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nxdumptool/source/usb.c
Pablo Curiel 99429fd7b4 Bunch of changes. 
* Updated disclaimer in all source files.
* Improved signed payload (certificate, ticket) handling.
* Prefer strlen + strcmp over strncmp whenever possible.
* Simplify header file inclusions in source files.
* Simplify background gamecard thread logic.
* Properly close keys file handle if there's a key parse error.
* Update NcaKeyGeneration enum.
* Small changes to save.c/h.

Will probably have to revert some USB changes...
2020-07-03 05:31:22 -04:00

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/*
* usb.c
*
* Heavily based in usb_comms from libnx.
*
* Copyright (c) 2018-2020, Switchbrew, libnx contributors.
* Copyright (c) 2020, DarkMatterCore <pabloacurielz@gmail.com>.
*
* This file is part of nxdumptool (https://github.com/DarkMatterCore/nxdumptool).
*
* nxdumptool is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* nxdumptool is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "utils.h"
#include "usb.h"
#define USB_ABI_VERSION 1
#define USB_CMD_HEADER_MAGIC 0x4E584454 /* "NXDT" */
#define USB_TRANSFER_ALIGNMENT 0x1000 /* 4 KiB */
#define USB_TRANSFER_TIMEOUT 5 /* 5 seconds */
/* Type definitions. */
typedef struct {
RwLock lock, lock_in, lock_out;
bool initialized;
UsbDsInterface *interface;
UsbDsEndpoint *endpoint_in, *endpoint_out;
} usbDeviceInterface;
typedef enum {
UsbCommandType_StartSession = 0,
UsbCommandType_SendFileProperties = 1,
UsbCommandType_SendNspHeader = 2, ///< Needs to be implemented.
UsbCommandType_EndSession = 3
} UsbCommandType;
typedef struct {
u32 magic;
u32 cmd;
u32 cmd_block_size;
u8 reserved[0x4];
} UsbCommandHeader;
typedef struct {
u8 app_ver_major;
u8 app_ver_minor;
u8 app_ver_micro;
u8 abi_version;
u8 reserved[0xC];
} UsbCommandStartSession;
typedef struct {
u64 file_size;
u32 filename_length;
u8 reserved_1[0x4];
char filename[FS_MAX_PATH];
u8 reserved_2[0xF];
} UsbCommandSendFileProperties;
typedef enum {
///< Expected response code.
UsbStatusType_Success = 0,
///< Internal usage.
UsbStatusType_InvalidCommandSize = 1,
UsbStatusType_WriteCommandFailed = 2,
UsbStatusType_ReadStatusFailed = 3,
///< These can be returned by the host device.
UsbStatusType_InvalidMagicWord = 4,
UsbStatusType_UnsupportedCommand = 5,
UsbStatusType_UnsupportedAbiVersion = 6,
UsbStatusType_MalformedCommand = 7,
UsbStatusType_HostIoError = 8
} UsbStatusType;
typedef struct {
u32 magic;
u32 status;
u8 reserved[0x8];
} UsbStatus;
/* Global variables. */
static RwLock g_usbDeviceLock = {0};
static usbDeviceInterface g_usbDeviceInterface = {0};
static bool g_usbDeviceInterfaceInitialized = false;
static Event *g_usbStateChangeEvent = NULL;
static thrd_t g_usbDetectionThread;
static UEvent g_usbDetectionThreadExitEvent = {0}, g_usbTimeoutEvent = {0};
static bool g_usbDetectionThreadCreated = false, g_usbHostAvailable = false, g_usbSessionStarted = false;
static u8 *g_usbTransferBuffer = NULL;
static u64 g_usbTransferRemainingSize = 0;
/* Function prototypes. */
static bool usbCreateDetectionThread(void);
static void usbDestroyDetectionThread(void);
static int usbDetectionThreadFunc(void *arg);
static bool usbStartSession(void);
static void usbEndSession(void);
NX_INLINE void usbPrepareCommandHeader(u32 cmd, u32 cmd_block_size);
static u32 usbSendCommand(size_t cmd_size);
NX_INLINE void usbLogStatusDetail(u32 status);
NX_INLINE bool usbAllocateTransferBuffer(void);
NX_INLINE void usbFreeTransferBuffer(void);
static bool usbInitializeComms(void);
static void usbCloseComms(void);
static void usbFreeDeviceInterface(void);
NX_INLINE bool usbInitializeDeviceInterface(void);
