examples/testlibusb.c - third_party/libusb - Git at Google

 /*
 * Test suite program based of libusb-0.1-compat testlibusb
 * Copyright (c) 2013 Nathan Hjelm <hjelmn@mac.ccom>
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 */

 #include <stdio.h>
 #include <string.h>
 #include "libusb.h"

 #if defined(_MSC_VER) && (_MSC_VER < 1900)
 #define snprintf _snprintf
 #endif

 int verbose = 0;

 static void print_endpoint_comp(const struct libusb_ss_endpoint_companion_descriptor *ep_comp)
 {
 	printf("      USB 3.0 Endpoint Companion:\n");
 	printf("        bMaxBurst:        %d\n", ep_comp->bMaxBurst);
 	printf("        bmAttributes:     0x%02x\n", ep_comp->bmAttributes);
 	printf("        wBytesPerInterval: %d\n", ep_comp->wBytesPerInterval);
 }

 static void print_endpoint(const struct libusb_endpoint_descriptor *endpoint)
 {
 	int i, ret;

 	printf("      Endpoint:\n");
 	printf("        bEndpointAddress: %02xh\n", endpoint->bEndpointAddress);
 	printf("        bmAttributes:     %02xh\n", endpoint->bmAttributes);
 	printf("        wMaxPacketSize:   %d\n", endpoint->wMaxPacketSize);
 	printf("        bInterval:        %d\n", endpoint->bInterval);
 	printf("        bRefresh:         %d\n", endpoint->bRefresh);
 	printf("        bSynchAddress:    %d\n", endpoint->bSynchAddress);

 	for (i = 0; i < endpoint->extra_length;) {
 		if (LIBUSB_DT_SS_ENDPOINT_COMPANION == endpoint->extra[i + 1]) {
 			struct libusb_ss_endpoint_companion_descriptor *ep_comp;

 			ret = libusb_get_ss_endpoint_companion_descriptor(NULL, endpoint, &ep_comp);
 			if (LIBUSB_SUCCESS != ret) {
 				continue;
 			}

 			print_endpoint_comp(ep_comp);

 			libusb_free_ss_endpoint_companion_descriptor(ep_comp);
 		}

 		i += endpoint->extra[i];
 	}
 }

 static void print_altsetting(const struct libusb_interface_descriptor *interface)
 {
 	int i;

 	printf("    Interface:\n");
 	printf("      bInterfaceNumber:   %d\n", interface->bInterfaceNumber);
 	printf("      bAlternateSetting:  %d\n", interface->bAlternateSetting);
 	printf("      bNumEndpoints:      %d\n", interface->bNumEndpoints);
 	printf("      bInterfaceClass:    %d\n", interface->bInterfaceClass);
 	printf("      bInterfaceSubClass: %d\n", interface->bInterfaceSubClass);
 	printf("      bInterfaceProtocol: %d\n", interface->bInterfaceProtocol);
 	printf("      iInterface:         %d\n", interface->iInterface);

 	for (i = 0; i < interface->bNumEndpoints; i++)
 		print_endpoint(&interface->endpoint[i]);
 }

 static void print_2_0_ext_cap(struct libusb_usb_2_0_extension_descriptor *usb_2_0_ext_cap)
 {
 	printf("    USB 2.0 Extension Capabilities:\n");
 	printf("      bDevCapabilityType: %d\n", usb_2_0_ext_cap->bDevCapabilityType);
 	printf("      bmAttributes:       0x%x\n", usb_2_0_ext_cap->bmAttributes);
 }

 static void print_ss_usb_cap(struct libusb_ss_usb_device_capability_descriptor *ss_usb_cap)
 {
 	printf("    USB 3.0 Capabilities:\n");
 	printf("      bDevCapabilityType: %d\n", ss_usb_cap->bDevCapabilityType);
 	printf("      bmAttributes:       0x%x\n", ss_usb_cap->bmAttributes);
 	printf("      wSpeedSupported:    0x%x\n", ss_usb_cap->wSpeedSupported);
 	printf("      bFunctionalitySupport: %d\n", ss_usb_cap->bFunctionalitySupport);
 	printf("      bU1devExitLat:      %d\n", ss_usb_cap->bU1DevExitLat);
 	printf("      bU2devExitLat:      %d\n", ss_usb_cap->bU2DevExitLat);
 }

