From c6d603981adec7c0099fb48fc3369517b458ee85 Mon Sep 17 00:00:00 2001 From: ZoRo Date: Sat, 19 Feb 2022 21:43:52 +0000 Subject: Compilable rusb for linux --- src/os/windows_winusb.c | 4527 ----------------------------------------------- 1 file changed, 4527 deletions(-) delete mode 100644 src/os/windows_winusb.c (limited to 'src/os/windows_winusb.c') diff --git a/src/os/windows_winusb.c b/src/os/windows_winusb.c deleted file mode 100644 index a03d6a5..0000000 --- a/src/os/windows_winusb.c +++ /dev/null @@ -1,4527 +0,0 @@ -/* - * windows backend for libusb 1.0 - * Copyright © 2009-2012 Pete Batard - * Copyright © 2016-2018 Chris Dickens - * With contributions from Michael Plante, Orin Eman et al. - * Parts of this code adapted from libusb-win32-v1 by Stephan Meyer - * HID Reports IOCTLs inspired from HIDAPI by Alan Ott, Signal 11 Software - * Hash table functions adapted from glibc, by Ulrich Drepper et al. - * 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 - */ - -#include - -#include -#include -#include -#include - -#include "libusbi.h" -#include "windows_winusb.h" - -#define HANDLE_VALID(h) (((h) != NULL) && ((h) != INVALID_HANDLE_VALUE)) - -// The below macro is used in conjunction with safe loops. -#define LOOP_BREAK(err) \ - { \ - r = err; \ - continue; \ - } - -// WinUSB-like API prototypes -static bool winusbx_init(struct libusb_context *ctx); -static void winusbx_exit(void); -static int winusbx_open(int sub_api, struct libusb_device_handle *dev_handle); -static void winusbx_close(int sub_api, struct libusb_device_handle *dev_handle); -static int winusbx_configure_endpoints(int sub_api, struct libusb_device_handle *dev_handle, uint8_t iface); -static int winusbx_claim_interface(int sub_api, struct libusb_device_handle *dev_handle, uint8_t iface); -static int winusbx_release_interface(int sub_api, struct libusb_device_handle *dev_handle, uint8_t iface); -static int winusbx_submit_control_transfer(int sub_api, struct usbi_transfer *itransfer); -static int winusbx_set_interface_altsetting(int sub_api, struct libusb_device_handle *dev_handle, uint8_t iface, uint8_t altsetting); -static int winusbx_submit_iso_transfer(int sub_api, struct usbi_transfer *itransfer); -static int winusbx_submit_bulk_transfer(int sub_api, struct usbi_transfer *itransfer); -static int winusbx_clear_halt(int sub_api, struct libusb_device_handle *dev_handle, unsigned char endpoint); -static int winusbx_cancel_transfer(int sub_api, struct usbi_transfer *itransfer); -static int winusbx_reset_device(int sub_api, struct libusb_device_handle *dev_handle); -static enum libusb_transfer_status winusbx_copy_transfer_data(int sub_api, struct usbi_transfer *itransfer, DWORD length); -// HID API prototypes -static bool hid_init(struct libusb_context *ctx); -static void hid_exit(void); -static int hid_open(int sub_api, struct libusb_device_handle *dev_handle); -static void hid_close(int sub_api, struct libusb_device_handle *dev_handle); -static int hid_claim_interface(int sub_api, struct libusb_device_handle *dev_handle, uint8_t iface); -static int hid_release_interface(int sub_api, struct libusb_device_handle *dev_handle, uint8_t iface); -static int hid_set_interface_altsetting(int sub_api, struct libusb_device_handle *dev_handle, uint8_t iface, uint8_t altsetting); -static int hid_submit_control_transfer(int sub_api, struct usbi_transfer *itransfer); -static int hid_submit_bulk_transfer(int sub_api, struct usbi_transfer *itransfer); -static int hid_clear_halt(int sub_api, struct libusb_device_handle *dev_handle, unsigned char endpoint); -static int hid_reset_device(int sub_api, struct libusb_device_handle *dev_handle); -static enum libusb_transfer_status hid_copy_transfer_data(int sub_api, struct usbi_transfer *itransfer, DWORD length); -// Composite API prototypes -static int composite_open(int sub_api, struct libusb_device_handle *dev_handle); -static void composite_close(int sub_api, struct libusb_device_handle *dev_handle); -static int composite_claim_interface(int sub_api, struct libusb_device_handle *dev_handle, uint8_t iface); -static int composite_set_interface_altsetting(int sub_api, struct libusb_device_handle *dev_handle, uint8_t iface, uint8_t altsetting); -static int composite_release_interface(int sub_api, struct libusb_device_handle *dev_handle, uint8_t iface); -static int composite_submit_control_transfer(int sub_api, struct usbi_transfer *itransfer); -static int composite_submit_bulk_transfer(int sub_api, struct usbi_transfer *itransfer); -static int composite_submit_iso_transfer(int sub_api, struct usbi_transfer *itransfer); -static int composite_clear_halt(int sub_api, struct libusb_device_handle *dev_handle, unsigned char endpoint); -static int composite_cancel_transfer(int sub_api, struct usbi_transfer *itransfer); -static int composite_reset_device(int sub_api, struct libusb_device_handle *dev_handle); -static enum libusb_transfer_status composite_copy_transfer_data(int sub_api, struct usbi_transfer *itransfer, DWORD length); - -static usbi_mutex_t autoclaim_lock; - -// API globals -static struct winusb_interface WinUSBX[SUB_API_MAX]; -#define CHECK_WINUSBX_AVAILABLE(sub_api) \ - do { \ - if (sub_api == SUB_API_NOTSET) \ - sub_api = priv->sub_api; \ - if (WinUSBX[sub_api].hDll == NULL) \ - return LIBUSB_ERROR_ACCESS; \ - } while (0) - -#define CHECK_HID_AVAILABLE \ - do { \ - if (DLL_HANDLE_NAME(hid) == NULL) \ - return LIBUSB_ERROR_ACCESS; \ - } while (0) - -#if defined(ENABLE_LOGGING) -static const char *guid_to_string(const GUID *guid, char guid_string[MAX_GUID_STRING_LENGTH]) -{ - if (guid == NULL) { - guid_string[0] = '\0'; - return guid_string; - } - - 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 - -static bool string_to_guid(const char guid_string[MAX_GUID_STRING_LENGTH], GUID *guid) -{ - unsigned short tmp[4]; - int num_chars = -1; - char extra; - int r; - - // Unfortunately MinGW complains that '%hhx' is not a valid format specifier, - // even though Visual Studio 2013 and later support it. Rather than complicating - // the logic in this function with '#ifdef's, use a temporary array on the stack - // to store the conversions. - r = sscanf(guid_string, "{%8x-%4hx-%4hx-%4hx-%4hx%4hx%4hx}%n%c", - (unsigned int *)&guid->Data1, &guid->Data2, &guid->Data3, - &tmp[0], &tmp[1], &tmp[2], &tmp[3], &num_chars, &extra); - - if ((r != 7) || (num_chars != 38)) - return false; - - // Extract the bytes from the 2-byte shorts - guid->Data4[0] = (unsigned char)((tmp[0] >> 8) & 0xFF); - guid->Data4[1] = (unsigned char)(tmp[0] & 0xFF); - guid->Data4[2] = (unsigned char)((tmp[1] >> 8) & 0xFF); - guid->Data4[3] = (unsigned char)(tmp[1] & 0xFF); - guid->Data4[4] = (unsigned char)((tmp[2] >> 8) & 0xFF); - guid->Data4[5] = (unsigned char)(tmp[2] & 0xFF); - guid->Data4[6] = (unsigned char)((tmp[3] >> 8) & 0xFF); - guid->Data4[7] = (unsigned char)(tmp[3] & 0xFF); - - return true; -} - -/* - * Normalize Microsoft's paths: return a duplicate of the given path - * with all characters converted to uppercase - */ -static char *normalize_path(const char *path) -{ - char *ret_path = _strdup(path); - char *p; - - if (ret_path == NULL) - return NULL; - - for (p = ret_path; *p != '\0'; p++) - *p = (char)toupper((unsigned char)*p); - - return ret_path; -} - -/* - * Cfgmgr32, AdvAPI32, OLE32 and SetupAPI DLL functions - */ -static bool init_dlls(struct libusb_context *ctx) -{ - DLL_GET_HANDLE(ctx, Cfgmgr32); - DLL_LOAD_FUNC(Cfgmgr32, CM_Get_Parent, true); - DLL_LOAD_FUNC(Cfgmgr32, CM_Get_Child, true); - - // Prefixed to avoid conflict with header files - DLL_GET_HANDLE(ctx, AdvAPI32); - DLL_LOAD_FUNC_PREFIXED(AdvAPI32, p, RegQueryValueExA, true); - DLL_LOAD_FUNC_PREFIXED(AdvAPI32, p, RegCloseKey, true); - - DLL_GET_HANDLE(ctx, SetupAPI); - DLL_LOAD_FUNC_PREFIXED(SetupAPI, p, SetupDiGetClassDevsA, true); - DLL_LOAD_FUNC_PREFIXED(SetupAPI, p, SetupDiEnumDeviceInfo, true); - DLL_LOAD_FUNC_PREFIXED(SetupAPI, p, SetupDiEnumDeviceInterfaces, true); - DLL_LOAD_FUNC_PREFIXED(SetupAPI, p, SetupDiGetDeviceInstanceIdA, true); - DLL_LOAD_FUNC_PREFIXED(SetupAPI, p, SetupDiGetDeviceInterfaceDetailA, true); - DLL_LOAD_FUNC_PREFIXED(SetupAPI, p, SetupDiGetDeviceRegistryPropertyA, true); - DLL_LOAD_FUNC_PREFIXED(SetupAPI, p, SetupDiDestroyDeviceInfoList, true); - DLL_LOAD_FUNC_PREFIXED(SetupAPI, p, SetupDiOpenDevRegKey, true); - DLL_LOAD_FUNC_PREFIXED(SetupAPI, p, SetupDiOpenDeviceInterfaceRegKey, true); - - return true; -} - -static void exit_dlls(void) -{ - DLL_FREE_HANDLE(SetupAPI); - DLL_FREE_HANDLE(AdvAPI32); - DLL_FREE_HANDLE(Cfgmgr32); -} - -/* - * enumerate interfaces for the whole USB class - * - * 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) - * enumerator: the generic USB class 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. - */ -static bool get_devinfo_data(struct libusb_context *ctx, - HDEVINFO *dev_info, SP_DEVINFO_DATA *dev_info_data, const char *enumerator, unsigned _index) -{ - if (_index == 0) { - *dev_info = pSetupDiGetClassDevsA(NULL, enumerator, NULL, DIGCF_PRESENT|DIGCF_ALLCLASSES); - if (*dev_info == INVALID_HANDLE_VALUE) { - usbi_err(ctx, "could not obtain device info set for PnP enumerator '%s': %s", - enumerator, windows_error_str(0)); - return false; - } - } - - dev_info_data->cbSize = sizeof(SP_DEVINFO_DATA); - if (!pSetupDiEnumDeviceInfo(*dev_info, _index, dev_info_data)) { - if (GetLastError() != ERROR_NO_MORE_ITEMS) - usbi_err(ctx, "could not obtain device info data for PnP enumerator '%s' index %u: %s", - enumerator, _index, windows_error_str(0)); - - pSetupDiDestroyDeviceInfoList(*dev_info); - *dev_info = INVALID_HANDLE_VALUE; - return false; - } - return true; -} - -/* - * 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. - */ -static int get_interface_details(struct libusb_context *ctx, HDEVINFO dev_info, - PSP_DEVINFO_DATA dev_info_data, LPCGUID guid, DWORD *_index, char **dev_interface_path) -{ - SP_DEVICE_INTERFACE_DATA dev_interface_data; - PSP_DEVICE_INTERFACE_DETAIL_DATA_A dev_interface_details; - char guid_string[MAX_GUID_STRING_LENGTH]; - DWORD size; - - dev_info_data->cbSize = sizeof(SP_DEVINFO_DATA); - dev_interface_data.cbSize = sizeof(SP_DEVICE_INTERFACE_DATA); - for (;;) { - if (!pSetupDiEnumDeviceInfo(dev_info, *_index, dev_info_data)) { - if (GetLastError() != ERROR_NO_MORE_ITEMS) { - usbi_err(ctx, "Could not obtain device info data for %s index %lu: %s", - guid_to_string(guid, guid_string), ULONG_CAST(*_index), windows_error_str(0)); - return