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lsusb.c
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// SPDX-License-Identifier: GPL-2.0-or-later
/*
* lspci like utility for the USB bus
*
* Copyright (C) 1999-2001, 2003 Thomas Sailer ([email protected])
* Copyright (C) 2003-2005 David Brownell
*/
#include "config.h"
#include <stdint.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <locale.h>
#include <string.h>
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <stdarg.h>
#include <stdbool.h>
#ifdef HAVE_BYTESWAP_H
#include <byteswap.h>
#endif
#include <libusb.h>
#include <unistd.h>
#include "lsusb.h"
#include "names.h"
#include "sysfs.h"
#include "usbmisc.h"
#include "desc-defs.h"
#include "desc-dump.h"
#include <getopt.h>
#define le16_to_cpu(x) libusb_cpu_to_le16(libusb_cpu_to_le16(x))
/* from USB 2.0 spec and updates */
#define USB_DT_DEVICE_QUALIFIER 0x06
#define USB_DT_OTHER_SPEED_CONFIG 0x07
#define USB_DT_OTG 0x09
#define USB_DT_DEBUG 0x0a
#define USB_DT_INTERFACE_ASSOCIATION 0x0b
#define USB_DT_SECURITY 0x0c
#define USB_DT_KEY 0x0d
#define USB_DT_ENCRYPTION_TYPE 0x0e
#define USB_DT_BOS 0x0f
#define USB_DT_DEVICE_CAPABILITY 0x10
#define USB_DT_WIRELESS_ENDPOINT_COMP 0x11
#define USB_DT_WIRE_ADAPTER 0x21
#define USB_DT_RPIPE 0x22
#define USB_DT_RC_INTERFACE 0x23
#define USB_DT_SS_ENDPOINT_COMP 0x30
/* Device Capability Type Codes (Wireless USB spec and USB 3.0 bus spec) */
#define USB_DC_WIRELESS_USB 0x01
#define USB_DC_20_EXTENSION 0x02
#define USB_DC_SUPERSPEED 0x03
#define USB_DC_CONTAINER_ID 0x04
#define USB_DC_PLATFORM 0x05
#define USB_DC_SUPERSPEEDPLUS 0x0a
#define USB_DC_BILLBOARD 0x0d
#define USB_DC_BILLBOARD_ALT_MODE 0x0f
#define USB_DC_CONFIGURATION_SUMMARY 0x10
/* Conventional codes for class-specific descriptors. The convention is
* defined in the USB "Common Class" Spec (3.11). Individual class specs
* are authoritative for their usage, not the "common class" writeup.
*/
#define USB_DT_CS_DEVICE (LIBUSB_REQUEST_TYPE_CLASS | LIBUSB_DT_DEVICE)
#define USB_DT_CS_CONFIG (LIBUSB_REQUEST_TYPE_CLASS | LIBUSB_DT_CONFIG)
#define USB_DT_CS_STRING (LIBUSB_REQUEST_TYPE_CLASS | LIBUSB_DT_STRING)
#define USB_DT_CS_INTERFACE (LIBUSB_REQUEST_TYPE_CLASS | LIBUSB_DT_INTERFACE)
#define USB_DT_CS_ENDPOINT (LIBUSB_REQUEST_TYPE_CLASS | LIBUSB_DT_ENDPOINT)
#ifndef USB_CLASS_CCID
#define USB_CLASS_CCID 0x0b
#endif
#ifndef USB_CLASS_VIDEO
#define USB_CLASS_VIDEO 0x0e
#endif
#ifndef USB_CLASS_APPLICATION
#define USB_CLASS_APPLICATION 0xfe
#endif
#ifndef USB_AUDIO_CLASS_1
#define USB_AUDIO_CLASS_1 0x00
#endif
#ifndef USB_AUDIO_CLASS_2
#define USB_AUDIO_CLASS_2 0x20
#endif
/* USB DCD for Audio Devices Release 3.0: Section A.6, pp139 */
#ifndef USB_AUDIO_CLASS_3
#define USB_AUDIO_CLASS_3 0x30
#endif
#ifndef USB_VIDEO_PROTOCOL_15
#define USB_VIDEO_PROTOCOL_15 0x01
#endif
#define VERBLEVEL_DEFAULT 0 /* 0 gives lspci behaviour; 1, lsusb-0.9 */
#define CTRL_TIMEOUT (5*1000) /* milliseconds */
#define HUB_STATUS_BYTELEN 3 /* max 3 bytes status = hub + 23 ports */
#define BILLBOARD_MAX_NUM_ALT_MODE (0x34)
/* from WebUSB specification : https://wicg.github.io/webusb/ */
#define WEBUSB_GUID "{3408b638-09a9-47a0-8bfd-a0768815b665}"
#define WEBUSB_GET_URL 0x02
#define USB_DT_WEBUSB_URL 0x03
unsigned int verblevel = VERBLEVEL_DEFAULT;
static int do_report_desc = 1;
static const char * const encryption_type[] = {
"UNSECURE",
"WIRED",
"CCM_1",
"RSA_1",
"RESERVED"
};
