--- /dev/null
+/*
+ * windows backend for libusb 1.0
+ * Copyright (c) 2009-2010 Pete Batard <pbatard@gmail.com>
+ * With contributions from Michael Plante, Orin Eman et al.
+ * Parts of this code adapted from libusb-win32-v1 by Stephan Meyer
+ * Major code testing contribution by Xiaofan Chen
+ *
+ * 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
+ */
+
+// COMPILATION OPTIONS:
+// - Use HidD_(G/S)et(In/Out)putReport instead of (Read/Write)File for HID
+// Note that http://msdn.microsoft.com/en-us/library/ms789883.aspx:
+// "In addition, some devices might not support HidD_GetInputReport,
+// and will become unresponsive if this routine is used."
+// => Don't blame libusb if you can't read or write HID reports when the
+// option below is enabled.
+#define USE_HIDD_FOR_REPORTS
+// - Should libusb automatically claim (and release) the interfaces it requires?
+#define AUTO_CLAIM
+// - Forces instant overlapped completion on timeouts: can prevents extensive
+// wait in poll, after a timeout, but might affect subsequent API calls.
+// ***USE AT YOUR OWN RISKS***
+//#define FORCE_INSTANT_TIMEOUTS
+
+#include <config.h>
+#include <windows.h>
+#include <setupapi.h>
+#include <ctype.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <process.h>
+#include <stdio.h>
+#include <inttypes.h>
+#include <objbase.h> // for string to GUID conv. requires libole32.a
+
+#include <libusbi.h>
+#include "poll_windows.h"
+#include "windows_usb.h"
+
+// The following prevents "banned API" errors when using the MS's WDK OACR/Prefast
+#if defined(_PREFAST_)
+#pragma warning(disable:28719)
+#endif
+
+// The 2 macros below are used in conjunction with safe loops.
+#define LOOP_CHECK(fcall) { r=fcall; if (r != LIBUSB_SUCCESS) continue; }
+#define LOOP_BREAK(err) { r=err; continue; }
+
+extern void usbi_fd_notification(struct libusb_context *ctx);
+
+// Helper prototypes
+static int windows_get_active_config_descriptor(struct libusb_device *dev, unsigned char *buffer, size_t len, int *host_endian);
+static int windows_clock_gettime(int clk_id, struct timespec *tp);
+unsigned __stdcall windows_clock_gettime_threaded(void* param);
+// WinUSB API prototypes
+static int winusb_init(struct libusb_context *ctx);
+static int winusb_exit(void);
+static int winusb_open(struct libusb_device_handle *dev_handle);
+static void winusb_close(struct libusb_device_handle *dev_handle);
+static int winusb_claim_interface(struct libusb_device_handle *dev_handle, int iface);
+static int winusb_release_interface(struct libusb_device_handle *dev_handle, int iface);
+static int winusb_submit_control_transfer(struct usbi_transfer *itransfer);
+static int winusb_set_interface_altsetting(struct libusb_device_handle *dev_handle, int iface, int altsetting);
+static int winusb_submit_bulk_transfer(struct usbi_transfer *itransfer);
+static int winusb_clear_halt(struct libusb_device_handle *dev_handle, unsigned char endpoint);
+static int winusb_abort_transfers(struct usbi_transfer *itransfer);
+static int winusb_abort_control(struct usbi_transfer *itransfer);
+static int winusb_reset_device(struct libusb_device_handle *dev_handle);
+static int winusb_copy_transfer_data(struct usbi_transfer *itransfer, uint32_t io_size);
+// HID API prototypes
+static int hid_init(struct libusb_context *ctx);
+static int hid_exit(void);
+static int hid_open(struct libusb_device_handle *dev_handle);
+static void hid_close(struct libusb_device_handle *dev_handle);
+static int hid_claim_interface(struct libusb_device_handle *dev_handle, int iface);
+static int hid_release_interface(struct libusb_device_handle *dev_handle, int iface);
+static int hid_set_interface_altsetting(struct libusb_device_handle *dev_handle, int iface, int altsetting);
+static int hid_submit_control_transfer(struct usbi_transfer *itransfer);
+static int hid_submit_bulk_transfer(struct usbi_transfer *itransfer);
+static int hid_clear_halt(struct libusb_device_handle *dev_handle, unsigned char endpoint);
+static int hid_abort_transfers(struct usbi_transfer *itransfer);
+static int hid_reset_device(struct libusb_device_handle *dev_handle);
+static int hid_copy_transfer_data(struct usbi_transfer *itransfer, uint32_t io_size);
+// Composite API prototypes
+static int composite_init(struct libusb_context *ctx);
+static int composite_exit(void);
+static int composite_open(struct libusb_device_handle *dev_handle);
+static void composite_close(struct libusb_device_handle *dev_handle);
+static int composite_claim_interface(struct libusb_device_handle *dev_handle, int iface);
+static int composite_set_interface_altsetting(struct libusb_device_handle *dev_handle, int iface, int altsetting);
+static int composite_release_interface(struct libusb_device_handle *dev_handle, int iface);
+static int composite_submit_control_transfer(struct usbi_transfer *itransfer);
+static int composite_submit_bulk_transfer(struct usbi_transfer *itransfer);
+static int composite_submit_iso_transfer(struct usbi_transfer *itransfer);
+static int composite_clear_halt(struct libusb_device_handle *dev_handle, unsigned char endpoint);
+static int composite_abort_transfers(struct usbi_transfer *itransfer);
+static int composite_abort_control(struct usbi_transfer *itransfer);
+static int composite_reset_device(struct libusb_device_handle *dev_handle);
+static int composite_copy_transfer_data(struct usbi_transfer *itransfer, uint32_t io_size);
+
+
+// Global variables
+struct windows_hcd_priv* hcd_root = NULL;
+uint64_t hires_frequency, hires_ticks_to_ps;
+const uint64_t epoch_time = UINT64_C(116444736000000000); // 1970.01.01 00:00:000 in MS Filetime
+enum windows_version windows_version = WINDOWS_UNSUPPORTED;
+// Concurrency
+static int concurrent_usage = -1;
+#if defined(AUTO_CLAIM)
+usbi_mutex_t autoclaim_lock;
+#endif
+// Timer thread
+// NB: index 0 is for monotonic and 1 is for the thread exit event
+HANDLE timer_thread = NULL;
+HANDLE timer_mutex = NULL;
+struct timespec timer_tp;
+volatile LONG request_count[2] = {0, 1}; // last one must be > 0
+HANDLE timer_request[2] = { NULL, NULL };
+HANDLE timer_response = NULL;
+// API globals
+bool api_winusb_available = false;
+#define CHECK_WINUSB_AVAILABLE do { if (!api_winusb_available) return LIBUSB_ERROR_ACCESS; } while (0)
+bool api_hid_available = false;
+#define CHECK_HID_AVAILABLE do { if (!api_hid_available) return LIBUSB_ERROR_ACCESS; } while (0)
+
+
+/*
+ * Converts a WCHAR string to UTF8 (allocate returned string)
+ * Returns NULL on error
+ */
+static char* wchar_to_utf8(LPCWSTR wstr)
+{
+ int size;
+ char* str;
+
+ // Find out the size we need to allocate for our converted string
+ size = wchar_to_utf8_ms(wstr, NULL, 0);
+ if (size <= 1) // An empty string would be size 1
+ return NULL;
+
+ if ((str = malloc(size)) == NULL)
+ return NULL;
+
+ if (wchar_to_utf8_ms(wstr, str, size) != size) {
+ safe_free(str);
+ return NULL;
+ }
+
+ return str;
+}
+
+static inline BOOLEAN guid_eq(const GUID *guid1, const GUID *guid2) {
+ if ((guid1 != NULL) && (guid2 != NULL)) {
+ return (memcmp(guid1, guid2, sizeof(GUID)) == 0);
+ }
+ return false;
+}
+
+#if 0
+static char* guid_to_string(const GUID guid)
+{
+ static char guid_string[MAX_GUID_STRING_LENGTH];
+
+ sprintf(guid_string, "{%08X-%04X-%04X-%02X%02X-%02X%02X%02X%02X%02X%02X}",
+ (unsigned int)guid.Data1, guid.Data2, guid.Data3,
+ guid.Data4[0], guid.Data4[1], guid.Data4[2], guid.Data4[3],
+ guid.Data4[4], guid.Data4[5], guid.Data4[6], guid.Data4[7]);
+ return guid_string;
+}
+#endif
+
+/*
+ * Converts a windows error to human readable string
+ * uses retval as errorcode, or, if 0, use GetLastError()
+ */
+static char *windows_error_str(uint32_t retval)
+{
+static char err_string[ERR_BUFFER_SIZE];
+
+ DWORD size;
+ uint32_t errcode, format_errcode;
+
+ errcode = retval?retval:GetLastError();
+
+ safe_sprintf(err_string, ERR_BUFFER_SIZE, "[%d] ", errcode);
+
+ size = FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM, NULL, errcode,
+ MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), (LPTSTR) &err_string[strlen(err_string)],
+ ERR_BUFFER_SIZE, NULL);
+ if (size == 0)
+ {
+ format_errcode = GetLastError();
+ if (format_errcode)
+ safe_sprintf(err_string, ERR_BUFFER_SIZE,
+ "Windows error code %u (FormatMessage error code %u)", errcode, format_errcode);
+ else
+ safe_sprintf(err_string, ERR_BUFFER_SIZE, "Unknown error code %u", errcode);
+ }
+ return err_string;
+}
+
+/*
+ * Sanitize Microsoft's paths: convert to uppercase, add prefix and fix backslashes.
+ * Return an allocated sanitized string or NULL on error.
+ */
+static char* sanitize_path(const char* path)
+{
+ const char root_prefix[] = "\\\\.\\";
+ size_t j, size, root_size;
+ char* ret_path = NULL;
+ size_t add_root = 0;
+
+ if (path == NULL)
+ return NULL;
+
+ size = strlen(path)+1;
+ root_size = sizeof(root_prefix)-1;
+
+ // Microsoft indiscriminatly uses '\\?\', '\\.\', '##?#" or "##.#" for root prefixes.
+ if (!((size > 3) && (((path[0] == '\\') && (path[1] == '\\') && (path[3] == '\\')) ||
+ ((path[0] == '#') && (path[1] == '#') && (path[3] == '#'))))) {
+ add_root = root_size;
+ size += add_root;
+ }
+
+ if ((ret_path = (char*)calloc(size, 1)) == NULL)
+ return NULL;
+
+ safe_strncpy(&ret_path[add_root], size-add_root, path, strlen(path));
+
+ // Ensure consistancy with root prefix
+ for (j=0; j<root_size; j++)
+ ret_path[j] = root_prefix[j];
+
+ // Same goes for '\' and '#' after the root prefix. Ensure '#' is used
+ for(j=root_size; j<size; j++) {
+ ret_path[j] = (char)toupper((int)ret_path[j]); // Fix case too
+ if (ret_path[j] == '\\')
+ ret_path[j] = '#';
+ }
+
+ return ret_path;
+}
+
+/*
+ * Cfgmgr32 API functions
+ */
+static int Cfgmgr32_init(void)
+{
+ DLL_LOAD(Cfgmgr32.dll, CM_Get_Parent, TRUE);
+ DLL_LOAD(Cfgmgr32.dll, CM_Get_Child, TRUE);
+ DLL_LOAD(Cfgmgr32.dll, CM_Get_Sibling, TRUE);
+ DLL_LOAD(Cfgmgr32.dll, CM_Get_Device_IDA, TRUE);
+ DLL_LOAD(Cfgmgr32.dll, CM_Get_Device_IDW, TRUE);
+
+ return LIBUSB_SUCCESS;
+}
+
+/*
+ * enumerate interfaces for a specific GUID
+ *
+ * Parameters:
+ * dev_info: a pointer to a dev_info list
+ * dev_info_data: a pointer to an SP_DEVINFO_DATA to be filled (or NULL if not needed)
+ * guid: the GUID for which to retrieve interface details
+ * index: zero based index of the interface in the device info list
+ *
+ * Note: it is the responsibility of the caller to free the DEVICE_INTERFACE_DETAIL_DATA
+ * structure returned and call this function repeatedly using the same guid (with an
+ * incremented index starting at zero) until all interfaces have been returned.
+ */
+SP_DEVICE_INTERFACE_DETAIL_DATA *get_interface_details(struct libusb_context *ctx,
+ HDEVINFO *dev_info, SP_DEVINFO_DATA *dev_info_data, GUID guid, unsigned index)
+{
+ SP_DEVICE_INTERFACE_DATA dev_interface_data;
+ SP_DEVICE_INTERFACE_DETAIL_DATA *dev_interface_details = NULL;
+ DWORD size;
+
+ if (index <= 0) {
+ *dev_info = SetupDiGetClassDevs(&guid, NULL, NULL, DIGCF_PRESENT|DIGCF_DEVICEINTERFACE);
+ }
+ if (*dev_info == INVALID_HANDLE_VALUE) {
+ return NULL;
+ }
+
+ if (dev_info_data != NULL) {
+ dev_info_data->cbSize = sizeof(SP_DEVINFO_DATA);
+ if (!SetupDiEnumDeviceInfo(*dev_info, index, dev_info_data)) {
+ if (GetLastError() != ERROR_NO_MORE_ITEMS) {
+ usbi_err(ctx, "Could not obtain device info data for index %u: %s",
+ index, windows_error_str(0));
+ }
+ SetupDiDestroyDeviceInfoList(*dev_info);
+ *dev_info = INVALID_HANDLE_VALUE;
+ return NULL;
+ }
+ }
+
+ dev_interface_data.cbSize = sizeof(SP_DEVICE_INTERFACE_DATA);
+ if (!SetupDiEnumDeviceInterfaces(*dev_info, NULL, &guid, index, &dev_interface_data)) {
+ if (GetLastError() != ERROR_NO_MORE_ITEMS) {
+ usbi_err(ctx, "Could not obtain interface data for index %u: %s",
+ index, windows_error_str(0));
+ }
+ SetupDiDestroyDeviceInfoList(*dev_info);
+ *dev_info = INVALID_HANDLE_VALUE;
+ return NULL;
+ }
+
+ // Read interface data (dummy + actual) to access the device path
+ if (!SetupDiGetDeviceInterfaceDetail(*dev_info, &dev_interface_data, NULL, 0, &size, NULL)) {
+ // The dummy call should fail with ERROR_INSUFFICIENT_BUFFER
+ if (GetLastError() != ERROR_INSUFFICIENT_BUFFER) {
+ usbi_err(ctx, "could not access interface data (dummy) for index %u: %s",
+ index, windows_error_str(0));
+ goto err_exit;
+ }
+ }
+ else {
+ usbi_err(ctx, "program assertion failed - http://msdn.microsoft.com/en-us/library/ms792901.aspx is wrong.");
+ goto err_exit;
+ }
+
+ if ((dev_interface_details = malloc(size)) == NULL) {
+ usbi_err(ctx, "could not allocate interface data for index %u.", index);
+ goto err_exit;
+ }
+
+ dev_interface_details->cbSize = sizeof(SP_DEVICE_INTERFACE_DETAIL_DATA);
+ if (!SetupDiGetDeviceInterfaceDetail(*dev_info, &dev_interface_data,
+ dev_interface_details, size, &size, NULL)) {
+ usbi_err(ctx, "could not access interface data (actual) for index %u: %s",
+ index, windows_error_str(0));
+ }
+
+ return dev_interface_details;
+
+err_exit:
+ SetupDiDestroyDeviceInfoList(*dev_info);
+ *dev_info = INVALID_HANDLE_VALUE;
+ return NULL;
+}
+
+/*
+ * Populate the endpoints addresses of the device_priv interface helper structs
+ */
+static int windows_assign_endpoints(struct libusb_device *dev, int iface, int altsetting)
+{
+ int i, r;
+ struct windows_device_priv *priv = __device_priv(dev);
+ struct libusb_config_descriptor *conf_desc;
+ const struct libusb_interface_descriptor *if_desc;
+
+ r = libusb_get_config_descriptor(dev, 0, &conf_desc);
+ if (r != LIBUSB_SUCCESS) {
+ usbi_warn(NULL, "could not read config descriptor: error %d", r);
+ return r;
+ }
+
+ if_desc = &conf_desc->interface[iface].altsetting[altsetting];
+ safe_free(priv->usb_interface[iface].endpoint);
+
+ if (if_desc->bNumEndpoints == 0) {
+ usbi_dbg("no endpoints found for interface %d", iface);
+ return LIBUSB_SUCCESS;
+ }
+
+ priv->usb_interface[iface].endpoint = malloc(if_desc->bNumEndpoints);
+ if (priv->usb_interface[iface].endpoint == NULL) {
+ return LIBUSB_ERROR_NO_MEM;
+ }
+
+ priv->usb_interface[iface].nb_endpoints = if_desc->bNumEndpoints;
+ for (i=0; i<if_desc->bNumEndpoints; i++) {
+ priv->usb_interface[iface].endpoint[i] = if_desc->endpoint[i].bEndpointAddress;
+ usbi_dbg("(re)assigned endpoint %02X to interface %d", priv->usb_interface[iface].endpoint[i], iface);
+ }
+ libusb_free_config_descriptor(conf_desc);
+
+ return LIBUSB_SUCCESS;
+}
+
+// Lookup for a match in the list of API driver names
+bool is_api_driver(char* driver, uint8_t api)
+{
+ uint8_t i;
+ for (i=0; i<usb_api_backend[api].nb_driver_names; i++) {
+ if (safe_strcmp(driver, usb_api_backend[api].driver_name_list[i]) == 0) {
+ return true;
+ }
+ }
+ return false;
+}
+
+/*
+ * auto-claiming and auto-release helper functions
+ */
+#if defined(AUTO_CLAIM)
+static int auto_claim(struct libusb_transfer *transfer, int *interface_number, int api_type)
+{
+ struct libusb_context *ctx = DEVICE_CTX(transfer->dev_handle->dev);
+ struct windows_device_handle_priv *handle_priv = __device_handle_priv(
+ transfer->dev_handle);
+ struct windows_device_priv *priv = __device_priv(transfer->dev_handle->dev);
+ int current_interface = *interface_number;
+ int r = LIBUSB_SUCCESS;
+
+ switch(api_type) {
+ case USB_API_WINUSB:
+ case USB_API_HID:
+ break;
+ default:
+ return LIBUSB_ERROR_INVALID_PARAM;
+ }
+
+ usbi_mutex_lock(&autoclaim_lock);
+ if (current_interface < 0) // No serviceable interface was found
+ {
+ for (current_interface=0; current_interface<USB_MAXINTERFACES; current_interface++) {
+ // Must claim an interface of the same API type
+ if ( (priv->usb_interface[current_interface].apib == &usb_api_backend[api_type])
+ && (libusb_claim_interface(transfer->dev_handle, current_interface) == LIBUSB_SUCCESS) ) {
+ usbi_dbg("auto-claimed interface %d for control request", current_interface);
+ if (handle_priv->autoclaim_count[current_interface] != 0) {
+ usbi_warn(ctx, "program assertion failed - autoclaim_count was nonzero");
+ }
+ handle_priv->autoclaim_count[current_interface]++;
+ break;
+ }
+ }
+ if (current_interface == USB_MAXINTERFACES) {
+ usbi_err(ctx, "could not auto-claim any interface");
+ r = LIBUSB_ERROR_NOT_FOUND;
+ }
+ } else {
+ // If we have a valid interface that was autoclaimed, we must increment
+ // its autoclaim count so that we can prevent an early release.
+ if (handle_priv->autoclaim_count[current_interface] != 0) {
+ handle_priv->autoclaim_count[current_interface]++;
+ }
+ }
+ usbi_mutex_unlock(&autoclaim_lock);
+
+ *interface_number = current_interface;
+ return r;
+
+}
+
+static void auto_release(struct usbi_transfer *itransfer)
+{
+ struct windows_transfer_priv *transfer_priv = usbi_transfer_get_os_priv(itransfer);
+ struct libusb_transfer *transfer = __USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer);
+ libusb_device_handle *dev_handle = transfer->dev_handle;
+ struct windows_device_handle_priv* handle_priv = __device_handle_priv(dev_handle);
+ int r;
+
+ usbi_mutex_lock(&autoclaim_lock);
+ if (handle_priv->autoclaim_count[transfer_priv->interface_number] > 0) {
+ handle_priv->autoclaim_count[transfer_priv->interface_number]--;
+ if (handle_priv->autoclaim_count[transfer_priv->interface_number] == 0) {
+ r = libusb_release_interface(dev_handle, transfer_priv->interface_number);
+ if (r == LIBUSB_SUCCESS) {
+ usbi_dbg("auto-released interface %d", transfer_priv->interface_number);
+ } else {
+ usbi_dbg("failed to auto-release interface %d (%s)",
+ transfer_priv->interface_number, libusb_strerror(r));
+ }
+ }
+ }
+ usbi_mutex_unlock(&autoclaim_lock);
+}
+#endif
+
+
+/*
+ * init: libusb backend init function
+ *
+ * This function enumerates the HCDs (Host Controller Drivers) and populates our private HCD list
+ * In our implementation, we equate Windows' "HCD" to LibUSB's "bus". Note that bus is zero indexed.
+ * HCDs are not expected to change after init (might not hold true for hot pluggable USB PCI card?)
+ */
+static int windows_init(struct libusb_context *ctx)
+{
+ HDEVINFO dev_info;
+ SP_DEVICE_INTERFACE_DETAIL_DATA *dev_interface_details = NULL;
+ GUID guid;
+ libusb_bus_t bus;
+ int i, r = LIBUSB_ERROR_OTHER;
+ OSVERSIONINFO os_version;
+ HANDLE semaphore;
+ struct windows_hcd_priv** _hcd_cur;
+ TCHAR sem_name[11+1+8]; // strlen(libusb_init)+'\0'+(32-bit hex PID)
+
+ sprintf(sem_name, "libusb_init%08X", (unsigned int)GetCurrentProcessId()&0xFFFFFFFF);
+ semaphore = CreateSemaphore(NULL, 1, 1, sem_name);
+ if (semaphore == NULL) {
+ usbi_err(ctx, "could not create semaphore: %s", windows_error_str(0));
+ return LIBUSB_ERROR_NO_MEM;
+ }
+
+ // A successful wait brings our semaphore count to 0 (unsignaled)
+ // => any concurent wait stalls until the semaphore's release
+ if (WaitForSingleObject(semaphore, INFINITE) != WAIT_OBJECT_0) {
+ usbi_err(ctx, "failure to access semaphore: %s", windows_error_str(0));
+ CloseHandle(semaphore);
+ return LIBUSB_ERROR_NO_MEM;
+ }
+
+ // NB: concurrent usage supposes that init calls are equally balanced with
+ // exit calls. If init is called more than exit, we will not exit properly
+ if ( ++concurrent_usage == 0 ) { // First init?
+ _hcd_cur = &hcd_root;
+
+ // Detect OS version
+ memset(&os_version, 0, sizeof(OSVERSIONINFO));
+ os_version.dwOSVersionInfoSize = sizeof(OSVERSIONINFO);
+ windows_version = WINDOWS_UNSUPPORTED;
+ if ((GetVersionEx(&os_version) != 0) && (os_version.dwPlatformId == VER_PLATFORM_WIN32_NT)) {
+ if ((os_version.dwMajorVersion == 5) && (os_version.dwMinorVersion == 1)) {
+ windows_version = WINDOWS_XP;
+ } else if ((os_version.dwMajorVersion == 5) && (os_version.dwMinorVersion == 2)) {
+ windows_version = WINDOWS_2003; // also includes XP 64
+ } else if (os_version.dwMajorVersion >= 6) {
+ windows_version = WINDOWS_VISTA_AND_LATER;
+ }
+ }
+ if (windows_version == WINDOWS_UNSUPPORTED) {
+ usbi_err(ctx, "This version of Windows is NOT supported");
+ r = LIBUSB_ERROR_NOT_SUPPORTED;
+ goto init_exit;
+ }
+
+#if defined(AUTO_CLAIM)
+ // We need a lock for proper auto-release
+ usbi_mutex_init(&autoclaim_lock, NULL);
+#endif
+
+ // Initialize pollable file descriptors
+ init_polling();
+
+ // Load missing CFGMGR32.DLL imports
+ if (Cfgmgr32_init() != LIBUSB_SUCCESS) {
+ usbi_err(ctx, "could not resolve Cfgmgr32.dll functions");
+ return LIBUSB_ERROR_NOT_FOUND;
+ }
+
+ // Initialize the low level APIs (we don't care about errors at this stage)
+ for (i=0; i<USB_API_MAX; i++) {
+ usb_api_backend[i].init(ctx);
+ }
+
+ // Because QueryPerformanceCounter might report different values when
+ // running on different cores, we create a separate thread for the timer
+ // calls, which we glue to the first core always to prevent timing discrepancies.
+ r = LIBUSB_ERROR_NO_MEM;
+ for (i = 0; i < 2; i++) {
+ timer_request[i] = CreateEvent(NULL, TRUE, FALSE, NULL);
+ if (timer_request[i] == NULL) {
+ usbi_err(ctx, "could not create timer request event %d - aborting", i);
+ goto init_exit;
+ }
+ }
+ timer_response = CreateSemaphore(NULL, 0, MAX_TIMER_SEMAPHORES, NULL);
+ if (timer_response == NULL) {
+ usbi_err(ctx, "could not create timer response semaphore - aborting");
+ goto init_exit;
+ }
+ timer_mutex = CreateMutex(NULL, FALSE, NULL);
+ if (timer_mutex == NULL) {
+ usbi_err(ctx, "could not create timer mutex - aborting");
+ goto init_exit;
+ }
+ timer_thread = (HANDLE)_beginthreadex(NULL, 0, windows_clock_gettime_threaded, NULL, 0, NULL);
+ if (timer_thread == NULL) {
+ usbi_err(ctx, "Unable to create timer thread - aborting");
+ goto init_exit;
+ }
+ SetThreadAffinityMask(timer_thread, 0);
+
+ guid = GUID_DEVINTERFACE_USB_HOST_CONTROLLER;
+
+ r = LIBUSB_SUCCESS;
+ for (bus = 0; ; bus++)
+ {
+ // safe loop: free up any (unprotected) dynamic resource
+ // NB: this is always executed before breaking the loop
+ safe_free(dev_interface_details);
+ safe_free(*_hcd_cur);
+
+ dev_interface_details = get_interface_details(ctx, &dev_info, NULL, guid, bus);
+ // safe loop: end of loop condition
+ if ((dev_interface_details == NULL) || (r != LIBUSB_SUCCESS))
+ break;
+
+ // Will need to change storage and size of libusb_bus_t if this ever occurs
+ if (bus == LIBUSB_BUS_MAX) {
+ usbi_warn(ctx, "program assertion failed - found more than %d buses, skipping the rest.", LIBUSB_BUS_MAX);
+ continue;
+ }
+
+ // Allocate and init a new priv structure to hold our data
+ if ((*_hcd_cur = malloc(sizeof(struct windows_hcd_priv))) == NULL) {
+ usbi_err(ctx, "could not allocate private structure for bus %u. aborting.", bus);
+ LOOP_BREAK(LIBUSB_ERROR_NO_MEM);
+ }
+ windows_hcd_priv_init(*_hcd_cur);
+ (*_hcd_cur)->path = sanitize_path(dev_interface_details->DevicePath);
+
+ _hcd_cur = &((*_hcd_cur)->next);
+ }
+ // TODO (2nd official release): thread for hotplug (see darwin source)
+ }
+
+ if (hcd_root == NULL)
+ r = LIBUSB_ERROR_NO_DEVICE;
+ else
+ r = LIBUSB_SUCCESS;
+
+init_exit: // Holds semaphore here.
+ if(!concurrent_usage && r != LIBUSB_SUCCESS) { // First init failed?
+ if (timer_thread) {
+ SetEvent(timer_request[1]); // actually the signal to quit the thread.
