
|
|
|
ti=proto_tree_add_uint(tree, hf_usb_request_in, tvb, 0, 0, usb_trans_info->request_in);
|
|
PROTO_ITEM_SET_GENERATED(ti);
|
|
|
|
t = pinfo->fd->abs_ts;
|
|
nstime_delta(&deltat, &t, &usb_trans_info->req_time);
|
|
ti=proto_tree_add_time(tree, hf_usb_time, tvb, 0, 0, &deltat);
|
|
PROTO_ITEM_SET_GENERATED(ti);
|
|
}
|
|
}
|
|
|
|
/* For DLT189 it seems
|
|
* that all INTERRUPT or BULK packets as well as all CONTROL responses
|
|
* are prepended with 8 mysterious bytes.
|
|
*/
|
|
switch(type){
|
|
case URB_CONTROL:
|
|
if(pinfo->pseudo_header->linux_usb.event_type!=URB_SUBMIT){
|
|
offset+=8;
|
|
}
|
|
break;
|
|
case URB_BULK:
|
|
case URB_ISOCHRONOUS:
|
|
case URB_INTERRUPT:
|
|
offset+=8;
|
|
break;
|
|
default:
|
|
DISSECTOR_ASSERT_NOT_REACHED();
|
|
}
|
|
|
|
tap_data=ep_alloc(sizeof(usb_tap_data_t));
|
|
tap_data->urb_type=(guint8)pinfo->pseudo_header->linux_usb.event_type;
|
|
tap_data->transfer_type=(guint8)type;
|
|
tap_data->conv_info=usb_conv_info;
|
|
tap_data->trans_info=usb_trans_info;
|
|
tap_queue_packet(usb_tap, pinfo, tap_data);
|
|
|
|
|
|
switch(type){
|
|
case URB_BULK:
|
|
{
|
|
proto_item *item;
|
|
|
|
item=proto_tree_add_uint(tree, hf_usb_bInterfaceClass, tvb, 0, 0, usb_conv_info->interfaceClass);
|
|
PROTO_ITEM_SET_GENERATED(item);
|
|
if(tvb_length_remaining(tvb, offset)){
|
|
tvbuff_t *next_tvb;
|
|
|
|
pinfo->usb_conv_info=usb_conv_info;
|
|
next_tvb=tvb_new_subset(tvb, offset, -1, -1);
|
|
if(dissector_try_port(usb_bulk_dissector_table, usb_conv_info->interfaceClass, next_tvb, pinfo, parent)){
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
break;
|
|
case URB_CONTROL:
|
|
{
|
|
const usb_setup_dissector_table_t *tmp;
|
|
usb_setup_dissector dissector;
|
|
proto_item *ti = NULL;
|
|
proto_tree *setup_tree = NULL;
|
|
int type;
|
|
|
|
ti=proto_tree_add_uint(tree, hf_usb_bInterfaceClass, tvb, offset, 0, usb_conv_info->interfaceClass);
|
|
PROTO_ITEM_SET_GENERATED(ti);
|
|
|
|
if(is_request){
|
|
if (setup_flag == 0) {
|
|
tvbuff_t *next_tvb;
|
|
|
|
/* this is a request */
|
|
ti = proto_tree_add_protocol_format(tree, proto_usb, tvb, offset, sizeof(struct usb_request_hdr), "URB setup");
|
|
setup_tree = proto_item_add_subtree(ti, usb_setup_hdr);
|
|
usb_trans_info->requesttype=tvb_get_guint8(tvb, offset);
|
|
offset=dissect_usb_bmrequesttype(setup_tree, tvb, offset, &type);
|
|
|
|
|
|
/* read the request code and spawn off to a class specific
|
|
* dissector if found
|
|
*/
|
|
usb_trans_info->request=tvb_get_guint8(tvb, offset);
|
|
|
|
switch (type) {
|
|
|
|
case RQT_SETUP_TYPE_STANDARD:
|
|
/*
|
|
* This is a standard request which is managed by this
|
|
* dissector
|
|
*/
|
|
