teuf

#include <libusb.h>#include <glib.h>static void dump_line (const guchar *data, gsize line_len){    unsigned int i;    for (i = 0; i < line_len; i++) {        g_print ("%02x ", data[i]);    }     for (i = 0; i < line_len; i++) {        if (data[i] >= 0x20) {            g_print ("%c", data[i]);        } else {            g_print (".");        }    }     g_print ("\n");}static void hexdump (const guchar *data, gsize len){    unsigned int line;    const unsigned int BYTES_PER_LINE = 16;    for (line = 0; line < len/BYTES_PER_LINE; line++) {        dump_line (data, BYTES_PER_LINE);        data += BYTES_PER_LINE;    }    dump_line (data, len % BYTES_PER_LINE);}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) {        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 const guint USB_BUS_NUMBER = 2;static const guint USB_DEVICE_ADDRESS = 7;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_print ("Read %d bytes (i = %d)\n", bytes_read, i);        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);    return g_string_free (sysinfo_extended, FALSE);}int main (int argc, char **argv){    int success;    libusb_context *ctx;    libusb_device_handle *handle;    gchar *sysinfo_extended;    success = libusb_init (&ctx);    if (success < 0) {        g_print ("Couldn't get a libusb context\n");        return 1;    }    libusb_set_debug (ctx, 3);    handle = open_handle (ctx, USB_BUS_NUMBER, USB_DEVICE_ADDRESS);    if (handle == NULL) {        return 1;    }    sysinfo_extended = get_sysinfo_extended (handle);    g_print ("%s\n", sysinfo_extended);    libusb_close (handle);    libusb_exit (ctx);    return 0;}