+ if (WAIT_OBJECT_0 != WaitForSingleObject(timer_thread, INFINITE)) {
+ usbi_warn(ctx, "could not wait for timer thread to quit");
+ TerminateThread(timer_thread, 1); // shouldn't happen, but we're destroying
+ // all objects it might have held anyway.
+ }
+ CloseHandle(timer_thread);
+ timer_thread = NULL;
+ }
+ for (i = 0; i < 2; i++) {
+ if (timer_request[i]) {
+ CloseHandle(timer_request[i]);
+ timer_request[i] = NULL;
+ }
+ }
+ if (timer_response) {
+ CloseHandle(timer_response);
+ timer_response = NULL;
+ }
+ if (timer_mutex) {
+ CloseHandle(timer_mutex);
+ timer_mutex = NULL;
+ }
+ }
+
+ if (r != LIBUSB_SUCCESS)
+ --concurrent_usage; // Not expected to call libusb_exit if we failed.
+
+ ReleaseSemaphore(semaphore, 1, NULL); // increase count back to 1
+ CloseHandle(semaphore);
+ return r;
+}
+
+/*
+ * Initialize device structure, including active config
+ */
+static int initialize_device(struct libusb_device *dev, libusb_bus_t busnum,
+ libusb_devaddr_t devaddr, char *path, int connection_index, uint8_t active_config,
+ struct libusb_device *parent_dev)
+{
+ struct windows_device_priv *priv = __device_priv(dev);
+
+ windows_device_priv_init(priv);
+
+ dev->bus_number = busnum;
+ dev->device_address = devaddr;
+ priv->path = path;
+ priv->connection_index = connection_index;
+ priv->parent_dev = parent_dev;
+
+ priv->active_config = active_config;
+
+ if (priv->active_config != 0) {
+ usbi_dbg("active config: %d", priv->active_config);
+ } else {
+ // USB devices that don't have a config value are usually missing a driver
+ // TODO (after first official release): use this for automated driver installation
+ // NB: SetupDiGetDeviceRegistryProperty w/ SPDRP_INSTALL_STATE would tell us
+ // if the driver is properly installed, but driverless devices don't seem to
+ // be enumerable by SetupDi...
+ usbi_dbg("* DRIVERLESS DEVICE *");
+ }
+
+ return LIBUSB_SUCCESS;
+}
+
+/*
+ * HCD (root) hubs need to have their device descriptor manually populated
+ *
+ * Note that we follow the Linux convention and use the "Linux Foundation root hub"
+ * vendor ID as well as the product ID to indicate the hub speed
+ */
+static int force_hcd_device_descriptor(struct libusb_device *dev, HANDLE handle)
+{
+ DWORD size;
+ USB_HUB_CAPABILITIES hub_caps;
+ USB_HUB_CAPABILITIES_EX hub_caps_ex;
+ struct windows_device_priv *priv = __device_priv(dev);
+ struct libusb_context *ctx = DEVICE_CTX(dev);
+
+ priv->dev_descriptor.bLength = sizeof(USB_DEVICE_DESCRIPTOR);
+ priv->dev_descriptor.bDescriptorType = USB_DEVICE_DESCRIPTOR_TYPE;
+ dev->num_configurations = priv->dev_descriptor.bNumConfigurations = 1;
+
+ // The following is used to set the VIS:PID of root HUBs similarly to what
+ // Linux does: 1d6b:0001 is for 1x root hubs, 1d6b:0002 for 2x
+ priv->dev_descriptor.idVendor = 0x1d6b; // Linux Foundation root hub
+ if (windows_version >= WINDOWS_VISTA_AND_LATER) {
+ size = sizeof(USB_HUB_CAPABILITIES_EX);
+ if (DeviceIoControl(handle, IOCTL_USB_GET_HUB_CAPABILITIES_EX, &hub_caps_ex,
+ size, &hub_caps_ex, size, &size, NULL)) {
+ // Sanity check. HCD hub should always be root
+ if (!hub_caps_ex.CapabilityFlags.HubIsRoot) {
+ usbi_warn(ctx, "program assertion failed - HCD hub is not reported as root hub.");
+ }
+ priv->dev_descriptor.idProduct = hub_caps_ex.CapabilityFlags.HubIsHighSpeedCapable?2:1;
+ }
+ } else {
+ size = sizeof(USB_HUB_CAPABILITIES);
+ if (!DeviceIoControl(handle, IOCTL_USB_GET_HUB_CAPABILITIES, &hub_caps,
+ size, &hub_caps, size, &size, NULL)) {
+ usbi_warn(ctx, "could not read hub capabilities (std) for hub %s: %s",
+ priv->path, windows_error_str(0));
+ priv->dev_descriptor.idProduct = 1; // Indicate 1x speed
+ } else {
+ priv->dev_descriptor.idProduct = hub_caps.HubIs2xCapable?2:1;
+ }
+ }
+
+ return LIBUSB_SUCCESS;
+}
+
+/*
+ * fetch and cache all the config descriptors through I/O
+ */
+static int cache_config_descriptors(struct libusb_device *dev, HANDLE hub_handle)
+{
+ DWORD size, ret_size;
+ struct libusb_context *ctx = DEVICE_CTX(dev);
+ struct windows_device_priv *priv = __device_priv(dev);
+ int r;
+ uint8_t i;
+
+ USB_CONFIGURATION_DESCRIPTOR_SHORT cd_buf_short; // dummy request
+ PUSB_DESCRIPTOR_REQUEST cd_buf_actual = NULL; // actual request
+ PUSB_CONFIGURATION_DESCRIPTOR cd_data = NULL;
+
+ if (dev->num_configurations == 0)
+ return LIBUSB_ERROR_INVALID_PARAM;
+
+ priv->config_descriptor = malloc(dev->num_configurations * sizeof(PUSB_CONFIGURATION_DESCRIPTOR));
+ if (priv->config_descriptor == NULL)
+ return LIBUSB_ERROR_NO_MEM;
+ for (i=0; i<dev->num_configurations; i++)
+ priv->config_descriptor[i] = NULL;
+
+ for (i=0, r=LIBUSB_SUCCESS; ; i++)
+ {
+ // safe loop: release all dynamic resources
+ safe_free(cd_buf_actual);
+
+ // safe loop: end of loop condition
+ if ((i >= dev->num_configurations) || (r != LIBUSB_SUCCESS))
+ break;
+
+ size = sizeof(USB_CONFIGURATION_DESCRIPTOR_SHORT);
+ memset(&cd_buf_short, 0, size);
+
+ cd_buf_short.req.ConnectionIndex = priv->connection_index;
+ cd_buf_short.req.SetupPacket.bmRequest = LIBUSB_ENDPOINT_IN;
+ cd_buf_short.req.SetupPacket.bRequest = USB_REQUEST_GET_DESCRIPTOR;
+ cd_buf_short.req.SetupPacket.wValue = (USB_CONFIGURATION_DESCRIPTOR_TYPE << 8) | i;
+ cd_buf_short.req.SetupPacket.wIndex = i;
+ cd_buf_short.req.SetupPacket.wLength = (USHORT)(size - sizeof(USB_DESCRIPTOR_REQUEST));
+
+ // Dummy call to get the required data size
+ if (!DeviceIoControl(hub_handle, IOCTL_USB_GET_DESCRIPTOR_FROM_NODE_CONNECTION, &cd_buf_short, size,
+ &cd_buf_short, size, &ret_size, NULL)) {
+ usbi_err(ctx, "could not access configuration descriptor (dummy): %s", windows_error_str(0));
+ LOOP_BREAK(LIBUSB_ERROR_IO);
+ }
+
+ if ((ret_size != size) || (cd_buf_short.data.wTotalLength < sizeof(USB_CONFIGURATION_DESCRIPTOR))) {
+ usbi_err(ctx, "unexpected configuration descriptor size (dummy).");
+ LOOP_BREAK(LIBUSB_ERROR_IO);
+ }
+
+ size = sizeof(USB_DESCRIPTOR_REQUEST) + cd_buf_short.data.wTotalLength;
+ if ((cd_buf_actual = (PUSB_DESCRIPTOR_REQUEST)malloc(size)) == NULL) {
+ usbi_err(ctx, "could not allocate configuration descriptor buffer. aborting.");
+ LOOP_BREAK(LIBUSB_ERROR_NO_MEM);
+ }
+ memset(cd_buf_actual, 0, size);
+
+ // Actual call
+ cd_buf_actual->ConnectionIndex = priv->connection_index;
+ cd_buf_actual->SetupPacket.bmRequest = LIBUSB_ENDPOINT_IN;
+ cd_buf_actual->SetupPacket.bRequest = USB_REQUEST_GET_DESCRIPTOR;
+ cd_buf_actual->SetupPacket.wValue = (USB_CONFIGURATION_DESCRIPTOR_TYPE << 8) | i;
+ cd_buf_actual->SetupPacket.wIndex = i;
+ cd_buf_actual->SetupPacket.wLength = (USHORT)(size - sizeof(USB_DESCRIPTOR_REQUEST));
+
+ if (!DeviceIoControl(hub_handle, IOCTL_USB_GET_DESCRIPTOR_FROM_NODE_CONNECTION, cd_buf_actual, size,
+ cd_buf_actual, size, &ret_size, NULL)) {
+ usbi_err(ctx, "could not access configuration descriptor (actual): %s", windows_error_str(0));
+ LOOP_BREAK(LIBUSB_ERROR_IO);
+ }
+
+ cd_data = (PUSB_CONFIGURATION_DESCRIPTOR)((UCHAR*)cd_buf_actual+sizeof(USB_DESCRIPTOR_REQUEST));
+
+ if ((size != ret_size) || (cd_data->wTotalLength != cd_buf_short.data.wTotalLength)) {
+ usbi_err(ctx, "unexpected configuration descriptor size (actual).");
+ LOOP_BREAK(LIBUSB_ERROR_IO);
+ }
+
+ if (cd_data->bDescriptorType != USB_CONFIGURATION_DESCRIPTOR_TYPE) {
+ usbi_err(ctx, "not a configuration descriptor");
+ LOOP_BREAK(LIBUSB_ERROR_IO);
+ }
+
+ usbi_dbg("cached config descriptor #%d (%d bytes)", i+1, cd_data->wTotalLength);
+
+ // Sanity check. Ensures that indexes for our list of config desc is in the right order
+ if (i != (cd_data->bConfigurationValue-1)) {
+ usbi_warn(ctx, "program assertion failed - config descriptors are being read out of order");
+ continue;
+ }
+
+ // Cache the descriptor
+ priv->config_descriptor[i] = malloc(cd_data->wTotalLength);
+ if (priv->config_descriptor[i] == NULL)
+ return LIBUSB_ERROR_NO_MEM;
+
+ memcpy(priv->config_descriptor[i], cd_data, cd_data->wTotalLength);
+ }
+ return LIBUSB_SUCCESS;
+}
+
+/*
+ * Recursively enumerates and finds all hubs & devices
+ */
+static int usb_enumerate_hub(struct libusb_context *ctx, struct discovered_devs **_discdevs,
+ HANDLE hub_handle, libusb_bus_t busnum, struct libusb_device *parent_dev, uint8_t nb_ports)
+{
+ struct discovered_devs *discdevs = *_discdevs;
+ struct libusb_device *dev = NULL;
+ DWORD size, size_initial, size_fixed, getname_ioctl;
+ HANDLE handle = INVALID_HANDLE_VALUE;
+ USB_HUB_NAME_FIXED s_hubname;
+ USB_NODE_CONNECTION_INFORMATION conn_info;
+ USB_NODE_INFORMATION hub_node;
+ bool is_hcd, need_unref = false;
+ int i, r;
+ LPCWSTR wstr;
+ char *tmp_str = NULL, *path_str = NULL;
+ unsigned long session_id;
+ libusb_devaddr_t devaddr = 0;
+ struct windows_device_priv *priv, *parent_priv;
+
+ // obviously, root (HCD) hubs have no parent
+ is_hcd = (parent_dev == NULL);
+ if (is_hcd)
+ {
+ if (nb_ports != 1) {
+ usbi_warn(ctx, "program assertion failed - invalid number of ports for HCD.");
+ return LIBUSB_ERROR_INVALID_PARAM;
+ }
+ parent_priv = NULL;
+ size_initial = sizeof(USB_ROOT_HUB_NAME);
+ size_fixed = sizeof(USB_ROOT_HUB_NAME_FIXED);
+ getname_ioctl = IOCTL_USB_GET_ROOT_HUB_NAME;
+ }
+ else
+ {
+ parent_priv = __device_priv(parent_dev);
+ size_initial = sizeof(USB_NODE_CONNECTION_NAME);
+ size_fixed = sizeof(USB_NODE_CONNECTION_NAME_FIXED);
+ getname_ioctl = IOCTL_USB_GET_NODE_CONNECTION_NAME;
+ }
+
+ // Loop through all the ports on this hub
+ for (i = 1, r = LIBUSB_SUCCESS; ; i++)
+ {
+ // safe loop: release all dynamic resources
+ if (need_unref) {
+ safe_unref_device(dev);
+ need_unref = false;
+ }
+ safe_free(tmp_str);
+ safe_free(path_str);
+ safe_closehandle(handle);
+
+ // safe loop: end of loop condition
+ if ((i > nb_ports) || (r != LIBUSB_SUCCESS))
+ break;
+
+ memset(&conn_info, 0, sizeof(conn_info));
+ // For non HCDs, check if the node on this port is a hub or a regular device
+ if (!is_hcd) {
+ size = sizeof(USB_NODE_CONNECTION_INFORMATION);
+ conn_info.ConnectionIndex = i;
+ if (!DeviceIoControl(hub_handle, IOCTL_USB_GET_NODE_CONNECTION_INFORMATION, &conn_info, size,
+ &conn_info, size, &size, NULL)) {
+ usbi_warn(ctx, "could not get node connection information: %s", windows_error_str(0));
+ continue;
+ }
+
+ if (conn_info.ConnectionStatus == NoDeviceConnected) {
+ continue;
+ }
+
+ if (conn_info.DeviceAddress == LIBUSB_DEVADDR_MAX) {
+ usbi_warn(ctx, "program assertion failed - device address is %d "
+ "(conflicts with root hub), ignoring device", LIBUSB_DEVADDR_MAX);
+ continue;
+ }
+
+ s_hubname.u.node.ConnectionIndex = i; // Only used for non HCDs (s_hubname is an union)
+ }
+ else
+ {
+ // HCDs have only 1 node, and it's always a hub
+ conn_info.DeviceAddress = LIBUSB_DEVADDR_MAX; // using 0 can conflict with driverless devices
+ conn_info.DeviceIsHub = true;
+ conn_info.CurrentConfigurationValue = 1;
+ }
+
+ // If this node is a hub (HCD or not), open it
+ if (conn_info.DeviceIsHub) {
+ size = size_initial;
+ if (!DeviceIoControl(hub_handle, getname_ioctl, &s_hubname, size,
+ &s_hubname, size, &size, NULL)) {
+ usbi_warn(ctx, "could not get hub path (dummy): %s", windows_error_str(0));
+ continue;
+ }
+
+ size = is_hcd?s_hubname.u.root.ActualLength:s_hubname.u.node.ActualLength;
+ if (size > size_fixed) {
+ usbi_warn(ctx, "program assertion failed - hub path is too long");
+ continue;
+ }
+
+ if (!is_hcd) {
+ // previous call trashes some of the data
+ s_hubname.u.node.ConnectionIndex = i;
+ }
+ if (!DeviceIoControl(hub_handle, getname_ioctl, &s_hubname, size,
+ &s_hubname, size, &size, NULL)) {
+ usbi_warn(ctx, "could not get hub path (actual): %s", windows_error_str(0));
+ continue;
+ }
+
+ // Add prefix
+ wstr = is_hcd?s_hubname.u.root.RootHubName:s_hubname.u.node.NodeName;
+ tmp_str = wchar_to_utf8(wstr);
+ if (tmp_str == NULL) {
+ usbi_err(ctx, "could not convert hub path string.");
+ LOOP_BREAK(LIBUSB_ERROR_NO_MEM);
+ }
+
+ path_str = sanitize_path(tmp_str);
+ if (path_str == NULL) {
+ usbi_err(ctx, "could not sanitize hub path string.");
+ LOOP_BREAK(LIBUSB_ERROR_NO_MEM);
+ }
+
+ // Open Hub
+ handle = CreateFileA(path_str, GENERIC_WRITE, FILE_SHARE_WRITE, NULL, OPEN_EXISTING,
+ FILE_FLAG_OVERLAPPED, NULL);
+ if(handle == INVALID_HANDLE_VALUE) {
+ usbi_warn(ctx, "could not open hub %s: %s", path_str, windows_error_str(0));
+ continue;
+ }
+ }
+
+ // Generate a session ID
+ // Will need to change the session_id computation if this assertion fails
+ if (conn_info.DeviceAddress > LIBUSB_DEVADDR_MAX) {
+ usbi_warn(ctx, "program assertion failed - device address is greater than %d, ignoring device",
+ LIBUSB_DEVADDR_MAX);
+ continue;
+ } else {
+ devaddr = (uint8_t)conn_info.DeviceAddress;
+ }
+ // Same trick as linux for session_id, with same caveat
+ session_id = busnum << (sizeof(libusb_devaddr_t)*8) | devaddr;
+ usbi_dbg("busnum %d devaddr %d session_id %ld", busnum, devaddr, session_id);
+
+ // Allocate device if needed
+ dev = usbi_get_device_by_session_id(ctx, session_id);
+ if (dev) {
+ usbi_dbg("using existing device for session %ld", session_id);
+ priv = __device_priv(dev);
+ // Because we are rebuilding the list, there's no guarantee
+ // the parent device pointer is still the same.
+ // Other device data should still be reusable
+ priv->parent_dev = parent_dev;
+ } else {
+ usbi_dbg("allocating new device for session %ld", session_id);
+ if ((dev = usbi_alloc_device(ctx, session_id)) == NULL) {
+ LOOP_BREAK(LIBUSB_ERROR_NO_MEM);
+ }
+ need_unref = true;
+
+ LOOP_CHECK(initialize_device(dev, busnum, devaddr, path_str, i,
+ conn_info.CurrentConfigurationValue, parent_dev));
+ priv = __device_priv(dev);
+
+ path_str = NULL; // protect our path from being freed
+
+ // Setup the cached descriptors. Note that only non HCDs can fetch descriptors
+ if (!is_hcd) {
+ // The device descriptor has been read with conn_info
+ memcpy(&priv->dev_descriptor, &(conn_info.DeviceDescriptor), sizeof(USB_DEVICE_DESCRIPTOR));
+ dev->num_configurations = priv->dev_descriptor.bNumConfigurations;
+ // If we can't read the config descriptors, just set the number of confs to zero
+ if (cache_config_descriptors(dev, hub_handle) != LIBUSB_SUCCESS) {
+ dev->num_configurations = 0;
+ priv->dev_descriptor.bNumConfigurations = 0;
+ }
+ } else {
+ LOOP_CHECK(force_hcd_device_descriptor(dev, handle));
+ }
+ LOOP_CHECK(usbi_sanitize_device(dev));
+ }
+
+ discdevs = discovered_devs_append(*_discdevs, dev);
+ if (!discdevs) {
+ LOOP_BREAK(LIBUSB_ERROR_NO_MEM);
+ }
+
+ *_discdevs = discdevs;
+
+ // Finally, if device is a hub, recurse
+ if (conn_info.DeviceIsHub) {
+ // Find number of ports for this hub
+ size = sizeof(USB_NODE_INFORMATION);
+ if (!DeviceIoControl(handle, IOCTL_USB_GET_NODE_INFORMATION, &hub_node, size,
+ &hub_node, size, &size, NULL)) {
+ usbi_warn(ctx, "could not retreive information for hub %s: %s",
+ priv->path, windows_error_str(0));
+ continue;
+ }
+
+ if (hub_node.NodeType != UsbHub) {
+ usbi_warn(ctx, "unexpected hub type (%d) for hub %s", hub_node.NodeType, priv->path);
+ continue;
+ }
+
+ usbi_dbg("%d ports Hub: %s", hub_node.u.HubInformation.HubDescriptor.bNumberOfPorts, priv->path);
+
+ usb_enumerate_hub(ctx, _discdevs, handle, busnum, dev,
+ hub_node.u.HubInformation.HubDescriptor.bNumberOfPorts);
+ }
+ }
+
+ return r;
+}
+
+/*
+ * Composite device interfaces are not enumerated using GUID_DEVINTERFACE_USB_DEVICE,
+ * but instead require a different lookup mechanism
+ */
+static int set_composite_device(struct libusb_context *ctx, DEVINST devinst, struct windows_device_priv *priv)
+{
+// indexes for additional interface GUIDs, not available from "USB"
+// SetupDiGetClassDevs enumeration should go here. Typically, these are
+// device interfaces that begin with something else than "\\?\usb\"
+enum libusb_hid_report_type {
+ HID_DEVICE_INTERFACE_GUID_INDEX = 0,
+ MAX_DEVICE_INTERFACE_GUID_INDEX = 1
+};
+
+ DEVINST child_devinst, parent_devinst;
+ unsigned i, j, max_guids, nb_paths, interface_number;
+ uint8_t api;
+ bool found;
+ DWORD type, size;
+ CONFIGRET r;
+ HDEVINFO dev_info;
+ SP_DEVINFO_DATA dev_info_data;
+ SP_DEVICE_INTERFACE_DETAIL_DATA *dev_interface_details = NULL;
+ HKEY key;
+ WCHAR guid_string_w[MAX_GUID_STRING_LENGTH];
+ GUID guid, class_guid;
+ GUID guid_table[MAX_USB_DEVICES];
+ char* sanitized_path[MAX_USB_DEVICES];
+ char* hid_path[MAX_USB_DEVICES]; // An extra path is needed for HID
+ uint8_t api_type[MAX_USB_DEVICES];
+ char* sanitized_short = NULL;
+ char path[MAX_PATH_LENGTH];
+ char driver[MAX_KEY_LENGTH];
+
+ dev_info = SetupDiGetClassDevs(NULL, "USB", NULL, DIGCF_PRESENT|DIGCF_ALLCLASSES);
+ if (dev_info == INVALID_HANDLE_VALUE) {
+ return LIBUSB_ERROR_NOT_FOUND;
+ }
+
+ // Manually add the HID GUID as it cannot be read with DeviceInterfaceGUIDs reg key)
+ // NB the value returned by HidD_GetHidGuid, which is for interface class is different
+ // from GUID_HID, which is the device class GUID
+ HidD_GetHidGuid(&guid_table[HID_DEVICE_INTERFACE_GUID_INDEX]);
+ // NB: for other interface guids, SetupDiClassGuidsFromName can be used
+ max_guids = MAX_DEVICE_INTERFACE_GUID_INDEX;
+
+ // First, retrieve all the device interface GUIDs
+ for (i = 0; ; i++)
+ {
+ dev_info_data.cbSize = sizeof(dev_info_data);
+ if (!SetupDiEnumDeviceInfo(dev_info, i, &dev_info_data)) {
+ break;
+ }
+
+ key = SetupDiOpenDevRegKey(dev_info, &dev_info_data, DICS_FLAG_GLOBAL, 0, DIREG_DEV, KEY_READ);
+ if (key == INVALID_HANDLE_VALUE) {
+ usbi_dbg("could not open registry key");
+ continue;
+ }
+
+ size = sizeof(guid_string_w);
+ r = RegQueryValueExW(key, L"DeviceInterfaceGUIDs", NULL, &type,
+ (BYTE*)guid_string_w, &size);
+ RegCloseKey(key);
+ if (r != ERROR_SUCCESS) {
+ continue;
+ }
+ CLSIDFromString(guid_string_w, &guid);
+
+ // identical device interface GUIDs are not supposed to happen, but are a real possibility
+ // => check and ignore duplicates
+ found = false;
+ for (j=0; j<max_guids; j++) {
+ if (memcmp(&guid_table[j], &guid, sizeof(GUID)) == 0) {
+ found = true;
+ break;
+ }
+ }
+ if (!found) {
+ guid_table[max_guids++] = guid;
+ if (max_guids > MAX_USB_DEVICES) {
+ usbi_warn(ctx, "more than %d devices - ignoring the rest", MAX_USB_DEVICES);
+ break;
+ }
+ }
+ }
+ SetupDiDestroyDeviceInfoList(dev_info);
+
+ // Now let's find the device interface paths for all these devices
+ nb_paths = 0;
+ for (j=0; j<max_guids; j++)
+ {
+ guid = guid_table[j];
+
+ for (i = 0; ; i++)
+ {
+ safe_free(dev_interface_details);
+ dev_interface_details = get_interface_details(ctx, &dev_info, &dev_info_data, guid, i);
+ if (dev_interface_details == NULL)
+ break;
+
+ // HID devices (and possibly other classes) have an extra indirection
+ // for an USB path we can recognize
+ if (j == HID_DEVICE_INTERFACE_GUID_INDEX) {
+ if (CM_Get_Parent(&parent_devinst, dev_info_data.DevInst, 0) != CR_SUCCESS) {
+ usbi_warn(ctx, "could not retrieve HID parent info data for device %s, skipping: %s",
+ dev_interface_details->DevicePath, windows_error_str(0));
+ continue;
+ }
+
+ if (CM_Get_Device_ID(parent_devinst, path, MAX_PATH_LENGTH, 0) != CR_SUCCESS) {
+ usbi_warn(ctx, "could not retrieve HID parent's path for device %s, skipping: %s",
+ dev_interface_details->DevicePath, windows_error_str(0));
+ continue;
+ }
+ }
+
+ // In case we can't read the driver string through SPDRP_SERVICE (which is
+ // the case for HID), we need the ClassGUID for comparison.