 static void print_bos(libusb_device_handle *handle)
 {
 	struct libusb_bos_descriptor *bos;
 	int ret;

 	ret = libusb_get_bos_descriptor(handle, &bos);
 	if (0 > ret) {
 		return;
 	}

 	printf("  Binary Object Store (BOS):\n");
 	printf("    wTotalLength:       %d\n", bos->wTotalLength);
 	printf("    bNumDeviceCaps:     %d\n", bos->bNumDeviceCaps);

 	if(bos->dev_capability[0]->bDevCapabilityType == LIBUSB_BT_USB_2_0_EXTENSION) {

 		struct libusb_usb_2_0_extension_descriptor *usb_2_0_extension;
 	        ret =  libusb_get_usb_2_0_extension_descriptor(NULL, bos->dev_capability[0],&usb_2_0_extension);
 	        if (0 > ret) {
 		        return;
 	        }

                 print_2_0_ext_cap(usb_2_0_extension);
                 libusb_free_usb_2_0_extension_descriptor(usb_2_0_extension);
         }

 	if(bos->dev_capability[0]->bDevCapabilityType == LIBUSB_BT_SS_USB_DEVICE_CAPABILITY) {

 	        struct libusb_ss_usb_device_capability_descriptor *dev_cap;
 		ret = libusb_get_ss_usb_device_capability_descriptor(NULL, bos->dev_capability[0],&dev_cap);
 	        if (0 > ret) {
 		        return;
 	        }

 	        print_ss_usb_cap(dev_cap);
 	        libusb_free_ss_usb_device_capability_descriptor(dev_cap);
         }

 	libusb_free_bos_descriptor(bos);
 }

 static void print_interface(const struct libusb_interface *interface)
 {
 	int i;

 	for (i = 0; i < interface->num_altsetting; i++)
 		print_altsetting(&interface->altsetting[i]);
 }

 static void print_configuration(struct libusb_config_descriptor *config)
 {
 	int i;

 	printf("  Configuration:\n");
 	printf("    wTotalLength:         %d\n", config->wTotalLength);
 	printf("    bNumInterfaces:       %d\n", config->bNumInterfaces);
 	printf("    bConfigurationValue:  %d\n", config->bConfigurationValue);
 	printf("    iConfiguration:       %d\n", config->iConfiguration);
 	printf("    bmAttributes:         %02xh\n", config->bmAttributes);
 	printf("    MaxPower:             %d\n", config->MaxPower);

 	for (i = 0; i < config->bNumInterfaces; i++)
 		print_interface(&config->interface[i]);
 }

 static int print_device(libusb_device *dev, int level)
 {
 	struct libusb_device_descriptor desc;
 	libusb_device_handle *handle = NULL;
 	char description[256];
 	char string[256];
 	int ret, i;

 	ret = libusb_get_device_descriptor(dev, &desc);
 	if (ret < 0) {
 		fprintf(stderr, "failed to get device descriptor");
 		return -1;
 	}

 	ret = libusb_open(dev, &handle);
 	if (LIBUSB_SUCCESS == ret) {
 		if (desc.iManufacturer) {
 			ret = libusb_get_string_descriptor_ascii(handle, desc.iManufacturer, string, sizeof(string));
 			if (ret > 0)
 				snprintf(description, sizeof(description), "%s - ", string);
 			else
 				snprintf(description, sizeof(description), "%04X - ",
 				desc.idVendor);
 		}
 		else
 			snprintf(description, sizeof(description), "%04X - ",
 			desc.idVendor);