static const char * const vconn_power[] = {
"1W",
"1.5W",
"2W",
"3W",
"4W",
"5W",
"6W",
"reserved"
};
static const char * const alt_mode_state[] = {
"Unspecified Error",
"Alternate Mode configuration not attempted",
"Alternate Mode configuration attempted but unsuccessful",
"Alternate Mode configuration successful"
};
static void dump_interface(libusb_device_handle *dev, const struct libusb_interface *interface);
static void dump_endpoint(libusb_device_handle *dev, const struct libusb_interface_descriptor *interface, const struct libusb_endpoint_descriptor *endpoint);
static void dump_audiocontrol_interface(libusb_device_handle *dev, const unsigned char *buf, int protocol);
static void dump_audiostreaming_interface(libusb_device_handle *dev, const unsigned char *buf, int protocol);
static void dump_midistreaming_interface(libusb_device_handle *dev, const unsigned char *buf);
static void dump_videocontrol_interface(libusb_device_handle *dev, const unsigned char *buf, int protocol);
static void dump_videostreaming_interface(const unsigned char *buf);
static void dump_dfu_interface(const unsigned char *buf);
static char *dump_comm_descriptor(libusb_device_handle *dev, const unsigned char *buf, char *indent);
static void dump_hid_device(libusb_device_handle *dev, const struct libusb_interface_descriptor *interface, const unsigned char *buf);
static void dump_printer_device(libusb_device_handle *dev, const struct libusb_interface_descriptor *interface, const unsigned char *buf);
static void dump_audiostreaming_endpoint(libusb_device_handle *dev, const unsigned char *buf, int protocol);
static void dump_midistreaming_endpoint(const unsigned char *buf);
static void dump_hub(const char *prefix, const unsigned char *p, int tt_type);
static void dump_ccid_device(const unsigned char *buf);
static void dump_billboard_device_capability_desc(libusb_device_handle *dev, unsigned char *buf);
/* ---------------------------------------------------------------------- */
static unsigned int convert_le_u32 (const unsigned char *buf)
{
return buf[0] | (buf[1] << 8) | (buf[2] << 16) | (buf[3] << 24);
}
static unsigned int convert_le_u16 (const unsigned char *buf)
{
return buf[0] | (buf[1] << 8);
}
/* ---------------------------------------------------------------------- */
/* workaround libusb API goofs: "byte" should never be sign extended;
* using "char" is trouble.
*/
static inline int typesafe_control_msg(libusb_device_handle *dev,
unsigned char requesttype, unsigned char request,
int value, int idx,
unsigned char *bytes, unsigned size, int timeout)
{
int ret = libusb_control_transfer(dev, requesttype, request, value,
idx, bytes, size, timeout);
return ret;
}
#define usb_control_msg typesafe_control_msg
static int get_protocol_string(char *buf, size_t size, uint8_t cls, uint8_t subcls, uint8_t proto)
{
const char *cp;
if (size < 1)
return 0;
*buf = 0;
if (!(cp = names_protocol(cls, subcls, proto)))
return 0;
return snprintf(buf, size, "%s", cp);
}
static int get_videoterminal_string(char *buf, size_t size, uint16_t termt)
{
const char *cp;
if (size < 1)
return 0;
*buf = 0;
if (!(cp = names_videoterminal(termt)))
return 0;
return snprintf(buf, size, "%s", cp);
}
static const char *get_guid(const unsigned char *buf)
{
static char guid[39];
/* NOTE: see RFC 4122 for more information about GUID/UUID
* structure. The first fields fields are historically big
* endian numbers, dating from Apollo mc68000 workstations.