+ if(!SetupDiGetDeviceRegistryPropertyW(dev_info, &dev_info_data, SPDRP_CLASSGUID,
+ NULL, (BYTE*)guid_string_w, sizeof(guid_string_w), &size)) {
+ usbi_warn(ctx, "could not read class GUID for device %s, skipping: %s",
+ dev_interface_details->DevicePath, windows_error_str(0));
+ continue;
+ }
+ CLSIDFromString(guid_string_w, &class_guid);
+
+ // Attempt to read the driver string
+ if(!SetupDiGetDeviceRegistryProperty(dev_info, &dev_info_data, SPDRP_SERVICE,
+ NULL, (BYTE*)driver, MAX_KEY_LENGTH, &size)) {
+ driver[0] = 0;
+ }
+
+ for (api=USB_API_WINUSB; api<USB_API_MAX; api++) {
+ if ( (is_api_driver(driver, api))
+ || (guid_eq(&class_guid, usb_api_backend[api].class_guid)) ) {
+ api_type[nb_paths] = api;
+ if (j == HID_DEVICE_INTERFACE_GUID_INDEX) {
+ hid_path[nb_paths] = sanitize_path(path);
+ } else {
+ hid_path[nb_paths] = NULL;
+ }
+ sanitized_path[nb_paths++] = sanitize_path(dev_interface_details->DevicePath);
+ if (nb_paths > MAX_USB_DEVICES) {
+ usbi_warn(ctx, "more than %d devices - ignoring the rest", MAX_USB_DEVICES);
+ break;
+ }
+ }
+ }
+ }
+ }
+
+ // Finally, match the interface paths with the interfaces. We do that
+ // by looking at the children of the composite device
+ // NB: if the interfaces are not found in their expected position,
+ // claim_interface will issue a warning
+ found = false;
+ memset(&child_devinst, 0, sizeof(DEVINST)); // prevents /W4 warning
+ for (i = 0; i<USB_MAXINTERFACES; i++)
+ {
+ if (i == 0) {
+ r = CM_Get_Child(&child_devinst, devinst, 0);
+ } else {
+ r = CM_Get_Sibling(&child_devinst, child_devinst, 0);
+ }
+ if (r == CR_NO_SUCH_DEVNODE) { // end of the siblings
+ break;
+ } else if (r != CR_SUCCESS) {
+ usbi_dbg("unable to find interface sibling #%d, error = %X", i, r);
+ break;
+ }
+
+ r = CM_Get_Device_ID(child_devinst, path, MAX_PATH_LENGTH, 0);
+ if (r != CR_SUCCESS) {
+ usbi_err(ctx, "could not retrieve simple path for interface %d: CR error %d",
+ i, r);
+ continue;
+ }
+ sanitized_short = sanitize_path(path);
+ if (sanitized_short == NULL) {
+ usbi_err(ctx, "could not sanitize path for interface %d", i);
+ continue;
+ }
+
+ // Because MI_## are not necessarily in sequential order (some composite HID
+ // devices will have only MI_00 & MI_03 for instance), we retrieve the actual
+ // interface number from the path's MI value
+ interface_number = i;
+ for (j=0; sanitized_short[j] != 0; ) {
+ if ( (sanitized_short[j++] == 'M') && (sanitized_short[j++] == 'I')
+ && (sanitized_short[j++] == '_') ) {
+ interface_number = (sanitized_short[j++] - '0')*10;
+ interface_number += sanitized_short[j] - '0';
+ break;
+ }
+ }
+ if (sanitized_short[j] == 0) {
+ usbi_warn(ctx, "failure to read interface number for %s. Using default value %d",
+ sanitized_short, interface_number);
+ }
+
+ for (j=0; j<nb_paths; j++) {
+ if ( (safe_strncmp(sanitized_path[j], sanitized_short, strlen(sanitized_short)) == 0)
+ || (safe_strcmp(hid_path[j], sanitized_short) == 0 ) ) {
+ // HID devices can have multiple collections (COL##) for each MI_## interface
+ if (priv->usb_interface[interface_number].path != NULL) {
+ usbi_dbg("interface_path[%d] already set - ignoring HID collection: %s",
+ interface_number, sanitized_path[j]);
+ if (api_type[j] != USB_API_HID) {
+ usbi_warn(ctx, "program assertion failed - not an HID collection");
+ }
+ } else {
+ priv->usb_interface[interface_number].path = sanitized_path[j];
+ priv->usb_interface[interface_number].apib = &usb_api_backend[api_type[j]];
+ if ((api_type[j] == USB_API_HID) && (priv->hid == NULL)) {
+ priv->hid = calloc(1, sizeof(struct hid_device_priv));
+ }
+ priv->composite_api_flags |= 1<<api_type[j];
+ sanitized_path[j] = NULL;
+ }
+ }
+ }
+ safe_free(sanitized_short);
+
+ if (priv->usb_interface[interface_number].path == NULL) {
+ usbi_warn(ctx, "interface_path[%d]: unhandled API - interface will be disabled",
+ interface_number);
+ continue;
+ }
+ usbi_dbg("interface_path[%d]: %s", interface_number, priv->usb_interface[interface_number].path);
+ found = true;
+ }
+
+ for (j=0; j<nb_paths; j++) {
+ safe_free(sanitized_path[j]);
+ safe_free(hid_path[j]);
+ }
+
+ if (found == 0) {
+ usbi_warn(ctx, "composite device: no interfaces were found");
+ return LIBUSB_ERROR_NOT_FOUND;
+ }
+
+ return LIBUSB_SUCCESS;
+}
+
+/*
+ * Likewise, HID device interfaces's path (\\.\HID\...) are not enumerated through the
+ * generic USB devices GUID, but are actually children of one such device
+ */
+static int set_hid_device(struct libusb_context *ctx, struct windows_device_priv *priv)
+ {
+ char path[MAX_PATH_LENGTH];
+ char *sanitized_path = NULL;
+ HDEVINFO dev_info;
+ SP_DEVICE_INTERFACE_DETAIL_DATA *dev_interface_details = NULL;
+ SP_DEVINFO_DATA dev_info_data;
+ DEVINST parent_devinst;
+ GUID guid;
+ int r = LIBUSB_SUCCESS;
+ unsigned i, interface_number;
+
+ interface_number = 0;
+ HidD_GetHidGuid(&guid);
+ for (i = 0; ; i++)
+ {
+ // safe loop: free up any (unprotected) dynamic resource
+ safe_free(dev_interface_details);
+ safe_free(sanitized_path);
+
+ dev_interface_details = get_interface_details(ctx, &dev_info, &dev_info_data, guid, i);
+ // safe loop: end of loop condition
+ if ( (dev_interface_details == NULL)
+ || (r != LIBUSB_SUCCESS) )
+ break;
+
+ // Retrieve parent's path using PnP Configuration Manager (CM)
+ if (CM_Get_Parent(&parent_devinst, dev_info_data.DevInst, 0) != CR_SUCCESS) {
+ usbi_warn(ctx, "could not retrieve parent info data for device %s, skipping: %s",
+ dev_interface_details->DevicePath, windows_error_str(0));
+ continue;
+ }
+
+ if (CM_Get_Device_ID(parent_devinst, path, MAX_PATH_LENGTH, 0) != CR_SUCCESS) {
+ usbi_warn(ctx, "could not retrieve parent's path for device %s, skipping: %s",
+ dev_interface_details->DevicePath, windows_error_str(0));
+ continue;
+ }
+
+ // Fix parent's path inconsistencies before attempting to compare
+ sanitized_path = sanitize_path(path);
+ if (sanitized_path == NULL) {
+ usbi_warn(ctx, "could not sanitize parent's path for device %s, skipping.",
+ dev_interface_details->DevicePath);
+ continue;
+ }
+
+ // NB: we compare strings of different lengths below => strncmp
+ if (safe_strncmp(priv->path, sanitized_path, strlen(sanitized_path)) == 0) {
+ priv->usb_interface[interface_number].path = sanitize_path(dev_interface_details->DevicePath);
+ priv->usb_interface[interface_number].apib = &usb_api_backend[USB_API_HID];
+ usbi_dbg("interface_path[%d]: %s", interface_number, priv->usb_interface[interface_number].path);
+ interface_number++;
+ }
+ }
+
+ return LIBUSB_SUCCESS;
+}
+
+/*
+ * This function retrieves and sets the paths of all non-hub devices
+ * NB: No I/O with device is required during this call
+ */
+static int set_device_paths(struct libusb_context *ctx, struct discovered_devs *discdevs)
+{
+ struct windows_device_priv *priv;
+ struct windows_device_priv *parent_priv;
+ char path[MAX_PATH_LENGTH];
+ char reg_key[MAX_KEY_LENGTH];
+ char *sanitized_path = NULL;
+ HDEVINFO dev_info;
+ SP_DEVICE_INTERFACE_DETAIL_DATA *dev_interface_details = NULL;
+ SP_DEVINFO_DATA dev_info_data;
+ DEVINST parent_devinst;
+ GUID guid;
+ DWORD size, reg_type, install_state, port_nr;
+ int r = LIBUSB_SUCCESS;
+ unsigned i, j, k;
+ uint8_t api;
+ bool found;
+
+ // TODO (after first official release): MI_## automated driver installation
+ guid = GUID_DEVINTERFACE_USB_DEVICE;
+ for (i = 0; ; i++)
+ {
+ // safe loop: free up any (unprotected) dynamic resource
+ safe_free(dev_interface_details);
+ safe_free(sanitized_path);
+
+ dev_interface_details = get_interface_details(ctx, &dev_info, &dev_info_data, guid, i);
+ // safe loop: end of loop condition
+ if ( (dev_interface_details == NULL)
+ || (r != LIBUSB_SUCCESS) )
+ break;
+
+ // Check that the driver installation is OK
+ if ( (!SetupDiGetDeviceRegistryProperty(dev_info, &dev_info_data, SPDRP_INSTALL_STATE,
+ ®_type, (BYTE*)&install_state, 4, &size))
+ && (size != 4) ){
+ usbi_warn(ctx, "could not detect installation state of driver for %s: %s",
+ dev_interface_details->DevicePath, windows_error_str(0));
+ } else if (install_state != 0) {
+ usbi_warn(ctx, "driver for device %s is reporting an issue (code: %d) - skipping",
+ dev_interface_details->DevicePath, install_state);
+ continue;
+ }
+
+ // The SPDRP_ADDRESS for USB devices should be the device port number on the hub
+ if ( (!SetupDiGetDeviceRegistryProperty(dev_info, &dev_info_data, SPDRP_ADDRESS,
+ ®_type, (BYTE*)&port_nr, 4, &size))
+ && (size != 4) ){
+ usbi_warn(ctx, "could not retrieve port number for device %s, skipping: %s",
+ dev_interface_details->DevicePath, windows_error_str(0));
+ continue;
+ }
+
+ // Retrieve parent's path using PnP Configuration Manager (CM)
+ if (CM_Get_Parent(&parent_devinst, dev_info_data.DevInst, 0) != CR_SUCCESS) {
+ usbi_warn(ctx, "could not retrieve parent info data for device %s, skipping: %s",
+ dev_interface_details->DevicePath, windows_error_str(0));
+ continue;
+ }
+
+ if (CM_Get_Device_ID(parent_devinst, path, MAX_PATH_LENGTH, 0) != CR_SUCCESS) {
+ usbi_warn(ctx, "could not retrieve parent's path for device %s, skipping: %s",
+ dev_interface_details->DevicePath, windows_error_str(0));
+ continue;
+ }
+
+ // Fix parent's path inconsistencies before attempting to compare
+ sanitized_path = sanitize_path(path);
+ if (sanitized_path == NULL) {
+ usbi_warn(ctx, "could not sanitize parent's path for device %s, skipping.",
+ dev_interface_details->DevicePath);
+ continue;
+ }
+
+ // With the parent path and port number, we should be able to locate our device
+ // by comparing these values to the ones we got when enumerating hubs
+ found = false;
+ for (j=0; j<discdevs->len; j++) {
+ priv = __device_priv(discdevs->devices[j]);
+
+ if (priv->parent_dev == NULL) {
+ continue; // ignore HCDs
+ }
+
+ parent_priv = __device_priv(priv->parent_dev);
+
+ // NB: we compare strings of different lengths below => strncmp
+ if ( (safe_strncmp(parent_priv->path, sanitized_path, strlen(sanitized_path)) == 0)
+ && (port_nr == priv->connection_index) ) {
+
+ priv->path = sanitize_path(dev_interface_details->DevicePath);
+
+ usbi_dbg("path (%d:%d): %s", discdevs->devices[j]->bus_number,
+ discdevs->devices[j]->device_address, priv->path);
+
+ // Check the service name to know what kind of device we have.
+ // The service name is really the driver name without ".sys" ("WinUSB", "HidUsb", ...)
+ // It tells us if we can use WinUSB, if we have a composite device, and the API to use
+ if(!SetupDiGetDeviceRegistryProperty(dev_info, &dev_info_data, SPDRP_SERVICE,
+ ®_type, (BYTE*)reg_key, MAX_KEY_LENGTH, &size)) {
+ usbi_err(ctx, "could not retrieve driver information for device %s, skipping: %s",
+ dev_interface_details->DevicePath, windows_error_str(0));
+ break;
+ }
+
+ usbi_dbg("driver: %s", reg_key);
+ found = true;
+
+ for (api = 0; api<USB_API_MAX; api++) {
+ if (is_api_driver(reg_key, api)) {
+ priv->apib = &usb_api_backend[api];
+ switch(api) {
+ case USB_API_COMPOSITE:
+ set_composite_device(ctx, dev_info_data.DevInst, priv);
+ break;
+ case USB_API_HID:
+ safe_free(priv->hid);
+ priv->hid = calloc(1, sizeof(struct hid_device_priv));
+ if (priv->hid == NULL) {
+ usbi_err(ctx, "could not allocate HID data for %s, skipping",
+ dev_interface_details->DevicePath);
+ priv->apib = &usb_api_backend[USB_API_UNSUPPORTED];
+ safe_free(priv->path);
+ } else {
+ set_hid_device(ctx, priv);
+ }
+ break;
+ default:
+ // For other devices, the first interface is the same as the device
+ priv->usb_interface[0].path = malloc(safe_strlen(priv->path));
+ if (priv->usb_interface[0].path != NULL) {
+ safe_strcpy(priv->usb_interface[0].path, safe_strlen(priv->path), priv->path);
+ }
+ // The following is needed if we want to API calls to work for both simple
+ // and composite devices, as
+ for(k=0; k<USB_MAXINTERFACES; k++) {
+ priv->usb_interface[k].apib = &usb_api_backend[api];
+ }
+ break;
+ }
+ }
+ }
+ break;
+ }
+ }
+ if (!found) {
+ usbi_warn(ctx, "could not match %s with a libusb device.", dev_interface_details->DevicePath);
+ continue;
+ }
+ }
+
+ return LIBUSB_SUCCESS;
+}
+
+/*
+ * get_device_list: libusb backend device enumeration function
+ */
+static int windows_get_device_list(struct libusb_context *ctx, struct discovered_devs **_discdevs)
+{
+ struct windows_hcd_priv* hcd;
+ HANDLE handle = INVALID_HANDLE_VALUE;
+ int r = LIBUSB_SUCCESS;
+ libusb_bus_t bus;
+
+ // Use the index of the HCD in the chained list as bus #
+ for (hcd = hcd_root, bus = 0; ; hcd = hcd->next, bus++)
+ {
+ safe_closehandle(handle);
+
+ if ( (hcd == NULL) || (r != LIBUSB_SUCCESS) )
+ break;
+
+ if (bus == LIBUSB_BUS_MAX) {
+ usbi_warn(ctx, "program assertion failed - got more than %d buses, skipping the rest.", LIBUSB_BUS_MAX);
+ continue;
+ }
+
+ handle = CreateFileA(hcd->path, GENERIC_WRITE, FILE_SHARE_WRITE,
+ NULL, OPEN_EXISTING, FILE_FLAG_OVERLAPPED, NULL);
+ if (handle == INVALID_HANDLE_VALUE) {
+ usbi_warn(ctx, "could not open bus %u, skipping: %s", bus, windows_error_str(0));
+ continue;
+ }
+
+ LOOP_CHECK(usb_enumerate_hub(ctx, _discdevs, handle, bus, NULL, 1));
+ }
+
+ // Set the interface path for non-hubs
+ r = set_device_paths(ctx, *_discdevs);
+
+ return r;
+}
+
+/*
+ * exit: libusb backend deinitialization function
+ */
+static void windows_exit(void)
+{
+ struct windows_hcd_priv* hcd_tmp;
+ int i;
+ HANDLE semaphore;
+ TCHAR sem_name[11+1+8]; // strlen(libusb_init)+'\0'+(32-bit hex PID)
+
+ sprintf(sem_name, "libusb_init%08X", (unsigned int)GetCurrentProcessId()&0xFFFFFFFF);
+ semaphore = CreateSemaphore(NULL, 1, 1, sem_name);
+ if (semaphore == NULL) {
+ return;
+ }
+
+ // A successful wait brings our semaphore count to 0 (unsignaled)
+ // => any concurent wait stalls until the semaphore release
+ if (WaitForSingleObject(semaphore, INFINITE) != WAIT_OBJECT_0) {
+ CloseHandle(semaphore);
+ return;
+ }
+
+ // Only works if exits and inits are balanced exactly
+ if (--concurrent_usage < 0) { // Last exit
+ while (hcd_root != NULL)
+ {
+ hcd_tmp = hcd_root; // Keep a copy for free
+ hcd_root = hcd_root->next;
+ windows_hcd_priv_release(hcd_tmp);
+ safe_free(hcd_tmp);
+ }
+
+ for (i=0; i<USB_API_MAX; i++) {
+ usb_api_backend[i].exit();
+ }
+ exit_polling();
+
+ if (timer_thread) {
+ SetEvent(timer_request[1]); // actually the signal to quit the thread.
+ if (WAIT_OBJECT_0 != WaitForSingleObject(timer_thread, INFINITE)) {
+ usbi_dbg("could not wait for timer thread to quit");
+ TerminateThread(timer_thread, 1);
+ }
+ CloseHandle(timer_thread);
+ timer_thread = NULL;
+ }
+ for (i = 0; i < 2; i++) {
+ if (timer_request[i]) {
+ CloseHandle(timer_request[i]);
+ timer_request[i] = NULL;
+ }
+ }
+ if (timer_response) {
+ CloseHandle(timer_response);
+ timer_response = NULL;
+ }
+ if (timer_mutex) {
+ CloseHandle(timer_mutex);
+ timer_mutex = NULL;
+ }
+ }
+
+ ReleaseSemaphore(semaphore, 1, NULL); // increase count back to 1
+ CloseHandle(semaphore);
+}
+
+static int windows_get_device_descriptor(struct libusb_device *dev, unsigned char *buffer, int *host_endian)
+{
+ struct windows_device_priv *priv = __device_priv(dev);
+
+ memcpy(buffer, &(priv->dev_descriptor), DEVICE_DESC_LENGTH);
+ *host_endian = 0;
+
+ return LIBUSB_SUCCESS;
+}
+
+static int windows_get_config_descriptor(struct libusb_device *dev, uint8_t config_index, unsigned char *buffer, size_t len, int *host_endian)
+{
+ struct windows_device_priv *priv = __device_priv(dev);
+ PUSB_CONFIGURATION_DESCRIPTOR config_header;
+ size_t size;
+
+ // config index is zero based
+ if (config_index >= dev->num_configurations)
+ return LIBUSB_ERROR_INVALID_PARAM;
+
+ if ((priv->config_descriptor == NULL) || (priv->config_descriptor[config_index] == NULL))
+ return LIBUSB_ERROR_NOT_FOUND;
+
+ config_header = (PUSB_CONFIGURATION_DESCRIPTOR)priv->config_descriptor[config_index];
+
+ size = min(config_header->wTotalLength, len);
+ memcpy(buffer, priv->config_descriptor[config_index], size);
+
+ return LIBUSB_SUCCESS;
+}
+
+/*
+ * return the cached copy of the active config descriptor
+ */
+static int windows_get_active_config_descriptor(struct libusb_device *dev, unsigned char *buffer, size_t len, int *host_endian)
+{
+ struct windows_device_priv *priv = __device_priv(dev);
+
+ if (priv->active_config == 0)
+ return LIBUSB_ERROR_NOT_FOUND;
+
+ // config index is zero based
+ return windows_get_config_descriptor(dev, (uint8_t)(priv->active_config-1), buffer, len, host_endian);
+}
+
+static int windows_open(struct libusb_device_handle *dev_handle)
+{
+ struct windows_device_priv *priv = __device_priv(dev_handle->dev);
+ struct libusb_context *ctx = DEVICE_CTX(dev_handle->dev);
+
+ if (priv->apib == NULL) {
+ usbi_err(ctx, "program assertion failed - device is not initialized");
+ return LIBUSB_ERROR_NO_DEVICE;
+ }
+
+ return priv->apib->open(dev_handle);
+}
+
+static void windows_close(struct libusb_device_handle *dev_handle)
+{
+ struct windows_device_priv *priv = __device_priv(dev_handle->dev);
+
+ priv->apib->close(dev_handle);
+}
+
+static int windows_get_configuration(struct libusb_device_handle *dev_handle, int *config)
+{
+ struct windows_device_priv *priv = __device_priv(dev_handle->dev);
+
+ if (priv->active_config == 0) {
+ *config = 0;
+ return LIBUSB_ERROR_NOT_FOUND;
+ }
+
+ *config = priv->active_config;
+ return LIBUSB_SUCCESS;
+}
+
+/*
+ * from http://msdn.microsoft.com/en-us/library/ms793522.aspx: "The port driver
+ * does not currently expose a service that allows higher-level drivers to set
+ * the configuration."
+ */
+static int windows_set_configuration(struct libusb_device_handle *dev_handle, int config)
+{
+ struct windows_device_priv *priv = __device_priv(dev_handle->dev);
+ int r = LIBUSB_SUCCESS;
+
+ if (config >= USB_MAXCONFIG)
+ return LIBUSB_ERROR_INVALID_PARAM;
+
+ r = libusb_control_transfer(dev_handle, LIBUSB_ENDPOINT_OUT |
+ LIBUSB_REQUEST_TYPE_STANDARD | LIBUSB_RECIPIENT_DEVICE,
+ LIBUSB_REQUEST_SET_CONFIGURATION, (uint16_t)config,
+ 0, NULL, 0, 1000);
+
+ if (r == LIBUSB_SUCCESS) {
+ priv->active_config = (uint8_t)config;
+ }
+ return r;
+}
+
+static int windows_claim_interface(struct libusb_device_handle *dev_handle, int iface)
+{
+ int r = LIBUSB_SUCCESS;
+ struct windows_device_priv *priv = __device_priv(dev_handle->dev);
+
+ if (iface >= USB_MAXINTERFACES)
+ return LIBUSB_ERROR_INVALID_PARAM;
+
+ safe_free(priv->usb_interface[iface].endpoint);
+ priv->usb_interface[iface].nb_endpoints= 0;
+
+ r = priv->apib->claim_interface(dev_handle, iface);
+
+ if (r == LIBUSB_SUCCESS) {
+ r = windows_assign_endpoints(dev_handle->dev, iface, 0);
+ }
+
+ return r;
+}
+
+static int windows_set_interface_altsetting(struct libusb_device_handle *dev_handle, int iface, int altsetting)
+{
+ int r = LIBUSB_SUCCESS;
+ struct windows_device_priv *priv = __device_priv(dev_handle->dev);
+
+ safe_free(priv->usb_interface[iface].endpoint);
+ priv->usb_interface[iface].nb_endpoints= 0;
+
+ r = priv->apib->set_interface_altsetting(dev_handle, iface, altsetting);
+
+ if (r == LIBUSB_SUCCESS) {
+ r = windows_assign_endpoints(dev_handle->dev, iface, altsetting);
+ }
+
+ return r;
+}
+
+static int windows_release_interface(struct libusb_device_handle *dev_handle, int iface)
+{
+ struct windows_device_priv *priv = __device_priv(dev_handle->dev);
+
+ windows_set_interface_altsetting(dev_handle, iface, 0);
+ return priv->apib->release_interface(dev_handle, iface);
+}
+
+static int windows_clear_halt(struct libusb_device_handle *dev_handle, unsigned char endpoint)
+{
+ struct windows_device_priv *priv = __device_priv(dev_handle->dev);
+ return priv->apib->clear_halt(dev_handle, endpoint);
+}
+
+static int windows_reset_device(struct libusb_device_handle *dev_handle)
+{
+ struct windows_device_priv *priv = __device_priv(dev_handle->dev);
+ return priv->apib->reset_device(dev_handle);
+}
+
+// The 3 functions below are unlikely to ever get supported on Windows
+static int windows_kernel_driver_active(struct libusb_device_handle *dev_handle, int iface)
+{
+ return LIBUSB_ERROR_NOT_SUPPORTED;
+}
+
+static int windows_attach_kernel_driver(struct libusb_device_handle *dev_handle, int iface)
+{
+ return LIBUSB_ERROR_NOT_SUPPORTED;
+}
+
+static int windows_detach_kernel_driver(struct libusb_device_handle *dev_handle, int iface)
+{
+ return LIBUSB_ERROR_NOT_SUPPORTED;
+}
+
+static void windows_destroy_device(struct libusb_device *dev)
+{
+ struct windows_device_priv *priv = __device_priv(dev);
+ windows_device_priv_release(priv, dev->num_configurations);
+}
+
+static void windows_clear_transfer_priv(struct usbi_transfer *itransfer)
+{
+ struct windows_transfer_priv *transfer_priv = usbi_transfer_get_os_priv(itransfer);
+
+ usbi_free_fd(transfer_priv->pollable_fd.fd);
+ safe_free(transfer_priv->hid_buffer);
+#if defined(AUTO_CLAIM)
+ // When auto claim is in use, attempt to release the auto-claimed interface
+ auto_release(itransfer);
+#endif
+}
+
+static int submit_bulk_transfer(struct usbi_transfer *itransfer)
+{
+ struct libusb_transfer *transfer = __USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer);
+ struct libusb_context *ctx = DEVICE_CTX(transfer->dev_handle->dev);
+ struct windows_transfer_priv *transfer_priv = usbi_transfer_get_os_priv(itransfer);
+ struct windows_device_priv *priv = __device_priv(transfer->dev_handle->dev);
+ int r;
+
+ r = priv->apib->submit_bulk_transfer(itransfer);
+ if (r != LIBUSB_SUCCESS) {
+ return r;
+ }
+
+ usbi_add_pollfd(ctx, transfer_priv->pollable_fd.fd,
+ (short)((transfer->endpoint & LIBUSB_ENDPOINT_IN)?POLLIN:POLLOUT));
+#if !defined(DYNAMIC_FDS)
+ usbi_fd_notification(ctx);
+#endif
+
+ return LIBUSB_SUCCESS;
+}
+
+static int submit_iso_transfer(struct usbi_transfer *itransfer)
+{
+ struct libusb_transfer *transfer = __USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer);
+ struct libusb_context *ctx = DEVICE_CTX(transfer->dev_handle->dev);
+ struct windows_transfer_priv *transfer_priv = usbi_transfer_get_os_priv(itransfer);
+ struct windows_device_priv *priv = __device_priv(transfer->dev_handle->dev);
+ int r;
+
+ r = priv->apib->submit_iso_transfer(itransfer);
+ if (r != LIBUSB_SUCCESS) {
+ return r;
+ }
+
+ usbi_add_pollfd(ctx, transfer_priv->pollable_fd.fd,
+ (short)((transfer->endpoint & LIBUSB_ENDPOINT_IN)?POLLIN:POLLOUT));
+#if !defined(DYNAMIC_FDS)
+ usbi_fd_notification(ctx);
+#endif
+
+ return LIBUSB_SUCCESS;
+}
+
+static int submit_control_transfer(struct usbi_transfer *itransfer)
+{
+ struct libusb_transfer *transfer = __USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer);
+ struct libusb_context *ctx = DEVICE_CTX(transfer->dev_handle->dev);
+ struct windows_transfer_priv *transfer_priv = usbi_transfer_get_os_priv(itransfer);
+ struct windows_device_priv *priv = __device_priv(transfer->dev_handle->dev);
+ int r;
+
+ r = priv->apib->submit_control_transfer(itransfer);
+ if (r != LIBUSB_SUCCESS) {
+ return r;
+ }
+
+ usbi_add_pollfd(ctx, transfer_priv->pollable_fd.fd, POLLIN);
+#if !defined(DYNAMIC_FDS)
+ usbi_fd_notification(ctx);
+#endif
+
+ return LIBUSB_SUCCESS;
+
+}
+
+static int windows_submit_transfer(struct usbi_transfer *itransfer)
+{
+ struct libusb_transfer *transfer = __USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer);
+
+ switch (transfer->type) {
+ case LIBUSB_TRANSFER_TYPE_CONTROL:
+ return submit_control_transfer(itransfer);
+ case LIBUSB_TRANSFER_TYPE_BULK:
+ case LIBUSB_TRANSFER_TYPE_INTERRUPT:
+ return submit_bulk_transfer(itransfer);
+ case LIBUSB_TRANSFER_TYPE_ISOCHRONOUS:
+ return submit_iso_transfer(itransfer);
+ default:
+ usbi_err(TRANSFER_CTX(transfer), "unknown endpoint type %d", transfer->type);
+ return LIBUSB_ERROR_INVALID_PARAM;
+ }
+}
+
+static int windows_abort_control(struct usbi_transfer *itransfer)
+{
+ struct libusb_transfer *transfer = __USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer);
+ struct windows_device_priv *priv = __device_priv(transfer->dev_handle->dev);
+
+ return priv->apib->abort_control(itransfer);
+}
+
+static int windows_abort_transfers(struct usbi_transfer *itransfer)
+{
+ struct libusb_transfer *transfer = __USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer);
+ struct windows_device_priv *priv = __device_priv(transfer->dev_handle->dev);
+
+ return priv->apib->abort_transfers(itransfer);
+}
+
+static int windows_cancel_transfer(struct usbi_transfer *itransfer)
+{
+ struct libusb_transfer *transfer = __USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer);
+#if defined(FORCE_INSTANT_TIMEOUTS)
+ struct windows_transfer_priv *transfer_priv = usbi_transfer_get_os_priv(itransfer);
+
+ // Forces instant overlapped completion on timeouts - use at your own risks
+ if (itransfer->flags & USBI_TRANSFER_TIMED_OUT) {
+ transfer_priv->pollable_fd.overlapped->Internal &= ~STATUS_PENDING;
+ }
+#endif
+ switch (transfer->type) {
+ case LIBUSB_TRANSFER_TYPE_CONTROL:
+ return windows_abort_control(itransfer);
+ case LIBUSB_TRANSFER_TYPE_BULK:
+ case LIBUSB_TRANSFER_TYPE_INTERRUPT:
+ case LIBUSB_TRANSFER_TYPE_ISOCHRONOUS:
+ return windows_abort_transfers(itransfer);
+ default:
+ usbi_err(ITRANSFER_CTX(itransfer), "unknown endpoint type %d", transfer->type);
+ return LIBUSB_ERROR_INVALID_PARAM;
+ }
+}
+
+static void windows_transfer_callback(struct usbi_transfer *itransfer, uint32_t io_result, uint32_t io_size)
+{
+ struct libusb_transfer *transfer = __USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer);
+ struct windows_device_priv *priv = __device_priv(transfer->dev_handle->dev);
+ int status;
+
+ usbi_dbg("handling I/O completion with errcode %d", io_result);
+
+ switch(io_result) {
+ case NO_ERROR:
+ status = priv->apib->copy_transfer_data(itransfer, io_size);
+ break;
+ case ERROR_GEN_FAILURE:
+ usbi_dbg("detected endpoint stall");
+ status = LIBUSB_TRANSFER_STALL;
+ break;
+ case ERROR_SEM_TIMEOUT:
+ usbi_dbg("detected semaphore timeout");
+ status = LIBUSB_TRANSFER_TIMED_OUT;
+ break;
+ case ERROR_OPERATION_ABORTED:
+ if (itransfer->flags & USBI_TRANSFER_TIMED_OUT) {
+ usbi_dbg("detected timeout");
+ status = LIBUSB_TRANSFER_TIMED_OUT;
+ } else {
+ usbi_dbg("detected operation aborted");
+ status = LIBUSB_TRANSFER_CANCELLED;
+ }
+ break;
+ default:
+ usbi_err(ITRANSFER_CTX(itransfer), "detected I/O error: %s", windows_error_str(0));
+ status = LIBUSB_TRANSFER_ERROR;
+ break;
+ }
+ windows_clear_transfer_priv(itransfer); // Cancel polling
+ usbi_handle_transfer_completion(itransfer, status);
+}
+
+static void windows_handle_callback (struct usbi_transfer *itransfer, uint32_t io_result, uint32_t io_size)
+{
+ struct libusb_transfer *transfer = __USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer);
+
+ switch (transfer->type) {
+ case LIBUSB_TRANSFER_TYPE_CONTROL:
+ case LIBUSB_TRANSFER_TYPE_BULK:
+ case LIBUSB_TRANSFER_TYPE_INTERRUPT:
+ case LIBUSB_TRANSFER_TYPE_ISOCHRONOUS:
+ windows_transfer_callback (itransfer, io_result, io_size);
+ break;
+ default:
+ usbi_err(ITRANSFER_CTX(itransfer), "unknown endpoint type %d", transfer->type);
+ }
+}
+
+static int windows_handle_events(struct libusb_context *ctx, struct pollfd *fds, nfds_t nfds, int num_ready)
+{
+ struct windows_transfer_priv* transfer_priv = NULL;
+ nfds_t i = 0;
+ bool found = false;
+ struct usbi_transfer *transfer;
+ DWORD io_size, io_result;
+
+ usbi_mutex_lock(&ctx->open_devs_lock);
+ for (i = 0; i < nfds && num_ready > 0; i++) {
+
+ usbi_dbg("checking fd %d with revents = %04x", fds[i].fd, fds[i].revents);
+
+ if (!fds[i].revents) {
+ continue;
+ }
+
+ num_ready--;
+
+ // Because a Windows OVERLAPPED is used for poll emulation,
+ // a pollable fd is created and stored with each transfer
+ usbi_mutex_lock(&ctx->flying_transfers_lock);
+ list_for_each_entry(transfer, &ctx->flying_transfers, list, struct usbi_transfer) {
+ transfer_priv = usbi_transfer_get_os_priv(transfer);
+ if (transfer_priv->pollable_fd.fd == fds[i].fd) {
+ found = true;
+ break;
+ }
+ }
+ usbi_mutex_unlock(&ctx->flying_transfers_lock);
+
+ if (found) {
+ // Handle async requests that completed synchronously first
+ if (HasOverlappedIoCompletedSync(transfer_priv->pollable_fd.overlapped)) {
+ io_result = NO_ERROR;
+ io_size = (DWORD)transfer_priv->pollable_fd.overlapped->InternalHigh;
+ // Regular async overlapped
+ } else if (GetOverlappedResult(transfer_priv->pollable_fd.handle,
+ transfer_priv->pollable_fd.overlapped, &io_size, false)) {
+ io_result = NO_ERROR;
+ } else {
+ io_result = GetLastError();
+ }
+ usbi_remove_pollfd(ctx, transfer_priv->pollable_fd.fd);
+ // let handle_callback free the event using the transfer wfd
+ // If you don't use the transfer wfd, you run a risk of trying to free a
+ // newly allocated wfd that took the place of the one from the transfer.