proto_tree_add_item(setup_tree, hf_usb_request, tvb, offset, 1, TRUE);
|
|
offset += 1;
|
|
|
|
if (check_col(pinfo->cinfo, COL_INFO)) {
|
|
col_clear(pinfo->cinfo, COL_INFO);
|
|
col_append_fstr(pinfo->cinfo, COL_INFO, "%s Request",
|
|
val_to_str(usb_trans_info->request, setup_request_names_vals, "Unknown type %x"));
|
|
}
|
|
|
|
dissector=NULL;
|
|
for(tmp=setup_dissectors;tmp->dissector;tmp++){
|
|
if(tmp->request==usb_trans_info->request){
|
|
dissector=tmp->dissector;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if(dissector){
|
|
dissector(pinfo, setup_tree, tvb, offset, is_request, usb_trans_info, usb_conv_info);
|
|
offset+=6;
|
|
} else {
|
|
proto_tree_add_item(setup_tree, hf_usb_value, tvb, offset, 2, TRUE);
|
|
offset += 2;
|
|
proto_tree_add_item(setup_tree, hf_usb_index, tvb, offset, 2, TRUE);
|
|
offset += 2;
|
|
proto_tree_add_item(setup_tree, hf_usb_length, tvb, offset, 2, TRUE);
|
|
offset += 2;
|
|
}
|
|
break;
|
|
|
|
case RQT_SETUP_TYPE_CLASS:
|
|
/* Try to find a class specific dissector */
|
|
next_tvb=tvb_new_subset(tvb, offset, -1, -1);
|
|
if(dissector_try_port(usb_control_dissector_table, usb_conv_info->interfaceClass, next_tvb, pinfo, tree)){
|
|
return;
|
|
/* XXX - dump as hex */
|
|
}
|
|
break;
|
|
}
|
|
} else {
|
|
offset += 8;
|
|
}
|
|
} else {
|
|
tvbuff_t *next_tvb;
|
|
|
|
/* this is a response */
|
|
if(usb_conv_info->usb_trans_info){
|
|
/* Try to find a class specific dissector */
|
|
next_tvb=tvb_new_subset(tvb, offset, -1, -1);
|
|
if(dissector_try_port(usb_control_dissector_table, usb_conv_info->interfaceClass, next_tvb, pinfo, tree)){
|
|
return;
|
|
}
|
|
|
|
if (check_col(pinfo->cinfo, COL_INFO)) {
|
|
col_clear(pinfo->cinfo, COL_INFO);
|
|
col_append_fstr(pinfo->cinfo, COL_INFO, "%s Response",
|
|
val_to_str(usb_conv_info->usb_trans_info->request, setup_request_names_vals, "Unknown type %x"));
|
|
}
|
|
|
|
dissector=NULL;
|
|
for(tmp=setup_dissectors;tmp->dissector;tmp++){
|
|
if(tmp->request==usb_conv_info->usb_trans_info->request){
|
|
dissector=tmp->dissector;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if(dissector){
|
|
dissector(pinfo, tree, tvb, offset, is_request, usb_conv_info->usb_trans_info, usb_conv_info);
|
|
}
|
|
} else {
|
|
/* no matching request available */
|
|
;
|
|
}
|
|
}
|
|
}
|
|
break;
|
|
default:
|
|
/* dont know */
|
|
if (setup_flag == 0) {
|
|
proto_item *ti = NULL;
|
|
proto_tree *setup_tree = NULL;
|
|
guint8 requesttype, request;
|
|
int type;
|
|
|
|
ti = proto_tree_add_protocol_format(tree, proto_usb, tvb, offset, sizeof(struct usb_request_hdr), "URB setup");
|
|
setup_tree = proto_item_add_subtree(ti, usb_setup_hdr);
|
|
|
|
|
|
requesttype=tvb_get_guint8(tvb, offset);