*/
sprintf(guid, "{%02x%02x%02x%02x"
"-%02x%02x"
"-%02x%02x"
"-%02x%02x"
"-%02x%02x%02x%02x%02x%02x}",
buf[3], buf[2], buf[1], buf[0],
buf[5], buf[4],
buf[7], buf[6],
buf[8], buf[9],
buf[10], buf[11], buf[12], buf[13], buf[14], buf[15]);
return guid;
}
/* ---------------------------------------------------------------------- */
static void dump_bytes(const unsigned char *buf, unsigned int len)
{
unsigned int i;
for (i = 0; i < len; i++)
printf(" %02x", buf[i]);
printf("\n");
}
static void dump_junk(const unsigned char *buf, const char *indent, unsigned int len)
{
unsigned int i;
if (buf[0] <= len)
return;
printf("%sjunk at descriptor end:", indent);
for (i = len; i < buf[0]; i++)
printf(" %02x", buf[i]);
printf("\n");
}
/*
* General config descriptor dump
*/
static void dump_device(
libusb_device *dev,
struct libusb_device_descriptor *descriptor
)
{
char vendor[128], product[128];
char cls[128], subcls[128], proto[128];
char mfg[128] = {0}, prod[128] = {0}, serial[128] = {0};
char sysfs_name[PATH_MAX];
get_vendor_product_with_fallback(vendor, sizeof(vendor),
product, sizeof(product), dev);
get_class_string(cls, sizeof(cls), descriptor->bDeviceClass);
get_subclass_string(subcls, sizeof(subcls),
descriptor->bDeviceClass, descriptor->bDeviceSubClass);
get_protocol_string(proto, sizeof(proto), descriptor->bDeviceClass,
descriptor->bDeviceSubClass, descriptor->bDeviceProtocol);
if (get_sysfs_name(sysfs_name, sizeof(sysfs_name), dev) >= 0) {
read_sysfs_prop(mfg, sizeof(mfg), sysfs_name, "manufacturer");
read_sysfs_prop(prod, sizeof(prod), sysfs_name, "product");
read_sysfs_prop(serial, sizeof(serial), sysfs_name, "serial");
}
printf("Device Descriptor:\n"
" bLength %5u\n"
" bDescriptorType %5u\n"
" bcdUSB %2x.%02x\n"
" bDeviceClass %5u %s\n"
" bDeviceSubClass %5u %s\n"
" bDeviceProtocol %5u %s\n"
" bMaxPacketSize0 %5u\n"
" idVendor 0x%04x %s\n"
" idProduct 0x%04x %s\n"
" bcdDevice %2x.%02x\n"
" iManufacturer %5u %s\n"
" iProduct %5u %s\n"
" iSerial %5u %s\n"
" bNumConfigurations %5u\n",
descriptor->bLength, descriptor->bDescriptorType,
descriptor->bcdUSB >> 8, descriptor->bcdUSB & 0xff,
descriptor->bDeviceClass, cls,
descriptor->bDeviceSubClass, subcls,
descriptor->bDeviceProtocol, proto,
descriptor->bMaxPacketSize0,
descriptor->idVendor, vendor, descriptor->idProduct, product,
descriptor->bcdDevice >> 8, descriptor->bcdDevice & 0xff,
descriptor->iManufacturer, mfg,
descriptor->iProduct, prod,
descriptor->iSerialNumber, serial,
descriptor->bNumConfigurations);
}
static void dump_wire_adapter(const unsigned char *buf)
{
printf(" Wire Adapter Class Descriptor:\n"
" bLength %5u\n"
" bDescriptorType %5u\n"
" bcdWAVersion %2x.%02x\n"
" bNumPorts %5u\n"
" bmAttributes %5u\n"
" wNumRPRipes %5u\n"
" wRPipeMaxBlock %5u\n"
" bRPipeBlockSize %5u\n"
" bPwrOn2PwrGood %5u\n"
" bNumMMCIEs %5u\n"
" DeviceRemovable %5u\n",
buf[0], buf[1], buf[3], buf[2], buf[4], buf[5],
(buf[6] | buf[7] << 8),
(buf[8] | buf[9] << 8),
buf[10], buf[11], buf[12], buf[13]);
}
static void dump_rc_interface(const unsigned char *buf)
{
printf(" Radio Control Interface Class Descriptor:\n"
" bLength %5u\n"
" bDescriptorType %5u\n"
" bcdRCIVersion %2x.%02x\n",
buf[0], buf[1], buf[3], buf[2]);
}
static void dump_security(const unsigned char *buf)
{
printf(" Security Descriptor:\n"
" bLength %5u\n"
" bDescriptorType %5u\n"
" wTotalLength 0x%04x\n"
" bNumEncryptionTypes %5u\n",
buf[0], buf[1], (buf[3] << 8 | buf[2]), buf[4]);
}
static void dump_encryption_type(const unsigned char *buf)
{
int b_encryption_type = buf[2] & 0x4;
printf(" Encryption Type Descriptor:\n"
" bLength %5u\n"
" bDescriptorType %5u\n"
" bEncryptionType %5u %s\n"
" bEncryptionValue %5u\n"
" bAuthKeyIndex %5u\n",
buf[0], buf[1], buf[2],
encryption_type[b_encryption_type], buf[3], buf[4]);
}