+ windows_handle_callback(transfer, io_result, io_size);
+ } else {
+ usbi_err(ctx, "could not find a matching transfer for fd %x", fds[i]);
+ return LIBUSB_ERROR_NOT_FOUND;
+ }
+ }
+
+ usbi_mutex_unlock(&ctx->open_devs_lock);
+ return LIBUSB_SUCCESS;
+}
+
+/*
+ * Monotonic and real time functions
+ */
+unsigned __stdcall windows_clock_gettime_threaded(void* param)
+{
+ LARGE_INTEGER hires_counter, li_frequency;
+ LONG nb_responses;
+ int timer_index;
+
+ // Init - find out if we have access to a monotonic (hires) timer
+ if (!QueryPerformanceFrequency(&li_frequency)) {
+ usbi_dbg("no hires timer available on this platform");
+ hires_frequency = 0;
+ hires_ticks_to_ps = UINT64_C(0);
+ } else {
+ hires_frequency = li_frequency.QuadPart;
+ // The hires frequency can go as high as 4 GHz, so we'll use a conversion
+ // to picoseconds to compute the tv_nsecs part in clock_gettime
+ hires_ticks_to_ps = UINT64_C(1000000000000) / hires_frequency;
+ usbi_dbg("hires timer available (Frequency: %"PRIu64" Hz)", hires_frequency);
+ }
+
+ // Main loop - wait for requests
+ while (1) {
+ timer_index = WaitForMultipleObjects(2, timer_request, FALSE, INFINITE) - WAIT_OBJECT_0;
+ if ( (timer_index != 0) && (timer_index != 1) ) {
+ usbi_dbg("failure to wait on requests: %s", windows_error_str(0));
+ continue;
+ }
+ if (request_count[timer_index] == 0) {
+ // Request already handled
+ ResetEvent(timer_request[timer_index]);
+ // There's still a possiblity that a thread sends a request between the
+ // time we test request_count[] == 0 and we reset the event, in which case
+ // the request would be ignored. The simple solution to that is to test
+ // request_count again and process requests if non zero.
+ if (request_count[timer_index] == 0)
+ continue;
+ }
+ switch (timer_index) {
+ case 0:
+ WaitForSingleObject(timer_mutex, INFINITE);
+ // Requests to this thread are for hires always
+ if (QueryPerformanceCounter(&hires_counter) != 0) {
+ timer_tp.tv_sec = (long)(hires_counter.QuadPart / hires_frequency);
+ timer_tp.tv_nsec = (long)(((hires_counter.QuadPart % hires_frequency)/1000) * hires_ticks_to_ps);
+ } else {
+ // Fallback to real-time if we can't get monotonic value
+ // Note that real-time clock does not wait on the mutex or this thread.
+ windows_clock_gettime(USBI_CLOCK_REALTIME, &timer_tp);
+ }
+ ReleaseMutex(timer_mutex);
+
+ nb_responses = InterlockedExchange((LONG*)&request_count[0], 0);
+ if ( (nb_responses)
+ && (ReleaseSemaphore(timer_response, nb_responses, NULL) == 0) ) {
+ usbi_dbg("unable to release timer semaphore %d: %s", windows_error_str(0));
+ }
+ continue;
+ case 1: // time to quit
+ usbi_dbg("timer thread quitting");
+ return 0;
+ }
+ }
+ usbi_dbg("ERROR: broken timer thread");
+ return 1;
+}
+
+static int windows_clock_gettime(int clk_id, struct timespec *tp)
+{
+ FILETIME filetime;
+ ULARGE_INTEGER rtime;
+ DWORD r;
+ switch(clk_id) {
+ case USBI_CLOCK_MONOTONIC:
+ if (hires_frequency != 0) {
+ while (1) {
+ InterlockedIncrement((LONG*)&request_count[0]);
+ SetEvent(timer_request[0]);
+ r = WaitForSingleObject(timer_response, TIMER_REQUEST_RETRY_MS);
+ switch(r) {
+ case WAIT_OBJECT_0:
+ WaitForSingleObject(timer_mutex, INFINITE);
+ *tp = timer_tp;
+ ReleaseMutex(timer_mutex);
+ return LIBUSB_SUCCESS;
+ case WAIT_TIMEOUT:
+ usbi_dbg("could not obtain a timer value within reasonable timeframe - too much load?");
+ break; // Retry until successful
+ default:
+ usbi_dbg("WaitForSingleObject failed: %s", windows_error_str(0));
+ return LIBUSB_ERROR_OTHER;
+ }
+ }
+ }
+ // Fall through and return real-time if monotonic was not detected @ timer init
+ case USBI_CLOCK_REALTIME:
+ // We follow http://msdn.microsoft.com/en-us/library/ms724928%28VS.85%29.aspx
+ // with a predef epoch_time to have an epoch that starts at 1970.01.01 00:00
+ // Note however that our resolution is bounded by the Windows system time
+ // functions and is at best of the order of 1 ms (or, usually, worse)
+ GetSystemTimeAsFileTime(&filetime);
+ rtime.LowPart = filetime.dwLowDateTime;
+ rtime.HighPart = filetime.dwHighDateTime;
+ rtime.QuadPart -= epoch_time;
+ tp->tv_sec = (long)(rtime.QuadPart / 10000000);
+ tp->tv_nsec = (long)((rtime.QuadPart % 10000000)*100);
+ return LIBUSB_SUCCESS;
+ default:
+ return LIBUSB_ERROR_INVALID_PARAM;
+ }
+}
+
+
+// NB: MSVC6 does not support named initializers.
+const struct usbi_os_backend windows_backend = {
+ "Windows",
+ windows_init,
+ windows_exit,
+
+ windows_get_device_list,
+ windows_open,
+ windows_close,
+
+ windows_get_device_descriptor,
+ windows_get_active_config_descriptor,
+ windows_get_config_descriptor,
+
+ windows_get_configuration,
+ windows_set_configuration,
+ windows_claim_interface,
+ windows_release_interface,
+
+ windows_set_interface_altsetting,
+ windows_clear_halt,
+ windows_reset_device,
+
+ windows_kernel_driver_active,
+ windows_detach_kernel_driver,
+ windows_attach_kernel_driver,
+
+ windows_destroy_device,
+
+ windows_submit_transfer,
+ windows_cancel_transfer,
+ windows_clear_transfer_priv,
+
+ windows_handle_events,
+
+ windows_clock_gettime,
+#if defined(USBI_TIMERFD_AVAILABLE)
+ NULL,
+#endif
+ sizeof(struct windows_device_priv),
+ sizeof(struct windows_device_handle_priv),
+ sizeof(struct windows_transfer_priv),
+ 0,
+};
+
+
+/*
+ * USB API backends
+ */
+static int unsupported_init(struct libusb_context *ctx) {
+ return LIBUSB_SUCCESS;
+}
+static int unsupported_exit(void) {
+ return LIBUSB_SUCCESS;
+}
+static int unsupported_open(struct libusb_device_handle *dev_handle) {
+ PRINT_UNSUPPORTED_API(open);
+}
+static void unsupported_close(struct libusb_device_handle *dev_handle) {
+ usbi_dbg("unsupported API call for 'close'");
+}
+static int unsupported_claim_interface(struct libusb_device_handle *dev_handle, int iface) {
+ PRINT_UNSUPPORTED_API(claim_interface);
+}
+static int unsupported_set_interface_altsetting(struct libusb_device_handle *dev_handle, int iface, int altsetting) {
+ PRINT_UNSUPPORTED_API(set_interface_altsetting);
+}
+static int unsupported_release_interface(struct libusb_device_handle *dev_handle, int iface) {
+ PRINT_UNSUPPORTED_API(release_interface);
+}
+static int unsupported_clear_halt(struct libusb_device_handle *dev_handle, unsigned char endpoint) {
+ PRINT_UNSUPPORTED_API(clear_halt);
+}
+static int unsupported_reset_device(struct libusb_device_handle *dev_handle) {
+ PRINT_UNSUPPORTED_API(reset_device);
+}
+static int unsupported_submit_bulk_transfer(struct usbi_transfer *itransfer) {
+ PRINT_UNSUPPORTED_API(submit_bulk_transfer);
+}
+static int unsupported_submit_iso_transfer(struct usbi_transfer *itransfer) {
+ PRINT_UNSUPPORTED_API(submit_iso_transfer);
+}
+static int unsupported_submit_control_transfer(struct usbi_transfer *itransfer) {
+ PRINT_UNSUPPORTED_API(submit_control_transfer);
+}
+static int unsupported_abort_control(struct usbi_transfer *itransfer) {
+ PRINT_UNSUPPORTED_API(abort_control);
+}
+static int unsupported_abort_transfers(struct usbi_transfer *itransfer) {
+ PRINT_UNSUPPORTED_API(abort_transfers);
+}
+static int unsupported_copy_transfer_data(struct usbi_transfer *itransfer, uint32_t io_size) {
+ PRINT_UNSUPPORTED_API(copy_transfer_data);
+}
+
+const char* composite_driver_names[] = {"usbccgp"};
+const char* winusb_driver_names[] = {"WinUSB"};
+const char* hid_driver_names[] = {"HidUsb", "mouhid", "kbdhid"};
+const struct windows_usb_api_backend usb_api_backend[USB_API_MAX] = {
+ {
+ USB_API_UNSUPPORTED,
+ &CLASS_GUID_UNSUPPORTED,
+ NULL,
+ 0,
+ unsupported_init,
+ unsupported_exit,
+ unsupported_open,
+ unsupported_close,
+ unsupported_claim_interface,
+ unsupported_set_interface_altsetting,
+ unsupported_release_interface,
+ unsupported_clear_halt,
+ unsupported_reset_device,
+ unsupported_submit_bulk_transfer,
+ unsupported_submit_iso_transfer,
+ unsupported_submit_control_transfer,
+ unsupported_abort_control,
+ unsupported_abort_transfers,
+ unsupported_copy_transfer_data,
+ }, {
+ USB_API_COMPOSITE,
+ &CLASS_GUID_COMPOSITE,
+ composite_driver_names,
+ 1,
+ composite_init,
+ composite_exit,
+ composite_open,
+ composite_close,
+ composite_claim_interface,
+ composite_set_interface_altsetting,
+ composite_release_interface,
+ composite_clear_halt,
+ composite_reset_device,
+ composite_submit_bulk_transfer,
+ composite_submit_iso_transfer,
+ composite_submit_control_transfer,
+ composite_abort_control,
+ composite_abort_transfers,
+ composite_copy_transfer_data,
+ }, {
+ USB_API_WINUSB,
+ &CLASS_GUID_LIBUSB_WINUSB,
+ winusb_driver_names,
+ 1,
+ winusb_init,
+ winusb_exit,
+ winusb_open,
+ winusb_close,
+ winusb_claim_interface,
+ winusb_set_interface_altsetting,
+ winusb_release_interface,
+ winusb_clear_halt,
+ winusb_reset_device,
+ winusb_submit_bulk_transfer,
+ unsupported_submit_iso_transfer,
+ winusb_submit_control_transfer,
+ winusb_abort_control,
+ winusb_abort_transfers,
+ winusb_copy_transfer_data,
+ }, {
+ USB_API_HID,
+ &CLASS_GUID_HID,
+ hid_driver_names,
+ 3,
+ hid_init,
+ hid_exit,
+ hid_open,
+ hid_close,
+ hid_claim_interface,
+ hid_set_interface_altsetting,
+ hid_release_interface,
+ hid_clear_halt,
+ hid_reset_device,
+ hid_submit_bulk_transfer,
+ unsupported_submit_iso_transfer,
+ hid_submit_control_transfer,
+ hid_abort_transfers,
+ hid_abort_transfers,
+ hid_copy_transfer_data,
+ },
+};
+
+
+/*
+ * WinUSB API functions
+ */
+static int winusb_init(struct libusb_context *ctx)
+{
+ DLL_LOAD(winusb.dll, WinUsb_Initialize, TRUE);
+ DLL_LOAD(winusb.dll, WinUsb_Free, TRUE);
+ DLL_LOAD(winusb.dll, WinUsb_GetAssociatedInterface, TRUE);
+ DLL_LOAD(winusb.dll, WinUsb_GetDescriptor, TRUE);
+ DLL_LOAD(winusb.dll, WinUsb_QueryInterfaceSettings, TRUE);
+ DLL_LOAD(winusb.dll, WinUsb_QueryDeviceInformation, TRUE);
+ DLL_LOAD(winusb.dll, WinUsb_SetCurrentAlternateSetting, TRUE);
+ DLL_LOAD(winusb.dll, WinUsb_GetCurrentAlternateSetting, TRUE);
+ DLL_LOAD(winusb.dll, WinUsb_QueryPipe, TRUE);
+ DLL_LOAD(winusb.dll, WinUsb_SetPipePolicy, TRUE);
+ DLL_LOAD(winusb.dll, WinUsb_GetPipePolicy, TRUE);
+ DLL_LOAD(winusb.dll, WinUsb_ReadPipe, TRUE);
+ DLL_LOAD(winusb.dll, WinUsb_WritePipe, TRUE);
+ DLL_LOAD(winusb.dll, WinUsb_ControlTransfer, TRUE);
+ DLL_LOAD(winusb.dll, WinUsb_ResetPipe, TRUE);
+ DLL_LOAD(winusb.dll, WinUsb_AbortPipe, TRUE);
+ DLL_LOAD(winusb.dll, WinUsb_FlushPipe, TRUE);
+
+ api_winusb_available = true;
+ return LIBUSB_SUCCESS;
+}
+
+static int winusb_exit(void)
+{
+ return LIBUSB_SUCCESS;
+}
+
+// NB: open and close must ensure that they only handle interface of
+// the right API type, as these functions can be called wholesale from
+// composite_open(), with interfaces belonging to different APIs
+static int winusb_open(struct libusb_device_handle *dev_handle)
+{
+ struct libusb_context *ctx = DEVICE_CTX(dev_handle->dev);
+ struct windows_device_priv *priv = __device_priv(dev_handle->dev);
+ struct windows_device_handle_priv *handle_priv = __device_handle_priv(dev_handle);
+
+ HANDLE file_handle;
+ int i;
+
+ CHECK_WINUSB_AVAILABLE;
+
+ // WinUSB requires a seperate handle for each interface
+ for (i = 0; i < USB_MAXINTERFACES; i++) {
+ if ( (priv->usb_interface[i].path != NULL)
+ && (priv->usb_interface[i].apib->id == USB_API_WINUSB) ) {
+ file_handle = CreateFileA(priv->usb_interface[i].path, GENERIC_WRITE | GENERIC_READ, FILE_SHARE_WRITE | FILE_SHARE_READ,
+ NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL | FILE_FLAG_OVERLAPPED, NULL);
+ if (file_handle == INVALID_HANDLE_VALUE) {
+ usbi_err(ctx, "could not open device %s (interface %d): %s", priv->path, i, windows_error_str(0));
+ switch(GetLastError()) {
+ case ERROR_FILE_NOT_FOUND: // The device was disconnected
+ return LIBUSB_ERROR_NO_DEVICE;
+ case ERROR_ACCESS_DENIED:
+ return LIBUSB_ERROR_ACCESS;
+ default:
+ return LIBUSB_ERROR_IO;
+ }
+ }
+ handle_priv->interface_handle[i].dev_handle = file_handle;
+ }
+ }
+
+ return LIBUSB_SUCCESS;
+}
+
+static void winusb_close(struct libusb_device_handle *dev_handle)
+{
+ struct windows_device_handle_priv *handle_priv = __device_handle_priv(dev_handle);
+ struct windows_device_priv *priv = __device_priv(dev_handle->dev);
+ HANDLE file_handle;
+ int i;
+
+ if (!api_winusb_available)
+ return;
+
+ for (i = 0; i < USB_MAXINTERFACES; i++) {
+ if (priv->usb_interface[i].apib->id == USB_API_WINUSB) {
+ file_handle = handle_priv->interface_handle[i].dev_handle;
+ if ( (file_handle != 0) && (file_handle != INVALID_HANDLE_VALUE)) {
+ CloseHandle(file_handle);
+ }
+ }
+ }
+}
+
+static int winusb_claim_interface(struct libusb_device_handle *dev_handle, int iface)
+{
+ struct libusb_context *ctx = DEVICE_CTX(dev_handle->dev);
+ struct windows_device_handle_priv *handle_priv = __device_handle_priv(dev_handle);
+ struct windows_device_priv *priv = __device_priv(dev_handle->dev);
+ bool is_composite = (priv->apib->id == USB_API_COMPOSITE);
+ HANDLE file_handle, winusb_handle;
+ USB_INTERFACE_DESCRIPTOR if_desc;
+ UCHAR policy;
+ uint8_t endpoint_address;
+ int i;
+
+ CHECK_WINUSB_AVAILABLE;
+
+ // interfaces for composite devices are always independent, therefore
+ // "alt" interfaces are only found on non-composite
+ if ((!is_composite) && (iface != 0)) {
+ winusb_handle = handle_priv->interface_handle[0].api_handle;
+ // It is a requirement on Windows that to claim an interface >= 1
+ // on a non-composite WinUSB device, you must first have claimed interface 0
+ if ((winusb_handle == 0) || (winusb_handle == INVALID_HANDLE_VALUE)) {
+#if defined(AUTO_CLAIM)
+ file_handle = handle_priv->interface_handle[0].dev_handle;
+ if (WinUsb_Initialize(file_handle, &winusb_handle)) {
+ handle_priv->interface_handle[0].api_handle = winusb_handle;
+ usbi_warn(ctx, "auto-claimed interface 0 (required to claim %d with WinUSB)", iface);
+ } else {
+ usbi_warn(ctx, "failed to auto-claim interface 0 (required to claim %d with WinUSB)", iface);
+ return LIBUSB_ERROR_ACCESS;
+ }
+#else
+ usbi_warn(ctx, "you must claim interface 0 before you can claim %d with WinUSB", iface);
+ return LIBUSB_ERROR_ACCESS;
+#endif
+ }
+ if (!WinUsb_GetAssociatedInterface(winusb_handle, (UCHAR)(iface-1),
+ &handle_priv->interface_handle[iface].api_handle)) {
+ handle_priv->interface_handle[iface].api_handle = INVALID_HANDLE_VALUE;
+ switch(GetLastError()) {
+ case ERROR_NO_MORE_ITEMS: // invalid iface
+ return LIBUSB_ERROR_NOT_FOUND;
+ case ERROR_BAD_COMMAND: // The device was disconnected
+ return LIBUSB_ERROR_NO_DEVICE;
+ case ERROR_ALREADY_EXISTS: // already claimed
+ return LIBUSB_ERROR_BUSY;
+ default:
+ usbi_err(ctx, "could not claim interface %d: %s", iface, windows_error_str(0));
+ return LIBUSB_ERROR_ACCESS;
+ }
+ }
+ } else {
+ // composite device (independent interfaces) or interface 0
+ winusb_handle = handle_priv->interface_handle[iface].api_handle;
+ file_handle = handle_priv->interface_handle[iface].dev_handle;
+ if ((file_handle == 0) || (file_handle == INVALID_HANDLE_VALUE)) {
+ return LIBUSB_ERROR_NOT_FOUND;
+ }
+
+ if (!WinUsb_Initialize(file_handle, &winusb_handle)) {
+ usbi_err(ctx, "could not access interface %d: %s", iface, windows_error_str(0));
+ handle_priv->interface_handle[iface].api_handle = INVALID_HANDLE_VALUE;
+
+ switch(GetLastError()) {
+ case ERROR_BAD_COMMAND: // The device was disconnected
+ return LIBUSB_ERROR_NO_DEVICE;
+ default:
+ usbi_err(ctx, "could not claim interface %d: %s", iface, windows_error_str(0));
+ return LIBUSB_ERROR_ACCESS;
+ }
+ }
+ handle_priv->interface_handle[iface].api_handle = winusb_handle;
+ }
+ if (!WinUsb_QueryInterfaceSettings(winusb_handle, 0, &if_desc)) {
+ usbi_err(ctx, "could not query interface settings for interface %d: %s", iface, windows_error_str(0));
+ } else if (if_desc.bInterfaceNumber != iface) {
+ usbi_warn(ctx, "program assertion failed - WinUSB interface %d found at position %d",
+ if_desc.bInterfaceNumber, iface);
+ }
+
+ usbi_dbg("claimed interface %d", iface);
+ handle_priv->active_interface = iface;
+
+ // With handle and enpoints set (in parent), we can setup the default
+ // pipe properties (copied from libusb-win32-v1)
+ // see http://download.microsoft.com/download/D/1/D/D1DD7745-426B-4CC3-A269-ABBBE427C0EF/DVC-T705_DDC08.pptx
+ for (i=0; i<priv->usb_interface[iface].nb_endpoints; i++) {
+ endpoint_address = priv->usb_interface[iface].endpoint[i];
+ policy = false;
+ if (!WinUsb_SetPipePolicy(winusb_handle, endpoint_address,
+ SHORT_PACKET_TERMINATE, sizeof(UCHAR), &policy)) {
+ usbi_dbg("failed to disable SHORT_PACKET_TERMINATE for endpoint %02X", endpoint_address);
+ }
+ if (!WinUsb_SetPipePolicy(winusb_handle, endpoint_address,
+ IGNORE_SHORT_PACKETS, sizeof(UCHAR), &policy)) {
+ usbi_dbg("failed to disable IGNORE_SHORT_PACKETS for endpoint %02X", endpoint_address);
+ }
+ if (!WinUsb_SetPipePolicy(winusb_handle, endpoint_address,
+ ALLOW_PARTIAL_READS, sizeof(UCHAR), &policy)) {
+ usbi_dbg("failed to disable ALLOW_PARTIAL_READS for endpoint %02X", endpoint_address);
+ }
+ policy = true;
+ if (!WinUsb_SetPipePolicy(winusb_handle, endpoint_address,
+ AUTO_CLEAR_STALL, sizeof(UCHAR), &policy)) {
+ usbi_dbg("failed to enable AUTO_CLEAR_STALL for endpoint %02X", endpoint_address);
+ }
+ }
+
+ return LIBUSB_SUCCESS;
+}
+
+static int winusb_release_interface(struct libusb_device_handle *dev_handle, int iface)
+{
+ struct windows_device_handle_priv *handle_priv = __device_handle_priv(dev_handle);
+ HANDLE winusb_handle;
+
+ CHECK_WINUSB_AVAILABLE;
+
+ winusb_handle = handle_priv->interface_handle[iface].api_handle;
+ if ((winusb_handle == 0) || (winusb_handle == INVALID_HANDLE_VALUE)) {
+ return LIBUSB_ERROR_NOT_FOUND;
+ }
+
+ WinUsb_Free(winusb_handle);
+
+ return LIBUSB_SUCCESS;
+}
+
+/*
+ * Return the first valid interface (of the same API type), for control transfers
+ */
+static int get_valid_interface(struct libusb_device_handle *dev_handle, int api_id)
+{
+ struct windows_device_handle_priv *handle_priv = __device_handle_priv(dev_handle);
+ struct windows_device_priv *priv = __device_priv(dev_handle->dev);
+ int i;
+
+ if ((api_id < USB_API_WINUSB) || (api_id > USB_API_HID)) {
+ usbi_dbg("unsupported API ID");
+ return -1;
+ }
+
+ for (i=0; i<USB_MAXINTERFACES; i++) {
+ if ( (handle_priv->interface_handle[i].dev_handle != 0)
+ && (handle_priv->interface_handle[i].dev_handle != INVALID_HANDLE_VALUE)
+ && (handle_priv->interface_handle[i].api_handle != 0)
+ && (handle_priv->interface_handle[i].api_handle != INVALID_HANDLE_VALUE)
+ && (priv->usb_interface[i].apib == &usb_api_backend[api_id]) ) {
+ return i;
+ }
+ }
+ return -1;
+}
+
+/*
+ * Lookup interface by endpoint address. -1 if not found
+ */
+static int interface_by_endpoint(struct windows_device_priv *priv,
+ struct windows_device_handle_priv *handle_priv, uint8_t endpoint_address)
+{
+ int i, j;
+ for (i=0; i<USB_MAXINTERFACES; i++) {
+ if (handle_priv->interface_handle[i].api_handle == INVALID_HANDLE_VALUE)
+ continue;
+ if (handle_priv->interface_handle[i].api_handle == 0)
+ continue;
+ if (priv->usb_interface[i].endpoint == NULL)
+ continue;
+ for (j=0; j<priv->usb_interface[i].nb_endpoints; j++) {
+ if (priv->usb_interface[i].endpoint[j] == endpoint_address) {
+ return i;
+ }
+ }
+ }
+ return -1;
+}
+
+static int winusb_submit_control_transfer(struct usbi_transfer *itransfer)
+{