 		if (desc.iProduct) {
 			ret = libusb_get_string_descriptor_ascii(handle, desc.iProduct, string, sizeof(string));
 			if (ret > 0)
 				snprintf(description + strlen(description), sizeof(description) -
 				strlen(description), "%s", string);
 			else
 				snprintf(description + strlen(description), sizeof(description) -
 				strlen(description), "%04X", desc.idProduct);
 		}
 		else
 			snprintf(description + strlen(description), sizeof(description) -
 			strlen(description), "%04X", desc.idProduct);
 	}
 	else {
 		snprintf(description, sizeof(description), "%04X - %04X",
 			desc.idVendor, desc.idProduct);
 	}

 	printf("%.*sDev (bus %d, device %d): %s\n", level * 2, "                    ",
 		libusb_get_bus_number(dev), libusb_get_device_address(dev), description);

 	if (handle && verbose) {
 		if (desc.iSerialNumber) {
 			ret = libusb_get_string_descriptor_ascii(handle, desc.iSerialNumber, string, sizeof(string));
 			if (ret > 0)
 				printf("%.*s  - Serial Number: %s\n", level * 2,
 				"                    ", string);
 		}
 	}

 	if (verbose) {
 		for (i = 0; i < desc.bNumConfigurations; i++) {
 			struct libusb_config_descriptor *config;
 			ret = libusb_get_config_descriptor(dev, i, &config);
 			if (LIBUSB_SUCCESS != ret) {
 				printf("  Couldn't retrieve descriptors\n");
 				continue;
 			}

 			print_configuration(config);

 			libusb_free_config_descriptor(config);
 		}

 		if (handle && desc.bcdUSB >= 0x0201) {
 			print_bos(handle);
 		}
 	}

 	if (handle)
 		libusb_close(handle);

 	return 0;
 }

 int main(int argc, char *argv[])
 {
 	libusb_device **devs;
 	ssize_t cnt;
 	int r, i;

 	if (argc > 1 && !strcmp(argv[1], "-v"))
 		verbose = 1;

 	r = libusb_init(NULL);
 	if (r < 0)
 		return r;

 	cnt = libusb_get_device_list(NULL, &devs);
 	if (cnt < 0)
 		return (int)cnt;

 	for (i = 0; devs[i]; ++i) {
 		print_device(devs[i], 0);
 	}

 	libusb_free_device_list(devs, 1);

 	libusb_exit(NULL);
 	return 0;
 }
	/*
	* Test suite program based of libusb-0.1-compat testlibusb
	* Copyright (c) 2013 Nathan Hjelm <hjelmn@mac.ccom>
	*
	* This library is free software; you can redistribute it and/or
	* modify it under the terms of the GNU Lesser General Public
	* License as published by the Free Software Foundation; either
	* version 2.1 of the License, or (at your option) any later version.
	*
	* This library is distributed in the hope that it will be useful,
	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	* Lesser General Public License for more details.
	*
	* You should have received a copy of the GNU Lesser General Public
	* License along with this library; if not, write to the Free Software
	* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
	*/

	#include <stdio.h>
	#include <string.h>
	#include "libusb.h"

	#if defined(_MSC_VER) && (_MSC_VER < 1900)
	#define snprintf _snprintf
	#endif

	int verbose = 0;

	static void print_endpoint_comp(const struct libusb_ss_endpoint_companion_descriptor *ep_comp)
	{
	printf(" USB 3.0 Endpoint Companion:\n");
	printf(" bMaxBurst: %d\n", ep_comp->bMaxBurst);
	printf(" bmAttributes: 0x%02x\n", ep_comp->bmAttributes);
	printf(" wBytesPerInterval: %d\n", ep_comp->wBytesPerInterval);
	}

	static void print_endpoint(const struct libusb_endpoint_descriptor *endpoint)
	{
	int i, ret;

	printf(" Endpoint:\n");
	printf(" bEndpointAddress: %02xh\n", endpoint->bEndpointAddress);
	printf(" bmAttributes: %02xh\n", endpoint->bmAttributes);
	printf(" wMaxPacketSize: %d\n", endpoint->wMaxPacketSize);
	printf(" bInterval: %d\n", endpoint->bInterval);
	printf(" bRefresh: %d\n", endpoint->bRefresh);
	printf(" bSynchAddress: %d\n", endpoint->bSynchAddress);