static void dump_association(libusb_device_handle *dev, const unsigned char *buf)
{
char cls[128], subcls[128], proto[128];
char *func;
get_class_string(cls, sizeof(cls), buf[4]);
get_subclass_string(subcls, sizeof(subcls), buf[4], buf[5]);
get_protocol_string(proto, sizeof(proto), buf[4], buf[5], buf[6]);
func = get_dev_string(dev, buf[7]);
printf(" Interface Association:\n"
" bLength %5u\n"
" bDescriptorType %5u\n"
" bFirstInterface %5u\n"
" bInterfaceCount %5u\n"
" bFunctionClass %5u %s\n"
" bFunctionSubClass %5u %s\n"
" bFunctionProtocol %5u %s\n"
" iFunction %5u %s\n",
buf[0], buf[1],
buf[2], buf[3],
buf[4], cls,
buf[5], subcls,
buf[6], proto,
buf[7], func);
free(func);
}
static void dump_config(libusb_device_handle *dev, struct libusb_config_descriptor *config, unsigned speed)
{
char *cfg;
int i;
cfg = get_dev_string(dev, config->iConfiguration);
printf(" Configuration Descriptor:\n"
" bLength %5u\n"
" bDescriptorType %5u\n"
" wTotalLength 0x%04x\n"
" bNumInterfaces %5u\n"
" bConfigurationValue %5u\n"
" iConfiguration %5u %s\n"
" bmAttributes 0x%02x\n",
config->bLength, config->bDescriptorType,
le16_to_cpu(config->wTotalLength),
config->bNumInterfaces, config->bConfigurationValue,
config->iConfiguration,
cfg, config->bmAttributes);
free(cfg);
if (!(config->bmAttributes & 0x80))
printf(" (Missing must-be-set bit!)\n");
if (config->bmAttributes & 0x40)
printf(" Self Powered\n");
else
printf(" (Bus Powered)\n");
if (config->bmAttributes & 0x20)
printf(" Remote Wakeup\n");
if (config->bmAttributes & 0x10)
printf(" Battery Powered\n");
printf(" MaxPower %5umA\n", config->MaxPower * (speed >= 0x0300 ? 8 : 2));
/* avoid re-ordering or hiding descriptors for display */
if (config->extra_length) {
int size = config->extra_length;
const unsigned char *buf = config->extra;
while (size >= 2) {
if (buf[0] < 2) {
dump_junk(buf, " ", size);
break;
}
switch (buf[1]) {
case USB_DT_OTG:
/* handled separately */
break;
case USB_DT_INTERFACE_ASSOCIATION:
dump_association(dev, buf);
break;
case USB_DT_SECURITY:
dump_security(buf);
break;
case USB_DT_ENCRYPTION_TYPE:
dump_encryption_type(buf);
break;
default:
/* often a misplaced class descriptor */
printf(" ** UNRECOGNIZED: ");
dump_bytes(buf, buf[0]);
break;
}
size -= buf[0];
buf += buf[0];
}
}
for (i = 0 ; i < config->bNumInterfaces ; i++)
dump_interface(dev, &config->interface[i]);
}
static void dump_altsetting(libusb_device_handle *dev, const struct libusb_interface_descriptor *interface)
{
char cls[128], subcls[128], proto[128];
char *ifstr;
const unsigned char *buf;
unsigned size, i;
get_class_string(cls, sizeof(cls), interface->bInterfaceClass);
get_subclass_string(subcls, sizeof(subcls), interface->bInterfaceClass, interface->bInterfaceSubClass);
get_protocol_string(proto, sizeof(proto), interface->bInterfaceClass, interface->bInterfaceSubClass, interface->bInterfaceProtocol);
ifstr = get_dev_string(dev, interface->iInterface);
printf(" Interface Descriptor:\n"
" bLength %5u\n"
" bDescriptorType %5u\n"
" bInterfaceNumber %5u\n"
" bAlternateSetting %5u\n"
" bNumEndpoints %5u\n"
" bInterfaceClass %5u %s\n"
" bInterfaceSubClass %5u %s\n"
" bInterfaceProtocol %5u %s\n"
" iInterface %5u %s\n",
interface->bLength, interface->bDescriptorType, interface->bInterfaceNumber,
interface->bAlternateSetting, interface->bNumEndpoints, interface->bInterfaceClass, cls,
interface->bInterfaceSubClass, subcls, interface->bInterfaceProtocol, proto,
interface->iInterface, ifstr);
free(ifstr);
/* avoid re-ordering or hiding descriptors for display */
if (interface->extra_length) {
size = interface->extra_length;
buf = interface->extra;
while (size >= 2 * sizeof(uint8_t)) {
if (buf[0] < 2) {
dump_junk(buf, " ", size);
break;
}
switch (buf[1]) {
/* This is the polite way to provide class specific
* descriptors: explicitly tagged, using common class
* spec conventions.
