gistfile1.txt

#include <sys/ioctl.h>
#include <errno.h>
#include <usb.h>
#include <linux/usbdevice_fs.h>
#include <stdio.h>

int inep;
int outep;
int intep;

void probeUsb(struct usb_device *dev) {
	int n = dev->config->interface->altsetting->bNumEndpoints;
	printf("Endpoints: %d\n", n);

	struct usb_endpoint_descriptor *ep = dev->config->interface->altsetting->endpoint;

	for (int i = 0; i < n; i++) {
		if (ep[i].bmAttributes == USB_ENDPOINT_TYPE_BULK) {
			if ((ep[i].bEndpointAddress & USB_ENDPOINT_DIR_MASK) ==
			    USB_ENDPOINT_DIR_MASK) {
					printf("Found inep: 0x%02x\n", ep[i].bEndpointAddress);
					inep = ep[i].bEndpointAddress;
			}
			if ((ep[i].bEndpointAddress & USB_ENDPOINT_DIR_MASK) == 0) {
					printf("Found outep: 0x%02x\n", ep[i].bEndpointAddress);
					outep = ep[i].bEndpointAddress;
			}
		} else if ((ep[i].bmAttributes == USB_ENDPOINT_TYPE_INTERRUPT) &&
			   ((ep[i].bEndpointAddress & USB_ENDPOINT_DIR_MASK) ==
			    USB_ENDPOINT_DIR_MASK)) {
				printf("Found intep: 0x%02x\n", ep[i].bEndpointAddress);
				intep = ep[i].bEndpointAddress;
		}
	}

	struct usb_dev_handle *devh = usb_open(dev);
	if (devh == NULL) {
		perror("usb_open() failure");
		return;
	} else {
		if (usb_set_configuration(devh, dev->config->bConfigurationValue)) {
			perror("usb_set_configuration() failure");
			usb_close(devh);
			return;
		}
		if (usb_claim_interface(devh, 0)) {
			perror("usb_claim_interface() failure");
			usb_close(devh);
			return;
		}
	}

	puts("In a connection");

	char buffer[512];

	// Try to send a command (?)
	char export[] = {0x0, 0x29, 0, 0};
	int x = usb_bulk_write(
		devh,
		outep,
		export, 4, 1000);

	printf("Sent %d bytes\n", x);

	x = usb_bulk_read(
		devh,
		intep, // Can't get anything on inep, 0 on intep
		buffer, 512, 1000);

	FILE *f = fopen("dump", "w");
	fwrite(buffer, x, 1, f);
	fclose(f);

	printf("Read %d bytes\n", x);

	usb_close(devh);
	puts("Disconnected");
}

int main() {
	usb_init();
	usb_find_busses();
	usb_find_devices();

	struct usb_bus *bus = usb_get_busses();
	struct usb_device *dev;
	while (bus != NULL) {
		dev = bus->devices;
		while (dev) {
			int ic = dev->config->interface->altsetting->bInterfaceClass;
			int vend = dev->descriptor.idVendor;
		
			printf("Trying %s\n", dev->filename);
			printf("Interface class: %X\n", ic);

			printf("Vendor: %X\n", vend);

			if (vend == 0x4CB && ic == 0xFF)
				probeUsb(dev);
			
			puts("----");

			dev = dev->next;
		}

		bus = bus->next;
	}
}