	for (i = 0; i < endpoint->extra_length;) {
	if (LIBUSB_DT_SS_ENDPOINT_COMPANION == endpoint->extra[i + 1]) {
	struct libusb_ss_endpoint_companion_descriptor *ep_comp;

	ret = libusb_get_ss_endpoint_companion_descriptor(NULL, endpoint, &ep_comp);
	if (LIBUSB_SUCCESS != ret) {
	continue;
	}

	print_endpoint_comp(ep_comp);

	libusb_free_ss_endpoint_companion_descriptor(ep_comp);
	}

	i += endpoint->extra[i];
	}
	}

	static void print_altsetting(const struct libusb_interface_descriptor *interface)
	{
	int i;

	printf(" Interface:\n");
	printf(" bInterfaceNumber: %d\n", interface->bInterfaceNumber);
	printf(" bAlternateSetting: %d\n", interface->bAlternateSetting);
	printf(" bNumEndpoints: %d\n", interface->bNumEndpoints);
	printf(" bInterfaceClass: %d\n", interface->bInterfaceClass);
	printf(" bInterfaceSubClass: %d\n", interface->bInterfaceSubClass);
	printf(" bInterfaceProtocol: %d\n", interface->bInterfaceProtocol);
	printf(" iInterface: %d\n", interface->iInterface);

	for (i = 0; i < interface->bNumEndpoints; i++)
	print_endpoint(&interface->endpoint[i]);
	}

	static void print_2_0_ext_cap(struct libusb_usb_2_0_extension_descriptor *usb_2_0_ext_cap)
	{
	printf(" USB 2.0 Extension Capabilities:\n");
	printf(" bDevCapabilityType: %d\n", usb_2_0_ext_cap->bDevCapabilityType);
	printf(" bmAttributes: 0x%x\n", usb_2_0_ext_cap->bmAttributes);
	}

	static void print_ss_usb_cap(struct libusb_ss_usb_device_capability_descriptor *ss_usb_cap)
	{
	printf(" USB 3.0 Capabilities:\n");
	printf(" bDevCapabilityType: %d\n", ss_usb_cap->bDevCapabilityType);
	printf(" bmAttributes: 0x%x\n", ss_usb_cap->bmAttributes);
	printf(" wSpeedSupported: 0x%x\n", ss_usb_cap->wSpeedSupported);
	printf(" bFunctionalitySupport: %d\n", ss_usb_cap->bFunctionalitySupport);
	printf(" bU1devExitLat: %d\n", ss_usb_cap->bU1DevExitLat);
	printf(" bU2devExitLat: %d\n", ss_usb_cap->bU2DevExitLat);
	}

	static void print_bos(libusb_device_handle *handle)
	{
	struct libusb_bos_descriptor *bos;
	int ret;

	ret = libusb_get_bos_descriptor(handle, &bos);
	if (0 > ret) {
	return;
	}

	printf(" Binary Object Store (BOS):\n");
	printf(" wTotalLength: %d\n", bos->wTotalLength);
	printf(" bNumDeviceCaps: %d\n", bos->bNumDeviceCaps);

	if(bos->dev_capability[0]->bDevCapabilityType == LIBUSB_BT_USB_2_0_EXTENSION) {

	struct libusb_usb_2_0_extension_descriptor *usb_2_0_extension;
	ret = libusb_get_usb_2_0_extension_descriptor(NULL, bos->dev_capability[0],&usb_2_0_extension);
	if (0 > ret) {
	return;
	}

	print_2_0_ext_cap(usb_2_0_extension);
	libusb_free_usb_2_0_extension_descriptor(usb_2_0_extension);
	}

	if(bos->dev_capability[0]->bDevCapabilityType == LIBUSB_BT_SS_USB_DEVICE_CAPABILITY) {

	struct libusb_ss_usb_device_capability_descriptor *dev_cap;
	ret = libusb_get_ss_usb_device_capability_descriptor(NULL, bos->dev_capability[0],&dev_cap);
	if (0 > ret) {
	return;
	}

	print_ss_usb_cap(dev_cap);
	libusb_free_ss_usb_device_capability_descriptor(dev_cap);
	}