*/
case USB_DT_CS_DEVICE:
case USB_DT_CS_INTERFACE:
switch (interface->bInterfaceClass) {
case LIBUSB_CLASS_AUDIO:
switch (interface->bInterfaceSubClass) {
case 1:
dump_audiocontrol_interface(dev, buf, interface->bInterfaceProtocol);
break;
case 2:
dump_audiostreaming_interface(dev, buf, interface->bInterfaceProtocol);
break;
case 3:
dump_midistreaming_interface(dev, buf);
break;
default:
goto dump;
}
break;
case LIBUSB_CLASS_COMM:
dump_comm_descriptor(dev, buf,
" ");
break;
case USB_CLASS_VIDEO:
switch (interface->bInterfaceSubClass) {
case 1:
dump_videocontrol_interface(dev, buf, interface->bInterfaceProtocol);
break;
case 2:
dump_videostreaming_interface(buf);
break;
default:
goto dump;
}
break;
case USB_CLASS_APPLICATION:
switch (interface->bInterfaceSubClass) {
case 1:
dump_dfu_interface(buf);
break;
default:
goto dump;
}
break;
case LIBUSB_CLASS_HID:
dump_hid_device(dev, interface, buf);
break;
case LIBUSB_CLASS_PRINTER:
dump_printer_device(dev, interface, buf);
break;
case USB_CLASS_CCID:
dump_ccid_device(buf);
break;
default:
goto dump;
}
break;
/* This is the ugly way: implicitly tagged,
* each class could redefine the type IDs.
*/
default:
switch (interface->bInterfaceClass) {
case LIBUSB_CLASS_HID:
dump_hid_device(dev, interface, buf);
break;
case USB_CLASS_CCID:
dump_ccid_device(buf);
break;
case 0xe0: /* wireless */
switch (interface->bInterfaceSubClass) {
case 1:
switch (interface->bInterfaceProtocol) {
case 2:
dump_rc_interface(buf);
break;
default:
goto dump;
}
break;
case 2:
dump_wire_adapter(buf);
break;
default:
goto dump;
}
break;
case LIBUSB_CLASS_AUDIO:
switch (buf[1]) {
/* MISPLACED DESCRIPTOR */
case USB_DT_CS_ENDPOINT:
switch (interface->bInterfaceSubClass) {
case 2:
dump_audiostreaming_endpoint(dev, buf, interface->bInterfaceProtocol);
break;
default:
goto dump;
}
break;
default:
goto dump;
}
break;
default:
/* ... not everything is class-specific */
switch (buf[1]) {
case USB_DT_OTG:
/* handled separately */
break;
case USB_DT_INTERFACE_ASSOCIATION:
dump_association(dev, buf);
break;
default:
dump:
/* often a misplaced class descriptor */
printf(" ** UNRECOGNIZED: ");
dump_bytes(buf, buf[0]);
break;
}
}
}
size -= buf[0];
buf += buf[0];
}
}
for (i = 0 ; i < interface->bNumEndpoints ; i++)
dump_endpoint(dev, interface, &interface->endpoint[i]);
}
static void dump_interface(libusb_device_handle *dev, const struct libusb_interface *interface)
{
int i;
for (i = 0; i < interface->num_altsetting; i++)
dump_altsetting(dev, &interface->altsetting[i]);
}
static void dump_pipe_desc(const unsigned char *buf)
{
static const char *pipe_name[] = {
"Reserved",
"Command pipe",
"Status pipe",
"Data-in pipe",
"Data-out pipe",
[5 ... 0xDF] = "Reserved",
[0xE0 ... 0xEF] = "Vendor specific",
[0xF0 ... 0xFF] = "Reserved",
};
if (buf[0] == 4 && buf[1] == 0x24) {
printf(" %s (0x%02x)\n", pipe_name[buf[2]], buf[2]);
} else {
printf(" INTERFACE CLASS: ");
dump_bytes(buf, buf[0]);
}
}