static bool usbInitializeDeviceInterface5x(void);
static bool usbInitializeDeviceInterface1x(void);
NX_INLINE bool usbIsHostAvailable(void);
NX_INLINE bool usbRead(void *buf, size_t size);
NX_INLINE bool usbWrite(void *buf, size_t size);
static bool usbTransferData(void *buf, size_t size, UsbDsEndpoint *endpoint);
bool usbInitialize(void)
{
bool ret = false;
rwlockWriteLock(&g_usbDeviceLock);
/* Allocate USB transfer buffer */
if (!usbAllocateTransferBuffer())
{
LOGFILE("Failed to allocate memory for the USB transfer buffer!");
goto exit;
}
/* Initialize USB device interface */
if (!usbInitializeComms())
{
LOGFILE("Failed to initialize USB device interface!");
goto exit;
}
/* Retrieve USB state change kernel event */
g_usbStateChangeEvent = usbDsGetStateChangeEvent();
if (!g_usbStateChangeEvent)
{
LOGFILE("Failed to retrieve USB state change kernel event!");
goto exit;
}
/* Create usermode exit event */
ueventCreate(&g_usbDetectionThreadExitEvent, true);
/* Create usermode USB timeout event */
ueventCreate(&g_usbTimeoutEvent, true);
/* Create USB detection thread */
if (!(g_usbDetectionThreadCreated = usbCreateDetectionThread())) goto exit;
ret = true;
exit:
rwlockWriteUnlock(&g_usbDeviceLock);
return ret;
}
void usbExit(void)
{
rwlockWriteLock(&g_usbDeviceLock);
/* Destroy USB detection thread */
if (g_usbDetectionThreadCreated)
{
usbDestroyDetectionThread();
g_usbDetectionThreadCreated = false;
}
/* Clear USB state change kernel event */
g_usbStateChangeEvent = NULL;
/* Close USB device interface */
usbCloseComms();
/* Free USB transfer buffer */
usbFreeTransferBuffer();
rwlockWriteUnlock(&g_usbDeviceLock);
}
void *usbAllocatePageAlignedBuffer(size_t size)
{
if (!size) return NULL;
return memalign(USB_TRANSFER_ALIGNMENT, size);
}
bool usbIsReady(void)
{
rwlockWriteLock(&g_usbDeviceLock);
rwlockWriteLock(&(g_usbDeviceInterface.lock));
bool ret = (g_usbHostAvailable && g_usbSessionStarted);
rwlockWriteUnlock(&(g_usbDeviceInterface.lock));
rwlockWriteUnlock(&g_usbDeviceLock);
return ret;
}
bool usbSendFileProperties(u64 file_size, const char *filename)
{
rwlockWriteLock(&g_usbDeviceLock);
rwlockWriteLock(&(g_usbDeviceInterface.lock));
bool ret = false;
UsbCommandSendFileProperties *cmd_block = NULL;
size_t cmd_size = 0;
u32 status = UsbStatusType_Success;
u32 filename_length = 0;
if (!g_usbTransferBuffer || !g_usbDeviceInterfaceInitialized || !g_usbDeviceInterface.initialized || !g_usbHostAvailable || !g_usbSessionStarted || g_usbTransferRemainingSize > 0 || !filename || \
!(filename_length = (u32)strlen(filename)) || filename_length >= FS_MAX_PATH)
{
LOGFILE("Invalid parameters!");
goto exit;
}
usbPrepareCommandHeader(UsbCommandType_SendFileProperties, (u32)sizeof(UsbCommandSendFileProperties));
cmd_block = (UsbCommandSendFileProperties*)(g_usbTransferBuffer + sizeof(UsbCommandHeader));
memset(cmd_block, 0, sizeof(UsbCommandSendFileProperties));
cmd_block->file_size = file_size;
cmd_block->filename_length = filename_length;
sprintf(cmd_block->filename, "%s", filename);
cmd_size = (sizeof(UsbCommandHeader) + sizeof(UsbCommandSendFileProperties));
status = usbSendCommand(cmd_size);
if (status == UsbStatusType_Success)
{
ret = true;
g_usbTransferRemainingSize = file_size;
} else {
usbLogStatusDetail(status);
}
exit:
rwlockWriteUnlock(&(g_usbDeviceInterface.lock));
rwlockWriteUnlock(&g_usbDeviceLock);
return ret;
}
bool usbSendFileData(void *data, u64 data_size)
{
rwlockWriteLock(&g_usbDeviceLock);
rwlockWriteLock(&(g_usbDeviceInterface.lock));
bool ret = false;
void *buf = NULL;
UsbStatus *cmd_status = NULL;
if (!g_usbTransferBuffer || !g_usbDeviceInterfaceInitialized || !g_usbDeviceInterface.initialized || !g_usbHostAvailable || !g_usbSessionStarted || !g_usbTransferRemainingSize || !data || \