	libusb_free_bos_descriptor(bos);
	}

	static void print_interface(const struct libusb_interface *interface)
	{
	int i;

	for (i = 0; i < interface->num_altsetting; i++)
	print_altsetting(&interface->altsetting[i]);
	}

	static void print_configuration(struct libusb_config_descriptor *config)
	{
	int i;

	printf(" Configuration:\n");
	printf(" wTotalLength: %d\n", config->wTotalLength);
	printf(" bNumInterfaces: %d\n", config->bNumInterfaces);
	printf(" bConfigurationValue: %d\n", config->bConfigurationValue);
	printf(" iConfiguration: %d\n", config->iConfiguration);
	printf(" bmAttributes: %02xh\n", config->bmAttributes);
	printf(" MaxPower: %d\n", config->MaxPower);

	for (i = 0; i < config->bNumInterfaces; i++)
	print_interface(&config->interface[i]);
	}

	static int print_device(libusb_device *dev, int level)
	{
	struct libusb_device_descriptor desc;
	libusb_device_handle *handle = NULL;
	char description[256];
	char string[256];
	int ret, i;

	ret = libusb_get_device_descriptor(dev, &desc);
	if (ret < 0) {
	fprintf(stderr, "failed to get device descriptor");
	return -1;
	}

	ret = libusb_open(dev, &handle);
	if (LIBUSB_SUCCESS == ret) {
	if (desc.iManufacturer) {
	ret = libusb_get_string_descriptor_ascii(handle, desc.iManufacturer, string, sizeof(string));
	if (ret > 0)
	snprintf(description, sizeof(description), "%s - ", string);
	else
	snprintf(description, sizeof(description), "%04X - ",
	desc.idVendor);
	}
	else
	snprintf(description, sizeof(description), "%04X - ",
	desc.idVendor);

	if (desc.iProduct) {
	ret = libusb_get_string_descriptor_ascii(handle, desc.iProduct, string, sizeof(string));
	if (ret > 0)
	snprintf(description + strlen(description), sizeof(description) -
	strlen(description), "%s", string);
	else
	snprintf(description + strlen(description), sizeof(description) -
	strlen(description), "%04X", desc.idProduct);
	}
	else
	snprintf(description + strlen(description), sizeof(description) -
	strlen(description), "%04X", desc.idProduct);
	}
	else {
	snprintf(description, sizeof(description), "%04X - %04X",
	desc.idVendor, desc.idProduct);
	}

	printf("%.sDev (bus %d, device %d): %s\n", level 2, " ",
	libusb_get_bus_number(dev), libusb_get_device_address(dev), description);

	if (handle && verbose) {
	if (desc.iSerialNumber) {
	ret = libusb_get_string_descriptor_ascii(handle, desc.iSerialNumber, string, sizeof(string));
	if (ret > 0)
	printf("%.s - Serial Number: %s\n", level 2,
	" ", string);
	}
	}

	if (verbose) {
	for (i = 0; i < desc.bNumConfigurations; i++) {
	struct libusb_config_descriptor *config;
	ret = libusb_get_config_descriptor(dev, i, &config);
	if (LIBUSB_SUCCESS != ret) {
	printf(" Couldn't retrieve descriptors\n");
	continue;
	}

	print_configuration(config);

	libusb_free_config_descriptor(config);
	}

	if (handle && desc.bcdUSB >= 0x0201) {
	print_bos(handle);
	}
	}

	if (handle)
	libusb_close(handle);

	return 0;
	}

	int main(int argc, char *argv[])
	{
	libusb_device **devs;
	ssize_t cnt;
	int r, i;

	if (argc > 1 && !strcmp(argv[1], "-v"))
	verbose = 1;

	r = libusb_init(NULL);
	if (r < 0)
	return r;

	cnt = libusb_get_device_list(NULL, &devs);
	if (cnt < 0)
	return (int)cnt;

	for (i = 0; devs[i]; ++i) {
	print_device(devs[i], 0);
	}

	libusb_free_device_list(devs, 1);

	libusb_exit(NULL);
	return 0;
	}