static void dump_endpoint(libusb_device_handle *dev, const struct libusb_interface_descriptor *interface, const struct libusb_endpoint_descriptor *endpoint)
{
static const char * const typeattr[] = {
"Control",
"Isochronous",
"Bulk",
"Interrupt"
};
static const char * const syncattr[] = {
"None",
"Asynchronous",
"Adaptive",
"Synchronous"
};
static const char * const usage[] = {
"Data",
"Feedback",
"Implicit feedback Data",
"(reserved)"
};
static const char * const hb[] = { "1x", "2x", "3x", "(?\?)" };
const unsigned char *buf;
unsigned size;
unsigned wmax = le16_to_cpu(endpoint->wMaxPacketSize);
printf(" Endpoint Descriptor:\n"
" bLength %5u\n"
" bDescriptorType %5u\n"
" bEndpointAddress 0x%02x EP %u %s\n"
" bmAttributes %5u\n"
" Transfer Type %s\n"
" Synch Type %s\n"
" Usage Type %s\n"
" wMaxPacketSize 0x%04x %s %d bytes\n"
" bInterval %5u\n",
endpoint->bLength,
endpoint->bDescriptorType,
endpoint->bEndpointAddress,
endpoint->bEndpointAddress & 0x0f,
(endpoint->bEndpointAddress & 0x80) ? "IN" : "OUT",
endpoint->bmAttributes,
typeattr[endpoint->bmAttributes & 3],
syncattr[(endpoint->bmAttributes >> 2) & 3],
usage[(endpoint->bmAttributes >> 4) & 3],
wmax, hb[(wmax >> 11) & 3], wmax & 0x7ff,
endpoint->bInterval);
/* only for audio endpoints */
if (endpoint->bLength == 9)
printf(" bRefresh %5u\n"
" bSynchAddress %5u\n",
endpoint->bRefresh, endpoint->bSynchAddress);
/* avoid re-ordering or hiding descriptors for display */
if (endpoint->extra_length) {
size = endpoint->extra_length;
buf = endpoint->extra;
while (size >= 2 * sizeof(uint8_t)) {
if (buf[0] < 2) {
dump_junk(buf, " ", size);
break;
}
switch (buf[1]) {
case USB_DT_CS_ENDPOINT:
if (interface->bInterfaceClass == 1 && interface->bInterfaceSubClass == 2)
dump_audiostreaming_endpoint(dev, buf, interface->bInterfaceProtocol);
else if (interface->bInterfaceClass == 1 && interface->bInterfaceSubClass == 3)
dump_midistreaming_endpoint(buf);
break;
case USB_DT_CS_INTERFACE:
/* MISPLACED DESCRIPTOR ... less indent */
switch (interface->bInterfaceClass) {
case LIBUSB_CLASS_COMM:
case LIBUSB_CLASS_DATA: /* comm data */
dump_comm_descriptor(dev, buf,
" ");
break;
case LIBUSB_CLASS_MASS_STORAGE:
dump_pipe_desc(buf);
break;
default:
printf(" INTERFACE CLASS: ");
dump_bytes(buf, buf[0]);
}
break;
case USB_DT_CS_DEVICE:
/* MISPLACED DESCRIPTOR ... less indent */
switch (interface->bInterfaceClass) {
case USB_CLASS_CCID:
dump_ccid_device(buf);
break;
default:
printf(" DEVICE CLASS: ");
dump_bytes(buf, buf[0]);
}
break;
case USB_DT_OTG:
/* handled separately */
break;
case USB_DT_INTERFACE_ASSOCIATION:
dump_association(dev, buf);
break;
case USB_DT_SS_ENDPOINT_COMP:
printf(" bMaxBurst %15u\n", buf[2]);
/* Print bulk streams info or isoc "Mult" */
if ((endpoint->bmAttributes & 3) == 2 &&
(buf[3] & 0x1f))
printf(" MaxStreams %14u\n",
(unsigned) 1 << buf[3]);
if ((endpoint->bmAttributes & 3) == 1 &&
(buf[3] & 0x3))
printf(" Mult %20u\n",
buf[3] & 0x3);
break;
default:
/* often a misplaced class descriptor */