!data_size || data_size > USB_TRANSFER_BUFFER_SIZE || data_size > g_usbTransferRemainingSize)
{
LOGFILE("Invalid parameters!");
goto exit;
}
/* Optimization for buffers that already are page aligned */
if (IS_ALIGNED((u64)data, USB_TRANSFER_ALIGNMENT))
{
buf = data;
} else {
buf = g_usbTransferBuffer;
memcpy(buf, data, data_size);
}
if (!usbWrite(buf, data_size))
{
LOGFILE("Failed to write 0x%lX bytes long file data chunk!", data_size);
goto exit;
}
ret = true;
g_usbTransferRemainingSize -= data_size;
/* Check if this is the last chunk */
if (!g_usbTransferRemainingSize)
{
if (!usbRead(g_usbTransferBuffer, sizeof(UsbStatus)))
{
LOGFILE("Failed to read 0x%lX bytes long status block!", sizeof(UsbStatus));
ret = false;
goto exit;
}
cmd_status = (UsbStatus*)g_usbTransferBuffer;
if (cmd_status->magic != __builtin_bswap32(USB_CMD_HEADER_MAGIC))
{
LOGFILE("Invalid status block magic word!");
ret = false;
goto exit;
}
ret = (cmd_status->status == UsbStatusType_Success);
if (!ret) usbLogStatusDetail(cmd_status->status);
}
exit:
if (!ret) g_usbTransferRemainingSize = 0;
rwlockWriteUnlock(&(g_usbDeviceInterface.lock));
rwlockWriteUnlock(&g_usbDeviceLock);
return ret;
}
static bool usbCreateDetectionThread(void)
{
if (thrd_create(&g_usbDetectionThread, usbDetectionThreadFunc, NULL) != thrd_success)
{
LOGFILE("Failed to create USB detection thread!");
return false;
}
return true;
}
static void usbDestroyDetectionThread(void)
{
/* Signal the exit event to terminate the USB detection thread */
ueventSignal(&g_usbDetectionThreadExitEvent);
/* Wait for the USB detection thread to exit */
thrd_join(g_usbDetectionThread, NULL);
}
static int usbDetectionThreadFunc(void *arg)
{
(void)arg;
Result rc = 0;
int idx = 0;
Waiter usb_change_event_waiter = waiterForEvent(g_usbStateChangeEvent);
Waiter usb_timeout_event_waiter = waiterForUEvent(&g_usbTimeoutEvent);
Waiter exit_event_waiter = waiterForUEvent(&g_usbDetectionThreadExitEvent);
while(true)
{
/* Wait until an event is triggered */
rc = waitMulti(&idx, -1, usb_change_event_waiter, usb_timeout_event_waiter, exit_event_waiter);
if (R_FAILED(rc)) continue;
/* Exit event triggered */
if (idx == 2) break;
rwlockWriteLock(&g_usbDeviceLock);
rwlockWriteLock(&(g_usbDeviceInterface.lock));
/* Retrieve current USB connection status */
/* Only proceed if we're dealing with a status change */
g_usbHostAvailable = usbIsHostAvailable();
g_usbSessionStarted = false;
g_usbTransferRemainingSize = 0;
/* Start a USB session if we're connected to a host device and if the status change event was triggered */
/* This will essentially hang this thread and all other threads that call USB-related functions until a session is established */
if (g_usbHostAvailable && idx == 1) g_usbSessionStarted = usbStartSession();
rwlockWriteUnlock(&(g_usbDeviceInterface.lock));
rwlockWriteUnlock(&g_usbDeviceLock);
}
/* Close USB session if needed */
if (g_usbHostAvailable && g_usbSessionStarted) usbEndSession();
g_usbHostAvailable = g_usbSessionStarted = false;
g_usbTransferRemainingSize = 0;
return 0;
}
static bool usbStartSession(void)
{
UsbCommandStartSession *cmd_block = NULL;
size_t cmd_size = 0;
u32 status = UsbStatusType_Success;
if (!g_usbTransferBuffer || !g_usbDeviceInterfaceInitialized || !g_usbDeviceInterface.initialized)
{
LOGFILE("Invalid parameters!");
return false;
}
usbPrepareCommandHeader(UsbCommandType_StartSession, (u32)sizeof(UsbCommandStartSession));
cmd_block = (UsbCommandStartSession*)(g_usbTransferBuffer + sizeof(UsbCommandHeader));
memset(cmd_block, 0, sizeof(UsbCommandStartSession));
cmd_block->app_ver_major = VERSION_MAJOR;