+ struct libusb_transfer *transfer = __USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer);
+ struct libusb_context *ctx = DEVICE_CTX(transfer->dev_handle->dev);
+ struct windows_transfer_priv *transfer_priv = usbi_transfer_get_os_priv(itransfer);
+ struct windows_device_handle_priv *handle_priv = __device_handle_priv(
+ transfer->dev_handle);
+ WINUSB_SETUP_PACKET *setup = (WINUSB_SETUP_PACKET *) transfer->buffer;
+ ULONG size;
+ HANDLE winusb_handle;
+ int current_interface;
+ struct winfd wfd;
+
+ CHECK_WINUSB_AVAILABLE;
+
+ transfer_priv->pollable_fd = INVALID_WINFD;
+ size = transfer->length - LIBUSB_CONTROL_SETUP_SIZE;
+
+ if (size > MAX_CTRL_BUFFER_LENGTH)
+ return LIBUSB_ERROR_INVALID_PARAM;
+
+ current_interface = get_valid_interface(transfer->dev_handle, USB_API_WINUSB);
+ if (current_interface < 0) {
+#if defined(AUTO_CLAIM)
+ if (auto_claim(transfer, ¤t_interface, USB_API_WINUSB) != LIBUSB_SUCCESS) {
+ return LIBUSB_ERROR_NOT_FOUND;
+ }
+#else
+ usbi_warn(ctx, "no interface available for control transfer");
+ return LIBUSB_ERROR_NOT_FOUND;
+#endif
+ }
+
+ usbi_dbg("will use interface %d", current_interface);
+ winusb_handle = handle_priv->interface_handle[current_interface].api_handle;
+
+ wfd = usbi_create_fd(winusb_handle, _O_RDONLY);
+ // Always use the handle returned from usbi_create_fd (wfd.handle)
+ if (wfd.fd < 0) {
+ return LIBUSB_ERROR_NO_MEM;
+ }
+
+ if (!WinUsb_ControlTransfer(wfd.handle, *setup, transfer->buffer + LIBUSB_CONTROL_SETUP_SIZE, size, NULL, wfd.overlapped)) {
+ if(GetLastError() != ERROR_IO_PENDING) {
+ usbi_err(ctx, "WinUsb_ControlTransfer failed: %s", windows_error_str(0));
+ usbi_free_fd(wfd.fd);
+ return LIBUSB_ERROR_IO;
+ }
+ } else {
+ wfd.overlapped->Internal = STATUS_COMPLETED_SYNCHRONOUSLY;
+ wfd.overlapped->InternalHigh = (DWORD)size;
+ }
+
+ // Use priv_transfer to store data needed for async polling
+ transfer_priv->pollable_fd = wfd;
+ transfer_priv->interface_number = (uint8_t)current_interface;
+
+ return LIBUSB_SUCCESS;
+}
+
+static int winusb_set_interface_altsetting(struct libusb_device_handle *dev_handle, int iface, int altsetting)
+{
+ struct libusb_context *ctx = DEVICE_CTX(dev_handle->dev);
+ struct windows_device_handle_priv *handle_priv = __device_handle_priv(dev_handle);
+ HANDLE winusb_handle;
+
+ CHECK_WINUSB_AVAILABLE;
+
+ if (altsetting > 255) {
+ return LIBUSB_ERROR_INVALID_PARAM;
+ }
+
+ winusb_handle = handle_priv->interface_handle[iface].api_handle;
+ if ((winusb_handle == 0) || (winusb_handle == INVALID_HANDLE_VALUE)) {
+ usbi_err(ctx, "interface must be claimed first");
+ return LIBUSB_ERROR_NOT_FOUND;
+ }
+
+ if (!WinUsb_SetCurrentAlternateSetting(winusb_handle, (UCHAR)altsetting)) {
+ usbi_err(ctx, "WinUsb_SetCurrentAlternateSetting failed: %s", windows_error_str(0));
+ return LIBUSB_ERROR_IO;
+ }
+
+ return LIBUSB_SUCCESS;
+}
+
+static int winusb_submit_bulk_transfer(struct usbi_transfer *itransfer)
+{
+ struct libusb_transfer *transfer = __USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer);
+ struct libusb_context *ctx = DEVICE_CTX(transfer->dev_handle->dev);
+ struct windows_transfer_priv *transfer_priv = usbi_transfer_get_os_priv(itransfer);
+ struct windows_device_handle_priv *handle_priv = __device_handle_priv(transfer->dev_handle);
+ struct windows_device_priv *priv = __device_priv(transfer->dev_handle->dev);
+ HANDLE winusb_handle;
+ bool direction_in, ret;
+ int current_interface;
+ struct winfd wfd;
+
+ CHECK_WINUSB_AVAILABLE;
+
+ transfer_priv->pollable_fd = INVALID_WINFD;
+
+ current_interface = interface_by_endpoint(priv, handle_priv, transfer->endpoint);
+ if (current_interface < 0) {
+ usbi_err(ctx, "unable to match endpoint to an open interface - cancelling transfer");
+ return LIBUSB_ERROR_NOT_FOUND;
+ }
+
+ usbi_dbg("matched endpoint %02X with interface %d", transfer->endpoint, current_interface);
+
+ winusb_handle = handle_priv->interface_handle[current_interface].api_handle;
+ direction_in = transfer->endpoint & LIBUSB_ENDPOINT_IN;
+
+ wfd = usbi_create_fd(winusb_handle, direction_in?_O_RDONLY:_O_WRONLY);
+ // Always use the handle returned from usbi_create_fd (wfd.handle)
+ if (wfd.fd < 0) {
+ return LIBUSB_ERROR_NO_MEM;
+ }
+
+ if (direction_in) {
+ usbi_dbg("reading %d bytes", transfer->length);
+ ret = WinUsb_ReadPipe(wfd.handle, transfer->endpoint, transfer->buffer, transfer->length, NULL, wfd.overlapped);
+ } else {
+ usbi_dbg("writing %d bytes", transfer->length);
+ ret = WinUsb_WritePipe(wfd.handle, transfer->endpoint, transfer->buffer, transfer->length, NULL, wfd.overlapped);
+ }
+ if (!ret) {
+ if(GetLastError() != ERROR_IO_PENDING) {
+ usbi_err(ctx, "WinUsb_Pipe Transfer failed: %s", windows_error_str(0));
+ usbi_free_fd(wfd.fd);
+ return LIBUSB_ERROR_IO;
+ }
+ } else {
+ wfd.overlapped->Internal = STATUS_COMPLETED_SYNCHRONOUSLY;
+ wfd.overlapped->InternalHigh = (DWORD)transfer->length;
+ }
+
+ transfer_priv->pollable_fd = wfd;
+ transfer_priv->interface_number = (uint8_t)current_interface;
+
+ return LIBUSB_SUCCESS;
+}
+
+static int winusb_clear_halt(struct libusb_device_handle *dev_handle, unsigned char endpoint)
+{
+ struct libusb_context *ctx = DEVICE_CTX(dev_handle->dev);
+ struct windows_device_handle_priv *handle_priv = __device_handle_priv(dev_handle);
+ struct windows_device_priv *priv = __device_priv(dev_handle->dev);
+ HANDLE winusb_handle;
+ int current_interface;
+
+ CHECK_WINUSB_AVAILABLE;
+
+ current_interface = interface_by_endpoint(priv, handle_priv, endpoint);
+ if (current_interface < 0) {
+ usbi_err(ctx, "unable to match endpoint to an open interface - cannot clear");
+ return LIBUSB_ERROR_NOT_FOUND;
+ }
+
+ usbi_dbg("matched endpoint %02X with interface %d", endpoint, current_interface);
+ winusb_handle = handle_priv->interface_handle[current_interface].api_handle;
+
+ if (!WinUsb_ResetPipe(winusb_handle, endpoint)) {
+ usbi_err(ctx, "WinUsb_ResetPipe failed: %s", windows_error_str(0));
+ return LIBUSB_ERROR_NO_DEVICE;
+ }
+
+ return LIBUSB_SUCCESS;
+}
+
+/*
+ * from http://www.winvistatips.com/winusb-bugchecks-t335323.html (confirmed
+ * through testing as well):
+ * "You can not call WinUsb_AbortPipe on control pipe. You can possibly cancel
+ * the control transfer using CancelIo"
+ */
+static int winusb_abort_control(struct usbi_transfer *itransfer)
+{
+ // Cancelling of the I/O is done in the parent
+ return LIBUSB_SUCCESS;
+}
+
+static int winusb_abort_transfers(struct usbi_transfer *itransfer)
+{
+ struct libusb_transfer *transfer = __USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer);
+ struct libusb_context *ctx = DEVICE_CTX(transfer->dev_handle->dev);
+ struct windows_device_handle_priv *handle_priv = __device_handle_priv(transfer->dev_handle);
+ struct windows_transfer_priv *transfer_priv = usbi_transfer_get_os_priv(itransfer);
+ HANDLE winusb_handle;
+ int current_interface;
+
+ CHECK_WINUSB_AVAILABLE;
+
+ current_interface = transfer_priv->interface_number;
+ if ((current_interface < 0) || (current_interface >= USB_MAXINTERFACES)) {
+ usbi_err(ctx, "program assertion failed: invalid interface_number");
+ return LIBUSB_ERROR_NOT_FOUND;
+ }
+ usbi_dbg("will use interface %d", current_interface);
+
+ winusb_handle = handle_priv->interface_handle[current_interface].api_handle;
+
+ if (!WinUsb_AbortPipe(winusb_handle, transfer->endpoint)) {
+ usbi_err(ctx, "WinUsb_AbortPipe failed: %s", windows_error_str(0));
+ return LIBUSB_ERROR_NO_DEVICE;
+ }
+
+ return LIBUSB_SUCCESS;
+}
+
+/*
+ * from the "How to Use WinUSB to Communicate with a USB Device" Microsoft white paper
+ * (http://www.microsoft.com/whdc/connect/usb/winusb_howto.mspx):
+ * "WinUSB does not support host-initiated reset port and cycle port operations" and
+ * IOCTL_INTERNAL_USB_CYCLE_PORT is only available in kernel mode and the
+ * IOCTL_USB_HUB_CYCLE_PORT ioctl was removed from Vista => the best we can do is
+ * cycle the pipes (and even then, the control pipe can not be reset using WinUSB)
+ */
+// TODO (2nd official release): see if we can force eject the device and redetect it (reuse hotplug?)
+static int winusb_reset_device(struct libusb_device_handle *dev_handle)
+{
+ struct libusb_context *ctx = DEVICE_CTX(dev_handle->dev);
+ struct windows_device_handle_priv *handle_priv = __device_handle_priv(dev_handle);
+ struct windows_device_priv *priv = __device_priv(dev_handle->dev);
+ struct winfd wfd;
+ HANDLE winusb_handle;
+ int i, j;
+
+ CHECK_WINUSB_AVAILABLE;
+
+ // Reset any available pipe (except control)
+ for (i=0; i<USB_MAXINTERFACES; i++) {
+ winusb_handle = handle_priv->interface_handle[i].api_handle;
+ for (wfd = handle_to_winfd(winusb_handle); wfd.fd > 0;)
+ {
+ // Cancel any pollable I/O
+ usbi_remove_pollfd(ctx, wfd.fd);
+ usbi_free_fd(wfd.fd);
+ wfd = handle_to_winfd(winusb_handle);
+ }
+
+ if ( (winusb_handle != 0) && (winusb_handle != INVALID_HANDLE_VALUE)) {
+ for (j=0; j<priv->usb_interface[i].nb_endpoints; j++) {
+ usbi_dbg("resetting ep %02X", priv->usb_interface[i].endpoint[j]);
+ if (!WinUsb_AbortPipe(winusb_handle, priv->usb_interface[i].endpoint[j])) {
+ usbi_err(ctx, "WinUsb_AbortPipe (pipe address %02X) failed: %s",
+ priv->usb_interface[i].endpoint[j], windows_error_str(0));
+ }
+ // FlushPipe seems to fail on OUT pipes
+ if ( (priv->usb_interface[i].endpoint[j] & LIBUSB_ENDPOINT_IN)
+ && (!WinUsb_FlushPipe(winusb_handle, priv->usb_interface[i].endpoint[j])) ) {
+ usbi_err(ctx, "WinUsb_FlushPipe (pipe address %02X) failed: %s",
+ priv->usb_interface[i].endpoint[j], windows_error_str(0));
+ }
+ if (!WinUsb_ResetPipe(winusb_handle, priv->usb_interface[i].endpoint[j])) {
+ usbi_err(ctx, "WinUsb_ResetPipe (pipe address %02X) failed: %s",
+ priv->usb_interface[i].endpoint[j], windows_error_str(0));
+ }
+ }
+ }
+ }
+
+ return LIBUSB_SUCCESS;
+}
+
+static int winusb_copy_transfer_data(struct usbi_transfer *itransfer, uint32_t io_size)
+{
+ itransfer->transferred += io_size;
+ return LIBUSB_TRANSFER_COMPLETED;
+}
+
+/*
+ * Internal HID Support functions (from libusb-win32)
+ * Note that functions that complete data transfer synchronously must return
+ * LIBUSB_COMPLETED instead of LIBUSB_SUCCESS
+ */
+static int _hid_get_hid_descriptor(struct hid_device_priv* dev, void *data, size_t *size);
+static int _hid_get_report_descriptor(struct hid_device_priv* dev, void *data, size_t *size);
+
+static int _hid_wcslen(WCHAR *str)
+{
+ int i = 0;
+ while (str[i] && (str[i] != 0x409)) {
+ i++;
+ }
+ return i;
+}
+
+static int _hid_get_device_descriptor(struct hid_device_priv* dev, void *data, size_t *size)
+{
+ struct libusb_device_descriptor d;
+
+ d.bLength = LIBUSB_DT_DEVICE_SIZE;
+ d.bDescriptorType = LIBUSB_DT_DEVICE;
+ d.bcdUSB = 0x0200; /* 2.00 */
+ d.bDeviceClass = 0;
+ d.bDeviceSubClass = 0;
+ d.bDeviceProtocol = 0;
+ d.bMaxPacketSize0 = 64; /* fix this! */
+ d.idVendor = (uint16_t)dev->vid;
+ d.idProduct = (uint16_t)dev->pid;
+ d.bcdDevice = 0x0100;
+ d.iManufacturer = dev->string_index[0];
+ d.iProduct = dev->string_index[1];
+ d.iSerialNumber = dev->string_index[2];
+ d.bNumConfigurations = 1;
+
+ if (*size > LIBUSB_DT_DEVICE_SIZE)
+ *size = LIBUSB_DT_DEVICE_SIZE;
+ memcpy(data, &d, *size);
+ return LIBUSB_COMPLETED;
+}
+
+static int _hid_get_config_descriptor(struct hid_device_priv* dev, void *data, size_t *size)
+{
+ char num_endpoints = 0;
+ size_t config_total_len = 0;
+ char tmp[HID_MAX_CONFIG_DESC_SIZE];
+ struct libusb_config_descriptor *cd;
+ struct libusb_interface_descriptor *id;
+ struct libusb_hid_descriptor *hd;
+ struct libusb_endpoint_descriptor *ed;
+ size_t tmp_size;
+
+ if (dev->input_report_size)
+ num_endpoints++;
+ if (dev->output_report_size)
+ num_endpoints++;
+
+ config_total_len = LIBUSB_DT_CONFIG_SIZE + LIBUSB_DT_INTERFACE_SIZE
+ + LIBUSB_DT_HID_SIZE + num_endpoints * LIBUSB_DT_ENDPOINT_SIZE;
+
+
+ cd = (struct libusb_config_descriptor *)tmp;
+ id = (struct libusb_interface_descriptor *)(tmp + LIBUSB_DT_CONFIG_SIZE);
+ hd = (struct libusb_hid_descriptor *)(tmp + LIBUSB_DT_CONFIG_SIZE
+ + LIBUSB_DT_INTERFACE_SIZE);
+ ed = (struct libusb_endpoint_descriptor *)(tmp + LIBUSB_DT_CONFIG_SIZE
+ + LIBUSB_DT_INTERFACE_SIZE
+ + LIBUSB_DT_HID_SIZE);
+
+ cd->bLength = LIBUSB_DT_CONFIG_SIZE;
+ cd->bDescriptorType = LIBUSB_DT_CONFIG;
+ cd->wTotalLength = (uint16_t) config_total_len;
+ cd->bNumInterfaces = 1;
+ cd->bConfigurationValue = 1;
+ cd->iConfiguration = 0;
+ cd->bmAttributes = 1 << 7; /* bus powered */
+ cd->MaxPower = 50;
+
+ id->bLength = LIBUSB_DT_INTERFACE_SIZE;
+ id->bDescriptorType = LIBUSB_DT_INTERFACE;
+ id->bInterfaceNumber = 0;
+ id->bAlternateSetting = 0;
+ id->bNumEndpoints = num_endpoints;
+ id->bInterfaceClass = 3;
+ id->bInterfaceSubClass = 0;
+ id->bInterfaceProtocol = 0;
+ id->iInterface = 0;
+
+ tmp_size = LIBUSB_DT_HID_SIZE;
+ _hid_get_hid_descriptor(dev, hd, &tmp_size);
+
+ if (dev->input_report_size) {
+ ed->bLength = LIBUSB_DT_ENDPOINT_SIZE;
+ ed->bDescriptorType = LIBUSB_DT_ENDPOINT;
+ ed->bEndpointAddress = HID_IN_EP;
+ ed->bmAttributes = 3;
+ ed->wMaxPacketSize = dev->input_report_size - 1;
+ ed->bInterval = 10;
+
+ ed++;
+ }
+
+ if (dev->output_report_size) {
+ ed->bLength = LIBUSB_DT_ENDPOINT_SIZE;
+ ed->bDescriptorType = LIBUSB_DT_ENDPOINT;
+ ed->bEndpointAddress = HID_OUT_EP;
+ ed->bmAttributes = 3;
+ ed->wMaxPacketSize = dev->output_report_size - 1;
+ ed->bInterval = 10;
+ }
+
+ if (*size > config_total_len)
+ *size = config_total_len;
+ memcpy(data, tmp, *size);
+ return LIBUSB_COMPLETED;
+}
+
+static int _hid_get_string_descriptor(struct hid_device_priv* dev, int index,
+ void *data, size_t *size)
+{
+ void *tmp = NULL;
+ size_t tmp_size = 0;
+ int i;
+
+ /* language ID, EN-US */
+ char string_langid[] = {
+ 0x09,
+ 0x04
+ };
+
+ if ((*size < 2) || (*size > 255)) {
+ return LIBUSB_ERROR_OVERFLOW;
+ }
+
+ if (index == 0) {
+ tmp = string_langid;
+ tmp_size = sizeof(string_langid)+2;
+ } else {
+ for (i=0; i<3; i++) {
+ if (index == (dev->string_index[i])) {
+ tmp = dev->string[i];
+ tmp_size = (_hid_wcslen(dev->string[i])+1) * sizeof(WCHAR);
+ break;
+ }
+ }
+ if (i == 3) { // not found
+ return LIBUSB_ERROR_INVALID_PARAM;
+ }
+ }
+
+ if(!tmp_size) {
+ return LIBUSB_ERROR_INVALID_PARAM;
+ }
+
+ if (tmp_size < *size) {
+ *size = tmp_size;
+ }
+ // 2 byte header
+ ((uint8_t*)data)[0] = (uint8_t)*size;
+ ((uint8_t*)data)[1] = LIBUSB_DT_STRING;
+ memcpy((uint8_t*)data+2, tmp, *size-2);
+ return LIBUSB_COMPLETED;
+}
+
+static int _hid_get_hid_descriptor(struct hid_device_priv* dev, void *data, size_t *size)
+{
+ struct libusb_hid_descriptor d;
+ uint8_t tmp[MAX_HID_DESCRIPTOR_SIZE];
+ size_t report_len = MAX_HID_DESCRIPTOR_SIZE;
+
+ _hid_get_report_descriptor(dev, tmp, &report_len);
+
+ d.bLength = LIBUSB_DT_HID_SIZE;
+ d.bDescriptorType = LIBUSB_DT_HID;
+ d.bcdHID = 0x0110; /* 1.10 */
+ d.bCountryCode = 0;
+ d.bNumDescriptors = 1;
+ d.bClassDescriptorType = LIBUSB_DT_REPORT;
+ d.wClassDescriptorLength = (uint16_t)report_len;
+
+ if (*size > LIBUSB_DT_HID_SIZE)
+ *size = LIBUSB_DT_HID_SIZE;
+ memcpy(data, &d, *size);
+ return LIBUSB_COMPLETED;
+}
+
+static int _hid_get_report_descriptor(struct hid_device_priv* dev, void *data, size_t *size)
+{
+ uint8_t d[MAX_HID_DESCRIPTOR_SIZE];
+ size_t i = 0;
+
+ /* usage page (0xFFA0 == vendor defined) */
+ d[i++] = 0x06; d[i++] = 0xA0; d[i++] = 0xFF;
+ /* usage (vendor defined) */
+ d[i++] = 0x09; d[i++] = 0x01;
+ /* start collection (application) */
+ d[i++] = 0xA1; d[i++] = 0x01;
+ /* input report */
+ if (dev->input_report_size) {
+ /* usage (vendor defined) */
+ d[i++] = 0x09; d[i++] = 0x01;
+ /* logical minimum (0) */
+ d[i++] = 0x15; d[i++] = 0x00;
+ /* logical maximum (255) */
+ d[i++] = 0x25; d[i++] = 0xFF;
+ /* report size (8 bits) */
+ d[i++] = 0x75; d[i++] = 0x08;
+ /* report count */
+ d[i++] = 0x95; d[i++] = (uint8_t)dev->input_report_size - 1;
+ /* input (data, variable, absolute) */
+ d[i++] = 0x81; d[i++] = 0x00;
+ }
+ /* output report */
+ if (dev->output_report_size) {
+ /* usage (vendor defined) */
+ d[i++] = 0x09; d[i++] = 0x02;
+ /* logical minimum (0) */
+ d[i++] = 0x15; d[i++] = 0x00;
+ /* logical maximum (255) */
+ d[i++] = 0x25; d[i++] = 0xFF;
+ /* report size (8 bits) */
+ d[i++] = 0x75; d[i++] = 0x08;
+ /* report count */
+ d[i++] = 0x95; d[i++] = (uint8_t)dev->output_report_size - 1;
+ /* output (data, variable, absolute) */
+ d[i++] = 0x91; d[i++] = 0x00;
+ }
+ /* feature report */
+ if (dev->feature_report_size) {
+ /* usage (vendor defined) */
+ d[i++] = 0x09; d[i++] = 0x03;
+ /* logical minimum (0) */
+ d[i++] = 0x15; d[i++] = 0x00;
+ /* logical maximum (255) */
+ d[i++] = 0x25; d[i++] = 0xFF;
+ /* report size (8 bits) */
+ d[i++] = 0x75; d[i++] = 0x08;
+ /* report count */
+ d[i++] = 0x95; d[i++] = (uint8_t)dev->feature_report_size - 1;
+ /* feature (data, variable, absolute) */
+ d[i++] = 0xb2; d[i++] = 0x02; d[i++] = 0x01;
+ }
+
+ /* end collection */
+ d[i++] = 0xC0;
+
+ if (*size > i)
+ *size = i;
+ memcpy(data, d, *size);
+ return LIBUSB_COMPLETED;
+}
+
+static int _hid_get_descriptor(struct hid_device_priv* dev, HANDLE hid_handle, int recipient,
+ int type, int index, void *data, size_t *size)
+{
+ switch(type) {
+ case LIBUSB_DT_DEVICE:
+ usbi_dbg("LIBUSB_DT_DEVICE");
+ return _hid_get_device_descriptor(dev, data, size);
+ case LIBUSB_DT_CONFIG:
+ usbi_dbg("LIBUSB_DT_CONFIG");
+ if (!index)
+ return _hid_get_config_descriptor(dev, data, size);
+ return LIBUSB_ERROR_INVALID_PARAM;
+ case LIBUSB_DT_STRING:
+ usbi_dbg("LIBUSB_DT_STRING");
+ return _hid_get_string_descriptor(dev, index, data, size);
+ case LIBUSB_DT_HID:
+ usbi_dbg("LIBUSB_DT_HID");
+ if (!index)
+ return _hid_get_hid_descriptor(dev, data, size);
+ return LIBUSB_ERROR_INVALID_PARAM;
+ case LIBUSB_DT_REPORT:
+ usbi_dbg("LIBUSB_DT_REPORT");
+ if (!index)
+ return _hid_get_report_descriptor(dev, data, size);
+ return LIBUSB_ERROR_INVALID_PARAM;
+ case LIBUSB_DT_PHYSICAL:
+ usbi_dbg("LIBUSB_DT_PHYSICAL");
+ if (HidD_GetPhysicalDescriptor(hid_handle, data, (ULONG)*size))
+ return LIBUSB_COMPLETED;
+ return LIBUSB_ERROR_OTHER;
+ }
+ usbi_dbg("unsupported");
+ return LIBUSB_ERROR_INVALID_PARAM;
+}
+
+static int _hid_get_report(struct hid_device_priv* dev, HANDLE hid_handle, int id, void *data,
+ struct windows_transfer_priv *tp, size_t *size, OVERLAPPED* overlapped)
+{
+ uint8_t *buf;
+ DWORD read_size, expected_size = (DWORD)*size;
+ int r = LIBUSB_SUCCESS;
+
+ if (tp->hid_buffer != NULL) {
+ usbi_dbg("program assertion failed: hid_buffer is not NULL");
+ }
+
+ if ((*size == 0) || (*size > MAX_HID_REPORT_SIZE)) {
+ usbi_dbg("invalid size (%d)", *size);
+ return LIBUSB_ERROR_INVALID_PARAM;
+ }
+
+ // When report IDs are not in use, add an extra byte for the report ID
+ if (id==0) {
+ expected_size++;
+ }
+
+ // Add a trailing byte to detect overflows
+ buf = (uint8_t*)calloc(expected_size+1, 1);
+ if (buf == NULL) {
+ return LIBUSB_ERROR_NO_MEM;
+ }
+ buf[0] = (uint8_t)id; // Must be set always
+ usbi_dbg("report ID: 0x%02X", buf[0]);
+
+ // NB: HidD_GetInputReport sends an request to the device for the Input Report
+ // (and blocks until response) whereas ReadFile waits for input to be generated
+ // asynchronously
+#if !defined(USE_HIDD_FOR_REPORTS)
+ // Use ReadFile instead of HidD_GetInputReport for async I/O
+ // TODO: send a request paquet?