printf(" ** UNRECOGNIZED: ");
dump_bytes(buf, buf[0]);
break;
}
size -= buf[0];
buf += buf[0];
}
}
}
static void dump_unit(unsigned int data, unsigned int len)
{
char *systems[5] = { "None", "SI Linear", "SI Rotation",
"English Linear", "English Rotation" };
char *units[5][8] = {
{ "None", "None", "None", "None", "None",
"None", "None", "None" },
{ "None", "Centimeter", "Gram", "Seconds", "Kelvin",
"Ampere", "Candela", "None" },
{ "None", "Radians", "Gram", "Seconds", "Kelvin",
"Ampere", "Candela", "None" },
{ "None", "Inch", "Slug", "Seconds", "Fahrenheit",
"Ampere", "Candela", "None" },
{ "None", "Degrees", "Slug", "Seconds", "Fahrenheit",
"Ampere", "Candela", "None" },
};
unsigned int i;
unsigned int sys;
int earlier_unit = 0;
/* First nibble tells us which system we're in. */
sys = data & 0xf;
data >>= 4;
if (sys > 4) {
if (sys == 0xf)
printf("System: Vendor defined, Unit: (unknown)\n");
else
printf("System: Reserved, Unit: (unknown)\n");
return;
} else {
printf("System: %s, Unit: ", systems[sys]);
}
for (i = 1 ; i < len * 2 ; i++) {
char nibble = data & 0xf;
data >>= 4;
if (nibble != 0) {
if (earlier_unit++ > 0)
printf("*");
printf("%s", units[sys][i]);
if (nibble != 1) {
/* This is a _signed_ nibble(!) */
int val = nibble & 0x7;
if (nibble & 0x08)
val = -((0x7 & ~val) + 1);
printf("^%d", val);
}
}
}
if (earlier_unit == 0)
printf("(None)");
printf("\n");
}
/* ---------------------------------------------------------------------- */
/*
* Audio Class descriptor dump
*/
static void dump_audio_subtype(libusb_device_handle *dev,
const char *name,
const struct desc * const desc[3],
const unsigned char *buf,
int protocol,
unsigned int indent)
{
static const char * const strings[] = { "UAC1", "UAC2", "UAC3" };
unsigned int idx = 0;
switch (protocol) {
case USB_AUDIO_CLASS_2: idx = 1; break;
case USB_AUDIO_CLASS_3: idx = 2; break;
}
printf("(%s)\n", name);
if (desc[idx] == NULL) {
printf("%*sWarning: %s descriptors are illegal for %s\n",
indent * 2, "", name, strings[idx]);
return;
}
/* Skip the first three bytes; those common fields have already
* been dumped. */
desc_dump(dev, desc[idx], buf + 3, buf[0] - 3, indent);
}
/* USB Audio Class subtypes */
enum uac_interface_subtype {
UAC_INTERFACE_SUBTYPE_AC_DESCRIPTOR_UNDEFINED = 0x00,
UAC_INTERFACE_SUBTYPE_HEADER = 0x01,
UAC_INTERFACE_SUBTYPE_INPUT_TERMINAL = 0x02,
UAC_INTERFACE_SUBTYPE_OUTPUT_TERMINAL = 0x03,
UAC_INTERFACE_SUBTYPE_EXTENDED_TERMINAL = 0x04,
UAC_INTERFACE_SUBTYPE_MIXER_UNIT = 0x05,
UAC_INTERFACE_SUBTYPE_SELECTOR_UNIT = 0x06,
UAC_INTERFACE_SUBTYPE_FEATURE_UNIT = 0x07,
UAC_INTERFACE_SUBTYPE_EFFECT_UNIT = 0x08,
UAC_INTERFACE_SUBTYPE_PROCESSING_UNIT = 0x09,
UAC_INTERFACE_SUBTYPE_EXTENSION_UNIT = 0x0a,
UAC_INTERFACE_SUBTYPE_CLOCK_SOURCE = 0x0b,
UAC_INTERFACE_SUBTYPE_CLOCK_SELECTOR = 0x0c,
UAC_INTERFACE_SUBTYPE_CLOCK_MULTIPLIER = 0x0d,
UAC_INTERFACE_SUBTYPE_SAMPLE_RATE_CONVERTER = 0x0e,
UAC_INTERFACE_SUBTYPE_CONNECTORS = 0x0f,