|
|
offset=dissect_usb_bmrequesttype(setup_tree, tvb, offset, &type);
|
|
|
|
request=tvb_get_guint8(tvb, offset);
|
|
proto_tree_add_item(setup_tree, hf_usb_request, tvb, offset, 1, TRUE);
|
|
offset += 1;
|
|
|
|
proto_tree_add_item(tree, hf_usb_value, tvb, offset, 2, TRUE);
|
|
offset += 2;
|
|
proto_tree_add_item(tree, hf_usb_index, tvb, offset, 2, TRUE);
|
|
offset += 2;
|
|
proto_tree_add_item(tree, hf_usb_length, tvb, offset, 2, TRUE);
|
|
offset += 2;
|
|
} else {
|
|
offset += 8;
|
|
}
|
|
break;
|
|
}
|
|
|
|
proto_tree_add_item(tree, hf_usb_data, tvb, offset, -1, FALSE);
|
|
}
|
|
|
|
void
|
|
proto_register_usb(void)
|
|
{
|
|
static hf_register_info hf[] = {
|
|
|
|
{ &hf_usb_urb_id,
|
|
{ "URB id", "usb.urb_id", FT_UINT64, BASE_DEC,
|
|
NULL, 0x0,
|
|
"URB id", HFILL }},
|
|
|
|
{ &hf_usb_bus_id,
|
|
{ "URB bus id", "usb.bus_id", FT_UINT16, BASE_DEC,
|
|
NULL, 0x0,
|
|
"URB bus id", HFILL }},
|
|
|
|
{ &hf_usb_urb_type,
|
|
{ "URB type", "usb.urb_type", FT_UINT8, BASE_DEC,
|
|
VALS(usb_urb_type_vals), 0x0,
|
|
"URB type", HFILL }},
|
|
|
|
{ &hf_usb_transfer_type,
|
|
{ "URB transfer type", "usb.transfer_type", FT_UINT8, BASE_DEC,
|
|
VALS(usb_transfer_type_vals), 0x0,
|
|
"URB transfer type", HFILL }},
|
|
|
|
{ &hf_usb_device_address,
|
|
{ "Device", "usb.device_address", FT_UINT8, BASE_DEC, NULL, 0x0,
|
|
"USB device address", HFILL }},
|
|
|
|
{ &hf_usb_data_flag,
|
|
{ "Data flag", "usb.data_flag", FT_UINT8, BASE_DEC, NULL, 0x0,
|
|
"USB data flag", HFILL }},
|
|
|
|
{ &hf_usb_setup_flag,
|
|
{ "Setup flag", "usb.setup_flag", FT_UINT8, BASE_DEC, NULL, 0x0,
|
|
"USB setup flag", HFILL }},
|
|
|
|
{ &hf_usb_endpoint_number,
|
|
{ "Endpoint", "usb.endpoint_number", FT_UINT8, BASE_HEX, NULL, 0x0,
|
|
"USB endpoint number", HFILL }},
|
|
|
|
{ &hf_usb_src_endpoint_number,
|
|
{ "Src Endpoint", "usb.src.endpoint", FT_UINT8, BASE_HEX, NULL, 0x0,
|
|
"Source USB endpoint number", HFILL }},
|
|
|
|
{ &hf_usb_dst_endpoint_number,
|
|
{ "Dst Endpoint", "usb.dst.endpoint", FT_UINT8, BASE_HEX, NULL, 0x0,
|
|
"Destination USB endpoint number", HFILL }},
|
|
|
|
{ &hf_usb_bmRequestType,
|
|
{ "bmRequestType", "usb.bmRequestType", FT_UINT8, BASE_HEX, NULL, 0x0,
|
|
"", HFILL }},
|
|
|
|
{ &hf_usb_request,
|
|
{ "bRequest", "usb.setup.bRequest", FT_UINT8, BASE_HEX, VALS(setup_request_names_vals), 0x0,
|
|
"", HFILL }},
|
|
|
|
{ &hf_usb_value,
|
|
{ "wValue", "usb.setup.wValue", FT_UINT16, BASE_HEX, NULL, 0x0,
|
|
"", HFILL }},
|
|
|
|
{ &hf_usb_index,
|
|
{ "wIndex", "usb.setup.wIndex", FT_UINT16, BASE_DEC, NULL, 0x0,
|
|
"", HFILL }},
|
|
|
|
{ &hf_usb_length,
|
|
{ "wLength", "usb.setup.wLength", FT_UINT16, BASE_DEC, NULL, 0x0,
