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#include <libusb.h>
#include <glib.h>
static int send_command (libusb_device_handle *handle, const guint value, const guint index, guchar *data, gsize len)
{
return libusb_control_transfer (handle, LIBUSB_ENDPOINT_IN | LIBUSB_REQUEST_TYPE_VENDOR | LIBUSB_RECIPIENT_DEVICE, 0x40, value, index, data, len, 0);
}
static libusb_device_handle *open_handle (libusb_context *ctx, const guint bus_number, const guint device_address)
{
libusb_device **list;
libusb_device *dev;
libusb_device_handle *handle;
unsigned int i;
int success;
int device_count;
device_count = libusb_get_device_list (ctx, &list);
if (device_count < 0) {
g_print ("Couldn't get device list\n");
return NULL;
}
dev = NULL;
for (i = 0; i < device_count; i++) {
if (libusb_get_bus_number (list[i]) != bus_number) {
continue;
}
if (libusb_get_device_address (list[i]) != device_address) {
continue;
}
dev = list[i];
break;
}
if (dev == NULL) {
libusb_free_device_list (list, 1);
g_print ("Couldn't find iPod\n");
return NULL;
}
success = libusb_open (dev, &handle);
libusb_free_device_list (list, 1);
if (success < 0) {
g_print ("Couldn't open usb device: %d\n", success);
return NULL;
}
return handle;
}
static gchar *get_sysinfo_extended (libusb_device_handle *handle)
{
GString *sysinfo_extended;
guchar data[0x1000];
unsigned int i;
sysinfo_extended = g_string_sized_new (0x8000);
for (i = 0; i < 0xffff; i++) {
int bytes_read;
bytes_read = send_command (handle, 0x02, i, data, sizeof (data));
if (bytes_read < 0) {
g_print ("error reading: %d (i = %d)\n", bytes_read, i);
return NULL;
}
g_string_append_len (sysinfo_extended, (gchar*)data, bytes_read);
if (bytes_read != sizeof (data)) {
/* assume short reads mean "end of file" */
break;
}
}
/*hexdump ((guchar *)sysinfo_extended->str, sysinfo_extended->len);*/
if (sysinfo_extended->len == 0) {
/* Nothing could be read from USB */
g_string_free(sysinfo_extended, TRUE);
return NULL;
}
return g_string_free (sysinfo_extended, FALSE);
}
G_GNUC_INTERNAL char *read_sysinfo_extended_from_usb (guint bus_number, guint device_address);
G_GNUC_INTERNAL char *read_sysinfo_extended_from_usb (guint bus_number, guint device_address)
{
int success;
libusb_context *ctx;
libusb_device_handle *handle;
gchar *sysinfo_extended;
success = libusb_init (&ctx);
if (success < 0) {
return NULL;
}
handle = open_handle (ctx, bus_number, device_address);
if (handle == NULL) {
libusb_exit (ctx);
return NULL;
}
sysinfo_extended = get_sysinfo_extended (handle);
libusb_close (handle);
libusb_exit (ctx);
return sysinfo_extended;
}
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