UAC_INTERFACE_SUBTYPE_POWER_DOMAIN = 0x10,
};
/*
* UAC1, UAC2, and UAC3 define bDescriptorSubtype differently for the
* AudioControl interface, so we need to do some ugly remapping:
*
* val | UAC1 | UAC2 | UAC3
* -----|-----------------|-----------------------|---------------------
* 0x00 | AC UNDEFINED | AC UNDEFINED | AC UNDEFINED
* 0x01 | HEADER | HEADER | HEADER
* 0x02 | INPUT_TERMINAL | INPUT_TERMINAL | INPUT_TERMINAL
* 0x03 | OUTPUT_TERMINAL | OUTPUT_TERMINAL | OUTPUT_TERMINAL
* 0x04 | MIXER_UNIT | MIXER_UNIT | EXTENDED_TERMINAL
* 0x05 | SELECTOR_UNIT | SELECTOR_UNIT | MIXER_UNIT
* 0x06 | FEATURE_UNIT | FEATURE_UNIT | SELECTOR_UNIT
* 0x07 | PROCESSING_UNIT | EFFECT_UNIT | FEATURE_UNIT
* 0x08 | EXTENSION_UNIT | PROCESSING_UNIT | EFFECT_UNIT
* 0x09 | - | EXTENSION_UNIT | PROCESSING_UNIT
* 0x0a | - | CLOCK_SOURCE | EXTENSION_UNIT
* 0x0b | - | CLOCK_SELECTOR | CLOCK_SOURCE
* 0x0c | - | CLOCK_MULTIPLIER | CLOCK_SELECTOR
* 0x0d | - | SAMPLE_RATE_CONVERTER | CLOCK_MULTIPLIER
* 0x0e | - | - | SAMPLE_RATE_CONVERTER
* 0x0f | - | - | CONNECTORS
* 0x10 | - | - | POWER_DOMAIN
*/
static enum uac_interface_subtype get_uac_interface_subtype(unsigned char c, int protocol)
{
switch (protocol) {
case USB_AUDIO_CLASS_1:
switch(c) {
case 0x04: return UAC_INTERFACE_SUBTYPE_MIXER_UNIT;
case 0x05: return UAC_INTERFACE_SUBTYPE_SELECTOR_UNIT;
case 0x06: return UAC_INTERFACE_SUBTYPE_FEATURE_UNIT;
case 0x07: return UAC_INTERFACE_SUBTYPE_PROCESSING_UNIT;
case 0x08: return UAC_INTERFACE_SUBTYPE_EXTENSION_UNIT;
}
break;
case USB_AUDIO_CLASS_2:
switch(c) {
case 0x04: return UAC_INTERFACE_SUBTYPE_MIXER_UNIT;
case 0x05: return UAC_INTERFACE_SUBTYPE_SELECTOR_UNIT;
case 0x06: return UAC_INTERFACE_SUBTYPE_FEATURE_UNIT;
case 0x07: return UAC_INTERFACE_SUBTYPE_EFFECT_UNIT;
case 0x08: return UAC_INTERFACE_SUBTYPE_PROCESSING_UNIT;
case 0x09: return UAC_INTERFACE_SUBTYPE_EXTENSION_UNIT;
case 0x0a: return UAC_INTERFACE_SUBTYPE_CLOCK_SOURCE;
case 0x0b: return UAC_INTERFACE_SUBTYPE_CLOCK_SELECTOR;
case 0x0c: return UAC_INTERFACE_SUBTYPE_CLOCK_MULTIPLIER;
case 0x0d: return UAC_INTERFACE_SUBTYPE_SAMPLE_RATE_CONVERTER;
}
break;
case USB_AUDIO_CLASS_3:
/* No mapping required. */
break;
default:
/* Unknown protocol */
break;
}
/* If the protocol was unknown, or the value was not known to require
* mapping, just return it unchanged. */
return c;
}
static void dump_audiocontrol_interface(libusb_device_handle *dev, const unsigned char *buf, int protocol)
{
enum uac_interface_subtype subtype;
if (buf[1] != USB_DT_CS_INTERFACE)
printf(" Warning: Invalid descriptor\n");
else if (buf[0] < 3)
printf(" Warning: Descriptor too short\n");
printf(" AudioControl Interface Descriptor:\n"
" bLength %5u\n"
" bDescriptorType %5u\n"
" bDescriptorSubtype %5u ",
buf[0], buf[1], buf[2]);
subtype = get_uac_interface_subtype(buf[2], protocol);
switch (subtype) {
case UAC_INTERFACE_SUBTYPE_HEADER:
dump_audio_subtype(dev, "HEADER", desc_audio_ac_header, buf, protocol, 4);
break;