+ tp->hid_expected_size = expected_size;
+ if (!ReadFile(hid_handle, buf, expected_size+1, &read_size, overlapped)) {
+ if (GetLastError() != ERROR_IO_PENDING) {
+ usbi_dbg("Failed to Read HID Input Report: %s", windows_error_str(0));
+ safe_free(buf);
+ return LIBUSB_ERROR_IO;
+ }
+ // Asynchronous wait
+ tp->hid_buffer = buf;
+ tp->hid_dest = data; // copy dest, as not necessarily the start of the transfer buffer
+ return LIBUSB_SUCCESS;
+ }
+#else
+ // Synchronous request for the Input Report
+ if (!HidD_GetInputReport(hid_handle, buf, expected_size)) {
+ usbi_dbg("Failed to Read HID Input Report: %s", windows_error_str(0));
+ safe_free(buf);
+ return LIBUSB_ERROR_IO;
+ }
+ read_size = expected_size; // Can't detect overflows with this API
+#endif
+ // Transfer completed synchronously => copy and discard extra buffer
+ if (read_size == 0) {
+ usbi_dbg("program assertion failed - read completed synchronously, but no data was read");
+ *size = 0;
+ } else {
+ if (buf[0] != id) {
+ usbi_warn(NULL, "mismatched report ID (data is %02X, parameter is %02X)", buf[0], id);
+ }
+ if ((size_t)read_size > expected_size) {
+ r = LIBUSB_ERROR_OVERFLOW;
+ usbi_dbg("OVERFLOW!");
+ } else {
+ r = LIBUSB_COMPLETED;
+ }
+
+ if (id == 0) {
+ // Discard report ID
+ *size = MIN((size_t)read_size-1, *size);
+ memcpy(data, buf+1, *size);
+ } else {
+ *size = MIN((size_t)read_size, *size);
+ memcpy(data, buf, *size);
+ }
+ }
+ safe_free(buf);
+ return r;
+}
+
+static int _hid_set_report(struct hid_device_priv* dev, HANDLE hid_handle, int id, void *data,
+ struct windows_transfer_priv *tp, size_t *size, OVERLAPPED* overlapped)
+{
+ uint8_t *buf = NULL;
+ DWORD write_size= (DWORD)*size;
+
+ if (tp->hid_buffer != NULL) {
+ usbi_dbg("program assertion failed: hid_buffer is not NULL");
+ }
+
+ if ((*size == 0) || (*size > MAX_HID_REPORT_SIZE)) {
+ usbi_dbg("invalid size (%d)", *size);
+ return LIBUSB_ERROR_INVALID_PARAM;
+ }
+
+ usbi_dbg("report ID: 0x%02X", id);
+ // When report IDs are not used (i.e. when id == 0), we must add
+ // a null report ID. Otherwise, we just use original data buffer
+ if (id == 0) {
+ write_size++;
+ }
+ buf = malloc(write_size);
+ if (buf == NULL) {
+ return LIBUSB_ERROR_NO_MEM;
+ }
+ if (id == 0) {
+ buf[0] = 0;
+ memcpy(buf + 1, data, *size);
+ } else {
+ // This seems like a waste, but if we don't duplicate the
+ // data, we'll get issues when freeing hid_buffer
+ memcpy(buf, data, *size);
+ if (buf[0] != id) {
+ usbi_warn(NULL, "mismatched report ID (data is %02X, parameter is %02X)", buf[0], id);
+ }
+ }
+
+#if !defined(USE_HIDD_FOR_REPORTS)
+ // Une WriteFile instead of HidD_SetOutputReport for async I/O
+ if (!WriteFile(hid_handle, buf, write_size, &write_size, overlapped)) {
+ if (GetLastError() != ERROR_IO_PENDING) {
+ usbi_dbg("Failed to Write HID Output Report: %s", windows_error_str(0));
+ safe_free(buf);
+ return LIBUSB_ERROR_IO;
+ }
+ tp->hid_buffer = buf;
+ tp->hid_dest = NULL;
+ return LIBUSB_SUCCESS;
+ }
+#else
+ if (!HidD_SetOutputReport(hid_handle, buf, write_size)) {
+ usbi_dbg("Failed to Write HID Output Report: %s", windows_error_str(0));
+ if (id == 0) {
+ safe_free(buf);
+ }
+ return LIBUSB_ERROR_IO;
+ }
+#endif
+ // Transfer completed synchronously
+ if (write_size == 0) {
+ usbi_dbg("program assertion failed - write completed synchronously, but no data was written");
+ *size = 0;
+ } else {
+ *size = write_size - ((id == 0)?1:0);
+ }
+ safe_free(buf);
+ return LIBUSB_COMPLETED;
+}
+
+static int _hid_get_feature(struct hid_device_priv* dev, HANDLE hid_handle, int id, void *data, size_t *size)
+{
+ uint8_t *buf = (uint8_t*)data; // default with report ID is to use data
+ ULONG read_size = (ULONG)*size;
+ int r = LIBUSB_ERROR_OTHER;
+ uint32_t err;
+
+ if ((*size == 0) || (*size > MAX_HID_REPORT_SIZE)) {
+ usbi_dbg("invalid size (%d)", *size);
+ return LIBUSB_ERROR_INVALID_PARAM;
+ }
+
+ // When report IDs are not in use, we must prefix an extra zero ID
+ if (id == 0) {
+ read_size++;
+ buf = (uint8_t*)calloc(1, read_size);
+ if (buf == NULL) {
+ return LIBUSB_ERROR_NO_MEM;
+ }
+ }
+ buf[0] = (uint8_t)id;
+ usbi_dbg("report ID: 0x%02X", buf[0]);
+
+ if (HidD_GetFeature(hid_handle, buf, read_size)) {
+ if (buf[0] != id) {
+ usbi_warn(NULL, "mismatched report ID (data is %02X, parameter is %02X)", buf[0], id);
+ }
+ if (id == 0) {
+ memcpy(data, buf+1, *size);
+ }
+ r = LIBUSB_COMPLETED;
+ } else {
+ err = GetLastError();
+ switch (err) {
+ case ERROR_INVALID_FUNCTION:
+ r = LIBUSB_ERROR_NOT_FOUND;
+ break;
+ default:
+ usbi_dbg("error %s", windows_error_str(err));
+ r = LIBUSB_ERROR_OTHER;
+ break;
+ }
+ }
+ if (id == 0) {
+ safe_free(buf);
+ }
+ return r;
+}
+
+static int _hid_set_feature(struct hid_device_priv* dev, HANDLE hid_handle, int id, void *data, size_t *size)
+{
+ uint8_t *buf = (uint8_t*)data;
+ uint32_t err;
+ int r = LIBUSB_ERROR_OTHER;
+ ULONG write_size = (ULONG)*size;
+
+ if ((*size == 0) || (*size > MAX_HID_REPORT_SIZE)) {
+ usbi_dbg("invalid size (%d)", *size);
+ return LIBUSB_ERROR_INVALID_PARAM;
+ }
+
+ if (id == 0) {
+ write_size++;
+ buf = (uint8_t*)calloc(write_size, 1);
+ if (buf == NULL) {
+ return LIBUSB_ERROR_NO_MEM;
+ }
+ memcpy(buf+1, data, *size);
+ buf[0] = (uint8_t)id;
+ } else if (buf[0] != id) {
+ usbi_warn(NULL, "mismatched report ID (data is %02X, parameter is %02X)", buf[0], id);
+ return LIBUSB_ERROR_INVALID_PARAM;
+ }
+
+ usbi_dbg("report ID: 0x%02X", buf[0]);
+
+ if (HidD_SetFeature(hid_handle, buf, write_size)) {
+ r = LIBUSB_COMPLETED;
+ } else {
+ err = GetLastError();
+ switch (err) {
+ case ERROR_INVALID_FUNCTION:
+ r = LIBUSB_ERROR_NOT_FOUND;
+ default:
+ usbi_dbg("error %s", windows_error_str(err));
+ r = LIBUSB_ERROR_OTHER;
+ }
+ }
+ if (id == 0) {
+ safe_free(buf);
+ }
+ return r;
+}
+
+static int _hid_class_request(struct hid_device_priv* dev, HANDLE hid_handle, int request_type,
+ int request, int value, int index, void *data, struct windows_transfer_priv *tp,
+ size_t *size, OVERLAPPED* overlapped)
+{
+ int report_type = (value >> 8) & 0xFF;
+ int report_id = value & 0xFF;
+
+ if ( (LIBUSB_REQ_RECIPIENT(request_type) != LIBUSB_RECIPIENT_INTERFACE)
+ && (LIBUSB_REQ_RECIPIENT(request_type) != LIBUSB_RECIPIENT_DEVICE) )
+ return LIBUSB_ERROR_INVALID_PARAM;
+
+ if (LIBUSB_REQ_OUT(request_type)
+ && request == HID_REQ_SET_REPORT
+ && report_type == HID_REPORT_TYPE_OUTPUT)
+ return _hid_set_report(dev, hid_handle, report_id, data, tp, size, overlapped);
+
+ if (LIBUSB_REQ_IN(request_type)
+ && request == HID_REQ_GET_REPORT
+ && report_type == HID_REPORT_TYPE_INPUT)
+ return _hid_get_report(dev, hid_handle, report_id, data, tp, size, overlapped);
+
+ if (LIBUSB_REQ_OUT(request_type)
+ && request == HID_REQ_SET_REPORT
+ && report_type == HID_REPORT_TYPE_FEATURE)
+ return _hid_set_feature(dev, hid_handle, report_id, data, size);
+
+ if (LIBUSB_REQ_IN(request_type)
+ && request == HID_REQ_GET_REPORT
+ && report_type == HID_REPORT_TYPE_FEATURE)
+ return _hid_get_feature(dev, hid_handle, report_id, data, size);
+
+ return LIBUSB_ERROR_INVALID_PARAM;
+}
+
+
+/*
+ * HID API functions
+ */
+static int hid_init(struct libusb_context *ctx)
+{
+ DLL_LOAD(hid.dll, HidD_GetAttributes, TRUE);
+ DLL_LOAD(hid.dll, HidD_GetHidGuid, TRUE);
+ DLL_LOAD(hid.dll, HidD_GetPreparsedData, TRUE);
+ DLL_LOAD(hid.dll, HidD_FreePreparsedData, TRUE);
+ DLL_LOAD(hid.dll, HidD_GetManufacturerString, TRUE);
+ DLL_LOAD(hid.dll, HidD_GetProductString, TRUE);
+ DLL_LOAD(hid.dll, HidD_GetSerialNumberString, TRUE);
+ DLL_LOAD(hid.dll, HidP_GetCaps, TRUE);
+ DLL_LOAD(hid.dll, HidD_SetNumInputBuffers, TRUE);
+ DLL_LOAD(hid.dll, HidD_SetFeature, TRUE);
+ DLL_LOAD(hid.dll, HidD_GetFeature, TRUE);
+ DLL_LOAD(hid.dll, HidD_GetPhysicalDescriptor, TRUE);
+ DLL_LOAD(hid.dll, HidD_GetInputReport, FALSE);
+ DLL_LOAD(hid.dll, HidD_SetOutputReport, FALSE);
+ DLL_LOAD(hid.dll, HidD_FlushQueue, TRUE);
+ DLL_LOAD(hid.dll, HidP_GetValueCaps, TRUE);
+
+ api_hid_available = true;
+ return LIBUSB_SUCCESS;
+}
+
+static int hid_exit(void)
+{
+ return LIBUSB_SUCCESS;
+}
+
+// NB: open and close must ensure that they only handle interface of
+// the right API type, as these functions can be called wholesale from
+// composite_open(), with interfaces belonging to different APIs
+static int hid_open(struct libusb_device_handle *dev_handle)
+{
+ struct libusb_context *ctx = DEVICE_CTX(dev_handle->dev);
+ struct windows_device_priv *priv = __device_priv(dev_handle->dev);
+ struct windows_device_handle_priv *handle_priv = __device_handle_priv(dev_handle);
+
+ HIDD_ATTRIBUTES hid_attributes;
+ PHIDP_PREPARSED_DATA preparsed_data = NULL;
+ HIDP_CAPS capabilities;
+ HIDP_VALUE_CAPS *value_caps;
+
+ HANDLE hid_handle = INVALID_HANDLE_VALUE;
+ int i, j;
+ // report IDs handling
+ ULONG size[3];
+ char* type[3] = {"input", "output", "feature"};
+ int nb_ids[2]; // zero and nonzero report IDs
+
+ CHECK_HID_AVAILABLE;
+ if (priv->hid == NULL) {
+ usbi_err(ctx, "program assertion failed - private HID structure is unitialized");
+ return LIBUSB_ERROR_NOT_FOUND;
+ }
+
+ for (i = 0; i < USB_MAXINTERFACES; i++) {
+ if ( (priv->usb_interface[i].path != NULL)
+ && (priv->usb_interface[i].apib->id == USB_API_HID) ) {
+ hid_handle = CreateFileA(priv->usb_interface[i].path, GENERIC_WRITE | GENERIC_READ, FILE_SHARE_WRITE | FILE_SHARE_READ,
+ NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL | FILE_FLAG_OVERLAPPED, NULL);
+ /*
+ * http://www.lvr.com/hidfaq.htm: Why do I receive "Access denied" when attempting to access my HID?
+ * "Windows 2000 and later have exclusive read/write access to HIDs that are configured as a system
+ * keyboards or mice. An application can obtain a handle to a system keyboard or mouse by not
+ * requesting READ or WRITE access with CreateFile. Applications can then use HidD_SetFeature and
+ * HidD_GetFeature (if the device supports Feature reports)."
+ */
+ if (hid_handle == INVALID_HANDLE_VALUE) {
+ usbi_warn(ctx, "could not open HID device in R/W mode (keyboard or mouse?) - trying without");
+ hid_handle = CreateFileA(priv->usb_interface[i].path, 0, FILE_SHARE_WRITE | FILE_SHARE_READ,
+ NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL | FILE_FLAG_OVERLAPPED, NULL);
+ if (hid_handle == INVALID_HANDLE_VALUE) {
+ usbi_err(ctx, "could not open device %s (interface %d): %s", priv->path, i, windows_error_str(0));
+ switch(GetLastError()) {
+ case ERROR_FILE_NOT_FOUND: // The device was disconnected
+ return LIBUSB_ERROR_NO_DEVICE;
+ case ERROR_ACCESS_DENIED:
+ return LIBUSB_ERROR_ACCESS;
+ default:
+ return LIBUSB_ERROR_IO;
+ }
+ }
+ priv->usb_interface[i].restricted_functionality = true;
+ }
+ handle_priv->interface_handle[i].api_handle = hid_handle;
+ }
+ }
+
+ hid_attributes.Size = sizeof(hid_attributes);
+ do {
+ if (!HidD_GetAttributes(hid_handle, &hid_attributes)) {
+ usbi_err(ctx, "could not gain access to HID top collection (HidD_GetAttributes)");
+ break;
+ }
+
+ priv->hid->vid = hid_attributes.VendorID;
+ priv->hid->pid = hid_attributes.ProductID;
+
+ // Set the maximum available input buffer size
+ for (i=32; HidD_SetNumInputBuffers(hid_handle, i); i*=2);
+ usbi_dbg("set maximum input buffer size to %d", i/2);
+
+ // Get the maximum input and output report size
+ if (!HidD_GetPreparsedData(hid_handle, &preparsed_data) || !preparsed_data) {
+ usbi_err(ctx, "could not read HID preparsed data (HidD_GetPreparsedData)");
+ break;
+ }
+ if (HidP_GetCaps(preparsed_data, &capabilities) != HIDP_STATUS_SUCCESS) {
+ usbi_err(ctx, "could not parse HID capabilities (HidP_GetCaps)");
+ break;
+ }
+
+ // Find out if interrupt will need report IDs
+ size[0] = capabilities.NumberInputValueCaps;
+ size[1] = capabilities.NumberOutputValueCaps;
+ size[2] = capabilities.NumberFeatureValueCaps;
+ for (j=0; j<3; j++) {
+ usbi_dbg("%d HID %s report value(s) found", size[j], type[j]);
+ priv->hid->uses_report_ids[j] = false;
+ if (size[j] > 0) {
+ value_caps = malloc(size[j] * sizeof(HIDP_VALUE_CAPS));
+ if ( (value_caps != NULL)
+ && (HidP_GetValueCaps(j, value_caps, &size[j], preparsed_data) == HIDP_STATUS_SUCCESS)
+ && (size[j] >= 1) ) {
+ nb_ids[0] = 0;
+ nb_ids[1] = 0;
+ for (i=0; i<(int)size[j]; i++) {
+ usbi_dbg(" Report ID: 0x%02X", value_caps[i].ReportID);
+ if (value_caps[i].ReportID != 0) {
+ nb_ids[1]++;
+ } else {
+ nb_ids[0]++;
+ }
+ }
+ if (nb_ids[1] != 0) {
+ if (nb_ids[0] != 0) {
+ usbi_warn(ctx, "program assertion failed: zero and nonzero report IDs used for %s",
+ type[j]);
+ }
+ priv->hid->uses_report_ids[j] = true;
+ }
+ } else {
+ usbi_warn(ctx, " could not process %s report IDs", type[j]);
+ }
+ safe_free(value_caps);
+ }
+ }
+
+ // Set the report sizes
+ priv->hid->input_report_size = capabilities.InputReportByteLength;
+ priv->hid->output_report_size = capabilities.OutputReportByteLength;
+ priv->hid->feature_report_size = capabilities.FeatureReportByteLength;
+
+ // Fetch string descriptors
+ priv->hid->string_index[0] = priv->dev_descriptor.iManufacturer;
+ if (priv->hid->string_index[0] != 0) {
+ HidD_GetManufacturerString(hid_handle, priv->hid->string[0],
+ sizeof(priv->hid->string[0]));
+ } else {
+ priv->hid->string[0][0] = 0;
+ }
+ priv->hid->string_index[1] = priv->dev_descriptor.iProduct;
+ if (priv->hid->string_index[1] != 0) {
+ HidD_GetProductString(hid_handle, priv->hid->string[1],
+ sizeof(priv->hid->string[1]));
+ } else {
+ priv->hid->string[1][0] = 0;
+ }
+ priv->hid->string_index[2] = priv->dev_descriptor.iSerialNumber;
+ if (priv->hid->string_index[2] != 0) {
+ HidD_GetSerialNumberString(hid_handle, priv->hid->string[2],
+ sizeof(priv->hid->string[2]));
+ } else {
+ priv->hid->string[2][0] = 0;
+ }
+ } while(0);
+
+ if (preparsed_data) {
+ HidD_FreePreparsedData(preparsed_data);
+ }
+
+ return LIBUSB_SUCCESS;
+}
+
+static void hid_close(struct libusb_device_handle *dev_handle)
+{
+ struct windows_device_priv *priv = __device_priv(dev_handle->dev);
+ struct windows_device_handle_priv *handle_priv = __device_handle_priv(dev_handle);
+ HANDLE file_handle;
+ int i;
+
+ if (!api_hid_available)
+ return;
+
+ for (i = 0; i < USB_MAXINTERFACES; i++) {
+ if (priv->usb_interface[i].apib->id == USB_API_HID) {
+ file_handle = handle_priv->interface_handle[i].api_handle;
+ if ( (file_handle != 0) && (file_handle != INVALID_HANDLE_VALUE)) {
+ CloseHandle(file_handle);
+ }
+ }
+ }
+}
+
+static int hid_claim_interface(struct libusb_device_handle *dev_handle, int iface)
+{
+ struct windows_device_handle_priv *handle_priv = __device_handle_priv(dev_handle);
+ struct windows_device_priv *priv = __device_priv(dev_handle->dev);
+
+ CHECK_HID_AVAILABLE;
+
+ // NB: Disconnection detection is not possible in this function
+ if (priv->usb_interface[iface].path == NULL) {
+ return LIBUSB_ERROR_NOT_FOUND; // invalid iface
+ }
+
+ // We use dev_handle as a flag for interface claimed
+ if (handle_priv->interface_handle[iface].dev_handle == INTERFACE_CLAIMED) {
+ return LIBUSB_ERROR_BUSY; // already claimed
+ }
+
+ handle_priv->interface_handle[iface].dev_handle = INTERFACE_CLAIMED;
+
+ usbi_dbg("claimed interface %d", iface);
+ handle_priv->active_interface = iface;
+
+ return LIBUSB_SUCCESS;
+}
+
+static int hid_release_interface(struct libusb_device_handle *dev_handle, int iface)
+{
+ struct windows_device_handle_priv *handle_priv = __device_handle_priv(dev_handle);
+ struct windows_device_priv *priv = __device_priv(dev_handle->dev);
+
+ CHECK_HID_AVAILABLE;
+
+ if (priv->usb_interface[iface].path == NULL) {
+ return LIBUSB_ERROR_NOT_FOUND; // invalid iface
+ }
+
+ if (handle_priv->interface_handle[iface].dev_handle != INTERFACE_CLAIMED) {
+ return LIBUSB_ERROR_NOT_FOUND; // invalid iface
+ }
+
+ handle_priv->interface_handle[iface].dev_handle = INVALID_HANDLE_VALUE;
+
+ return LIBUSB_SUCCESS;
+}
+
+static int hid_set_interface_altsetting(struct libusb_device_handle *dev_handle, int iface, int altsetting)
+{
+ struct libusb_context *ctx = DEVICE_CTX(dev_handle->dev);
+
+ CHECK_HID_AVAILABLE;
+
+ if (altsetting > 255) {
+ return LIBUSB_ERROR_INVALID_PARAM;
+ }
+
+ if (altsetting != 0) {
+ usbi_err(ctx, "set interface altsetting not supported for altsetting >0");
+ return LIBUSB_ERROR_NOT_SUPPORTED;
+ }
+
+ return LIBUSB_SUCCESS;
+}
+
+static int hid_submit_control_transfer(struct usbi_transfer *itransfer)
+{
+ struct libusb_transfer *transfer = __USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer);
+ struct windows_transfer_priv *transfer_priv = usbi_transfer_get_os_priv(itransfer);
+ struct windows_device_handle_priv *handle_priv = __device_handle_priv(transfer->dev_handle);
+ struct windows_device_priv *priv = __device_priv(transfer->dev_handle->dev);
+ struct libusb_context *ctx = DEVICE_CTX(transfer->dev_handle->dev);
+ WINUSB_SETUP_PACKET *setup = (WINUSB_SETUP_PACKET *) transfer->buffer;
+ HANDLE hid_handle;
+ struct winfd wfd;
+ int current_interface, config;
+ size_t size;
+ int r = LIBUSB_ERROR_INVALID_PARAM;
+
+ CHECK_HID_AVAILABLE;
+
+ transfer_priv->pollable_fd = INVALID_WINFD;
+ safe_free(transfer_priv->hid_buffer);
+ transfer_priv->hid_dest = NULL;
+ size = transfer->length - LIBUSB_CONTROL_SETUP_SIZE;
+
+ if (size > MAX_CTRL_BUFFER_LENGTH) {
+ return LIBUSB_ERROR_INVALID_PARAM;
+ }
+
+ current_interface = get_valid_interface(transfer->dev_handle, USB_API_HID);
+ if (current_interface < 0) {
+#if defined(AUTO_CLAIM)
+ if (auto_claim(transfer, ¤t_interface, USB_API_HID) != LIBUSB_SUCCESS) {
+ return LIBUSB_ERROR_NOT_FOUND;
+ }
+#else
+ usbi_warn(ctx, "no interface available for control transfer");
+ return LIBUSB_ERROR_NOT_FOUND;
+#endif
+ }
+
+ usbi_dbg("will use interface %d", current_interface);
+ hid_handle = handle_priv->interface_handle[current_interface].api_handle;
+ // Always use the handle returned from usbi_create_fd (wfd.handle)
+ wfd = usbi_create_fd(hid_handle, _O_RDONLY);
+ if (wfd.fd < 0) {
+ return LIBUSB_ERROR_NO_MEM;
+ }
+
+ switch(LIBUSB_REQ_TYPE(setup->request_type)) {
+ case LIBUSB_REQUEST_TYPE_STANDARD:
+ switch(setup->request) {
+ case LIBUSB_REQUEST_GET_DESCRIPTOR:
+ r = _hid_get_descriptor(priv->hid, wfd.handle, LIBUSB_REQ_RECIPIENT(setup->request_type),
+ (setup->value >> 8) & 0xFF, setup->value & 0xFF, transfer->buffer + LIBUSB_CONTROL_SETUP_SIZE, &size);
+ break;
+ case LIBUSB_REQUEST_GET_CONFIGURATION:
+ r = windows_get_configuration(transfer->dev_handle, &config);
+ if (r == LIBUSB_SUCCESS) {
+ size = 1;
+ ((uint8_t*)transfer->buffer)[LIBUSB_CONTROL_SETUP_SIZE] = (uint8_t)config;
+ r = LIBUSB_COMPLETED;
+ }
+ break;
+ case LIBUSB_REQUEST_SET_CONFIGURATION:
+ if (setup->value == priv->active_config) {
+ r = LIBUSB_COMPLETED;
+ } else {
+ usbi_warn(ctx, "cannot set configuration other than the default one");
+ r = LIBUSB_ERROR_INVALID_PARAM;
+ }
+ break;
+ case LIBUSB_REQUEST_GET_INTERFACE:
+ size = 1;
+ ((uint8_t*)transfer->buffer)[LIBUSB_CONTROL_SETUP_SIZE] = 0;
+ r = LIBUSB_COMPLETED;
+ break;
+ case LIBUSB_REQUEST_SET_INTERFACE:
+ r = hid_set_interface_altsetting(transfer->dev_handle, setup->index, setup->value);
+ if (r == LIBUSB_SUCCESS) {
+ r = LIBUSB_COMPLETED;
+ }
+ break;
+ default:
+ usbi_warn(ctx, "unsupported HID control request");
+ r = LIBUSB_ERROR_INVALID_PARAM;
+ break;
+ }
+ break;
+ case LIBUSB_REQUEST_TYPE_CLASS:
+ r =_hid_class_request(priv->hid, wfd.handle, setup->request_type, setup->request, setup->value,
+ setup->index, transfer->buffer + LIBUSB_CONTROL_SETUP_SIZE, transfer_priv,
+ &size, wfd.overlapped);
+ break;
+ default:
+ usbi_warn(ctx, "unsupported HID control request");
+ r = LIBUSB_ERROR_INVALID_PARAM;
+ break;
+ }
+
+ if (r == LIBUSB_COMPLETED) {
+ // Force request to be completed synchronously. Transferred size has been set by previous call
+ wfd.overlapped->Internal = STATUS_COMPLETED_SYNCHRONOUSLY;
+ // http://msdn.microsoft.com/en-us/library/ms684342%28VS.85%29.aspx
+ // set InternalHigh to the number of bytes transferred
+ wfd.overlapped->InternalHigh = (DWORD)size;
+ r = LIBUSB_SUCCESS;
+ }
+
+ if (r == LIBUSB_SUCCESS) {
+ // Use priv_transfer to store data needed for async polling
+ transfer_priv->pollable_fd = wfd;
+ transfer_priv->interface_number = (uint8_t)current_interface;
+ } else {
+ usbi_free_fd(wfd.fd);
+ }
+
+ return r;
+}
+
+static int hid_submit_bulk_transfer(struct usbi_transfer *itransfer) {
+ struct libusb_transfer *transfer = __USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer);
+ struct windows_transfer_priv *transfer_priv = usbi_transfer_get_os_priv(itransfer);
+ struct libusb_context *ctx = DEVICE_CTX(transfer->dev_handle->dev);
+ struct windows_device_handle_priv *handle_priv = __device_handle_priv(transfer->dev_handle);
+ struct windows_device_priv *priv = __device_priv(transfer->dev_handle->dev);
+ struct winfd wfd;
+ HANDLE hid_handle;
+ bool direction_in, ret;
+ int current_interface, length;
+ DWORD size;
+ int r = LIBUSB_SUCCESS;
+
+ CHECK_HID_AVAILABLE;
+
+ transfer_priv->pollable_fd = INVALID_WINFD;
+ transfer_priv->hid_dest = NULL;
+ safe_free(transfer_priv->hid_buffer);
+
+ current_interface = interface_by_endpoint(priv, handle_priv, transfer->endpoint);
+ if (current_interface < 0) {
+ usbi_err(ctx, "unable to match endpoint to an open interface - cancelling transfer");
+ return LIBUSB_ERROR_NOT_FOUND;
+ }
+
+ usbi_dbg("matched endpoint %02X with interface %d", transfer->endpoint, current_interface);
+
+ hid_handle = handle_priv->interface_handle[current_interface].api_handle;
+ direction_in = transfer->endpoint & LIBUSB_ENDPOINT_IN;
+
+ wfd = usbi_create_fd(hid_handle, direction_in?_O_RDONLY:_O_WRONLY);
+ // Always use the handle returned from usbi_create_fd (wfd.handle)
+ if (wfd.fd < 0) {
+ return LIBUSB_ERROR_NO_MEM;
+ }
+
+ // If report IDs are not in use, an extra prefix byte must be added
+ if ( ((direction_in) && (!priv->hid->uses_report_ids[0]))
+ || ((!direction_in) && (!priv->hid->uses_report_ids[1])) ) {
+ length = transfer->length+1;
+ } else {
+ length = transfer->length;
+ }
+ // Add a trailing byte to detect overflows on input
+ transfer_priv->hid_buffer = (uint8_t*)calloc(length+1, 1);
+ if (transfer_priv->hid_buffer == NULL) {
+ return LIBUSB_ERROR_NO_MEM;
+ }
+ transfer_priv->hid_expected_size = length;
+
+ if (direction_in) {
+ transfer_priv->hid_dest = transfer->buffer;
+ usbi_dbg("reading %d bytes (report ID: 0x%02X)", length, transfer_priv->hid_buffer[0]);
+ ret = ReadFile(wfd.handle, transfer_priv->hid_buffer, length+1, &size, wfd.overlapped);
+ } else {
+ if (!priv->hid->uses_report_ids[1]) {
+ memcpy(transfer_priv->hid_buffer+1, transfer->buffer, transfer->length);
+ } else {
+ // We could actually do without the calloc and memcpy in this case
+ memcpy(transfer_priv->hid_buffer, transfer->buffer, transfer->length);
+ }
+ usbi_dbg("writing %d bytes (report ID: 0x%02X)", length, transfer_priv->hid_buffer[0]);
+ ret = WriteFile(wfd.handle, transfer_priv->hid_buffer, length, &size, wfd.overlapped);
+ }
+ if (!ret) {
+ if (GetLastError() != ERROR_IO_PENDING) {
+ usbi_err(ctx, "HID transfer failed: %s", windows_error_str(0));
+ usbi_free_fd(wfd.fd);
+ safe_free(transfer_priv->hid_buffer);
+ return LIBUSB_ERROR_IO;
+ }
+ } else {
+ // Only write operations that completed synchronously need to free up
+ // hid_buffer. For reads, copy_transfer_data() handles that process.