LIBUSB_ERROR_OTHER; - } - - // No more devices - return LIBUSB_SUCCESS; - } - - // Always advance the index for the next iteration - (*_index)++; - - if (pSetupDiEnumDeviceInterfaces(dev_info, dev_info_data, guid, 0, &dev_interface_data)) - break; - - if (GetLastError() != ERROR_NO_MORE_ITEMS) { - usbi_err(ctx, "Could not obtain interface data for %s devInst %lX: %s", - guid_to_string(guid, guid_string), ULONG_CAST(dev_info_data->DevInst), windows_error_str(0)); - return LIBUSB_ERROR_OTHER; - } - - // Device does not have an interface matching this GUID, skip - } - - // Read interface data (dummy + actual) to access the device path - if (!pSetupDiGetDeviceInterfaceDetailA(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 %s devInst %lX: %s", - guid_to_string(guid, guid_string), ULONG_CAST(dev_info_data->DevInst), windows_error_str(0)); - return LIBUSB_ERROR_OTHER; - } - } else { - usbi_err(ctx, "program assertion failed - http://msdn.microsoft.com/en-us/library/ms792901.aspx is wrong"); - return LIBUSB_ERROR_OTHER; - } - - dev_interface_details = malloc(size); - if (dev_interface_details == NULL) { - usbi_err(ctx, "could not allocate interface data for %s devInst %lX", - guid_to_string(guid, guid_string), ULONG_CAST(dev_info_data->DevInst)); - return LIBUSB_ERROR_NO_MEM; - } - - dev_interface_details->cbSize = sizeof(SP_DEVICE_INTERFACE_DETAIL_DATA_A); - if (!pSetupDiGetDeviceInterfaceDetailA(dev_info, &dev_interface_data, - dev_interface_details, size, NULL, NULL)) { - usbi_err(ctx, "could not access interface data (actual) for %s devInst %lX: %s", - guid_to_string(guid, guid_string), ULONG_CAST(dev_info_data->DevInst), windows_error_str(0)); - free(dev_interface_details); - return LIBUSB_ERROR_OTHER; - } - - *dev_interface_path = normalize_path(dev_interface_details->DevicePath); - free(dev_interface_details); - - if (*dev_interface_path == NULL) { - usbi_err(ctx, "could not allocate interface path for %s devInst %lX", - guid_to_string(guid, guid_string), ULONG_CAST(dev_info_data->DevInst)); - return LIBUSB_ERROR_NO_MEM; - } - - return LIBUSB_SUCCESS; -} - -/* For libusb0 filter */ -static int get_interface_details_filter(struct libusb_context *ctx, HDEVINFO *dev_info, - DWORD _index, char *filter_path, char **dev_interface_path) -{ - const GUID *libusb0_guid = &GUID_DEVINTERFACE_LIBUSB0_FILTER; - SP_DEVICE_INTERFACE_DATA dev_interface_data; - PSP_DEVICE_INTERFACE_DETAIL_DATA_A dev_interface_details; - HKEY hkey_dev_interface; - DWORD size; - int err = LIBUSB_ERROR_OTHER; - - if (_index == 0) { - *dev_info = pSetupDiGetClassDevsA(libusb0_guid, NULL, NULL, DIGCF_PRESENT | DIGCF_DEVICEINTERFACE); - if (*dev_info == INVALID_HANDLE_VALUE) { - usbi_err(ctx, "could not obtain device info set: %s", windows_error_str(0)); - return LIBUSB_ERROR_OTHER; - } - } - - dev_interface_data.cbSize = sizeof(SP_DEVICE_INTERFACE_DATA); - if (!pSetupDiEnumDeviceInterfaces(*dev_info, NULL, libusb0_guid, _index, &dev_interface_data)) { - if (GetLastError() != ERROR_NO_MORE_ITEMS) { - usbi_err(ctx, "Could not obtain interface data for index %lu: %s", - ULONG_CAST(_index), windows_error_str(0)); - goto err_exit; - } - - pSetupDiDestroyDeviceInfoList(*dev_info); - *dev_info = INVALID_HANDLE_VALUE; - return LIBUSB_SUCCESS; - } - - // Read interface data (dummy + actual) to access the device path - if (!pSetupDiGetDeviceInterfaceDetailA(*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 %lu: %s", - ULONG_CAST(_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; - } - - dev_interface_details = malloc(size); - if (dev_interface_details == NULL) { - usbi_err(ctx, "could not allocate interface data for index %lu", ULONG_CAST(_index)); - err = LIBUSB_ERROR_NO_MEM; - goto err_exit; - } - - dev_interface_details->cbSize = sizeof(SP_DEVICE_INTERFACE_DETAIL_DATA_A); - if (!pSetupDiGetDeviceInterfaceDetailA(*dev_info, &dev_interface_data, dev_interface_details, size, NULL, NULL)) { - usbi_err(ctx, "could not access interface data (actual) for index %lu: %s", - ULONG_CAST(_index), windows_error_str(0)); - free(dev_interface_details); - goto err_exit; - } - - *dev_interface_path = normalize_path(dev_interface_details->DevicePath); - free(dev_interface_details); - - if (*dev_interface_path == NULL) { - usbi_err(ctx, "could not allocate interface path for index %lu", ULONG_CAST(_index)); - err = LIBUSB_ERROR_NO_MEM; - goto err_exit; - } - - // [trobinso] lookup the libusb0 symbolic index. - hkey_dev_interface = pSetupDiOpenDeviceInterfaceRegKey(*dev_info, &dev_interface_data, 0, KEY_READ); - if (hkey_dev_interface != INVALID_HANDLE_VALUE) { - DWORD libusb0_symboliclink_index = 0; - DWORD value_length = sizeof(DWORD); - LONG status; - - status = pRegQueryValueExA(hkey_dev_interface, "LUsb0", NULL, NULL, - (LPBYTE)&libusb0_symboliclink_index, &value_length); - if (status == ERROR_SUCCESS) { - if (libusb0_symboliclink_index < 256) { - // libusb0.sys is connected to this device instance. - // If the the device interface guid is {F9F3FF14-AE21-48A0-8A25-8011A7A931D9} then it's a filter. - sprintf(filter_path, "\\\\.\\libusb0-%04u", (unsigned int)libusb0_symboliclink_index); - usbi_dbg(ctx, "assigned libusb0 symbolic link %s", filter_path); - } else { - // libusb0.sys was connected to this device instance at one time; but not anymore. - } - } - pRegCloseKey(hkey_dev_interface); - } else { - usbi_warn(ctx, "could not open device interface registry key for index %lu: %s", - ULONG_CAST(_index), windows_error_str(0)); - // TODO: should this be an error? - } - - return LIBUSB_SUCCESS; - -err_exit: - pSetupDiDestroyDeviceInfoList(*dev_info); - *dev_info = INVALID_HANDLE_VALUE; - return err; -} - -/* - * Returns the first known ancestor of a device - */ -static struct libusb_device *get_ancestor(struct libusb_context *ctx, - DEVINST devinst, PDEVINST _parent_devinst) -{ - struct libusb_device *dev = NULL; - DEVINST parent_devinst; - - while (dev == NULL) { - if (CM_Get_Parent(&parent_devinst, devinst, 0) != CR_SUCCESS) - break; - devinst = parent_devinst; - dev = usbi_get_device_by_session_id(ctx, (unsigned long)devinst); - } - - if ((dev != NULL) && (_parent_devinst != NULL)) - *_parent_devinst = devinst; - - return dev; -} - -/* - * Determine which interface the given endpoint address belongs to - */ -static int get_interface_by_endpoint(struct libusb_config_descriptor *conf_desc, uint8_t ep) -{ - const struct libusb_interface *intf; - const struct libusb_interface_descriptor *intf_desc; - uint8_t i, k; - int j; - - for (i = 0; i < conf_desc->bNumInterfaces; i++) { - intf = &conf_desc->interface[i]; - for (j = 0; j < intf->num_altsetting; j++) { - intf_desc = &intf->altsetting[j]; - for (k = 0; k < intf_desc->bNumEndpoints; k++) { - if (intf_desc->endpoint[k].bEndpointAddress == ep) { - usbi_dbg(NULL, "found endpoint %02X on interface %d", intf_desc->bInterfaceNumber, i); - return intf_desc->bInterfaceNumber; - } - } - } - } - - usbi_dbg(NULL, "endpoint %02X not found on any interface", ep); - return LIBUSB_ERROR_NOT_FOUND; -} - -/* - * Open a device and associate the HANDLE with the context's I/O completion port - */ -static HANDLE windows_open(struct libusb_device_handle *dev_handle, const char *path, DWORD access) -{ - struct libusb_context *ctx = HANDLE_CTX(dev_handle); - struct windows_context_priv *priv = usbi_get_context_priv(ctx); - HANDLE handle; - - handle = CreateFileA(path, access, FILE_SHARE_READ | FILE_SHARE_WRITE, NULL, OPEN_EXISTING, FILE_FLAG_OVERLAPPED, NULL); - if (handle == INVALID_HANDLE_VALUE) - return handle; - - if (CreateIoCompletionPort(handle, priv->completion_port, (ULONG_PTR)dev_handle, 0) == NULL) { - usbi_err(ctx, "failed to associate handle to I/O completion port: %s", windows_error_str(0)); - CloseHandle(handle); - return INVALID_HANDLE_VALUE; - } - - return handle; -} - -/* - * Populate the endpoints addresses of the device_priv interface helper structs - */ -static int windows_assign_endpoints(struct libusb_device_handle *dev_handle, uint8_t iface, uint8_t altsetting) -{ - struct winusb_device_priv *priv = usbi_get_device_priv(dev_handle->dev); - struct libusb_config_descriptor *conf_desc; - const struct libusb_interface_descriptor *if_desc; - int i, r; - - r = libusb_get_active_config_descriptor(dev_handle->dev, &conf_desc); - if (r != LIBUSB_SUCCESS) { - usbi_warn(HANDLE_CTX(dev_handle), "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(HANDLE_CTX(dev_handle), "no endpoints found for interface %u", iface); - } else { - priv->usb_interface[iface].endpoint = malloc(if_desc->bNumEndpoints); - if (priv->usb_interface[iface].endpoint == NULL) { - libusb_free_config_descriptor(conf_desc); - 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(HANDLE_CTX(dev_handle), "(re)assigned endpoint %02X to interface %u", priv->usb_interface[iface].endpoint[i], iface); - } - } - libusb_free_config_descriptor(conf_desc); - - // Extra init may be required to configure endpoints - if (priv->apib->configure_endpoints) - r = priv->apib->configure_endpoints(SUB_API_NOTSET, dev_handle, iface); - - if (r == LIBUSB_SUCCESS) - priv->usb_interface[iface].current_altsetting = altsetting; - - return r; -} - -// Lookup for a match in the list of API driver names -// return -1 if not found, driver match number otherwise -static int get_sub_api(char *driver, int api) -{ - const char sep_str[2] = {LIST_SEPARATOR, 0}; - char *tok, *tmp_str; - size_t len = strlen(driver); - int i; - - if (len == 0) - return SUB_API_NOTSET; - - tmp_str = _strdup(driver); - if (tmp_str == NULL) - return SUB_API_NOTSET; - - tok = strtok(tmp_str, sep_str); - while (tok != NULL) { - for (i = 0; i < usb_api_backend[api].nb_driver_names; i++) { - if (_stricmp(tok, usb_api_backend[api].driver_name_list[i]) == 0) { - free(tmp_str); - return i; - } - } - tok = strtok(NULL, sep_str); - } - - free(tmp_str); - return SUB_API_NOTSET; -} - -/* - * auto-claiming and auto-release helper functions - */ -static int auto_claim(struct libusb_transfer *transfer, int *interface_number, int api_type) -{ - struct winusb_device_handle_priv *handle_priv = - get_winusb_device_handle_priv(transfer->dev_handle); - struct winusb_device_priv *priv = usbi_get_device_priv(transfer->dev_handle->dev); - int current_interface = *interface_number; - int r = LIBUSB_SUCCESS; - - switch (api_type) { - case USB_API_WINUSBX: - 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->id == api_type) - && (libusb_claim_interface(transfer->dev_handle, current_interface) == LIBUSB_SUCCESS)) { - usbi_dbg(TRANSFER_CTX(transfer), "auto-claimed interface %d for control request", current_interface); - if (handle_priv->autoclaim_count[current_interface] != 0) - usbi_err(TRANSFER_CTX(transfer), "program assertion failed - autoclaim_count was nonzero"); - handle_priv->autoclaim_count[current_interface]++; - break; - } - } - if (current_interface == USB_MAXINTERFACES) { - usbi_err(TRANSFER_CTX(transfer), "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 winusb_transfer_priv *transfer_priv = get_winusb_transfer_priv(itransfer); - struct libusb_transfer *transfer = USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer); - libusb_device_handle *dev_handle = transfer->dev_handle; - struct winusb_device_handle_priv *handle_priv = get_winusb_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(ITRANSFER_CTX(itransfer), "auto-released interface %d", transfer_priv->interface_number); - else - usbi_dbg(ITRANSFER_CTX(itransfer), "failed to auto-release interface %d (%s)", - transfer_priv->interface_number, libusb_error_name((enum libusb_error)r)); - } - } - usbi_mutex_unlock(&autoclaim_lock); -} - -/* - * init: libusb backend init function - */ -static int winusb_init(struct libusb_context *ctx) -{ - int i; - - // Load DLL imports - if (!init_dlls(ctx)) { - usbi_err(ctx, "could not resolve DLL functions"); - return LIBUSB_ERROR_OTHER; - } - - // Initialize the low level APIs (we don't care about errors at this stage) - for (i = 0; i < USB_API_MAX; i++) { - if (usb_api_backend[i].init && !usb_api_backend[i].init(ctx)) - usbi_warn(ctx, "error initializing %s backend", - usb_api_backend[i].designation); - } - - // We need a lock for proper auto-release - usbi_mutex_init(&autoclaim_lock); - - return LIBUSB_SUCCESS; -} - -/* -* exit: libusb backend deinitialization function -*/ -static void winusb_exit(struct libusb_context *ctx) -{ - int i; - - UNUSED(ctx); - - usbi_mutex_destroy(&autoclaim_lock); - - for (i = 0; i < USB_API_MAX; i++) { - if (usb_api_backend[i].exit) - usb_api_backend[i].exit(); - } - - exit_dlls(); -} - -/* - * fetch and cache all the config descriptors through I/O - */ -static void cache_config_descriptors(struct libusb_device *dev, HANDLE hub_handle) -{ - struct libusb_context *ctx = DEVICE_CTX(dev); - struct winusb_device_priv *priv = usbi_get_device_priv(dev); - DWORD size, ret_size; - uint8_t i, num_configurations; - - USB_CONFIGURATION_DESCRIPTOR_SHORT cd_buf_short; // dummy request - PUSB_DESCRIPTOR_REQUEST cd_buf_actual = NULL; // actual request - PUSB_CONFIGURATION_DESCRIPTOR cd_data; - - num_configurations = dev->device_descriptor.bNumConfigurations; - if (num_configurations == 0) - return; - - assert(sizeof(USB_DESCRIPTOR_REQUEST) == USB_DESCRIPTOR_REQUEST_SIZE); - - priv->config_descriptor = calloc(num_configurations, sizeof(PUSB_CONFIGURATION_DESCRIPTOR)); - if (priv->config_descriptor == NULL) { - usbi_err(ctx, "could not allocate configuration descriptor array for '%s'", priv->dev_id); - return; - } - - for (i = 0; i <= num_configurations; i++) { - safe_free(cd_buf_actual); - - if (i == num_configurations) - break; - - size = sizeof(cd_buf_short); - memset(&cd_buf_short.desc, 0, sizeof(cd_buf_short.desc)); - - cd_buf_short.req.ConnectionIndex = (ULONG)dev->port_number; - cd_buf_short.req.SetupPacket.bmRequest = LIBUSB_ENDPOINT_IN; - cd_buf_short.req.SetupPacket.bRequest = LIBUSB_REQUEST_GET_DESCRIPTOR; - cd_buf_short.req.SetupPacket.wValue = (LIBUSB_DT_CONFIG << 8) | i; - cd_buf_short.req.SetupPacket.wIndex = 0; - cd_buf_short.req.SetupPacket.wLength = (USHORT)sizeof(USB_CONFIGURATION_DESCRIPTOR); - - // Dummy call to get the required data size. Initial failures are reported as info rather - // than error as they can occur for non-penalizing situations, such as with some hubs. - // coverity[tainted_data_argument] - if (!DeviceIoControl(hub_handle, IOCTL_USB_GET_DESCRIPTOR_FROM_NODE_CONNECTION, &cd_buf_short, size, - &cd_buf_short, size, &ret_size, NULL)) { - usbi_info(ctx, "could not access configuration descriptor %u (dummy) for '%s': %s", i, priv->dev_id, windows_error_str(0)); - continue; - } - - if ((ret_size != size) || (cd_buf_short.desc.wTotalLength < sizeof(USB_CONFIGURATION_DESCRIPTOR))) { - usbi_info(ctx, "unexpected configuration descriptor %u size (dummy) for '%s'", i, priv->dev_id); - continue; - } - - size = sizeof(USB_DESCRIPTOR_REQUEST) + cd_buf_short.desc.wTotalLength; - cd_buf_actual = malloc(size); - if (cd_buf_actual == NULL) { - usbi_err(ctx, "could not allocate configuration descriptor %u buffer for '%s'", i, priv->dev_id); - continue; - } - - // Actual call - cd_buf_actual->ConnectionIndex = (ULONG)dev->port_number; - cd_buf_actual->SetupPacket.bmRequest = LIBUSB_ENDPOINT_IN; - cd_buf_actual->SetupPacket.bRequest = LIBUSB_REQUEST_GET_DESCRIPTOR; - cd_buf_actual->SetupPacket.wValue = (LIBUSB_DT_CONFIG << 8) | i; - cd_buf_actual->SetupPacket.wIndex = 0; - cd_buf_actual->SetupPacket.wLength = cd_buf_short.desc.wTotalLength; - - 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 %u (actual) for '%s': %s", i, priv->dev_id, windows_error_str(0)); - continue; - } - - cd_data = (PUSB_CONFIGURATION_DESCRIPTOR)((UCHAR *)cd_buf_actual + USB_DESCRIPTOR_REQUEST_SIZE); - - if ((size != ret_size) || (cd_data->wTotalLength != cd_buf_short.desc.wTotalLength)) { - usbi_err(ctx, "unexpected configuration descriptor %u size (actual) for '%s'", i, priv->dev_id); - continue; - } - - if (cd_data->bDescriptorType != LIBUSB_DT_CONFIG) { - usbi_err(ctx, "descriptor %u not a configuration descriptor for '%s'", i, priv->dev_id); - continue; - } - - usbi_dbg(ctx, "cached config descriptor %u (bConfigurationValue=%u, %u bytes)", - i, cd_data->bConfigurationValue, cd_data->wTotalLength); - - // Cache the descriptor - priv->config_descriptor[i] = cd_data; - cd_buf_actual = NULL; - } -} - -#define ROOT_HUB_FS_CONFIG_DESC_LENGTH 0x19 -#define ROOT_HUB_HS_CONFIG_DESC_LENGTH 0x19 -#define ROOT_HUB_SS_CONFIG_DESC_LENGTH 0x1f -#define CONFIG_DESC_WTOTAL_LENGTH_OFFSET 0x02 -#define CONFIG_DESC_EP_MAX_PACKET_OFFSET 0x16 -#define CONFIG_DESC_EP_BINTERVAL_OFFSET 0x18 - -static const uint8_t root_hub_config_descriptor_template[] = { - // Configuration Descriptor - LIBUSB_DT_CONFIG_SIZE, // bLength - LIBUSB_DT_CONFIG, // bDescriptorType - 0x00, 0x00, // wTotalLength (filled in) - 0x01, // bNumInterfaces - 0x01, // bConfigurationValue - 0x00, // iConfiguration - 0xc0, // bmAttributes (reserved + self-powered) - 0x00, // bMaxPower - // Interface Descriptor - LIBUSB_DT_INTERFACE_SIZE, // bLength - LIBUSB_DT_INTERFACE, // bDescriptorType - 0x00, // bInterfaceNumber - 0x00, // bAlternateSetting - 0x01, // bNumEndpoints - LIBUSB_CLASS_HUB, // bInterfaceClass - 0x00, // bInterfaceSubClass - 0x00, // bInterfaceProtocol - 0x00, // iInterface - // Endpoint Descriptor - LIBUSB_DT_ENDPOINT_SIZE, // bLength - LIBUSB_DT_ENDPOINT, // bDescriptorType - 0x81, // bEndpointAddress - 0x03, // bmAttributes (Interrupt) - 0x00, 0x00, // wMaxPacketSize (filled in) - 0x00, // bInterval (filled in) - // SuperSpeed Endpoint Companion Descriptor - LIBUSB_DT_SS_ENDPOINT_COMPANION_SIZE, // bLength - LIBUSB_DT_SS_ENDPOINT_COMPANION, // bDescriptorType - 0x00, // bMaxBurst - 0x00, // bmAttributes - 0x02, 0x00 // wBytesPerInterval -}; - -static int alloc_root_hub_config_desc(struct libusb_device *dev, ULONG num_ports, - uint8_t config_desc_length, uint8_t ep_interval) -{ - struct winusb_device_priv *priv = usbi_get_device_priv(dev); - uint8_t *ptr; - - priv->config_descriptor = malloc(sizeof(*priv->config_descriptor)); - if (priv->config_descriptor == NULL) - return LIBUSB_ERROR_NO_MEM; - - // Most config descriptors come from cache_config_descriptors() which obtains the - // descriptors from the hub using an allocated USB_DESCRIPTOR_REQUEST structure. - // To avoid an extra malloc + memcpy we just hold on to the USB_DESCRIPTOR_REQUEST - // structure we already have and back up the pointer in windows_device_priv_release() - // when freeing the descriptors. To keep a single execution path, we need to offset - // the pointer here by the same amount. - ptr = malloc(USB_DESCRIPTOR_REQUEST_SIZE + config_desc_length); - if (ptr == NULL) - return LIBUSB_ERROR_NO_MEM; - - ptr += USB_DESCRIPTOR_REQUEST_SIZE; - - memcpy(ptr, root_hub_config_descriptor_template, config_desc_length); - ptr[CONFIG_DESC_WTOTAL_LENGTH_OFFSET] = config_desc_length; - ptr[CONFIG_DESC_EP_MAX_PACKET_OFFSET] = (uint8_t)((num_ports + 7) / 8); - ptr[CONFIG_DESC_EP_BINTERVAL_OFFSET] = ep_interval; - - priv->config_descriptor[0] = (PUSB_CONFIGURATION_DESCRIPTOR)ptr; - priv->active_config = 1; - - return 0; -} - -static int init_root_hub(struct libusb_device *dev) -{ - struct libusb_context *ctx = DEVICE_CTX(dev); - struct winusb_device_priv *priv = usbi_get_device_priv(dev); - USB_NODE_CONNECTION_INFORMATION_EX conn_info; - USB_NODE_CONNECTION_INFORMATION_EX_V2 conn_info_v2; - USB_NODE_INFORMATION hub_info; - enum libusb_speed speed = LIBUSB_SPEED_UNKNOWN; - uint8_t config_desc_length; - uint8_t ep_interval; - HANDLE handle; - ULONG port_number, num_ports; - DWORD size; - int r; - - // Determining the speed of a root hub is painful. Microsoft does not directly report the speed - // capabilities of the root hub itself, only its ports and/or connected devices. Therefore we - // are forced to query each individual port of the root hub to try and infer the root hub's - // speed. Note that we have to query all ports because the presence of a device on that port - // changes if/how Windows returns any useful speed information. - handle = CreateFileA(priv->path, GENERIC_WRITE, FILE_SHARE_WRITE, NULL, OPEN_EXISTING, 0, NULL); - if (handle == INVALID_HANDLE_VALUE) { - usbi_err(ctx, "could not open root hub %s: %s", priv->path, windows_error_str(0)); - return LIBUSB_ERROR_ACCESS; - } - - if (!DeviceIoControl(handle, IOCTL_USB_GET_NODE_INFORMATION, NULL, 0, &hub_info, sizeof(hub_info), &size, NULL)) { - usbi_warn(ctx, "could not get root hub info for '%s': %s", priv->dev_id, windows_error_str(0)); - CloseHandle(handle); - return LIBUSB_ERROR_ACCESS; - } - - num_ports = hub_info.u.HubInformation.HubDescriptor.bNumberOfPorts; - usbi_dbg(ctx, "root hub '%s' reports %lu ports", priv->dev_id, ULONG_CAST(num_ports)); - - if (windows_version >= WINDOWS_8) { - // Windows 8 and later is better at reporting the speed capabilities of the root hub, - // but it is not perfect. If no device is attached to the port