|
|
"", HFILL }},
|
|
|
|
{ &hf_usb_data,
|
|
{"Application Data", "usb.data",
|
|
FT_BYTES, BASE_HEX, NULL, 0x0,
|
|
"Payload is application data", HFILL }},
|
|
|
|
{ &hf_usb_bmRequestType_direction,
|
|
{ "Direction", "usb.bmRequestType.direction", FT_BOOLEAN, 8,
|
|
TFS(&tfs_bmrequesttype_direction), USB_DIR_IN, "", HFILL }},
|
|
|
|
{ &hf_usb_bmRequestType_type,
|
|
{ "Type", "usb.bmRequestType.type", FT_UINT8, BASE_HEX,
|
|
VALS(bmrequesttype_type_vals), USB_TYPE_MASK, "", HFILL }},
|
|
|
|
{ &hf_usb_bmRequestType_recipient,
|
|
{ "Recipient", "usb.bmRequestType.recipient", FT_UINT8, BASE_HEX,
|
|
VALS(bmrequesttype_recipient_vals), 0x1f, "", HFILL }},
|
|
|
|
{ &hf_usb_bDescriptorType,
|
|
{ "bDescriptorType", "usb.bDescriptorType", FT_UINT8, BASE_HEX,
|
|
VALS(descriptor_type_vals), 0x0, "", HFILL }},
|
|
|
|
{ &hf_usb_descriptor_index,
|
|
{ "Descriptor Index", "usb.DescriptorIndex", FT_UINT8, BASE_HEX,
|
|
NULL, 0x0, "", HFILL }},
|
|
|
|
{ &hf_usb_language_id,
|
|
{ "Language Id", "usb.LanguageId", FT_UINT16, BASE_HEX,
|
|
VALS(usb_langid_vals), 0x0, "", HFILL }},
|
|
|
|
{ &hf_usb_bLength,
|
|
{ "bLength", "usb.bLength", FT_UINT8, BASE_DEC,
|
|
NULL, 0x0, "", HFILL }},
|
|
|
|
{ &hf_usb_bcdUSB,
|
|
{ "bcdUSB", "usb.bcdUSB", FT_UINT16, BASE_HEX,
|
|
NULL, 0x0, "", HFILL }},
|
|
|
|
{ &hf_usb_bDeviceClass,
|
|
{ "bDeviceClass", "usb.bDeviceClass", FT_UINT8, BASE_DEC,
|
|
NULL, 0x0, "", HFILL }},
|
|
|
|
{ &hf_usb_bDeviceSubClass,
|
|
{ "bDeviceSubClass", "usb.bDeviceSubClass", FT_UINT8, BASE_DEC,
|
|
NULL, 0x0, "", HFILL }},
|
|
|
|
{ &hf_usb_bDeviceProtocol,
|
|
{ "bDeviceProtocol", "usb.bDeviceProtocol", FT_UINT8, BASE_DEC,
|
|
NULL, 0x0, "", HFILL }},
|
|
|
|
{ &hf_usb_bMaxPacketSize0,
|
|
{ "bMaxPacketSize0", "usb.bMaxPacketSize0", FT_UINT8, BASE_DEC,
|
|
NULL, 0x0, "", HFILL }},
|
|
|
|
{ &hf_usb_idVendor,
|
|
{ "idVendor", "usb.idVendor", FT_UINT16, BASE_HEX,
|
|
NULL, 0x0, "", HFILL }},
|
|
|
|
{ &hf_usb_idProduct,
|
|
{ "idProduct", "usb.idProduct", FT_UINT16, BASE_HEX,
|
|
NULL, 0x0, "", HFILL }},
|
|
|
|
{ &hf_usb_bcdDevice,
|
|
{ "bcdDevice", "usb.bcdDevice", FT_UINT16, BASE_HEX,
|
|
NULL, 0x0, "", HFILL }},
|
|
|
|
{ &hf_usb_iManufacturer,
|
|
{ "iManufacturer", "usb.iManufacturer", FT_UINT8, BASE_DEC,
|
|
NULL, 0x0, "", HFILL }},
|
|
|
|
{ &hf_usb_iProduct,
|
|
{ "iProduct", "usb.iProduct", FT_UINT8, BASE_DEC,
|
|
NULL, 0x0, "", HFILL }},
|
|
|
|
{ &hf_usb_iSerialNumber,
|
|
{ "iSerialNumber", "usb.iSerialNumber", FT_UINT8, BASE_DEC,
|
|
NULL, 0x0, "", HFILL }},
|
|
|
|
{ &hf_usb_bNumConfigurations,
|
|
{ "bNumConfigurations", "usb.bNumConfigurations", FT_UINT8, BASE_DEC,
|
|
NULL, 0x0, "", HFILL }},
|
|
|
|
{ &hf_usb_wLANGID,