+ if (!direction_in) {
+ safe_free(transfer_priv->hid_buffer);
+ }
+ if (size == 0) {
+ usbi_err(ctx, "program assertion failed - no data was transferred");
+ size = 1;
+ }
+ if (size > (size_t)length) {
+ usbi_err(ctx, "OVERFLOW!");
+ r = LIBUSB_ERROR_OVERFLOW;
+ }
+ wfd.overlapped->Internal = STATUS_COMPLETED_SYNCHRONOUSLY;
+ wfd.overlapped->InternalHigh = size;
+ }
+
+ transfer_priv->pollable_fd = wfd;
+ transfer_priv->interface_number = (uint8_t)current_interface;
+
+ return r;
+}
+
+static int hid_abort_transfers(struct usbi_transfer *itransfer)
+{
+ struct libusb_transfer *transfer = __USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer);
+ struct windows_transfer_priv *transfer_priv = usbi_transfer_get_os_priv(itransfer);
+ struct windows_device_handle_priv *handle_priv = __device_handle_priv(transfer->dev_handle);
+ HANDLE hid_handle;
+ int current_interface;
+
+ CHECK_HID_AVAILABLE;
+
+ current_interface = transfer_priv->interface_number;
+ hid_handle = handle_priv->interface_handle[current_interface].api_handle;
+ CancelIo(hid_handle);
+
+ return LIBUSB_SUCCESS;
+}
+
+static int hid_reset_device(struct libusb_device_handle *dev_handle)
+{
+ struct windows_device_handle_priv *handle_priv = __device_handle_priv(dev_handle);
+ HANDLE hid_handle;
+ int current_interface;
+
+ CHECK_HID_AVAILABLE;
+
+ // Flushing the queues on all interfaces is the best we can achieve
+ for (current_interface = 0; current_interface < USB_MAXINTERFACES; current_interface++) {
+ hid_handle = handle_priv->interface_handle[current_interface].api_handle;
+ if ((hid_handle != 0) && (hid_handle != INVALID_HANDLE_VALUE)) {
+ HidD_FlushQueue(hid_handle);
+ }
+ }
+ return LIBUSB_SUCCESS;
+}
+
+static int hid_clear_halt(struct libusb_device_handle *dev_handle, unsigned char endpoint)
+{
+ struct libusb_context *ctx = DEVICE_CTX(dev_handle->dev);
+ struct windows_device_handle_priv *handle_priv = __device_handle_priv(dev_handle);
+ struct windows_device_priv *priv = __device_priv(dev_handle->dev);
+ HANDLE hid_handle;
+ int current_interface;
+
+ CHECK_HID_AVAILABLE;
+
+ current_interface = interface_by_endpoint(priv, handle_priv, endpoint);
+ if (current_interface < 0) {
+ usbi_err(ctx, "unable to match endpoint to an open interface - cannot clear");
+ return LIBUSB_ERROR_NOT_FOUND;
+ }
+
+ usbi_dbg("matched endpoint %02X with interface %d", endpoint, current_interface);
+ hid_handle = handle_priv->interface_handle[current_interface].api_handle;
+
+ // No endpoint selection with Microsoft's implementation, so we try to flush the
+ // whole interface. Should be OK for most case scenarios
+ if (!HidD_FlushQueue(hid_handle)) {
+ usbi_err(ctx, "Flushing of HID queue failed: %s", windows_error_str(0));
+ // Device was probably disconnected
+ return LIBUSB_ERROR_NO_DEVICE;
+ }
+
+ return LIBUSB_SUCCESS;
+}
+
+// This extra function is only needed for HID
+static int hid_copy_transfer_data(struct usbi_transfer *itransfer, uint32_t io_size) {
+ struct libusb_transfer *transfer = __USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer);
+ struct libusb_context *ctx = DEVICE_CTX(transfer->dev_handle->dev);
+ struct windows_transfer_priv *transfer_priv = usbi_transfer_get_os_priv(itransfer);
+ int r = LIBUSB_TRANSFER_COMPLETED;
+ uint32_t corrected_size = io_size;
+
+ if (transfer_priv->hid_buffer != NULL) {
+ // If we have a valid hid_buffer, it means the transfer was async
+ if (transfer_priv->hid_dest != NULL) { // Data readout
+ // First, check for overflow
+ if (corrected_size > transfer_priv->hid_expected_size) {
+ usbi_err(ctx, "OVERFLOW!");
+ corrected_size = (uint32_t)transfer_priv->hid_expected_size;
+ r = LIBUSB_TRANSFER_OVERFLOW;
+ }
+
+ if (transfer_priv->hid_buffer[0] == 0) {
+ // Discard the 1 byte report ID prefix
+ corrected_size--;
+ memcpy(transfer_priv->hid_dest, transfer_priv->hid_buffer+1, corrected_size);
+ } else {
+ memcpy(transfer_priv->hid_dest, transfer_priv->hid_buffer, corrected_size);
+ }
+ transfer_priv->hid_dest = NULL;
+ }
+ // For write, we just need to free the hid buffer
+ safe_free(transfer_priv->hid_buffer);
+ }
+ itransfer->transferred += corrected_size;
+ return r;
+}
+
+
+/*
+ * Composite API functions
+ */
+static int composite_init(struct libusb_context *ctx)
+{
+ return LIBUSB_SUCCESS;
+}
+
+static int composite_exit(void)
+{
+ return LIBUSB_SUCCESS;
+}
+
+static int composite_open(struct libusb_device_handle *dev_handle)
+{
+ struct windows_device_priv *priv = __device_priv(dev_handle->dev);
+ unsigned api;
+ int r;
+ uint8_t flag = 1<<USB_API_WINUSB;
+
+ for (api=USB_API_WINUSB; api<USB_API_MAX; api++) {
+ if (priv->composite_api_flags & flag) {
+ r = usb_api_backend[api].open(dev_handle);
+ if (r != LIBUSB_SUCCESS) {
+ return r;
+ }
+ }
+ flag <<= 1;
+ }
+ return LIBUSB_SUCCESS;
+}
+
+static void composite_close(struct libusb_device_handle *dev_handle)
+{
+ struct windows_device_priv *priv = __device_priv(dev_handle->dev);
+ unsigned api;
+ uint8_t flag = 1<<USB_API_WINUSB;
+
+ for (api=USB_API_WINUSB; api<USB_API_MAX; api++) {
+ if (priv->composite_api_flags & flag) {
+ usb_api_backend[api].close(dev_handle);
+ }
+ flag <<= 1;
+ }
+}
+
+static int composite_claim_interface(struct libusb_device_handle *dev_handle, int iface)
+{
+ struct windows_device_priv *priv = __device_priv(dev_handle->dev);
+ return priv->usb_interface[iface].apib->claim_interface(dev_handle, iface);
+}
+
+static int composite_set_interface_altsetting(struct libusb_device_handle *dev_handle, int iface, int altsetting)
+{
+ struct windows_device_priv *priv = __device_priv(dev_handle->dev);
+ return priv->usb_interface[iface].apib->set_interface_altsetting(dev_handle, iface, altsetting);
+}
+
+static int composite_release_interface(struct libusb_device_handle *dev_handle, int iface)
+{
+ struct windows_device_priv *priv = __device_priv(dev_handle->dev);
+ return priv->usb_interface[iface].apib->release_interface(dev_handle, iface);
+}
+
+static int composite_submit_control_transfer(struct usbi_transfer *itransfer)
+{
+ struct libusb_transfer *transfer = __USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer);
+ struct libusb_context *ctx = DEVICE_CTX(transfer->dev_handle->dev);
+ struct windows_device_priv *priv = __device_priv(transfer->dev_handle->dev);
+ int i, pass;
+
+ // Interface shouldn't matter for control, but it does in practice, with Windows'
+ // restrictions with regards to accessing HID keyboards and mice. Try a 2 pass approach
+ for (pass = 0; pass < 2; pass++) {
+ for (i=0; i<USB_MAXINTERFACES; i++) {
+ if (priv->usb_interface[i].path != NULL) {
+ if ((pass == 0) && (priv->usb_interface[i].restricted_functionality)) {
+ usbi_dbg("trying to skip restricted interface #%d (HID keyboard or mouse?)", i);
+ continue;
+ }
+ usbi_dbg("using interface %d", i);
+ return priv->usb_interface[i].apib->submit_control_transfer(itransfer);
+ }
+ }
+ }
+
+ usbi_err(ctx, "no libusb supported interfaces to complete request");
+ return LIBUSB_ERROR_NOT_FOUND;
+}
+
+static int composite_submit_bulk_transfer(struct usbi_transfer *itransfer) {
+ struct libusb_transfer *transfer = __USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer);
+ struct libusb_context *ctx = DEVICE_CTX(transfer->dev_handle->dev);
+ struct windows_device_handle_priv *handle_priv = __device_handle_priv(transfer->dev_handle);
+ struct windows_device_priv *priv = __device_priv(transfer->dev_handle->dev);
+ int current_interface;
+
+ current_interface = interface_by_endpoint(priv, handle_priv, transfer->endpoint);
+ if (current_interface < 0) {
+ usbi_err(ctx, "unable to match endpoint to an open interface - cancelling transfer");
+ return LIBUSB_ERROR_NOT_FOUND;
+ }
+
+ return priv->usb_interface[current_interface].apib->submit_bulk_transfer(itransfer);
+}
+
+static int composite_submit_iso_transfer(struct usbi_transfer *itransfer) {
+ struct libusb_transfer *transfer = __USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer);
+ struct libusb_context *ctx = DEVICE_CTX(transfer->dev_handle->dev);
+ struct windows_device_handle_priv *handle_priv = __device_handle_priv(transfer->dev_handle);
+ struct windows_device_priv *priv = __device_priv(transfer->dev_handle->dev);
+ int current_interface;
+
+ current_interface = interface_by_endpoint(priv, handle_priv, transfer->endpoint);
+ if (current_interface < 0) {
+ usbi_err(ctx, "unable to match endpoint to an open interface - cancelling transfer");
+ return LIBUSB_ERROR_NOT_FOUND;
+ }
+
+ return priv->usb_interface[current_interface].apib->submit_iso_transfer(itransfer);
+}
+
+static int composite_clear_halt(struct libusb_device_handle *dev_handle, unsigned char endpoint)
+{
+ struct libusb_context *ctx = DEVICE_CTX(dev_handle->dev);
+ struct windows_device_handle_priv *handle_priv = __device_handle_priv(dev_handle);
+ struct windows_device_priv *priv = __device_priv(dev_handle->dev);
+ int current_interface;
+
+ current_interface = interface_by_endpoint(priv, handle_priv, endpoint);
+ if (current_interface < 0) {
+ usbi_err(ctx, "unable to match endpoint to an open interface - cannot clear");
+ return LIBUSB_ERROR_NOT_FOUND;
+ }
+
+ return priv->usb_interface[current_interface].apib->clear_halt(dev_handle, endpoint);
+}
+
+static int composite_abort_control(struct usbi_transfer *itransfer)
+{
+ struct libusb_transfer *transfer = __USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer);
+ struct windows_transfer_priv *transfer_priv = usbi_transfer_get_os_priv(itransfer);
+ struct windows_device_priv *priv = __device_priv(transfer->dev_handle->dev);
+
+ return priv->usb_interface[transfer_priv->interface_number].apib->abort_control(itransfer);
+}
+
+static int composite_abort_transfers(struct usbi_transfer *itransfer)
+{
+ struct libusb_transfer *transfer = __USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer);
+ struct windows_transfer_priv *transfer_priv = usbi_transfer_get_os_priv(itransfer);
+ struct windows_device_priv *priv = __device_priv(transfer->dev_handle->dev);
+
+ return priv->usb_interface[transfer_priv->interface_number].apib->abort_transfers(itransfer);
+}
+
+static int composite_reset_device(struct libusb_device_handle *dev_handle)
+{
+ struct windows_device_priv *priv = __device_priv(dev_handle->dev);
+ unsigned api;
+ int r;
+ uint8_t flag = 1<<USB_API_WINUSB;
+
+ for (api=USB_API_WINUSB; api<USB_API_MAX; api++) {
+ if (priv->composite_api_flags & flag) {
+ r = usb_api_backend[api].reset_device(dev_handle);
+ if (r != LIBUSB_SUCCESS) {
+ return r;
+ }
+ }
+ flag <<= 1;
+ }
+ return LIBUSB_SUCCESS;
+}
+
+static int composite_copy_transfer_data(struct usbi_transfer *itransfer, uint32_t io_size)
+{
+ struct libusb_transfer *transfer = __USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer);
+ struct windows_transfer_priv *transfer_priv = usbi_transfer_get_os_priv(itransfer);
+ struct windows_device_priv *priv = __device_priv(transfer->dev_handle->dev);
+
+ return priv->usb_interface[transfer_priv->interface_number].apib->copy_transfer_data(itransfer, io_size);
+}
--- /dev/null
+/*
+ * Windows backend for libusb 1.0
+ * Copyright (C) 2009-2010 Pete Batard <pbatard@gmail.com>
+ * With contributions from Michael Plante, Orin Eman et al.
+ * Parts of this code adapted from libusb-win32-v1 by Stephan Meyer
+ * Major code testing contribution by Xiaofan Chen
+ *
+ * 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
+ */
+
+#pragma once
+
+#if defined(_MSC_VER)
+// disable /W4 MSVC warnings that are benign
+#pragma warning(disable:4127) // conditional expression is constant
+#pragma warning(disable:4100) // unreferenced formal parameter
+#pragma warning(disable:4214) // bit field types other than int
+#pragma warning(disable:4201) // nameless struct/union
+#endif
+
+// Windows API default is uppercase - ugh!
+#if !defined(bool)
+#define bool BOOL
+#endif
+#if !defined(true)
+#define true TRUE
+#endif
+#if !defined(false)
+#define false FALSE
+#endif
+
+#if !defined(libusb_bus_t)
+#define libusb_bus_t uint8_t
+#define LIBUSB_BUS_MAX UINT8_MAX
+#endif
+#if !defined(libusb_devaddr_t)
+#define libusb_devaddr_t uint8_t
+#define LIBUSB_DEVADDR_MAX UINT8_MAX
+#endif
+
+// Missing from MSVC6 setupapi.h
+#if !defined(SPDRP_ADDRESS)
+#define SPDRP_ADDRESS 28
+#endif
+#if !defined(SPDRP_INSTALL_STATE)
+#define SPDRP_INSTALL_STATE 34
+#endif
+
+#if defined(__CYGWIN__ )
+// cygwin produces a warning unless these prototypes are defined
+extern int _snprintf(char *buffer, size_t count, const char *format, ...);
+extern char *_strdup(const char *strSource);
+// _beginthreadex is MSVCRT => unavailable for cygwin. Fallback to using CreateThread
+#define _beginthreadex(a, b, c, d, e, f) CreateThread(a, b, (LPTHREAD_START_ROUTINE)c, d, e, f)
+#endif
+#define safe_free(p) do {if (p != NULL) {free(p); p = NULL;}} while(0)
+#define safe_closehandle(h) do {if (h != INVALID_HANDLE_VALUE) {CloseHandle(h); h = INVALID_HANDLE_VALUE;}} while(0)
+#define safe_strncpy(dst, dst_max, src, count) strncpy(dst, src, min(count, dst_max - 1))
+#define safe_strcpy(dst, dst_max, src) safe_strncpy(dst, dst_max, src, strlen(src)+1)
+#define safe_strncat(dst, dst_max, src, count) strncat(dst, src, min(count, dst_max - strlen(dst) - 1))
+#define safe_strcat(dst, dst_max, src) safe_strncat(dst, dst_max, src, strlen(src)+1)
+#define safe_strcmp(str1, str2) strcmp(((str1==NULL)?"<NULL>":str1), ((str2==NULL)?"<NULL>":str2))
+#define safe_strncmp(str1, str2, count) strncmp(((str1==NULL)?"<NULL>":str1), ((str2==NULL)?"<NULL>":str2), count)
+#define safe_strlen(str) ((str==NULL)?0:strlen(str))
+#define safe_sprintf _snprintf
+#define safe_unref_device(dev) do {if (dev != NULL) {libusb_unref_device(dev); dev = NULL;}} while(0)
+#define wchar_to_utf8_ms(wstr, str, strlen) WideCharToMultiByte(CP_UTF8, 0, wstr, -1, str, strlen, NULL, NULL)
+inline void upperize(char* str) {
+ size_t i;
+ if (str == NULL) return;
+ for (i=0; i<strlen(str); i++)
+ str[i] = (char)toupper((int)str[i]);
+}
+
+#define MAX_CTRL_BUFFER_LENGTH 4096
+#define MAX_USB_DEVICES 256
+#define MAX_USB_STRING_LENGTH 128
+#define MAX_HID_REPORT_SIZE 1024
+#define MAX_HID_DESCRIPTOR_SIZE 256
+#define MAX_GUID_STRING_LENGTH 40
+#define MAX_PATH_LENGTH 128
+#define MAX_KEY_LENGTH 256
+#define MAX_TIMER_SEMAPHORES 128
+#define TIMER_REQUEST_RETRY_MS 100
+#define ERR_BUFFER_SIZE 256
+
+// Handle code for HID interface that have been claimed ("dibs")
+#define INTERFACE_CLAIMED ((HANDLE)(intptr_t)0xD1B5)
+// Additional return code for HID operations that completed synchronously
+#define LIBUSB_COMPLETED (LIBUSB_SUCCESS + 1)
+
+// http://msdn.microsoft.com/en-us/library/bb663109.aspx
+// http://msdn.microsoft.com/en-us/library/bb663093.aspx
+#if !defined(GUID_DEVINTERFACE_USB_HOST_CONTROLLER)
+const GUID GUID_DEVINTERFACE_USB_HOST_CONTROLLER = { 0x3ABF6F2D, 0x71C4, 0x462A, {0x8A, 0x92, 0x1E, 0x68, 0x61, 0xE6, 0xAF, 0x27} };
+#endif
+#if !defined(GUID_DEVINTERFACE_USB_DEVICE)
+const GUID GUID_DEVINTERFACE_USB_DEVICE = { 0xA5DCBF10, 0x6530, 0x11D2, {0x90, 0x1F, 0x00, 0xC0, 0x4F, 0xB9, 0x51, 0xED} };
+#endif
+
+
+/*
+ * Multiple USB API backend support
+ */
+#define USB_API_UNSUPPORTED 0
+#define USB_API_COMPOSITE 1
+#define USB_API_WINUSB 2
+#define USB_API_HID 3
+#define USB_API_MAX 4
+
+const GUID CLASS_GUID_UNSUPPORTED = { 0x00000000, 0x0000, 0x0000, {0x00, 0x00, 0x00, 0x00, 0x00, 0x0F, 0x57, 0xDA} };
+const GUID CLASS_GUID_HID = { 0x745A17A0, 0x74D3, 0x11D0, {0xB6, 0xFE, 0x00, 0xA0, 0xC9, 0x0F, 0x57, 0xDA} };
+const GUID CLASS_GUID_LIBUSB_WINUSB = { 0x78A1C341, 0x4539, 0x11D3, {0xB8, 0x8D, 0x00, 0xC0, 0x4F, 0xAD, 0x51, 0x71} };
+const GUID CLASS_GUID_COMPOSITE = { 0x36FC9E60, 0xC465, 0x11cF, {0x80, 0x56, 0x44, 0x45, 0x53, 0x54, 0x00, 0x00} };
+
+struct windows_usb_api_backend {
+ const uint8_t id;
+ const GUID *class_guid; // The Class GUID (for fallback in case the driver name cannot be read)
+ const char **driver_name_list; // Driver name, without .sys, e.g. "usbccgp"
+ const uint8_t nb_driver_names;
+ int (*init)(struct libusb_context *ctx);
+ int (*exit)(void);
+ int (*open)(struct libusb_device_handle *dev_handle);
+ void (*close)(struct libusb_device_handle *dev_handle);
+ int (*claim_interface)(struct libusb_device_handle *dev_handle, int iface);
+ int (*set_interface_altsetting)(struct libusb_device_handle *dev_handle, int iface, int altsetting);
+ int (*release_interface)(struct libusb_device_handle *dev_handle, int iface);
+ int (*clear_halt)(struct libusb_device_handle *dev_handle, unsigned char endpoint);
+ int (*reset_device)(struct libusb_device_handle *dev_handle);
+ int (*submit_bulk_transfer)(struct usbi_transfer *itransfer);
+ int (*submit_iso_transfer)(struct usbi_transfer *itransfer);
+ int (*submit_control_transfer)(struct usbi_transfer *itransfer);
+ int (*abort_control)(struct usbi_transfer *itransfer);
+ int (*abort_transfers)(struct usbi_transfer *itransfer);
+ int (*copy_transfer_data)(struct usbi_transfer *itransfer, uint32_t io_size);
+};
+
+extern const struct windows_usb_api_backend usb_api_backend[USB_API_MAX];
+
+#define PRINT_UNSUPPORTED_API(fname) \
+ usbi_dbg("unsupported API call for '" \
+ #fname "' (unrecognized device driver)"); \
+ return LIBUSB_ERROR_NOT_SUPPORTED;
+
+/*
+ * private structures definition
+ * with inline pseudo constructors/destructors
+ */
+
+// HCDs
+struct windows_hcd_priv {
+ char *path;
+ struct windows_hcd_priv *next;
+};
+
+static inline void windows_hcd_priv_init(struct windows_hcd_priv* p) {
+ p->path = NULL;
+ p->next = NULL;
+}
+
+static inline void windows_hcd_priv_release(struct windows_hcd_priv* p) {
+ safe_free(p->path);
+}
+
+// TODO (v2+): move hid desc to libusb.h?