being queried, the - // returned information will only indicate whether that port supports USB 3.0 signalling. - // That is not enough information to distinguish between SuperSpeed and SuperSpeed Plus. - for (port_number = 1; port_number <= num_ports; port_number++) { - conn_info_v2.ConnectionIndex = port_number; - conn_info_v2.Length = sizeof(conn_info_v2); - conn_info_v2.SupportedUsbProtocols.Usb300 = 1; - if (!DeviceIoControl(handle, IOCTL_USB_GET_NODE_CONNECTION_INFORMATION_EX_V2, - &conn_info_v2, sizeof(conn_info_v2), &conn_info_v2, sizeof(conn_info_v2), &size, NULL)) { - usbi_warn(ctx, "could not get node connection information (V2) for root hub '%s' port %lu: %s", - priv->dev_id, ULONG_CAST(port_number), windows_error_str(0)); - break; - } - - if (conn_info_v2.Flags.DeviceIsSuperSpeedPlusCapableOrHigher) - speed = MAX(speed, LIBUSB_SPEED_SUPER_PLUS); - else if (conn_info_v2.Flags.DeviceIsSuperSpeedCapableOrHigher || conn_info_v2.SupportedUsbProtocols.Usb300) - speed = MAX(speed, LIBUSB_SPEED_SUPER); - else if (conn_info_v2.SupportedUsbProtocols.Usb200) - speed = MAX(speed, LIBUSB_SPEED_HIGH); - else - speed = MAX(speed, LIBUSB_SPEED_FULL); - } - - if (speed != LIBUSB_SPEED_UNKNOWN) - goto make_descriptors; - } - - // At this point the speed is still not known, most likely because we are executing on - // Windows 7 or earlier. The following hackery peeks into the root hub's Device ID and - // tries to extract speed information from it, based on observed naming conventions. - // If this does not work, we will query individual ports of the root hub. - if (strstr(priv->dev_id, "ROOT_HUB31") != NULL) - speed = LIBUSB_SPEED_SUPER_PLUS; - else if (strstr(priv->dev_id, "ROOT_HUB30") != NULL) - speed = LIBUSB_SPEED_SUPER; - else if (strstr(priv->dev_id, "ROOT_HUB20") != NULL) - speed = LIBUSB_SPEED_HIGH; - - if (speed != LIBUSB_SPEED_UNKNOWN) - goto make_descriptors; - - // Windows only reports speed information about a connected device. This means that a root - // hub with no connected devices or devices that are all operating at a speed less than the - // highest speed that the root hub supports will not give us the correct speed. - for (port_number = 1; port_number <= num_ports; port_number++) { - conn_info.ConnectionIndex = port_number; - if (!DeviceIoControl(handle, IOCTL_USB_GET_NODE_CONNECTION_INFORMATION_EX, &conn_info, sizeof(conn_info), - &conn_info, sizeof(conn_info), &size, NULL)) { - usbi_warn(ctx, "could not get node connection information for root hub '%s' port %lu: %s", - priv->dev_id, ULONG_CAST(port_number), windows_error_str(0)); - continue; - } - - if (conn_info.ConnectionStatus != DeviceConnected) - continue; - - if (conn_info.Speed == UsbHighSpeed) { - speed = LIBUSB_SPEED_HIGH; - break; - } - } - -make_descriptors: - CloseHandle(handle); - - dev->device_descriptor.bLength = LIBUSB_DT_DEVICE_SIZE; - dev->device_descriptor.bDescriptorType = LIBUSB_DT_DEVICE; - dev->device_descriptor.bDeviceClass = LIBUSB_CLASS_HUB; - if ((dev->device_descriptor.idVendor == 0) && (dev->device_descriptor.idProduct == 0)) { - dev->device_descriptor.idVendor = 0x1d6b; // Linux Foundation - dev->device_descriptor.idProduct = (uint16_t)speed; - } - dev->device_descriptor.bcdDevice = 0x0100; - dev->device_descriptor.bNumConfigurations = 1; - - switch (speed) { - case LIBUSB_SPEED_SUPER_PLUS: - dev->device_descriptor.bcdUSB = 0x0310; - config_desc_length = ROOT_HUB_SS_CONFIG_DESC_LENGTH; - ep_interval = 0x0c; // 256ms - break; - case LIBUSB_SPEED_SUPER: - dev->device_descriptor.bcdUSB = 0x0300; - config_desc_length = ROOT_HUB_SS_CONFIG_DESC_LENGTH; - ep_interval = 0x0c; // 256ms - break; - case LIBUSB_SPEED_HIGH: - dev->device_descriptor.bcdUSB = 0x0200; - config_desc_length = ROOT_HUB_HS_CONFIG_DESC_LENGTH; - ep_interval = 0x0c; // 256ms - break; - case LIBUSB_SPEED_LOW: // Not used, but keeps compiler happy - case LIBUSB_SPEED_UNKNOWN: - // This case means absolutely no information about this root hub was determined. - // There is not much choice than to be pessimistic and label this as a - // full-speed device. - speed = LIBUSB_SPEED_FULL; - // fallthrough - case LIBUSB_SPEED_FULL: - dev->device_descriptor.bcdUSB = 0x0110; - config_desc_length = ROOT_HUB_FS_CONFIG_DESC_LENGTH; - ep_interval = 0xff; // 255ms - break; - default: // Impossible, buts keeps compiler happy - usbi_err(ctx, "program assertion failed - unknown root hub speed"); - return LIBUSB_ERROR_INVALID_PARAM; - } - - if (speed >= LIBUSB_SPEED_SUPER) { - dev->device_descriptor.bDeviceProtocol = 0x03; // USB 3.0 Hub - dev->device_descriptor.bMaxPacketSize0 = 0x09; // 2^9 bytes - } else { - dev->device_descriptor.bMaxPacketSize0 = 0x40; // 64 bytes - } - - dev->speed = speed; - - r = alloc_root_hub_config_desc(dev, num_ports, config_desc_length, ep_interval); - if (r) - usbi_err(ctx, "could not allocate config descriptor for root hub '%s'", priv->dev_id); - - return r; -} - -/* - * Populate a libusb device structure - */ -static int init_device(struct libusb_device *dev, struct libusb_device *parent_dev, - uint8_t port_number, DEVINST devinst) -{ - struct libusb_context *ctx = NULL; - struct libusb_device *tmp_dev; - struct winusb_device_priv *priv, *parent_priv, *tmp_priv; - USB_NODE_CONNECTION_INFORMATION_EX conn_info; - USB_NODE_CONNECTION_INFORMATION_EX_V2 conn_info_v2; - HANDLE hub_handle; - DWORD size; - uint8_t bus_number, depth; - int r; - int ginfotimeout; - - priv = usbi_get_device_priv(dev); - - // If the device is already initialized, we can stop here - if (priv->initialized) - return LIBUSB_SUCCESS; - - if (parent_dev != NULL) { // Not a HCD root hub - ctx = DEVICE_CTX(dev); - parent_priv = usbi_get_device_priv(parent_dev); - if (parent_priv->apib->id != USB_API_HUB) { - usbi_warn(ctx, "parent for device '%s' is not a hub", priv->dev_id); - return LIBUSB_ERROR_NOT_FOUND; - } - - // Calculate depth and fetch bus number - bus_number = parent_dev->bus_number; - if (bus_number == 0) { - tmp_dev = get_ancestor(ctx, devinst, &devinst); - if (tmp_dev != parent_dev) { - usbi_err(ctx, "program assertion failed - first ancestor is not parent"); - return LIBUSB_ERROR_NOT_FOUND; - } - libusb_unref_device(tmp_dev); - - for (depth = 1; bus_number == 0; depth++) { - tmp_dev = get_ancestor(ctx, devinst, &devinst); - if (tmp_dev == NULL) { - usbi_warn(ctx, "ancestor for device '%s' not found at depth %u", priv->dev_id, depth); - return LIBUSB_ERROR_NO_DEVICE; - } - if (tmp_dev->bus_number != 0) { - bus_number = tmp_dev->bus_number; - tmp_priv = usbi_get_device_priv(tmp_dev); - depth += tmp_priv->depth; - } - libusb_unref_device(tmp_dev); - } - } else { - depth = parent_priv->depth + 1; - } - - if (bus_number == 0) { - usbi_err(ctx, "program assertion failed - bus number not found for '%s'", priv->dev_id); - return LIBUSB_ERROR_NOT_FOUND; - } - - dev->bus_number = bus_number; - dev->port_number = port_number; - dev->parent_dev = parent_dev; - priv->depth = depth; - - hub_handle = CreateFileA(parent_priv->path, GENERIC_WRITE, FILE_SHARE_WRITE, NULL, OPEN_EXISTING, 0, NULL); - if (hub_handle == INVALID_HANDLE_VALUE) { - usbi_warn(ctx, "could not open hub %s: %s", parent_priv->path, windows_error_str(0)); - return LIBUSB_ERROR_ACCESS; - } - - conn_info.ConnectionIndex = (ULONG)port_number; - // coverity[tainted_data_argument] - ginfotimeout = 20; - do { - if (!DeviceIoControl(hub_handle, IOCTL_USB_GET_NODE_CONNECTION_INFORMATION_EX, &conn_info, sizeof(conn_info), - &conn_info, sizeof(conn_info), &size, NULL)) { - usbi_warn(ctx, "could not get node connection information for device '%s': %s", - priv->dev_id, windows_error_str(0)); - CloseHandle(hub_handle); - return LIBUSB_ERROR_NO_DEVICE; - } - - if (conn_info.ConnectionStatus == NoDeviceConnected) { - usbi_err(ctx, "device '%s' is no longer connected!", priv->dev_id); - CloseHandle(hub_handle); - return LIBUSB_ERROR_NO_DEVICE; - } - - if ((conn_info.DeviceDescriptor.bLength != LIBUSB_DT_DEVICE_SIZE) - || (conn_info.DeviceDescriptor.bDescriptorType != LIBUSB_DT_DEVICE)) { - SleepEx(50, TRUE); - continue; - } - - static_assert(sizeof(dev->device_descriptor) == sizeof(conn_info.DeviceDescriptor), - "mismatch between libusb and OS device descriptor sizes"); - memcpy(&dev->device_descriptor, &conn_info.DeviceDescriptor, LIBUSB_DT_DEVICE_SIZE); - usbi_localize_device_descriptor(&dev->device_descriptor); - - priv->active_config = conn_info.CurrentConfigurationValue; - if (priv->active_config == 0) { - usbi_dbg(ctx, "0x%x:0x%x found %u configurations (not configured)", - dev->device_descriptor.idVendor, - dev->device_descriptor.idProduct, - dev->device_descriptor.bNumConfigurations); - SleepEx(50, TRUE); - } - } while (priv->active_config == 0 && --ginfotimeout >= 0); - - if ((conn_info.DeviceDescriptor.bLength != LIBUSB_DT_DEVICE_SIZE) - || (conn_info.DeviceDescriptor.bDescriptorType != LIBUSB_DT_DEVICE)) { - usbi_err(ctx, "device '%s' has invalid descriptor!", priv->dev_id); - CloseHandle(hub_handle); - return LIBUSB_ERROR_OTHER; - } - - if (priv->active_config == 0) { - usbi_info(ctx, "0x%x:0x%x found %u configurations but device isn't configured, " - "forcing current configuration to 1", - dev->device_descriptor.idVendor, - dev->device_descriptor.idProduct, - dev->device_descriptor.bNumConfigurations); - priv->active_config = 1; - } else { - usbi_dbg(ctx, "found %u configurations (current config: %u)", dev->device_descriptor.bNumConfigurations, priv->active_config); - } - - // Cache as many config descriptors as we can - cache_config_descriptors(dev, hub_handle); - - // In their great wisdom, Microsoft decided to BREAK the USB speed report between Windows 7 and Windows 8 - if (windows_version >= WINDOWS_8) { - conn_info_v2.ConnectionIndex = (ULONG)port_number; - conn_info_v2.Length = sizeof(USB_NODE_CONNECTION_INFORMATION_EX_V2); - conn_info_v2.SupportedUsbProtocols.Usb300 = 1; - if (!DeviceIoControl(hub_handle, IOCTL_USB_GET_NODE_CONNECTION_INFORMATION_EX_V2, - &conn_info_v2, sizeof(conn_info_v2), &conn_info_v2, sizeof(conn_info_v2), &size, NULL)) { - usbi_warn(ctx, "could not get node connection information (V2) for device '%s': %s", - priv->dev_id, windows_error_str(0)); - } else if (conn_info_v2.Flags.DeviceIsOperatingAtSuperSpeedPlusOrHigher) { - conn_info.Speed = UsbSuperSpeedPlus; - } else if (conn_info_v2.Flags.DeviceIsOperatingAtSuperSpeedOrHigher) { - conn_info.Speed = UsbSuperSpeed; - } - } - - CloseHandle(hub_handle); - - if (conn_info.DeviceAddress > UINT8_MAX) - usbi_err(ctx, "program assertion failed - device address overflow"); - - dev->device_address = (uint8_t)conn_info.DeviceAddress; - - switch (conn_info.Speed) { - case UsbLowSpeed: dev->speed = LIBUSB_SPEED_LOW; break; - case UsbFullSpeed: dev->speed = LIBUSB_SPEED_FULL; break; - case UsbHighSpeed: dev->speed = LIBUSB_SPEED_HIGH; break; - case UsbSuperSpeed: dev->speed = LIBUSB_SPEED_SUPER; break; - case UsbSuperSpeedPlus: dev->speed = LIBUSB_SPEED_SUPER_PLUS; break; - default: - usbi_warn(ctx, "unknown device speed %u", conn_info.Speed); - break; - } - } else { - r = init_root_hub(dev); - if (r) - return r; - } - - r = usbi_sanitize_device(dev); - if (r) - return r; - - priv->initialized = true; - - usbi_dbg(ctx, "(bus: %u, addr: %u, depth: %u, port: %u): '%s'", - dev->bus_number, dev->device_address, priv->depth, dev->port_number, priv->dev_id); - - return LIBUSB_SUCCESS; -} - -static bool get_dev_port_number(HDEVINFO dev_info, SP_DEVINFO_DATA *dev_info_data, DWORD *port_nr) -{ - char buffer[MAX_KEY_LENGTH]; - DWORD size; - - // First try SPDRP_LOCATION_INFORMATION, which returns a REG_SZ. The string *may* have a format - // similar to "Port_#0002.Hub_#000D", in which case we can extract the port number. However, we - // cannot extract the port if the returned string does not follow this format. - if (pSetupDiGetDeviceRegistryPropertyA(dev_info, dev_info_data, SPDRP_LOCATION_INFORMATION, - NULL, (PBYTE)buffer, sizeof(buffer), NULL)) { - // Check for the required format. - if (strncmp(buffer, "Port_#", 6) == 0) { - *port_nr = atoi(buffer + 6); - return true; - } - } - - // Next try SPDRP_LOCATION_PATHS, which returns a REG_MULTI_SZ (but we only examine the first - // string in it). Each path has a format similar to, - // "PCIROOT(B2)#PCI(0300)#PCI(0000)#USBROOT(0)#USB(1)#USB(2)#USBMI(3)", and the port number is - // the number within the last "USB(x)" token. - if (pSetupDiGetDeviceRegistryPropertyA(dev_info, dev_info_data, SPDRP_LOCATION_PATHS, - NULL, (PBYTE)buffer, sizeof(buffer), NULL)) { - // Find the last "#USB(x)" substring - for (char *token = strrchr(buffer, '#'); token != NULL; token = strrchr(buffer, '#')) { - if (strncmp(token, "#USB(", 5) == 0) { - *port_nr = atoi(token + 5); - return true; - } - // Shorten the string and try again. - *token = '\0'; - } - } - - // Lastly, try SPDRP_ADDRESS, which returns a REG_DWORD. The address *may* be the port number, - // which is true for the Microsoft driver but may not be true for other drivers. However, we - // have no other options here but to accept what it returns. - return pSetupDiGetDeviceRegistryPropertyA(dev_info, dev_info_data, SPDRP_ADDRESS, - NULL, (PBYTE)port_nr, sizeof(*port_nr), &size) && (size == sizeof(*port_nr)); -} - -static int enumerate_hcd_root_hub(struct libusb_context *ctx, const char *dev_id, - uint8_t bus_number, DEVINST devinst) -{ - struct libusb_device *dev; - struct winusb_device_priv *priv; - unsigned long session_id; - DEVINST child_devinst; - - if (CM_Get_Child(&child_devinst, devinst, 0) != CR_SUCCESS) { - usbi_warn(ctx, "could not get child devinst for '%s'", dev_id); - return LIBUSB_SUCCESS; - } - - session_id = (unsigned long)child_devinst; - dev = usbi_get_device_by_session_id(ctx, session_id); - if (dev == NULL) { - usbi_err(ctx, "program assertion failed - HCD '%s' child not found", dev_id); - return LIBUSB_SUCCESS; - } - - if (dev->bus_number == 0) { - // Only do this once - usbi_dbg(ctx, "assigning HCD '%s' bus number %u", dev_id, bus_number); - dev->bus_number = bus_number; - - if (sscanf(dev_id, "PCI\\VEN_%04hx&DEV_%04hx%*s", &dev->device_descriptor.idVendor, &dev->device_descriptor.idProduct) != 2) - usbi_warn(ctx, "could not infer VID/PID of HCD root hub from '%s'", dev_id); - - priv = usbi_get_device_priv(dev); - priv->root_hub = true; - } - - libusb_unref_device(dev); - return LIBUSB_SUCCESS; -} - -// Returns the api type, or 0 if not found/unsupported -static void get_api_type(HDEVINFO *dev_info, SP_DEVINFO_DATA *dev_info_data, - int *api, int *sub_api) -{ - // Precedence for filter drivers vs driver is in the order of this array - struct driver_lookup lookup[3] = { - {"\0\0", SPDRP_SERVICE, "driver"}, - {"\0\0", SPDRP_UPPERFILTERS, "upper filter driver"}, - {"\0\0", SPDRP_LOWERFILTERS, "lower filter driver"} - }; - DWORD size, reg_type; - unsigned k, l; - int i, j; - - // Check the service & filter names to know the API we should use - for (k = 0; k < 3; k++) { - if (pSetupDiGetDeviceRegistryPropertyA(*dev_info, dev_info_data, lookup[k].reg_prop, - ®_type, (PBYTE)lookup[k].list, MAX_KEY_LENGTH, &size)) { - // Turn the REG_SZ SPDRP_SERVICE into REG_MULTI_SZ - if (lookup[k].reg_prop == SPDRP_SERVICE) - // our buffers are MAX_KEY_LENGTH + 1 so we can overflow if needed - lookup[k].list[strlen(lookup[k].list) + 1] = 0; - - // MULTI_SZ is a pain to work with. Turn it into something much more manageable - // NB: none of the driver names we check against contain LIST_SEPARATOR, - // (currently ';'), so even if an unsupported one does, it's not an issue - for (l = 0; (lookup[k].list[l] != 0) || (lookup[k].list[l + 1] != 0); l++) { - if (lookup[k].list[l] == 0) - lookup[k].list[l] = LIST_SEPARATOR; - } - usbi_dbg(NULL, "%s(s): %s", lookup[k].designation, lookup[k].list); - } else { - if (GetLastError() != ERROR_INVALID_DATA) - usbi_dbg(NULL, "could not access %s: %s", lookup[k].designation, windows_error_str(0)); - lookup[k].list[0] = 0; - } - } - - for (i = 2; i < USB_API_MAX; i++) { - for (k = 0; k < 3; k++) { - j = get_sub_api(lookup[k].list, i); - if (j >= 0) { - usbi_dbg(NULL, "matched %s name against %s", lookup[k].designation, - (i != USB_API_WINUSBX) ? usb_api_backend[i].designation : usb_api_backend[i].driver_name_list[j]); - *api = i; - *sub_api = j; - return; - } - } - } -} - -static int set_composite_interface(struct libusb_context *ctx, struct libusb_device *dev, - char *dev_interface_path, char *device_id, int api, int sub_api) -{ - struct winusb_device_priv *priv = usbi_get_device_priv(dev); - int interface_number; - const char *mi_str; - - // Because MI_## are not necessarily in sequential order (some composite - // devices will have only MI_00 & MI_03 for instance), we retrieve the actual - // interface number from the path's MI value - mi_str = strstr(device_id, "MI_"); - if ((mi_str != NULL) && isdigit((unsigned char)mi_str[3]) && isdigit((unsigned char)mi_str[4])) { - interface_number = ((mi_str[3] - '0') * 10) + (mi_str[4] - '0'); - } else { - usbi_warn(ctx, "failure to read interface number for %s, using default value", device_id); - interface_number = 0; - } - - if (interface_number >= USB_MAXINTERFACES) { - usbi_warn(ctx, "interface %d too large - ignoring interface path %s", interface_number, dev_interface_path); - return LIBUSB_ERROR_ACCESS; - } - - if (priv->usb_interface[interface_number].path != NULL) { - if (api == USB_API_HID) { - // HID devices can have multiple collections (COL##) for each MI_## interface - usbi_dbg(ctx, "interface[%d] already set - ignoring HID collection: %s", - interface_number, device_id); - return LIBUSB_ERROR_ACCESS; - } - // In other cases, just use the latest data - safe_free(priv->usb_interface[interface_number].path); - } - - usbi_dbg(ctx, "interface[%d] = %s", interface_number, dev_interface_path); - priv->usb_interface[interface_number].path = dev_interface_path; - priv->usb_interface[interface_number].apib = &usb_api_backend[api]; - priv->usb_interface[interface_number].sub_api = sub_api; - if ((api == USB_API_HID) && (priv->hid == NULL)) { - priv->hid = calloc(1, sizeof(struct hid_device_priv)); - if (priv->hid == NULL) - return LIBUSB_ERROR_NO_MEM; - } - - return LIBUSB_SUCCESS; -} - -static int set_hid_interface(struct libusb_context *ctx, struct libusb_device *dev, - char *dev_interface_path) -{ - struct winusb_device_priv *priv = usbi_get_device_priv(dev); - uint8_t i; - - if (priv->hid == NULL) { - usbi_err(ctx, "program assertion failed - parent is not HID"); - return LIBUSB_ERROR_NO_DEVICE; - } else if (priv->hid->nb_interfaces == USB_MAXINTERFACES) { - usbi_err(ctx, "program assertion failed - max USB interfaces reached for HID device"); - return LIBUSB_ERROR_NO_DEVICE; - } - - for (i = 0; i < priv->hid->nb_interfaces; i++) { - if ((priv->usb_interface[i].path != NULL) && strcmp(priv->usb_interface[i].path, dev_interface_path) == 0) { - usbi_dbg(ctx, "interface[%u] already set to %s", i, dev_interface_path); - return LIBUSB_ERROR_ACCESS; - } - } - - priv->usb_interface[priv->hid->nb_interfaces].path = dev_interface_path; - priv->usb_interface[priv->hid->nb_interfaces].apib = &usb_api_backend[USB_API_HID]; - usbi_dbg(ctx, "interface[%u] = %s", priv->hid->nb_interfaces, dev_interface_path); - priv->hid->nb_interfaces++; - return LIBUSB_SUCCESS; -} - -/* - * get_device_list: libusb backend device enumeration function - */ -static int winusb_get_device_list(struct libusb_context *ctx, struct discovered_devs **_discdevs) -{ - struct discovered_devs *discdevs; - HDEVINFO *dev_info, dev_info_intf, dev_info_enum; - SP_DEVINFO_DATA dev_info_data; - DWORD _index = 0; - GUID hid_guid; - int r = LIBUSB_SUCCESS; - int api, sub_api; - unsigned int pass, i, j; - char enumerator[16]; - char dev_id[MAX_PATH_LENGTH]; - struct libusb_device *dev, *parent_dev; - struct winusb_device_priv *priv, *parent_priv; - char *dev_interface_path = NULL; - unsigned long session_id; - DWORD size, port_nr, reg_type, install_state; - HKEY key; - char guid_string[MAX_GUID_STRING_LENGTH]; - GUID *if_guid; - LONG s; -#define HUB_PASS 0 -#define DEV_PASS 1 -#define HCD_PASS 2 -#define GEN_PASS 3 -#define HID_PASS 4 -#define EXT_PASS 5 - // Keep a list of guids that will be enumerated -#define GUID_SIZE_STEP 8 - const GUID **guid_list, **new_guid_list; - unsigned int guid_size = GUID_SIZE_STEP; - unsigned int nb_guids; - // Keep a list of PnP enumerator strings that are found - const char *usb_enumerator[8] = { "USB" }; - unsigned int nb_usb_enumerators = 1; - unsigned int usb_enum_index = 0; - // Keep a list of newly allocated devs to unref -#define UNREF_SIZE_STEP 16 - libusb_device **unref_list, **new_unref_list; - unsigned int unref_size = UNREF_SIZE_STEP; - unsigned int unref_cur = 0; - - // PASS 1 : (re)enumerate HCDs (allows for HCD hotplug) - // PASS 2 : (re)enumerate HUBS - // PASS 3 : (re)enumerate generic USB devices (including driverless) - // and list additional USB device interface GUIDs to explore - // PASS 4 : (re)enumerate