cmd_block->app_ver_minor = VERSION_MINOR;
cmd_block->app_ver_micro = VERSION_MICRO;
cmd_block->abi_version = USB_ABI_VERSION;
cmd_size = (sizeof(UsbCommandHeader) + sizeof(UsbCommandStartSession));
status = usbSendCommand(cmd_size);
if (status != UsbStatusType_Success) usbLogStatusDetail(status);
return (status == UsbStatusType_Success);
}
static void usbEndSession(void)
{
if (!g_usbTransferBuffer || !g_usbDeviceInterfaceInitialized || !g_usbDeviceInterface.initialized || !g_usbHostAvailable || !g_usbSessionStarted)
{
LOGFILE("Invalid parameters!");
return;
}
usbPrepareCommandHeader(UsbCommandType_EndSession, 0);
if (!usbWrite(g_usbTransferBuffer, sizeof(UsbCommandHeader))) LOGFILE("Failed to send EndSession command!");
}
NX_INLINE void usbPrepareCommandHeader(u32 cmd, u32 cmd_block_size)
{
if (cmd > UsbCommandType_EndSession) return;
UsbCommandHeader *cmd_header = (UsbCommandHeader*)g_usbTransferBuffer;
memset(cmd_header, 0, sizeof(UsbCommandHeader));
cmd_header->magic = __builtin_bswap32(USB_CMD_HEADER_MAGIC);
cmd_header->cmd = cmd;
cmd_header->cmd_block_size = cmd_block_size;
}
static u32 usbSendCommand(size_t cmd_size)
{
u32 cmd = ((UsbCommandHeader*)g_usbTransferBuffer)->cmd;
UsbStatus *cmd_status = NULL;
if (cmd_size < sizeof(UsbCommandHeader) || cmd_size > USB_TRANSFER_BUFFER_SIZE)
{
LOGFILE("Invalid command size!");
return UsbStatusType_InvalidCommandSize;
}
if (!usbWrite(g_usbTransferBuffer, cmd_size))
{
LOGFILE("Failed to write 0x%lX bytes long block for type 0x%X command!", cmd_size, cmd);
return UsbStatusType_WriteCommandFailed;
}
if (!usbRead(g_usbTransferBuffer, sizeof(UsbStatus)))
{
LOGFILE("Failed to read 0x%lX bytes long status block for type 0x%X command!", sizeof(UsbStatus), cmd);
return UsbStatusType_ReadStatusFailed;
}
cmd_status = (UsbStatus*)g_usbTransferBuffer;
if (cmd_status->magic != __builtin_bswap32(USB_CMD_HEADER_MAGIC))
{
LOGFILE("Invalid status block magic word for type 0x%X command!", cmd);
return UsbStatusType_InvalidMagicWord;
}
return cmd_status->status;
}
NX_INLINE void usbLogStatusDetail(u32 status)
{
switch(status)
{
case UsbStatusType_Success:
case UsbStatusType_InvalidCommandSize:
case UsbStatusType_WriteCommandFailed:
case UsbStatusType_ReadStatusFailed:
break;
case UsbStatusType_InvalidMagicWord:
LOGFILE("Host replied with Invalid Magic Word status code.");
break;
case UsbStatusType_UnsupportedCommand:
LOGFILE("Host replied with Unsupported Command status code.");
break;
case UsbStatusType_UnsupportedAbiVersion:
LOGFILE("Host replied with Unsupported ABI Version status code.");
break;
case UsbStatusType_MalformedCommand:
LOGFILE("Host replied with Malformed Command status code.");
break;
case UsbStatusType_HostIoError:
LOGFILE("Host replied with I/O Error status code.");
break;
default:
LOGFILE("Unknown status code: 0x%X.", status);
break;
}
}
NX_INLINE bool usbAllocateTransferBuffer(void)
{
if (g_usbTransferBuffer) return true;
g_usbTransferBuffer = memalign(USB_TRANSFER_ALIGNMENT, USB_TRANSFER_BUFFER_SIZE);
return (g_usbTransferBuffer != NULL);
}
NX_INLINE void usbFreeTransferBuffer(void)
{
if (!g_usbTransferBuffer) return;
free(g_usbTransferBuffer);
g_usbTransferBuffer = NULL;
}
static bool usbInitializeComms(void)
{
Result rc = 0;
bool ret = (g_usbDeviceInterfaceInitialized && g_usbDeviceInterface.initialized);
if (ret) goto exit;
rc = usbDsInitialize();
if (R_FAILED(rc))
{
LOGFILE("usbDsInitialize failed! (0x%08X)", rc);
goto exit;
}
if (hosversionAtLeast(5,0,0))
{
u8 manufacturer = 0, product = 0, serial_number = 0;
static const u16 supported_langs[1] = { 0x0409 };
/* Send language descriptor */
rc = usbDsAddUsbLanguageStringDescriptor(NULL, supported_langs, sizeof(supported_langs) / sizeof(u16));