|
|
{ "wLANGID", "usb.wLANGID", FT_UINT16, BASE_HEX,
|
|
VALS(usb_langid_vals), 0x0, "", HFILL }},
|
|
|
|
{ &hf_usb_bString,
|
|
{ "bString", "usb.bString", FT_STRING, BASE_NONE,
|
|
NULL, 0x0, "", HFILL }},
|
|
|
|
{ &hf_usb_bInterfaceNumber,
|
|
{ "bInterfaceNumber", "usb.bInterfaceNumber", FT_UINT8, BASE_DEC,
|
|
NULL, 0x0, "", HFILL }},
|
|
|
|
{ &hf_usb_bAlternateSetting,
|
|
{ "bAlternateSetting","usb.bAlternateSetting", FT_UINT8, BASE_DEC,
|
|
NULL, 0x0, "", HFILL }},
|
|
|
|
{ &hf_usb_bNumEndpoints,
|
|
{ "bNumEndpoints","usb.bNumEndpoints", FT_UINT8, BASE_DEC,
|
|
NULL, 0x0, "", HFILL }},
|
|
|
|
{ &hf_usb_bInterfaceClass,
|
|
{ "bInterfaceClass", "usb.bInterfaceClass", FT_UINT8, BASE_HEX,
|
|
VALS(usb_interfaceclass_vals), 0x0, "", HFILL }},
|
|
|
|
{ &hf_usb_bInterfaceSubClass,
|
|
{ "bInterfaceSubClass", "usb.bInterfaceSubClass", FT_UINT8, BASE_HEX,
|
|
NULL, 0x0, "", HFILL }},
|
|
|
|
{ &hf_usb_bInterfaceProtocol,
|
|
{ "bInterfaceProtocol", "usb.bInterfaceProtocol", FT_UINT8, BASE_HEX,
|
|
NULL, 0x0, "", HFILL }},
|
|
|
|
{ &hf_usb_iInterface,
|
|
{ "iInterface", "usb.iInterface", FT_UINT8, BASE_DEC,
|
|
NULL, 0x0, "", HFILL }},
|
|
|
|
{ &hf_usb_bEndpointAddress,
|
|
{ "bEndpointAddress", "usb.bEndpointAddress", FT_UINT8, BASE_HEX,
|
|
NULL, 0x0, "", HFILL }},
|
|
|
|
{ &hf_usb_configuration_bmAttributes,
|
|
{ "Configuration bmAttributes", "usb.configuration.bmAttributes", FT_UINT8, BASE_HEX,
|
|
NULL, 0x0, "", HFILL }},
|
|
|
|
{ &hf_usb_bmAttributes,
|
|
{ "bmAttributes", "usb.bmAttributes", FT_UINT8, BASE_HEX,
|
|
NULL, 0x0, "", HFILL }},
|
|
|
|
{ &hf_usb_bEndpointAttributeTransfer,
|
|
{ "Transfertype", "usb.bmAttributes.transfer", FT_UINT8, BASE_HEX,
|
|
VALS(usb_bmAttributes_transfer_vals), 0x03, "", HFILL }},
|
|
|
|
{ &hf_usb_bEndpointAttributeSynchonisation,
|
|
{ "Synchronisationtype", "usb.bmAttributes.sync", FT_UINT8, BASE_HEX,
|
|
VALS(usb_bmAttributes_sync_vals), 0x0c, "", HFILL }},
|
|
|
|
{ &hf_usb_bEndpointAttributeBehaviour,
|
|
{ "Behaviourtype", "usb.bmAttributes.behaviour", FT_UINT8, BASE_HEX,
|
|
VALS(usb_bmAttributes_behaviour_vals), 0x30, "", HFILL }},
|
|
|
|
{ &hf_usb_wMaxPacketSize,
|
|
{ "wMaxPacketSize", "usb.wMaxPacketSize", FT_UINT16, BASE_DEC,
|
|
NULL, 0x0, "", HFILL }},
|
|
|
|
{ &hf_usb_bInterval,
|
|
{ "bInterval", "usb.bInterval", FT_UINT8, BASE_DEC,
|
|
NULL, 0x0, "", HFILL }},
|
|
|
|
{ &hf_usb_wTotalLength,
|
|
{ "wTotalLength", "usb.wTotalLength", FT_UINT16, BASE_DEC,
|
|
NULL, 0x0, "", HFILL }},
|
|
|
|
{ &hf_usb_bNumInterfaces,
|
|
{ "bNumInterfaces", "usb.bNumInterfaces", FT_UINT8, BASE_DEC,
|
|
NULL, 0x0, "", HFILL }},
|
|
|
|
{ &hf_usb_bConfigurationValue,
|
|