+struct libusb_hid_descriptor {
+ uint8_t bLength;
+ uint8_t bDescriptorType;
+ uint16_t bcdHID;
+ uint8_t bCountryCode;
+ uint8_t bNumDescriptors;
+ uint8_t bClassDescriptorType;
+ uint16_t wClassDescriptorLength;
+};
+#define LIBUSB_DT_HID_SIZE 9
+#define HID_MAX_CONFIG_DESC_SIZE (LIBUSB_DT_CONFIG_SIZE + LIBUSB_DT_INTERFACE_SIZE \
+ + LIBUSB_DT_HID_SIZE + 2 * LIBUSB_DT_ENDPOINT_SIZE)
+#define HID_MAX_REPORT_SIZE 1024
+#define HID_IN_EP 0x81
+#define HID_OUT_EP 0x02
+#define LIBUSB_REQ_RECIPIENT(request_type) ((request_type) & 0x1F)
+#define LIBUSB_REQ_TYPE(request_type) ((request_type) & (0x03 << 5))
+#define LIBUSB_REQ_IN(request_type) ((request_type) & LIBUSB_ENDPOINT_IN)
+#define LIBUSB_REQ_OUT(request_type) (!LIBUSB_REQ_IN(request_type))
+
+enum libusb_hid_request_type {
+ HID_REQ_GET_REPORT = 0x01,
+ HID_REQ_GET_IDLE = 0x02,
+ HID_REQ_GET_PROTOCOL = 0x03,
+ HID_REQ_SET_REPORT = 0x09,
+ HID_REQ_SET_IDLE = 0x0A,
+ HID_REQ_SET_PROTOCOL = 0x0B
+};
+
+enum libusb_hid_report_type {
+ HID_REPORT_TYPE_INPUT = 0x01,
+ HID_REPORT_TYPE_OUTPUT = 0x02,
+ HID_REPORT_TYPE_FEATURE = 0x03
+};
+
+struct hid_device_priv {
+ uint16_t vid;
+ uint16_t pid;
+ uint8_t config;
+ bool uses_report_ids[3]; // input, ouptput, feature
+ uint16_t input_report_size;
+ uint16_t output_report_size;
+ uint16_t feature_report_size;
+ WCHAR string[3][MAX_USB_STRING_LENGTH];
+ uint8_t string_index[3]; // man, prod, ser
+};
+
+typedef struct libusb_device_descriptor USB_DEVICE_DESCRIPTOR, *PUSB_DEVICE_DESCRIPTOR;
+struct windows_device_priv {
+ struct libusb_device *parent_dev; // access to parent is required for usermode ops
+ ULONG connection_index; // also required for some usermode ops
+ char *path; // path used by Windows to reference the USB node
+ struct windows_usb_api_backend const *apib;
+ struct {
+ char *path; // each interface needs a Windows device interface path,
+ struct windows_usb_api_backend const *apib; // an API backend (multiple drivers support),
+ int8_t nb_endpoints; // and a set of endpoint addresses (USB_MAXENDPOINTS)
+ uint8_t *endpoint;
+ bool restricted_functionality; // indicates if the interface functionality is restricted
+ // by Windows (eg. HID keyboards or mice cannot do R/W)
+ } usb_interface[USB_MAXINTERFACES];
+ uint8_t composite_api_flags; // HID and composite devices require additional data
+ struct hid_device_priv *hid;
+ uint8_t active_config;
+ USB_DEVICE_DESCRIPTOR dev_descriptor;
+ unsigned char **config_descriptor; // list of pointers to the cached config descriptors
+};
+
+static inline void windows_device_priv_init(struct windows_device_priv* p) {
+ int i;
+ p->parent_dev = NULL;
+ p->connection_index = 0;
+ p->path = NULL;
+ p->apib = &usb_api_backend[USB_API_UNSUPPORTED];
+ p->composite_api_flags = 0;
+ p->hid = NULL;
+ p->active_config = 0;
+ p->config_descriptor = NULL;
+ memset(&(p->dev_descriptor), 0, sizeof(USB_DEVICE_DESCRIPTOR));
+ for (i=0; i<USB_MAXINTERFACES; i++) {
+ p->usb_interface[i].path = NULL;
+ p->usb_interface[i].apib = &usb_api_backend[USB_API_UNSUPPORTED];
+ p->usb_interface[i].nb_endpoints = 0;
+ p->usb_interface[i].endpoint = NULL;
+ p->usb_interface[i].restricted_functionality = false;
+ }
+}
+
+static inline void windows_device_priv_release(struct windows_device_priv* p, int num_configurations) {
+ int i;
+ safe_free(p->path);
+ if ((num_configurations > 0) && (p->config_descriptor != NULL)) {
+ for (i=0; i < num_configurations; i++)
+ safe_free(p->config_descriptor[i]);
+ }
+ safe_free(p->config_descriptor);
+ safe_free(p->hid);
+ for (i=0; i<USB_MAXINTERFACES; i++) {
+ safe_free(p->usb_interface[i].path);
+ safe_free(p->usb_interface[i].endpoint);
+ }
+}
+
+static inline struct windows_device_priv *__device_priv(struct libusb_device *dev) {
+ return (struct windows_device_priv *)dev->os_priv;
+}
+
+struct interface_handle_t {
+ HANDLE dev_handle; // WinUSB needs an extra handle for the file
+ HANDLE api_handle; // used by the API to communicate with the device
+};
+
+struct windows_device_handle_priv {
+ int active_interface;
+ struct interface_handle_t interface_handle[USB_MAXINTERFACES];
+#if defined(AUTO_CLAIM)
+ int autoclaim_count[USB_MAXINTERFACES]; // For auto-release
+#endif
+};
+
+static inline struct windows_device_handle_priv *__device_handle_priv(
+ struct libusb_device_handle *handle)
+{
+ return (struct windows_device_handle_priv *) handle->os_priv;
+}
+
+// used for async polling functions
+struct windows_transfer_priv {
+ struct winfd pollable_fd;
+ uint8_t interface_number;
+ uint8_t *hid_buffer; // 1 byte extended data buffer, required for HID
+ uint8_t *hid_dest; // transfer buffer destination, required for HID
+ size_t hid_expected_size;
+};
+
+
+/*
+ * API macros - from libusb-win32 1.x
+ */
+#define DLL_DECLARE(api, ret, name, args) \
+ typedef ret (api * __dll_##name##_t)args; __dll_##name##_t name
+
+#define DLL_LOAD(dll, name, ret_on_failure) \
+ do { \
+ HMODULE h = GetModuleHandle(#dll); \
+ if (!h) \
+ h = LoadLibrary(#dll); \
+ if (!h) { \
+ if (ret_on_failure) { return LIBUSB_ERROR_NOT_FOUND; }\
+ else { break; } \
+ } \
+ name = (__dll_##name##_t)GetProcAddress(h, #name); \
+ if (name) break; \
+ name = (__dll_##name##_t)GetProcAddress(h, #name "A"); \
+ if (name) break; \
+ name = (__dll_##name##_t)GetProcAddress(h, #name "W"); \
+ if (name) break; \
+ if(ret_on_failure) \
+ return LIBUSB_ERROR_NOT_FOUND; \
+ } while(0)
+
+
+/*
+ * Windows DDK API definitions. Most of it copied from MinGW's includes
+ */
+typedef DWORD DEVNODE, DEVINST;
+typedef DEVNODE *PDEVNODE, *PDEVINST;
+typedef DWORD RETURN_TYPE;
+typedef RETURN_TYPE CONFIGRET;
+
+#define CR_SUCCESS 0x00000000
+#define CR_NO_SUCH_DEVNODE 0x0000000D
+
+#define USB_DEVICE_DESCRIPTOR_TYPE LIBUSB_DT_DEVICE
+#define USB_CONFIGURATION_DESCRIPTOR_TYPE LIBUSB_DT_CONFIG
+#define USB_STRING_DESCRIPTOR_TYPE LIBUSB_DT_STRING
+#define USB_INTERFACE_DESCRIPTOR_TYPE LIBUSB_DT_INTERFACE
+#define USB_ENDPOINT_DESCRIPTOR_TYPE LIBUSB_DT_ENDPOINT
+
+#define USB_REQUEST_GET_STATUS LIBUSB_REQUEST_GET_STATUS
+#define USB_REQUEST_CLEAR_FEATURE LIBUSB_REQUEST_CLEAR_FEATURE
+#define USB_REQUEST_SET_FEATURE LIBUSB_REQUEST_SET_FEATURE
+#define USB_REQUEST_SET_ADDRESS LIBUSB_REQUEST_SET_ADDRESS
+#define USB_REQUEST_GET_DESCRIPTOR LIBUSB_REQUEST_GET_DESCRIPTOR
+#define USB_REQUEST_SET_DESCRIPTOR LIBUSB_REQUEST_SET_DESCRIPTOR
+#define USB_REQUEST_GET_CONFIGURATION LIBUSB_REQUEST_GET_CONFIGURATION
+#define USB_REQUEST_SET_CONFIGURATION LIBUSB_REQUEST_SET_CONFIGURATION
+#define USB_REQUEST_GET_INTERFACE LIBUSB_REQUEST_GET_INTERFACE
+#define USB_REQUEST_SET_INTERFACE LIBUSB_REQUEST_SET_INTERFACE
+#define USB_REQUEST_SYNC_FRAME LIBUSB_REQUEST_SYNCH_FRAME
+
+#define HCD_GET_ROOT_HUB_NAME 258
+#define USB_GET_NODE_INFORMATION 258
+#define USB_GET_NODE_CONNECTION_INFORMATION 259
+#define USB_GET_DESCRIPTOR_FROM_NODE_CONNECTION 260
+#define USB_GET_NODE_CONNECTION_NAME 261
+#define USB_GET_HUB_CAPABILITIES 271
+#if !defined(USB_GET_HUB_CAPABILITIES_EX)
+#define USB_GET_HUB_CAPABILITIES_EX 276
+#endif
+
+#ifndef METHOD_BUFFERED
+#define METHOD_BUFFERED 0
+#endif
+#ifndef FILE_ANY_ACCESS
+#define FILE_ANY_ACCESS 0x00000000
+#endif
+#ifndef FILE_DEVICE_UNKNOWN
+#define FILE_DEVICE_UNKNOWN 0x00000022
+#endif
+#ifndef FILE_DEVICE_USB
+#define FILE_DEVICE_USB FILE_DEVICE_UNKNOWN
+#endif
+
+#ifndef CTL_CODE
+#define CTL_CODE(DeviceType, Function, Method, Access)( \
+ ((DeviceType) << 16) | ((Access) << 14) | ((Function) << 2) | (Method))
+#endif
+
+typedef enum _USB_CONNECTION_STATUS {
+ NoDeviceConnected,
+ DeviceConnected,
+ DeviceFailedEnumeration,
+ DeviceGeneralFailure,
+ DeviceCausedOvercurrent,
+ DeviceNotEnoughPower,
+ DeviceNotEnoughBandwidth,
+ DeviceHubNestedTooDeeply,
+ DeviceInLegacyHub
+} USB_CONNECTION_STATUS, *PUSB_CONNECTION_STATUS;
+
+typedef enum _USB_HUB_NODE {
+ UsbHub,
+ UsbMIParent
+} USB_HUB_NODE;
+
+/* Cfgmgr32.dll interface */
+DLL_DECLARE(WINAPI, CONFIGRET, CM_Get_Parent, (PDEVINST, DEVINST, ULONG));
+DLL_DECLARE(WINAPI, CONFIGRET, CM_Get_Child, (PDEVINST, DEVINST, ULONG));
+DLL_DECLARE(WINAPI, CONFIGRET, CM_Get_Sibling, (PDEVINST, DEVINST, ULONG));
+DLL_DECLARE(WINAPI, CONFIGRET, CM_Get_Device_IDA, (DEVINST, PCHAR, ULONG, ULONG));
+DLL_DECLARE(WINAPI, CONFIGRET, CM_Get_Device_IDW, (DEVINST, PWCHAR, ULONG, ULONG));
+
+#ifdef UNICODE
+#define CM_Get_Device_ID CM_Get_Device_IDW
+#else
+#define CM_Get_Device_ID CM_Get_Device_IDA
+#endif /* UNICODE */
+
+#define IOCTL_USB_GET_HUB_CAPABILITIES_EX \
+ CTL_CODE( FILE_DEVICE_USB, USB_GET_HUB_CAPABILITIES_EX, METHOD_BUFFERED, FILE_ANY_ACCESS)
+
+#define IOCTL_USB_GET_HUB_CAPABILITIES \
+ CTL_CODE(FILE_DEVICE_USB, USB_GET_HUB_CAPABILITIES, METHOD_BUFFERED, FILE_ANY_ACCESS)
+
+#define IOCTL_USB_GET_DESCRIPTOR_FROM_NODE_CONNECTION \
+ CTL_CODE(FILE_DEVICE_USB, USB_GET_DESCRIPTOR_FROM_NODE_CONNECTION, METHOD_BUFFERED, FILE_ANY_ACCESS)
+
+#define IOCTL_USB_GET_ROOT_HUB_NAME \
+ CTL_CODE(FILE_DEVICE_USB, HCD_GET_ROOT_HUB_NAME, METHOD_BUFFERED, FILE_ANY_ACCESS)
+
+#define IOCTL_USB_GET_NODE_INFORMATION \
+ CTL_CODE(FILE_DEVICE_USB, USB_GET_NODE_INFORMATION, METHOD_BUFFERED, FILE_ANY_ACCESS)
+
+#define IOCTL_USB_GET_NODE_CONNECTION_INFORMATION \
+ CTL_CODE(FILE_DEVICE_USB, USB_GET_NODE_CONNECTION_INFORMATION, METHOD_BUFFERED, FILE_ANY_ACCESS)
+
+#define IOCTL_USB_GET_NODE_CONNECTION_ATTRIBUTES \
+ CTL_CODE(FILE_DEVICE_USB, USB_GET_NODE_CONNECTION_ATTRIBUTES, METHOD_BUFFERED, FILE_ANY_ACCESS)
+
+#define IOCTL_USB_GET_NODE_CONNECTION_NAME \
+ CTL_CODE(FILE_DEVICE_USB, USB_GET_NODE_CONNECTION_NAME, METHOD_BUFFERED, FILE_ANY_ACCESS)
+
+// Most of the structures below need to be packed
+#pragma pack(push, 1)
+
+typedef struct _USB_INTERFACE_DESCRIPTOR {
+ UCHAR bLength;
+ UCHAR bDescriptorType;
+ UCHAR bInterfaceNumber;
+ UCHAR bAlternateSetting;
+ UCHAR bNumEndpoints;
+ UCHAR bInterfaceClass;
+ UCHAR bInterfaceSubClass;
+ UCHAR bInterfaceProtocol;
+ UCHAR iInterface;
+} USB_INTERFACE_DESCRIPTOR, *PUSB_INTERFACE_DESCRIPTOR;
+
+typedef struct _USB_CONFIGURATION_DESCRIPTOR {
+ UCHAR bLength;
+ UCHAR bDescriptorType;
+ USHORT wTotalLength;
+ UCHAR bNumInterfaces;
+ UCHAR bConfigurationValue;
+ UCHAR iConfiguration;
+ UCHAR bmAttributes;
+ UCHAR MaxPower;
+} USB_CONFIGURATION_DESCRIPTOR, *PUSB_CONFIGURATION_DESCRIPTOR;
+
+typedef struct _USB_CONFIGURATION_DESCRIPTOR_SHORT {
+ struct {
+ ULONG ConnectionIndex;
+ struct {
+ UCHAR bmRequest;
+ UCHAR bRequest;
+ USHORT wValue;
+ USHORT wIndex;
+ USHORT wLength;
+ } SetupPacket;
+ } req;
+ USB_CONFIGURATION_DESCRIPTOR data;
+} USB_CONFIGURATION_DESCRIPTOR_SHORT;
+
+typedef struct _USB_ENDPOINT_DESCRIPTOR {
+ UCHAR bLength;
+ UCHAR bDescriptorType;
+ UCHAR bEndpointAddress;
+ UCHAR bmAttributes;
+ USHORT wMaxPacketSize;
+ UCHAR bInterval;
+} USB_ENDPOINT_DESCRIPTOR, *PUSB_ENDPOINT_DESCRIPTOR;
+
+typedef struct _USB_DESCRIPTOR_REQUEST {
+ ULONG ConnectionIndex;
+ struct {
+ UCHAR bmRequest;
+ UCHAR bRequest;
+ USHORT wValue;
+ USHORT wIndex;
+ USHORT wLength;
+ } SetupPacket;
+// UCHAR Data[0];
+} USB_DESCRIPTOR_REQUEST, *PUSB_DESCRIPTOR_REQUEST;
+
+typedef struct _USB_HUB_DESCRIPTOR {
+ UCHAR bDescriptorLength;
+ UCHAR bDescriptorType;
+ UCHAR bNumberOfPorts;
+ USHORT wHubCharacteristics;
+ UCHAR bPowerOnToPowerGood;
+ UCHAR bHubControlCurrent;
+ UCHAR bRemoveAndPowerMask[64];
+} USB_HUB_DESCRIPTOR, *PUSB_HUB_DESCRIPTOR;
+
+typedef struct _USB_ROOT_HUB_NAME {
+ ULONG ActualLength;
+ WCHAR RootHubName[1];
+} USB_ROOT_HUB_NAME, *PUSB_ROOT_HUB_NAME;
+
+typedef struct _USB_ROOT_HUB_NAME_FIXED {
+ ULONG ActualLength;
+ WCHAR RootHubName[MAX_PATH_LENGTH];
+} USB_ROOT_HUB_NAME_FIXED;
+
+typedef struct _USB_NODE_CONNECTION_NAME {
+ ULONG ConnectionIndex;
+ ULONG ActualLength;
+ WCHAR NodeName[1];
+} USB_NODE_CONNECTION_NAME, *PUSB_NODE_CONNECTION_NAME;
+
+typedef struct _USB_NODE_CONNECTION_NAME_FIXED {
+ ULONG ConnectionIndex;
+ ULONG ActualLength;
+ WCHAR NodeName[MAX_PATH_LENGTH];
+} USB_NODE_CONNECTION_NAME_FIXED;
+
+typedef struct _USB_HUB_NAME_FIXED {
+ union {
+ USB_ROOT_HUB_NAME_FIXED root;
+ USB_NODE_CONNECTION_NAME_FIXED node;
+ } u;
+} USB_HUB_NAME_FIXED;
+
+
+typedef struct _USB_HUB_INFORMATION {
+ USB_HUB_DESCRIPTOR HubDescriptor;
+ BOOLEAN HubIsBusPowered;
+} USB_HUB_INFORMATION, *PUSB_HUB_INFORMATION;
+
+typedef struct _USB_MI_PARENT_INFORMATION {
+ ULONG NumberOfInterfaces;
+} USB_MI_PARENT_INFORMATION, *PUSB_MI_PARENT_INFORMATION;
+
+typedef struct _USB_NODE_INFORMATION {
+ USB_HUB_NODE NodeType;
+ union {
+ USB_HUB_INFORMATION HubInformation;
+ USB_MI_PARENT_INFORMATION MiParentInformation;
+ } u;
+} USB_NODE_INFORMATION, *PUSB_NODE_INFORMATION;
+
+typedef struct _USB_PIPE_INFO {
+ USB_ENDPOINT_DESCRIPTOR EndpointDescriptor;
+ ULONG ScheduleOffset;
+} USB_PIPE_INFO, *PUSB_PIPE_INFO;
+
+typedef struct _USB_NODE_CONNECTION_INFORMATION {
+ ULONG ConnectionIndex;
+ USB_DEVICE_DESCRIPTOR DeviceDescriptor;
+ UCHAR CurrentConfigurationValue;
+ BOOLEAN LowSpeed;
+ BOOLEAN DeviceIsHub;
+ USHORT DeviceAddress;
+ ULONG NumberOfOpenPipes;
+ USB_CONNECTION_STATUS ConnectionStatus;
+// USB_PIPE_INFO PipeList[0];
+} USB_NODE_CONNECTION_INFORMATION, *PUSB_NODE_CONNECTION_INFORMATION;
+
+typedef struct _USB_HUB_CAP_FLAGS {
+ ULONG HubIsHighSpeedCapable:1;
+ ULONG HubIsHighSpeed:1;
+ ULONG HubIsMultiTtCapable:1;
+ ULONG HubIsMultiTt:1;
+ ULONG HubIsRoot:1;
+ ULONG HubIsArmedWakeOnConnect:1;
+ ULONG ReservedMBZ:26;
+} USB_HUB_CAP_FLAGS, *PUSB_HUB_CAP_FLAGS;
+
+typedef struct _USB_HUB_CAPABILITIES {
+ ULONG HubIs2xCapable : 1;
+} USB_HUB_CAPABILITIES, *PUSB_HUB_CAPABILITIES;
+
+typedef struct _USB_HUB_CAPABILITIES_EX {
+ USB_HUB_CAP_FLAGS CapabilityFlags;
+} USB_HUB_CAPABILITIES_EX, *PUSB_HUB_CAPABILITIES_EX;
+
+#pragma pack(pop)
+
+/* winusb.dll interface */
+
+#define SHORT_PACKET_TERMINATE 0x01
+#define AUTO_CLEAR_STALL 0x02
+#define PIPE_TRANSFER_TIMEOUT 0x03
+#define IGNORE_SHORT_PACKETS 0x04
+#define ALLOW_PARTIAL_READS 0x05
+#define AUTO_FLUSH 0x06
+#define RAW_IO 0x07
+#define MAXIMUM_TRANSFER_SIZE 0x08
+#define AUTO_SUSPEND 0x81
+#define SUSPEND_DELAY 0x83
+#define DEVICE_SPEED 0x01
+#define LowSpeed 0x01
+#define FullSpeed 0x02
+#define HighSpeed 0x03
+
+typedef enum _USBD_PIPE_TYPE {
+ UsbdPipeTypeControl,
+ UsbdPipeTypeIsochronous,
+ UsbdPipeTypeBulk,
+ UsbdPipeTypeInterrupt
+} USBD_PIPE_TYPE;
+
+typedef struct {
+ USBD_PIPE_TYPE PipeType;
+ UCHAR PipeId;
+ USHORT MaximumPacketSize;
+ UCHAR Interval;
+} WINUSB_PIPE_INFORMATION, *PWINUSB_PIPE_INFORMATION;
+
+#pragma pack(1)
+typedef struct {
+ UCHAR request_type;
+ UCHAR request;
+ USHORT value;
+ USHORT index;
+ USHORT length;
+} WINUSB_SETUP_PACKET, *PWINUSB_SETUP_PACKET;
+#pragma pack()
+
+typedef void *WINUSB_INTERFACE_HANDLE, *PWINUSB_INTERFACE_HANDLE;
+
+DLL_DECLARE(WINAPI, BOOL, WinUsb_Initialize, (HANDLE, PWINUSB_INTERFACE_HANDLE));
+DLL_DECLARE(WINAPI, BOOL, WinUsb_Free, (WINUSB_INTERFACE_HANDLE));
+DLL_DECLARE(WINAPI, BOOL, WinUsb_GetAssociatedInterface, (WINUSB_INTERFACE_HANDLE, UCHAR, PWINUSB_INTERFACE_HANDLE));
+DLL_DECLARE(WINAPI, BOOL, WinUsb_GetDescriptor, (WINUSB_INTERFACE_HANDLE, UCHAR, UCHAR, USHORT, PUCHAR, ULONG, PULONG));
+DLL_DECLARE(WINAPI, BOOL, WinUsb_QueryInterfaceSettings, (WINUSB_INTERFACE_HANDLE, UCHAR, PUSB_INTERFACE_DESCRIPTOR));
+DLL_DECLARE(WINAPI, BOOL, WinUsb_QueryDeviceInformation, (WINUSB_INTERFACE_HANDLE, ULONG, PULONG, PVOID));
+DLL_DECLARE(WINAPI, BOOL, WinUsb_SetCurrentAlternateSetting, (WINUSB_INTERFACE_HANDLE, UCHAR));
+DLL_DECLARE(WINAPI, BOOL, WinUsb_GetCurrentAlternateSetting, (WINUSB_INTERFACE_HANDLE, PUCHAR));
+DLL_DECLARE(WINAPI, BOOL, WinUsb_QueryPipe, (WINUSB_INTERFACE_HANDLE, UCHAR, UCHAR, PWINUSB_PIPE_INFORMATION));
+DLL_DECLARE(WINAPI, BOOL, WinUsb_SetPipePolicy, (WINUSB_INTERFACE_HANDLE, UCHAR, ULONG, ULONG, PVOID));
+DLL_DECLARE(WINAPI, BOOL, WinUsb_GetPipePolicy, (WINUSB_INTERFACE_HANDLE, UCHAR, ULONG, PULONG, PVOID));
+DLL_DECLARE(WINAPI, BOOL, WinUsb_ReadPipe, (WINUSB_INTERFACE_HANDLE, UCHAR, PUCHAR, ULONG, PULONG, LPOVERLAPPED));
+DLL_DECLARE(WINAPI, BOOL, WinUsb_WritePipe, (WINUSB_INTERFACE_HANDLE, UCHAR, PUCHAR, ULONG, PULONG, LPOVERLAPPED));
+DLL_DECLARE(WINAPI, BOOL, WinUsb_ControlTransfer, (WINUSB_INTERFACE_HANDLE, WINUSB_SETUP_PACKET, PUCHAR, ULONG, PULONG, LPOVERLAPPED));
+DLL_DECLARE(WINAPI, BOOL, WinUsb_ResetPipe, (WINUSB_INTERFACE_HANDLE, UCHAR));
+DLL_DECLARE(WINAPI, BOOL, WinUsb_AbortPipe, (WINUSB_INTERFACE_HANDLE, UCHAR));
+DLL_DECLARE(WINAPI, BOOL, WinUsb_FlushPipe, (WINUSB_INTERFACE_HANDLE, UCHAR));
+
+/* hid.dll interface */
+
+#define HIDP_STATUS_SUCCESS 0x110000
+typedef void* PHIDP_PREPARSED_DATA;
+
+#pragma pack(1)
+typedef struct {
+ ULONG Size;
+ USHORT VendorID;
+ USHORT ProductID;
+ USHORT VersionNumber;
+} HIDD_ATTRIBUTES, *PHIDD_ATTRIBUTES;
+#pragma pack()
+
+typedef USHORT USAGE;
+typedef struct {
+ USAGE Usage;
+ USAGE UsagePage;
+ USHORT InputReportByteLength;
+ USHORT OutputReportByteLength;
+ USHORT FeatureReportByteLength;
+ USHORT Reserved[17];
+ USHORT NumberLinkCollectionNodes;
+ USHORT NumberInputButtonCaps;
+ USHORT NumberInputValueCaps;
+ USHORT NumberInputDataIndices;
+ USHORT NumberOutputButtonCaps;
+ USHORT NumberOutputValueCaps;
+ USHORT NumberOutputDataIndices;
+ USHORT NumberFeatureButtonCaps;
+ USHORT NumberFeatureValueCaps;
+ USHORT NumberFeatureDataIndices;
+} HIDP_CAPS, *PHIDP_CAPS;
+
+typedef enum _HIDP_REPORT_TYPE {
+ HidP_Input,
+ HidP_Output,
+ HidP_Feature
+} HIDP_REPORT_TYPE;
+
+typedef struct _HIDP_VALUE_CAPS {
+ USAGE UsagePage;
+ UCHAR ReportID;
+ BOOLEAN IsAlias;
+ USHORT BitField;
+ USHORT LinkCollection;
+ USAGE LinkUsage;
+ USAGE LinkUsagePage;
+ BOOLEAN IsRange;
+ BOOLEAN IsStringRange;
+ BOOLEAN IsDesignatorRange;
+ BOOLEAN IsAbsolute;
+ BOOLEAN HasNull;
+ UCHAR Reserved;
+ USHORT BitSize;
+ USHORT ReportCount;
+ USHORT Reserved2[5];
+ ULONG UnitsExp;
+ ULONG Units;
+ LONG LogicalMin, LogicalMax;
+ LONG PhysicalMin, PhysicalMax;
+ union {
+ struct {
+ USAGE UsageMin, UsageMax;
+ USHORT StringMin, StringMax;
+ USHORT DesignatorMin, DesignatorMax;
+ USHORT DataIndexMin, DataIndexMax;
+ } Range;
+ struct {
+ USAGE Usage, Reserved1;
+ USHORT StringIndex, Reserved2;
+ USHORT DesignatorIndex, Reserved3;
+ USHORT DataIndex, Reserved4;
+ } NotRange;
+ } u;
+} HIDP_VALUE_CAPS, *PHIDP_VALUE_CAPS;
+
+DLL_DECLARE(WINAPI, BOOL, HidD_GetAttributes, (HANDLE, PHIDD_ATTRIBUTES));
+DLL_DECLARE(WINAPI, VOID, HidD_GetHidGuid, (LPGUID));
+DLL_DECLARE(WINAPI, BOOL, HidD_GetPreparsedData, (HANDLE, PHIDP_PREPARSED_DATA *));
+DLL_DECLARE(WINAPI, BOOL, HidD_FreePreparsedData, (PHIDP_PREPARSED_DATA));
+DLL_DECLARE(WINAPI, BOOL, HidD_GetManufacturerString, (HANDLE, PVOID, ULONG));
+DLL_DECLARE(WINAPI, BOOL, HidD_GetProductString, (HANDLE, PVOID, ULONG));
+DLL_DECLARE(WINAPI, BOOL, HidD_GetSerialNumberString, (HANDLE, PVOID, ULONG));
+DLL_DECLARE(WINAPI, LONG, HidP_GetCaps, (PHIDP_PREPARSED_DATA, PHIDP_CAPS));
+DLL_DECLARE(WINAPI, BOOL, HidD_SetNumInputBuffers, (HANDLE, ULONG));
+DLL_DECLARE(WINAPI, BOOL, HidD_SetFeature, (HANDLE, PVOID, ULONG));
+DLL_DECLARE(WINAPI, BOOL, HidD_GetFeature, (HANDLE, PVOID, ULONG));
+DLL_DECLARE(WINAPI, BOOL, HidD_GetPhysicalDescriptor, (HANDLE, PVOID, ULONG));
+DLL_DECLARE(WINAPI, BOOL, HidD_GetInputReport, (HANDLE, PVOID, ULONG));
+DLL_DECLARE(WINAPI, BOOL, HidD_SetOutputReport, (HANDLE, PVOID, ULONG));
+DLL_DECLARE(WINAPI, BOOL, HidD_FlushQueue, (HANDLE));
+DLL_DECLARE(WINAPI, BOOL, HidP_GetValueCaps, (HIDP_REPORT_TYPE, PHIDP_VALUE_CAPS, PULONG, PHIDP_PREPARSED_DATA));
projects / platform / upstream / libusb.git / commitdiff