if (R_FAILED(rc)) LOGFILE("usbDsAddUsbLanguageStringDescriptor failed! (0x%08X)", rc);
/* Send manufacturer */
if (R_SUCCEEDED(rc))
{
rc = usbDsAddUsbStringDescriptor(&manufacturer, APP_AUTHOR);
if (R_FAILED(rc)) LOGFILE("usbDsAddUsbStringDescriptor failed! (0x%08X) (manufacturer)", rc);
}
/* Send product */
if (R_SUCCEEDED(rc))
{
rc = usbDsAddUsbStringDescriptor(&product, APP_TITLE);
if (R_FAILED(rc)) LOGFILE("usbDsAddUsbStringDescriptor failed! (0x%08X) (product)", rc);
}
/* Send serial number */
if (R_SUCCEEDED(rc))
{
rc = usbDsAddUsbStringDescriptor(&serial_number, APP_VERSION);
if (R_FAILED(rc)) LOGFILE("usbDsAddUsbStringDescriptor failed! (0x%08X) (serial number)", rc);
}
/* Send device descriptors */
struct usb_device_descriptor device_descriptor = {
.bLength = USB_DT_DEVICE_SIZE,
.bDescriptorType = USB_DT_DEVICE,
.bcdUSB = 0x0110,
.bDeviceClass = 0x00,
.bDeviceSubClass = 0x00,
.bDeviceProtocol = 0x00,
.bMaxPacketSize0 = 0x40,
.idVendor = 0x057e,
.idProduct = 0x3000,
.bcdDevice = 0x0100,
.iManufacturer = manufacturer,
.iProduct = product,
.iSerialNumber = serial_number,
.bNumConfigurations = 0x01
};
/* Full Speed is USB 1.1 */
if (R_SUCCEEDED(rc))
{
rc = usbDsSetUsbDeviceDescriptor(UsbDeviceSpeed_Full, &device_descriptor);
if (R_FAILED(rc)) LOGFILE("usbDsSetUsbDeviceDescriptor failed! (0x%08X) (USB 1.1)", rc);
}
/* High Speed is USB 2.0 */
device_descriptor.bcdUSB = 0x0200;
if (R_SUCCEEDED(rc))
{
rc = usbDsSetUsbDeviceDescriptor(UsbDeviceSpeed_High, &device_descriptor);
if (R_FAILED(rc)) LOGFILE("usbDsSetUsbDeviceDescriptor failed! (0x%08X) (USB 2.0)", rc);
}
/* Super Speed is USB 3.0 */
/* Upgrade packet size to 512 */
device_descriptor.bcdUSB = 0x0300;
device_descriptor.bMaxPacketSize0 = 0x09;
if (R_SUCCEEDED(rc))
{
rc = usbDsSetUsbDeviceDescriptor(UsbDeviceSpeed_Super, &device_descriptor);
if (R_FAILED(rc)) LOGFILE("usbDsSetUsbDeviceDescriptor failed! (0x%08X) (USB 3.0)", rc);
}
/* Define Binary Object Store */
u8 bos[0x16] = {
/* USB 1.1 */
0x05, /* .bLength */
USB_DT_BOS, /* .bDescriptorType */
0x16, 0x00, /* .wTotalLength */
0x02, /* .bNumDeviceCaps */
/* USB 2.0 */
0x07, /* .bLength */
USB_DT_DEVICE_CAPABILITY, /* .bDescriptorType */
0x02, /* .bDevCapabilityType */
0x02, 0x00, 0x00, 0x00, /* dev_capability_data */
/* USB 3.0 */
0x0A, /* .bLength */
USB_DT_DEVICE_CAPABILITY, /* .bDescriptorType */
0x03, /* .bDevCapabilityType */
0x00, 0x0E, 0x00, 0x03, 0x00, 0x00, 0x00
};
if (R_SUCCEEDED(rc))
{
rc = usbDsSetBinaryObjectStore(bos, sizeof(bos));
if (R_FAILED(rc)) LOGFILE("usbDsSetBinaryObjectStore failed! (0x%08X)", rc);
}
} else {
static const UsbDsDeviceInfo device_info = {
.idVendor = 0x057e,
.idProduct = 0x3000,
.bcdDevice = 0x0100,
.Manufacturer = APP_AUTHOR,
.Product = APP_TITLE,
.SerialNumber = APP_VERSION
};
/* Set VID, PID and BCD */
rc = usbDsSetVidPidBcd(&device_info);
if (R_FAILED(rc)) LOGFILE("usbDsSetVidPidBcd failed! (0x%08X)", rc);
}
if (R_FAILED(rc)) goto exit;
/* Initialize USB device interface */
rwlockWriteLock(&(g_usbDeviceInterface.lock));
rwlockWriteLock(&(g_usbDeviceInterface.lock_in));
rwlockWriteLock(&(g_usbDeviceInterface.lock_out));
bool dev_iface_init = usbInitializeDeviceInterface();
rwlockWriteUnlock(&(g_usbDeviceInterface.lock_out));
rwlockWriteUnlock(&(g_usbDeviceInterface.lock_in));
rwlockWriteUnlock(&(g_usbDeviceInterface.lock));
if (!dev_iface_init)
{
LOGFILE("Failed to initialize USB device interface!");
goto exit;
}
if (hosversionAtLeast(5,0,0))
{
rc = usbDsEnable();
if (R_FAILED(rc))
{
LOGFILE("usbDsEnable failed! (0x%08X)", rc);
goto exit;
}
}
ret = g_usbDeviceInterfaceInitialized = true;
exit:
if (!ret) usbCloseComms();
return ret;
}
static void usbCloseComms(void)