{ "bConfigurationValue", "usb.bConfigurationValue", FT_UINT8, BASE_DEC,
|
|
NULL, 0x0, "", HFILL }},
|
|
|
|
{ &hf_usb_iConfiguration,
|
|
{ "iConfiguration", "usb.iConfiguration", FT_UINT8, BASE_DEC,
|
|
NULL, 0x0, "", HFILL }},
|
|
|
|
{ &hf_usb_bMaxPower,
|
|
{ "bMaxPower", "usb.bMaxPower", FT_UINT8, BASE_DEC,
|
|
NULL, 0x0, "", HFILL }},
|
|
|
|
{ &hf_usb_configuration_legacy10buspowered,
|
|
{ "Must be 1", "usb.configuration.legacy10buspowered", FT_BOOLEAN, 8,
|
|
TFS(&tfs_mustbeone), 0x80, "Legacy USB 1.0 bus powered", HFILL }},
|
|
|
|
{ &hf_usb_configuration_selfpowered,
|
|
{ "Self-Powered", "usb.configuration.selfpowered", FT_BOOLEAN, 8,
|
|
TFS(&tfs_selfpowered), 0x40, "", HFILL }},
|
|
|
|
{ &hf_usb_configuration_remotewakeup,
|
|
{ "Remote Wakeup", "usb.configuration.remotewakeup", FT_BOOLEAN, 8,
|
|
TFS(&tfs_remotewakeup), 0x20, "", HFILL }},
|
|
|
|
{ &hf_usb_bEndpointAddress_number,
|
|
{ "Endpoint Number", "usb.bEndpointAddress.number", FT_UINT8, BASE_HEX,
|
|
NULL, 0x0f, "", HFILL }},
|
|
|
|
{ &hf_usb_bEndpointAddress_direction,
|
|
{ "Direction", "usb.bEndpointAddress.direction", FT_BOOLEAN, 8,
|
|
TFS(&tfs_endpoint_direction), 0x80, "", HFILL }},
|
|
|
|
{ &hf_usb_request_in,
|
|
{ "Request in", "usb.request_in", FT_FRAMENUM, BASE_NONE,
|
|
NULL, 0, "The request to this packet is in this packet", HFILL }},
|
|
|
|
{ &hf_usb_time,
|
|
{ "Time from request", "usb.time", FT_RELATIVE_TIME, BASE_NONE,
|
|
NULL, 0, "Time between Request and Response for USB cmds", HFILL }},
|
|
|
|
{ &hf_usb_response_in,
|
|
{ "Response in", "usb.response_in", FT_FRAMENUM, BASE_NONE,
|
|
NULL, 0, "The response to this packet is in this packet", HFILL }},
|
|
|
|
};
|
|
|
|
static gint *usb_subtrees[] = {
|
|
&usb_hdr,
|
|
&usb_setup_hdr,
|
|
&ett_usb_setup_bmrequesttype,
|
|
&ett_descriptor_device,
|
|
&ett_configuration_bmAttributes,
|
|
&ett_configuration_bEndpointAddress,
|
|
&ett_endpoint_bmAttributes
|
|
};
|
|
|
|
|
|
proto_usb = proto_register_protocol("USB", "USB", "usb");
|
|
proto_register_field_array(proto_usb, hf, array_length(hf));
|
|
proto_register_subtree_array(usb_subtrees, array_length(usb_subtrees));
|
|
|
|
usb_bulk_dissector_table = register_dissector_table("usb.bulk",
|
|
"USB bulk endpoint", FT_UINT8, BASE_DEC);
|
|
|
|
usb_control_dissector_table = register_dissector_table("usb.control",
|
|
"USB control endpoint", FT_UINT8, BASE_DEC);
|
|
|
|
usb_tap=register_tap("usb");
|
|
}
|
|
|
|
void
|
|
proto_reg_handoff_usb(void)
|
|
{
|
|
dissector_handle_t linux_usb_handle;
|
|
|
|
linux_usb_handle = create_dissector_handle(dissect_linux_usb, proto_usb);
|
|
|
|
dissector_add("wtap_encap", WTAP_ENCAP_USB_LINUX, linux_usb_handle);
|
|
}
|