{
usbDsExit();
g_usbDeviceInterfaceInitialized = false;
usbFreeDeviceInterface();
}
static void usbFreeDeviceInterface(void)
{
rwlockWriteLock(&(g_usbDeviceInterface.lock));
if (!g_usbDeviceInterface.initialized) {
rwlockWriteUnlock(&(g_usbDeviceInterface.lock));
return;
}
rwlockWriteLock(&(g_usbDeviceInterface.lock_in));
rwlockWriteLock(&(g_usbDeviceInterface.lock_out));
g_usbDeviceInterface.initialized = false;
g_usbDeviceInterface.interface = NULL;
g_usbDeviceInterface.endpoint_in = NULL;
g_usbDeviceInterface.endpoint_out = NULL;
rwlockWriteUnlock(&(g_usbDeviceInterface.lock_out));
rwlockWriteUnlock(&(g_usbDeviceInterface.lock_in));
rwlockWriteUnlock(&(g_usbDeviceInterface.lock));
}
NX_INLINE bool usbInitializeDeviceInterface(void)
{
return (hosversionAtLeast(5,0,0) ? usbInitializeDeviceInterface5x() : usbInitializeDeviceInterface1x());
}
static bool usbInitializeDeviceInterface5x(void)
{
Result rc = 0;
struct usb_interface_descriptor interface_descriptor = {
.bLength = USB_DT_INTERFACE_SIZE,
.bDescriptorType = USB_DT_INTERFACE,
.bInterfaceNumber = 4,
.bNumEndpoints = 2,
.bInterfaceClass = USB_CLASS_VENDOR_SPEC,
.bInterfaceSubClass = USB_CLASS_VENDOR_SPEC,
.bInterfaceProtocol = USB_CLASS_VENDOR_SPEC,
};
struct usb_endpoint_descriptor endpoint_descriptor_in = {
.bLength = USB_DT_ENDPOINT_SIZE,
.bDescriptorType = USB_DT_ENDPOINT,
.bEndpointAddress = USB_ENDPOINT_IN,
.bmAttributes = USB_TRANSFER_TYPE_BULK,
.wMaxPacketSize = 0x40,
};
struct usb_endpoint_descriptor endpoint_descriptor_out = {
.bLength = USB_DT_ENDPOINT_SIZE,
.bDescriptorType = USB_DT_ENDPOINT,
.bEndpointAddress = USB_ENDPOINT_OUT,
.bmAttributes = USB_TRANSFER_TYPE_BULK,
.wMaxPacketSize = 0x40,
};
struct usb_ss_endpoint_companion_descriptor endpoint_companion = {
.bLength = sizeof(struct usb_ss_endpoint_companion_descriptor),
.bDescriptorType = USB_DT_SS_ENDPOINT_COMPANION,
.bMaxBurst = 0x0F,
.bmAttributes = 0x00,
.wBytesPerInterval = 0x00,
};
/* Enable device interface */
g_usbDeviceInterface.initialized = true;
/* Setup interface */
rc = usbDsRegisterInterface(&(g_usbDeviceInterface.interface));
if (R_FAILED(rc))
{
LOGFILE("usbDsRegisterInterface failed! (0x%08X)", rc);
return false;
}
interface_descriptor.bInterfaceNumber = g_usbDeviceInterface.interface->interface_index;
endpoint_descriptor_in.bEndpointAddress += (interface_descriptor.bInterfaceNumber + 1);
endpoint_descriptor_out.bEndpointAddress += (interface_descriptor.bInterfaceNumber + 1);
/* Full Speed config (USB 1.1) */
rc = usbDsInterface_AppendConfigurationData(g_usbDeviceInterface.interface, UsbDeviceSpeed_Full, &interface_descriptor, USB_DT_INTERFACE_SIZE);
if (R_FAILED(rc))
{
LOGFILE("usbDsInterface_AppendConfigurationData failed! (0x%08X) (USB 1.1) (interface)", rc);
return false;
}
rc = usbDsInterface_AppendConfigurationData(g_usbDeviceInterface.interface, UsbDeviceSpeed_Full, &endpoint_descriptor_in, USB_DT_ENDPOINT_SIZE);
if (R_FAILED(rc))
{
LOGFILE("usbDsInterface_AppendConfigurationData failed! (0x%08X) (USB 1.1) (in endpoint)", rc);
return false;
}
rc = usbDsInterface_AppendConfigurationData(g_usbDeviceInterface.interface, UsbDeviceSpeed_Full, &endpoint_descriptor_out, USB_DT_ENDPOINT_SIZE);
if (R_FAILED(rc))
{
LOGFILE("usbDsInterface_AppendConfigurationData failed! (0x%08X) (USB 1.1) (out endpoint)", rc);
return false;
}
/* High Speed config (USB 2.0) */
endpoint_descriptor_in.wMaxPacketSize = 0x200;
endpoint_descriptor_out.wMaxPacketSize = 0x200;
rc = usbDsInterface_AppendConfigurationData(g_usbDeviceInterface.interface, UsbDeviceSpeed_High, &interface_descriptor, USB_DT_INTERFACE_SIZE);
if (R_FAILED(rc))
{
LOGFILE("usbDsInterface_AppendConfigurationData failed! (0x%08X) (USB 2.0) (interface)", rc);
return false;
}
rc = usbDsInterface_AppendConfigurationData(g_usbDeviceInterface.interface, UsbDeviceSpeed_High, &endpoint_descriptor_in, USB_DT_ENDPOINT_SIZE);
if (R_FAILED(rc))
{
LOGFILE("usbDsInterface_AppendConfigurationData failed! (0x%08X) (USB 2.0) (in endpoint)", rc);
return false;
}
rc = usbDsInterface_AppendConfigurationData(g_usbDeviceInterface.interface, UsbDeviceSpeed_High, &endpoint_descriptor_out, USB_DT_ENDPOINT_SIZE);
if (R_FAILED(rc))
{
LOGFILE("usbDsInterface_AppendConfigurationData failed! (0x%08X) (USB 2.0) (out endpoint)", rc);
return false;
}
/* Super Speed config (USB 3.0) */
endpoint_descriptor_in.wMaxPacketSize = 0x400;
endpoint_descriptor_out.wMaxPacketSize = 0x400;
rc = usbDsInterface_AppendConfigurationData(g_usbDeviceInterface.interface, UsbDeviceSpeed_Super, &interface_descriptor, USB_DT_INTERFACE_SIZE);
if (R_FAILED(rc))
{
LOGFILE("usbDsInterface_AppendConfigurationData failed! (0x%08X) (USB 3.0) (interface)", rc);
return false;
}
rc = usbDsInterface_AppendConfigurationData(g_usbDeviceInterface.interface, UsbDeviceSpeed_Super, &endpoint_descriptor_in, USB_DT_ENDPOINT_SIZE);
if (R_FAILED(rc))
{
LOGFILE("usbDsInterface_AppendConfigurationData failed! (0x%08X) (USB 3.0) (in endpoint)", rc);
return false;
}
rc = usbDsInterface_AppendConfigurationData(g_usbDeviceInterface.interface, UsbDeviceSpeed_Super, &endpoint_companion, USB_DT_SS_ENDPOINT_COMPANION_SIZE);
if (R_FAILED(rc))
{
LOGFILE("usbDsInterface_AppendConfigurationData failed! (0x%08X) (USB 3.0) (in endpoint companion)", rc);
return false;
}
rc = usbDsInterface_AppendConfigurationData(g_usbDeviceInterface.interface, UsbDeviceSpeed_Super, &endpoint_descriptor_out, USB_DT_ENDPOINT_SIZE);
if (R_FAILED(rc))
{
LOGFILE("usbDsInterface_AppendConfigurationData failed! (0x%08X) (USB 3.0) (out endpoint)", rc);
return false;
}
rc = usbDsInterface_AppendConfigurationData(g_usbDeviceInterface.interface, UsbDeviceSpeed_Super, &endpoint_companion, USB_DT_SS_ENDPOINT_COMPANION_SIZE);
if (R_FAILED(rc))
{
LOGFILE("usbDsInterface_AppendConfigurationData failed! (0x%08X) (USB 3.0) (out endpoint companion)", rc);
return false;
}
/* Setup endpoints */
rc = usbDsInterface_RegisterEndpoint(g_usbDeviceInterface.interface, &(g_usbDeviceInterface.endpoint_in), endpoint_descriptor_in.bEndpointAddress);
if (R_FAILED(rc))
{
LOGFILE("usbDsInterface_RegisterEndpoint failed! (0x%08X) (in endpoint)", rc);
return false;
}
rc = usbDsInterface_RegisterEndpoint(g_usbDeviceInterface.interface, &(g_usbDeviceInterface.endpoint_out), endpoint_descriptor_out.bEndpointAddress);
if (R_FAILED(rc))
{
LOGFILE("usbDsInterface_RegisterEndpoint failed! (0x%08X) (out endpoint)", rc);
return false;
}
rc = usbDsInterface_EnableInterface(g_usbDeviceInterface.interface);
if (R_FAILED(rc))
{
LOGFILE("usbDsInterface_EnableInterface failed! (0x%08X)", rc);
return false;
}
return true;
}
static bool usbInitializeDeviceInterface1x(void)
{
Result rc = 0;
struct usb_interface_descriptor interface_descriptor = {
.bLength = USB_DT_INTERFACE_SIZE,
.bDescriptorType = USB_DT_INTERFACE,
.bInterfaceNumber = 0,
.bInterfaceClass = USB_CLASS_VENDOR_SPEC,
.bInterfaceSubClass = USB_CLASS_VENDOR_SPEC,
.bInterfaceProtocol = USB_CLASS_VENDOR_SPEC,
};
struct usb_endpoint_descriptor endpoint_descriptor_in = {
.bLength = USB_DT_ENDPOINT_SIZE,
.bDescriptorType = USB_DT_ENDPOINT,
.bEndpointAddress = USB_ENDPOINT_IN,
.bmAttributes = USB_TRANSFER_TYPE_BULK,
.wMaxPacketSize = 0x200,
};
struct usb_endpoint_descriptor endpoint_descriptor_out = {
.bLength = USB_DT_ENDPOINT_SIZE,
.bDescriptorType = USB_DT_ENDPOINT,
.bEndpointAddress = USB_ENDPOINT_OUT,
.bmAttributes = USB_TRANSFER_TYPE_BULK,
.wMaxPacketSize = 0x200,
};
/* Enable device interface */
g_usbDeviceInterface.initialized = true;
/* Setup interface */
rc = usbDsGetDsInterface(&(g_usbDeviceInterface.interface), &interface_descriptor, "usb");
if (R_FAILED(rc))
{
LOGFILE("usbDsGetDsInterface failed! (0x%08X)", rc);
return false;
}
/* Setup endpoints */
rc = usbDsInterface_GetDsEndpoint(g_usbDeviceInterface.interface, &(g_usbDeviceInterface.endpoint_in), &endpoint_descriptor_in);
if (R_FAILED(rc))
{
LOGFILE("usbDsInterface_GetDsEndpoint failed! (0x%08X) (in endpoint)", rc);
return false;
}
rc = usbDsInterface_GetDsEndpoint(g_usbDeviceInterface.interface, &(g_usbDeviceInterface.endpoint_out), &endpoint_descriptor_out);
if (R_FAILED(rc))
{
LOGFILE("usbDsInterface_GetDsEndpoint failed! (0x%08X) (out endpoint)", rc);
return false;
}
rc = usbDsInterface_EnableInterface(g_usbDeviceInterface.interface);
if (R_FAILED(rc))
{
LOGFILE("usbDsInterface_EnableInterface failed! (0x%08X)", rc);
return false;
}
return true;
}
NX_INLINE bool usbIsHostAvailable(void)
{
u32 state = 0;
Result rc = usbDsGetState(&state);
return (R_SUCCEEDED(rc) && state == 5);
}
NX_INLINE bool usbRead(void *buf, u64 size)
{
rwlockWriteLock(&(g_usbDeviceInterface.lock_out));
bool ret = usbTransferData(buf, size, g_usbDeviceInterface.endpoint_out);
rwlockWriteUnlock(&(g_usbDeviceInterface.lock_out));
return ret;
}
NX_INLINE bool usbWrite(void *buf, u64 size)
{
rwlockWriteLock(&(g_usbDeviceInterface.lock_in));
bool ret = usbTransferData(buf, size, g_usbDeviceInterface.endpoint_in);
if (ret) usbDsEndpoint_SetZlt(g_usbDeviceInterface.endpoint_in, true);
rwlockWriteUnlock(&(g_usbDeviceInterface.lock_in));
return ret;
}
static bool usbTransferData(void *buf, u64 size, UsbDsEndpoint *endpoint)
{
if (!buf || !IS_ALIGNED((u64)buf, USB_TRANSFER_ALIGNMENT) || !size || !endpoint)
{
LOGFILE("Invalid parameters!");
return false;
}
if (!usbIsHostAvailable())
{
LOGFILE("USB host unavailable!");
return false;
}
u32 urb_id = 0;
Result rc = 0;
UsbDsReportData report_data = {0};
u32 transferred_size = 0;
/* Start an USB transfer using the provided endpoint */
rc = usbDsEndpoint_PostBufferAsync(endpoint, buf, size, &urb_id);
if (R_FAILED(rc))
{
LOGFILE("usbDsEndpoint_PostBufferAsync failed! (0x%08X)", rc);
return false;
}
/* Wait for the transfer to finish */
/* If we're starting an USB transfer session, use an infinite timeout value to let the user start the companion app */
u64 timeout = (g_usbSessionStarted ? (USB_TRANSFER_TIMEOUT * (u64)1000000000) : UINT64_MAX);
rc = eventWait(&(endpoint->CompletionEvent), timeout);
eventClear(&(endpoint->CompletionEvent));
if (R_FAILED(rc))
{
/* Cancel transfer */
usbDsEndpoint_Cancel(endpoint);
/* Safety measure: wait until the completion event is triggered again before proceeding */
eventWait(&(endpoint->CompletionEvent), UINT64_MAX);
eventClear(&(endpoint->CompletionEvent));
/* Signal usermode USB timeout event if needed */
/* This will "reset" the USB connection by making the background thread wait until a new session is established */
if (g_usbSessionStarted) ueventSignal(&g_usbTimeoutEvent);
LOGFILE("eventWait failed! (0x%08X)", rc);
return false;
}
rc = usbDsEndpoint_GetReportData(endpoint, &report_data);
if (R_FAILED(rc))
{
LOGFILE("usbDsEndpoint_GetReportData failed! (0x%08X)", rc);
return false;
}
rc = usbDsParseReportData(&report_data, urb_id, NULL, &transferred_size);
if (R_FAILED(rc))
{
LOGFILE("usbDsParseReportData failed! (0x%08X)", rc);
return false;
}
if (transferred_size != size)
{
LOGFILE("USB transfer failed! Expected 0x%lX bytes, got 0x%X bytes.", size, transferred_size);
return false;
}
return true;
}
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