master USB devices that have a device interface - // PASS 5+: (re)enumerate device interfaced GUIDs (including HID) and - // set the device interfaces. - - // Init the GUID table - guid_list = malloc(guid_size * sizeof(void *)); - if (guid_list == NULL) { - usbi_err(ctx, "failed to alloc guid list"); - return LIBUSB_ERROR_NO_MEM; - } - - guid_list[HUB_PASS] = &GUID_DEVINTERFACE_USB_HUB; - guid_list[DEV_PASS] = &GUID_DEVINTERFACE_USB_DEVICE; - guid_list[HCD_PASS] = &GUID_DEVINTERFACE_USB_HOST_CONTROLLER; - guid_list[GEN_PASS] = NULL; - if (HidD_GetHidGuid != NULL) { - HidD_GetHidGuid(&hid_guid); - guid_list[HID_PASS] = &hid_guid; - } else { - guid_list[HID_PASS] = NULL; - } - nb_guids = EXT_PASS; - - unref_list = malloc(unref_size * sizeof(void *)); - if (unref_list == NULL) { - usbi_err(ctx, "failed to alloc unref list"); - free((void *)guid_list); - return LIBUSB_ERROR_NO_MEM; - } - - dev_info_intf = pSetupDiGetClassDevsA(NULL, NULL, NULL, DIGCF_ALLCLASSES | DIGCF_PRESENT | DIGCF_DEVICEINTERFACE); - if (dev_info_intf == INVALID_HANDLE_VALUE) { - usbi_err(ctx, "failed to obtain device info list: %s", windows_error_str(0)); - free(unref_list); - free((void *)guid_list); - return LIBUSB_ERROR_OTHER; - } - - for (pass = 0; ((pass < nb_guids) && (r == LIBUSB_SUCCESS)); pass++) { -//#define ENUM_DEBUG -#if defined(ENABLE_LOGGING) && defined(ENUM_DEBUG) - const char * const passname[] = {"HUB", "DEV", "HCD", "GEN", "HID", "EXT"}; - usbi_dbg(ctx, "#### PROCESSING %ss %s", passname[MIN(pass, EXT_PASS)], guid_to_string(guid_list[pass], guid_string)); -#endif - if ((pass == HID_PASS) && (guid_list[HID_PASS] == NULL)) - continue; - - dev_info = (pass != GEN_PASS) ? &dev_info_intf : &dev_info_enum; - - for (i = 0; ; i++) { - // safe loop: free up any (unprotected) dynamic resource - // NB: this is always executed before breaking the loop - safe_free(dev_interface_path); - priv = parent_priv = NULL; - dev = parent_dev = NULL; - - // Safe loop: end of loop conditions - if (r != LIBUSB_SUCCESS) - break; - - if ((pass == HCD_PASS) && (i == UINT8_MAX)) { - usbi_warn(ctx, "program assertion failed - found more than %u buses, skipping the rest", UINT8_MAX); - break; - } - - if (pass != GEN_PASS) { - // Except for GEN, all passes deal with device interfaces - r = get_interface_details(ctx, *dev_info, &dev_info_data, guid_list[pass], &_index, &dev_interface_path); - if ((r != LIBUSB_SUCCESS) || (dev_interface_path == NULL)) { - _index = 0; - break; - } - } else { - // Workaround for a Nec/Renesas USB 3.0 driver bug where root hubs are - // being listed under the "NUSB3" PnP Symbolic Name rather than "USB". - // The Intel USB 3.0 driver behaves similar, but uses "IUSB3" - // The Intel Alpine Ridge USB 3.1 driver uses "IARUSB3" - for (; usb_enum_index < nb_usb_enumerators; usb_enum_index++) { - if (get_devinfo_data(ctx, dev_info, &dev_info_data, usb_enumerator[usb_enum_index], i)) - break; - i = 0; - } - if (usb_enum_index == nb_usb_enumerators) - break; - } - - // Read the Device ID path - if (!pSetupDiGetDeviceInstanceIdA(*dev_info, &dev_info_data, dev_id, sizeof(dev_id), NULL)) { - usbi_warn(ctx, "could not read the device instance ID for devInst %lX, skipping", - ULONG_CAST(dev_info_data.DevInst)); - continue; - } - -#ifdef ENUM_DEBUG - usbi_dbg(ctx, "PRO: %s", dev_id); -#endif - - // Set API to use or get additional data from generic pass - api = USB_API_UNSUPPORTED; - sub_api = SUB_API_NOTSET; - switch (pass) { - case HCD_PASS: - break; - case HUB_PASS: - api = USB_API_HUB; - // Fetch the PnP enumerator class for this hub - // This will allow us to enumerate all classes during the GEN pass - if (!pSetupDiGetDeviceRegistryPropertyA(*dev_info, &dev_info_data, SPDRP_ENUMERATOR_NAME, - NULL, (PBYTE)enumerator, sizeof(enumerator), NULL)) { - usbi_err(ctx, "could not read enumerator string for device '%s': %s", dev_id, windows_error_str(0)); - LOOP_BREAK(LIBUSB_ERROR_OTHER); - } - for (j = 0; j < nb_usb_enumerators; j++) { - if (strcmp(usb_enumerator[j], enumerator) == 0) - break; - } - if (j == nb_usb_enumerators) { - usbi_dbg(ctx, "found new PnP enumerator string '%s'", enumerator); - if (nb_usb_enumerators < ARRAYSIZE(usb_enumerator)) { - usb_enumerator[nb_usb_enumerators] = _strdup(enumerator); - if (usb_enumerator[nb_usb_enumerators] != NULL) { - nb_usb_enumerators++; - } else { - usbi_err(ctx, "could not allocate enumerator string '%s'", enumerator); - LOOP_BREAK(LIBUSB_ERROR_NO_MEM); - } - } else { - usbi_warn(ctx, "too many enumerator strings, some devices may not be accessible"); - } - } - break; - case GEN_PASS: - // We use the GEN pass to detect driverless devices... - if (!pSetupDiGetDeviceRegistryPropertyA(*dev_info, &dev_info_data, SPDRP_DRIVER, - NULL, NULL, 0, NULL) && (GetLastError() != ERROR_INSUFFICIENT_BUFFER)) { - usbi_info(ctx, "The following device has no driver: '%s'", dev_id); - usbi_info(ctx, "libusb will not be able to access it"); - } - // ...and to add the additional device interface GUIDs - key = pSetupDiOpenDevRegKey(*dev_info, &dev_info_data, DICS_FLAG_GLOBAL, 0, DIREG_DEV, KEY_READ); - if (key == INVALID_HANDLE_VALUE) - break; - // Look for both DeviceInterfaceGUIDs *and* DeviceInterfaceGUID, in that order - // If multiple GUIDs just process the first and ignore the others - size = sizeof(guid_string); - s = pRegQueryValueExA(key, "DeviceInterfaceGUIDs", NULL, ®_type, - (LPBYTE)guid_string, &size); - if (s == ERROR_FILE_NOT_FOUND) - s = pRegQueryValueExA(key, "DeviceInterfaceGUID", NULL, ®_type, - (LPBYTE)guid_string, &size); - pRegCloseKey(key); - if (s == ERROR_FILE_NOT_FOUND) { - break; /* no DeviceInterfaceGUID registered */ - } else if (s != ERROR_SUCCESS && s != ERROR_MORE_DATA) { - usbi_warn(ctx, "unexpected error from pRegQueryValueExA for '%s'", dev_id); - break; - } - // https://docs.microsoft.com/en-us/windows/win32/api/winreg/nf-winreg-regqueryvalueexa#remarks - // - "string may not have been stored with the proper terminating null characters" - // - "Note that REG_MULTI_SZ strings could have two terminating null characters" - if ((reg_type == REG_SZ && size >= sizeof(guid_string) - sizeof(char)) - || (reg_type == REG_MULTI_SZ && size >= sizeof(guid_string) - 2 * sizeof(char))) { - if (nb_guids == guid_size) { - new_guid_list = realloc((void *)guid_list, (guid_size + GUID_SIZE_STEP) * sizeof(void *)); - if (new_guid_list == NULL) { - usbi_err(ctx, "failed to realloc guid list"); - LOOP_BREAK(LIBUSB_ERROR_NO_MEM); - } - guid_list = new_guid_list; - guid_size += GUID_SIZE_STEP; - } - if_guid = malloc(sizeof(*if_guid)); - if (if_guid == NULL) { - usbi_err(ctx, "failed to alloc if_guid"); - LOOP_BREAK(LIBUSB_ERROR_NO_MEM); - } - if (!string_to_guid(guid_string, if_guid)) { - usbi_warn(ctx, "device '%s' has malformed DeviceInterfaceGUID string '%s', skipping", dev_id, guid_string); - free(if_guid); - } else { - // Check if we've already seen this GUID - for (j = EXT_PASS; j < nb_guids; j++) { - if (memcmp(guid_list[j], if_guid, sizeof(*if_guid)) == 0) - break; - } - if (j == nb_guids) { - usbi_dbg(ctx, "extra GUID: %s", guid_string); - guid_list[nb_guids++] = if_guid; - } else { - // Duplicate, ignore - free(if_guid); - } - } - } else { - usbi_warn(ctx, "unexpected type/size of DeviceInterfaceGUID for '%s'", dev_id); - } - break; - case HID_PASS: - api = USB_API_HID; - break; - default: - // Get the API type (after checking that the driver installation is OK) - if ((!pSetupDiGetDeviceRegistryPropertyA(*dev_info, &dev_info_data, SPDRP_INSTALL_STATE, - NULL, (PBYTE)&install_state, sizeof(install_state), &size)) || (size != sizeof(install_state))) { - usbi_warn(ctx, "could not detect installation state of driver for '%s': %s", - dev_id, windows_error_str(0)); - } else if (install_state != 0) { - usbi_warn(ctx, "driver for device '%s' is reporting an issue (code: %lu) - skipping", - dev_id, ULONG_CAST(install_state)); - continue; - } - get_api_type(dev_info, &dev_info_data, &api, &sub_api); - break; - } - - // Find parent device (for the passes that need it) - if (pass >= GEN_PASS) { - parent_dev = get_ancestor(ctx, dev_info_data.DevInst, NULL); - if (parent_dev == NULL) { - // Root hubs will not have a parent - dev = usbi_get_device_by_session_id(ctx, (unsigned long)dev_info_data.DevInst); - if (dev != NULL) { - priv = usbi_get_device_priv(dev); - if (priv->root_hub) - goto track_unref; - libusb_unref_device(dev); - } - - usbi_dbg(ctx, "unlisted ancestor for '%s' (non USB HID, newly connected, etc.) - ignoring", dev_id); - continue; - } - - parent_priv = usbi_get_device_priv(parent_dev); - // virtual USB devices are also listed during GEN - don't process these yet - if ((pass == GEN_PASS) && (parent_priv->apib->id != USB_API_HUB)) { - libusb_unref_device(parent_dev); - continue; - } - } - - // Create new or match existing device, using the devInst as session id - if ((pass <= GEN_PASS) && (pass != HCD_PASS)) { // For subsequent passes, we'll lookup the parent - // These are the passes that create "new" devices - session_id = (unsigned long)dev_info_data.DevInst; - dev = usbi_get_device_by_session_id(ctx, session_id); - if (dev == NULL) { - alloc_device: - usbi_dbg(ctx, "allocating new device for session [%lX]", session_id); - dev = usbi_alloc_device(ctx, session_id); - if (dev == NULL) - LOOP_BREAK(LIBUSB_ERROR_NO_MEM); - - priv = winusb_device_priv_init(dev); - priv->dev_id = _strdup(dev_id); - priv->class_guid = dev_info_data.ClassGuid; - if (priv->dev_id == NULL) { - libusb_unref_device(dev); - LOOP_BREAK(LIBUSB_ERROR_NO_MEM); - } - } else { - usbi_dbg(ctx, "found existing device for session [%lX]", session_id); - - priv = usbi_get_device_priv(dev); - if (strcmp(priv->dev_id, dev_id) != 0) { - usbi_dbg(ctx, "device instance ID for session [%lX] changed", session_id); - usbi_disconnect_device(dev); - libusb_unref_device(dev); - goto alloc_device; - } - if (!IsEqualGUID(&priv->class_guid, &dev_info_data.ClassGuid)) { - usbi_dbg(ctx, "device class GUID for session [%lX] changed", session_id); - usbi_disconnect_device(dev); - libusb_unref_device(dev); - goto alloc_device; - } - } - - track_unref: - // Keep track of devices that need unref - if (unref_cur == unref_size) { - new_unref_list = realloc(unref_list, (unref_size + UNREF_SIZE_STEP) * sizeof(void *)); - if (new_unref_list == NULL) { - usbi_err(ctx, "could not realloc list for unref - aborting"); - LOOP_BREAK(LIBUSB_ERROR_NO_MEM); - } - unref_list = new_unref_list; - unref_size += UNREF_SIZE_STEP; - } - unref_list[unref_cur++] = dev; - } - - // Setup device - switch (pass) { - case HUB_PASS: - case DEV_PASS: - // If the device has already been setup, don't do it again - if (priv->path != NULL) - break; - // Take care of API initialization - priv->path = dev_interface_path; - dev_interface_path = NULL; - priv->apib = &usb_api_backend[api]; - priv->sub_api = sub_api; - switch (api) { - case USB_API_COMPOSITE: - case USB_API_HUB: - break; - case USB_API_HID: - priv->hid = calloc(1, sizeof(struct hid_device_priv)); - if (priv->hid == NULL) - LOOP_BREAK(LIBUSB_ERROR_NO_MEM); - break; - default: - // For other devices, the first interface is the same as the device - priv->usb_interface[0].path = _strdup(priv->path); - if (priv->usb_interface[0].path == NULL) - LOOP_BREAK(LIBUSB_ERROR_NO_MEM); - // The following is needed if we want API calls to work for both simple - // and composite devices. - for (j = 0; j < USB_MAXINTERFACES; j++) - priv->usb_interface[j].apib = &usb_api_backend[api]; - break; - } - break; - case HCD_PASS: - r = enumerate_hcd_root_hub(ctx, dev_id, (uint8_t)(i + 1), dev_info_data.DevInst); - break; - case GEN_PASS: - port_nr = 0; - if (!get_dev_port_number(*dev_info, &dev_info_data, &port_nr)) - usbi_warn(ctx, "could not retrieve port number for device '%s': %s", dev_id, windows_error_str(0)); - r = init_device(dev, parent_dev, (uint8_t)port_nr, dev_info_data.DevInst); - if (r == LIBUSB_SUCCESS) { - // Append device to the list of discovered devices - discdevs = discovered_devs_append(*_discdevs, dev); - if (!discdevs) - LOOP_BREAK(LIBUSB_ERROR_NO_MEM); - - *_discdevs = discdevs; - } else { - // Failed to initialize a single device doesn't stop us from enumerating all other devices, - // but we skip it (don't add to list of discovered devices) - usbi_warn(ctx, "failed to initialize device '%s'", priv->dev_id); - r = LIBUSB_SUCCESS; - } - break; - default: // HID_PASS and later - if (parent_priv->apib->id == USB_API_HID || parent_priv->apib->id == USB_API_COMPOSITE) { - if (parent_priv->apib->id == USB_API_HID) { - usbi_dbg(ctx, "setting HID interface for [%lX]:", parent_dev->session_data); - r = set_hid_interface(ctx, parent_dev, dev_interface_path); - } else { - usbi_dbg(ctx, "setting composite interface for [%lX]:", parent_dev->session_data); - r = set_composite_interface(ctx, parent_dev, dev_interface_path, dev_id, api, sub_api); - } - switch (r) { - case LIBUSB_SUCCESS: - dev_interface_path = NULL; - break; - case LIBUSB_ERROR_ACCESS: - // interface has already been set => make sure dev_interface_path is freed then - r = LIBUSB_SUCCESS; - break; - default: - LOOP_BREAK(r); - break; - } - } - libusb_unref_device(parent_dev); - break; - } - } - } - - pSetupDiDestroyDeviceInfoList(dev_info_intf); - - // Free any additional GUIDs - for (pass = EXT_PASS; pass < nb_guids; pass++) - free((void *)guid_list[pass]); - free((void *)guid_list); - - // Free any PnP enumerator strings - for (i = 1; i < nb_usb_enumerators; i++) - free((void *)usb_enumerator[i]); - - // Unref newly allocated devs - for (i = 0; i < unref_cur; i++) - libusb_unref_device(unref_list[i]); - free(unref_list); - - return r; -} - -static int winusb_get_config_descriptor(struct libusb_device *dev, uint8_t config_index, void *buffer, size_t len) -{ - struct winusb_device_priv *priv = usbi_get_device_priv(dev); - PUSB_CONFIGURATION_DESCRIPTOR config_header; - - if ((priv->config_descriptor == NULL) || (priv->config_descriptor[config_index] == NULL)) - return LIBUSB_ERROR_NOT_FOUND; - - config_header = priv->config_descriptor[config_index]; - - len = MIN(len, config_header->wTotalLength); - memcpy(buffer, config_header, len); - return (int)len; -} - -static int winusb_get_config_descriptor_by_value(struct libusb_device *dev, uint8_t bConfigurationValue, - void **buffer) -{ - struct winusb_device_priv *priv = usbi_get_device_priv(dev); - PUSB_CONFIGURATION_DESCRIPTOR config_header; - uint8_t index; - - if (priv->config_descriptor == NULL) - return LIBUSB_ERROR_NOT_FOUND; - - for (index = 0; index < dev->device_descriptor.bNumConfigurations; index++) { - config_header = priv->config_descriptor[index]; - if (config_header == NULL) - continue; - if (config_header->bConfigurationValue == bConfigurationValue) { - *buffer = config_header; - return (int)config_header->wTotalLength; - } - } - - return LIBUSB_ERROR_NOT_FOUND; -} - -/* - * return the cached copy of the active config descriptor - */ -static int winusb_get_active_config_descriptor(struct libusb_device *dev, void *buffer, size_t len) -{ - struct winusb_device_priv *priv = usbi_get_device_priv(dev); - void *config_desc; - int r; - - if (priv->active_config == 0) - return LIBUSB_ERROR_NOT_FOUND; - - r = winusb_get_config_descriptor_by_value(dev, priv->active_config, &config_desc); - if (r < 0) - return r; - - len = MIN(len, (size_t)r); - memcpy(buffer, config_desc, len); - return (int)len; -} - -static int winusb_open(struct libusb_device_handle *dev_handle) -{ - struct winusb_device_priv *priv = usbi_get_device_priv(dev_handle->dev); - - CHECK_SUPPORTED_API(priv->apib, open); - - return priv->apib->open(SUB_API_NOTSET, dev_handle); -} - -static void winusb_close(struct libusb_device_handle *dev_handle) -{ - struct winusb_device_priv *priv = usbi_get_device_priv(dev_handle->dev); - - if (priv->apib->close) - priv->apib->close(SUB_API_NOTSET, dev_handle); -} - -static int winusb_get_configuration(struct libusb_device_handle *dev_handle, uint8_t *config) -{ - struct winusb_device_priv *priv = usbi_get_device_priv(dev_handle->dev); - - *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 winusb_set_configuration(struct libusb_device_handle *dev_handle, uint8_t config) -{ - struct winusb_device_priv *priv = usbi_get_device_priv(dev_handle->dev); - int r = LIBUSB_SUCCESS; - - r = libusb_control_transfer(dev_handle, LIBUSB_ENDPOINT_OUT | - LIBUSB_REQUEST_TYPE_STANDARD | LIBUSB_RECIPIENT_DEVICE, - LIBUSB_REQUEST_SET_CONFIGURATION, config, - 0, NULL, 0, 1000); - - if (r == LIBUSB_SUCCESS) - priv->active_config = config; - - return r; -} - -static int winusb_claim_interface(struct libusb_device_handle *dev_handle, uint8_t iface) -{ - struct winusb_device_priv *priv = usbi_get_device_priv(dev_handle->dev); - int r; - - CHECK_SUPPORTED_API(priv->apib, claim_interface); - - safe_free(priv->usb_interface[iface].endpoint); - priv->usb_interface[iface].nb_endpoints = 0; - - r = priv->apib->claim_interface(SUB_API_NOTSET, dev_handle, iface); - - if (r == LIBUSB_SUCCESS) - r = windows_assign_endpoints(dev_handle, iface, 0); - - return r; -} - -static int winusb_set_interface_altsetting(struct libusb_device_handle *dev_handle, uint8_t iface, uint8_t altsetting) -{ - struct winusb_device_priv *priv = usbi_get_device_priv(dev_handle->dev); - int r; - - CHECK_SUPPORTED_API(priv->apib, set_interface_altsetting); - - safe_free(priv->usb_interface[iface].endpoint); - priv->usb_interface[iface].nb_endpoints = 0; - - r = priv->apib->set_interface_altsetting(SUB_API_NOTSET, dev_handle, iface, altsetting); - - if (r == LIBUSB_SUCCESS) - r = windows_assign_endpoints(dev_handle, iface, altsetting); - - return r; -} - -static int winusb_release_interface(struct libusb_device_handle *dev_handle, uint8_t iface) -{ - struct winusb_device_priv *priv = usbi_get_device_priv(dev_handle->dev); - - CHECK_SUPPORTED_API(priv->apib, release_interface); - - return priv->apib->release_interface(SUB_API_NOTSET, dev_handle, iface); -} - -static int winusb_clear_halt(struct libusb_device_handle *dev_handle, unsigned char endpoint) -{ - struct winusb_device_priv *priv = usbi_get_device_priv(dev_handle->dev); - - CHECK_SUPPORTED_API(priv->apib, clear_halt); - - return priv->apib->clear_halt(SUB_API_NOTSET, dev_handle, endpoint); -} - -static int winusb_reset_device(struct libusb_device_handle *dev_handle) -{ - struct winusb_device_priv *priv = usbi_get_device_priv(dev_handle->dev); - - CHECK_SUPPORTED_API(priv->apib, reset_device); - - return priv->apib->reset_device(SUB_API_NOTSET, dev_handle); -} - -static void winusb_destroy_device(struct libusb_device *dev) -{ - winusb_device_priv_release(dev); -} - -static void winusb_clear_transfer_priv(struct usbi_transfer *itransfer) -{ - struct winusb_transfer_priv *transfer_priv = get_winusb_transfer_priv(itransfer); - struct libusb_transfer *transfer = USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer); - struct winusb_device_priv *priv = usbi_get_device_priv(transfer->dev_handle->dev); - int sub_api = priv->sub_api; - - safe_free(transfer_priv->hid_buffer); - - if (transfer->type == LIBUSB_TRANSFER_TYPE_ISOCHRONOUS && sub_api == SUB_API_WINUSB) { - if (transfer_priv->isoch_buffer_handle != NULL) { - if (WinUSBX[sub_api].UnregisterIsochBuffer(transfer_priv->isoch_buffer_handle)) { - transfer_priv->isoch_buffer_handle = NULL; - } else { - usbi_warn(TRANSFER_CTX(transfer), "failed to unregister WinUSB isoch buffer: %s", windows_error_str(0)); - } - } - } - - safe_free(transfer_priv->iso_context); - - // When auto claim is in use, attempt to release the auto-claimed interface - auto_release(itransfer); -} - -static int winusb_submit_transfer(struct usbi_transfer *itransfer) -{ - struct libusb_transfer *transfer = USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer); - struct winusb_device_priv *priv = usbi_get_device_priv(transfer->dev_handle->dev); - int (*transfer_fn)(int, struct usbi_transfer *); - - switch (transfer->type) { - case LIBUSB_TRANSFER_TYPE_CONTROL: - transfer_fn = priv->apib->submit_control_transfer; - break; - case LIBUSB_TRANSFER_TYPE_BULK: - case LIBUSB_TRANSFER_TYPE_INTERRUPT: - transfer_fn = priv->apib->submit_bulk_transfer; - break; - case LIBUSB_TRANSFER_TYPE_ISOCHRONOUS: - transfer_fn = priv->apib->submit_iso_transfer; - break; - default: - // Should not get here since windows_submit_transfer() validates - // the transfer->type field - usbi_err(TRANSFER_CTX(transfer), "unknown endpoint type %d", transfer->type); - return LIBUSB_ERROR_INVALID_PARAM; - } - - if (transfer_fn == NULL) { - usbi_warn(TRANSFER_CTX(transfer), - "unsupported transfer type %d (unrecognized device driver)", - transfer->type); - return LIBUSB_ERROR_NOT_SUPPORTED; - } - - return transfer_fn(SUB_API_NOTSET, itransfer); -} - -static int winusb_cancel_transfer(struct usbi_transfer *itransfer) -{ - struct libusb_transfer *transfer = USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer); - struct winusb_device_priv *priv = usbi_get_device_priv(transfer->dev_handle->dev); - - CHECK_SUPPORTED_API(priv->apib, cancel_transfer); - - return priv->apib->cancel_transfer(SUB_API_NOTSET, itransfer); -} - -static enum libusb_transfer_status winusb_copy_transfer_data(struct usbi_transfer *itransfer, DWORD length) -{ - struct libusb_transfer *transfer = USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer); - struct winusb_device_priv *priv = usbi_get_device_priv(transfer->dev_handle->dev); - - if (priv->apib->copy_transfer_data == NULL) { - usbi_err(TRANSFER_CTX(transfer), "program assertion failed - no function to copy transfer data"); - return LIBUSB_TRANSFER_ERROR; - } - - return priv->apib->copy_transfer_data(SUB_API_NOTSET, itransfer, length); -} - -// NB: MSVC6 does not support named initializers. -const struct windows_backend winusb_backend = { - winusb_init, - winusb_exit, - winusb_get_device_list, - winusb_open, - winusb_close, - winusb_get_active_config_descriptor, - winusb_get_config_descriptor, - winusb_get_config_descriptor_by_value, - winusb_get_configuration, - winusb_set_configuration, - winusb_claim_interface, - winusb_release_interface, - winusb_set_interface_altsetting, - winusb_clear_halt, - winusb_reset_device, - winusb_destroy_device, - winusb_submit_transfer, - winusb_cancel_transfer, - winusb_clear_transfer_priv, - winusb_copy_transfer_data, -}; - -/* - * USB API backends - */ - -static const char * const composite_driver_names[] = {"USBCCGP"}; -static const char * const winusbx_driver_names[] = {"libusbK", "libusb0", "WinUSB"}; -static const char * const hid_driver_names[] = {"HIDUSB", "MOUHID", "KBDHID"}; -const struct windows_usb_api_backend usb_api_backend[USB_API_MAX] = { - { - USB_API_UNSUPPORTED, - "Unsupported API", - NULL, /* driver_name_list */ - 0, /* nb_driver_names */ - NULL, /* init */ - NULL, /* exit */ - NULL, /* open */ - NULL, /* close */ - NULL, /* configure_endpoints */ - NULL, /* claim_interface */ - NULL, /* set_interface_altsetting */ - NULL, /* release_interface */ - NULL, /* clear_halt */ - NULL, /* reset_device */ - NULL, /* submit_bulk_transfer */ - NULL, /* submit_iso_transfer */ - NULL, /* submit_control_transfer */ - NULL, /* cancel_transfer */ - NULL, /* copy_transfer_data */ - }, - { - USB_API_HUB, - "HUB API", - NULL, /* driver_name_list */ - 0, /* nb_driver_names */ - NULL, /* init */ - NULL, /* exit */ - NULL, /* open */ - NULL, /* close */ - NULL, /* configure_endpoints */ - NULL, /* claim_interface */ - NULL, /* set_interface_altsetting */ - NULL, /* release_interface */ - NULL, /* clear_halt */ - NULL, /* reset_device */ - NULL, /* submit_bulk_transfer */ - NULL, /* submit_iso_transfer */ - NULL, /* submit_control_transfer */ - NULL, /* cancel_transfer */ - NULL, /* copy_transfer_data */ - }, - { - USB_API_COMPOSITE, - "Composite API", - composite_driver_names, - ARRAYSIZE(composite_driver_names), - NULL, /* init */ - NULL, /* exit */ - composite_open, - composite_close, - NULL, /* configure_endpoints */ - 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_cancel_transfer, - composite_copy_transfer_data, - }, - { - USB_API_WINUSBX, - "WinUSB-like APIs", - winusbx_driver_names, - ARRAYSIZE(winusbx_driver_names), - winusbx_init, - winusbx_exit, - winusbx_open, - winusbx_close, - winusbx_configure_endpoints, - winusbx_claim_interface, - winusbx_set_interface_altsetting, - winusbx_release_interface, - winusbx_clear_halt, - winusbx_reset_device, - winusbx_submit_bulk_transfer, - winusbx_submit_iso_transfer, - winusbx_submit_control_transfer, - winusbx_cancel_transfer, - winusbx_copy_transfer_data, - }, - { - USB_API_HID, - "HID API", - hid_driver_names, - ARRAYSIZE(hid_driver_names), - hid_init, - hid_exit, - hid_open, - hid_close, - NULL, /* configure_endpoints */ - hid_claim_interface, - hid_set_interface_altsetting, - hid_release_interface, - hid_clear_halt, - hid_reset_device, - hid_submit_bulk_transfer, - NULL, /* submit_iso_transfer */ - hid_submit_control_transfer, - NULL, /* cancel_transfer */ - hid_copy_transfer_data, - }, -}; - - -/* - * WinUSB-like (WinUSB, libusb0/libusbK through libusbk DLL) API functions - */ -#define WinUSB_Set(h, fn, required) \ - do { \ - WinUSBX[SUB_API_WINUSB].fn = (WinUsb_##fn##_t)GetProcAddress(h, "WinUsb_" #fn); \ - if (required && (WinUSBX[SUB_API_WINUSB].fn == NULL)) { \ - usbi_err(ctx, "GetProcAddress() failed for WinUsb_%s", #fn); \ - goto cleanup_winusb; \ - } \ - } while (0) - -#define libusbK_Set(sub_api, fn, required) \ - do { \ - pLibK_GetProcAddress((PVOID *)&WinUSBX[sub_api].fn, sub_api, KUSB_FNID_##fn); \ - if (required && (WinUSBX[sub_api].fn == NULL)) { \ - usbi_err(ctx, "LibK_GetProcAddress() failed for LibK_%s", #fn); \ - goto cleanup_libusbk; \ - } \ - } while (0) - -static bool winusbx_init(struct libusb_context *ctx) -{ - HMODULE hWinUSB, hlibusbK; - - hWinUSB = load_system_library(ctx, "WinUSB"); - if (hWinUSB != NULL) { - WinUSB_Set(hWinUSB, AbortPipe, true); - WinUSB_Set(hWinUSB, ControlTransfer, true); - WinUSB_Set(hWinUSB, FlushPipe, true); - WinUSB_Set(hWinUSB, Free, true); - WinUSB_Set(hWinUSB, GetAssociatedInterface, true); - WinUSB_Set(hWinUSB, Initialize, true); - WinUSB_Set(hWinUSB, ReadPipe, true); - WinUSB_Set(hWinUSB, ResetPipe, true); - WinUSB_Set(hWinUSB, SetCurrentAlternateSetting, true); - WinUSB_Set(hWinUSB, SetPipePolicy, true); - WinUSB_Set(hWinUSB, WritePipe, true); - - // Check for isochronous transfers support (available starting with Windows 8.1) - WinUSB_Set(hWinUSB, ReadIsochPipeAsap, false); - if (WinUSBX[SUB_API_WINUSB].ReadIsochPipeAsap != NULL) { - WinUSB_Set(hWinUSB, QueryPipeEx, true); - WinUSB_Set(hWinUSB, RegisterIsochBuffer, true); - WinUSB_Set(hWinUSB, UnregisterIsochBuffer, true); - WinUSB_Set(hWinUSB, WriteIsochPipeAsap, true); - } - - WinUSBX[SUB_API_WINUSB].hDll = hWinUSB; - - usbi_info(ctx, "WinUSB DLL available (%s isoch support)", - (WinUSBX[SUB_API_WINUSB].ReadIsochPipeAsap != NULL) ? "with" : "without"); - -cleanup_winusb: - if (WinUSBX[SUB_API_WINUSB].hDll == NULL) { - usbi_err(ctx, "failed to initialize WinUSB"); - memset(&WinUSBX[SUB_API_WINUSB], 0, sizeof(WinUSBX[SUB_API_WINUSB])); - FreeLibrary(hWinUSB); - hWinUSB = NULL; - } - } else { - usbi_info(ctx, "WinUSB DLL is not available"); - } - - hlibusbK = load_system_library(ctx, "libusbK"); - if (hlibusbK != NULL) { - LibK_GetVersion_t pLibK_GetVersion; - LibK_GetProcAddress_t pLibK_GetProcAddress; - int sub_api = 0; - - pLibK_GetVersion = (LibK_GetVersion_t)GetProcAddress(hlibusbK, "LibK_GetVersion"); - if (pLibK_GetVersion != NULL) { - KLIB_VERSION LibK_Version; - - pLibK_GetVersion(&LibK_Version); - usbi_dbg(ctx, "libusbK DLL found, version: %d.%d.%d.%d", LibK_Version.Major, LibK_Version.Minor, - LibK_Version.Micro, LibK_Version.Nano); - } else { - usbi_dbg(ctx, "libusbK DLL found, version unknown"); - } - - pLibK_GetProcAddress = (LibK_GetProcAddress_t)GetProcAddress(hlibusbK, "LibK_GetProcAddress"); - if (pLibK_GetProcAddress == NULL) { - usbi_err(ctx, "LibK_GetProcAddress() not found in libusbK DLL"); - goto cleanup_libusbk; - } - - // NB: The below for loop works because the sub_api value for WinUSB - // is a higher value than that of libusbK and libusb0 - for (; sub_api < SUB_API_WINUSB; sub_api++) { - libusbK_Set(sub_api, AbortPipe, true); - libusbK_Set(sub_api, ControlTransfer, true); - libusbK_Set(sub_api, FlushPipe, true); - libusbK_Set(sub_api, Free, true); - libusbK_Set(sub_api, GetAssociatedInterface, true); - libusbK_Set(sub_api, Initialize, true); - libusbK_Set(sub_api, ReadPipe, true); - libusbK_Set(sub_api, ResetPipe, true); - libusbK_Set(sub_api, SetCurrentAlternateSetting, true); - libusbK_Set(sub_api, SetPipePolicy, true); - libusbK_Set(sub_api, WritePipe, true); - - // Optional isochronous support - libusbK_Set(sub_api, IsoReadPipe, false); - if (WinUSBX[sub_api].IsoReadPipe != NULL) - libusbK_Set(sub_api, IsoWritePipe, true); - - // Optional device reset support - libusbK_Set(sub_api, ResetDevice, false); - - WinUSBX[sub_api].hDll = hlibusbK; - } - -cleanup_libusbk: - if (sub_api < SUB_API_WINUSB) { - usbi_err(ctx, "failed to initialize libusbK"); - while (sub_api >= 0) { - memset(&WinUSBX[sub_api], 0, sizeof(WinUSBX[sub_api])); - sub_api--; - } - FreeLibrary(hlibusbK); - hlibusbK = NULL; - } - } else { - usbi_info(ctx, "libusbK DLL is not available"); - } - - if ((hWinUSB == NULL) && (hlibusbK == NULL)) { - usbi_warn(ctx, "neither WinUSB nor libusbK DLLs were found, " - "you will not be able to access devices outside of enumeration"); - return false; - } - - return true; -} - -static void winusbx_exit(void) -{ - bool loaded = false; - HMODULE hDll; - - hDll = WinUSBX[SUB_API_LIBUSBK].hDll; - if (hDll != NULL) { - FreeLibrary(hDll); - loaded = true; - } - - hDll = WinUSBX[SUB_API_WINUSB].hDll; - if (hDll != NULL) { - FreeLibrary(hDll); - loaded = true; - } - - // Reset the WinUSBX API structures if something was loaded - if (loaded) - memset(&WinUSBX, 0, sizeof(WinUSBX)); -} - -// 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 winusbx_open(int sub_api, struct libusb_device_handle *dev_handle) -{ - struct winusb_device_priv *priv = usbi_get_device_priv(dev_handle->dev); - struct winusb_device_handle_priv *handle_priv = get_winusb_device_handle_priv(dev_handle); - HANDLE file_handle; - int i; - - CHECK_WINUSBX_AVAILABLE(sub_api); - - // WinUSB requires a separate 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_WINUSBX)) { - file_handle = windows_open(dev_handle, priv->usb_interface[i].path, GENERIC_READ | GENERIC_WRITE); - if (file_handle == INVALID_HANDLE_VALUE) { - usbi_err(HANDLE_CTX(dev_handle), "could not open device %s (interface %d): %s", priv->usb_interface[i].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 winusbx_close(int sub_api, struct libusb_device_handle *dev_handle) -{ - struct winusb_device_handle_priv *handle_priv = get_winusb_device_handle_priv(dev_handle); - struct winusb_device_priv *priv = usbi_get_device_priv(dev_handle->dev); - HANDLE handle; - int i; - - if (sub_api == SUB_API_NOTSET) - sub_api = priv->sub_api; - - if (WinUSBX[sub_api].hDll == NULL) - return; - - if (priv->apib->id == USB_API_COMPOSITE) { - // If this is a composite device, just free and close all WinUSB-like - // interfaces directly (each is independent and not associated with another) - for (i = 0; i < USB_MAXINTERFACES; i++) { - if (priv->usb_interface[i].apib->id == USB_API_WINUSBX) { - handle = handle_priv->interface_handle[i].api_handle; - if (HANDLE_VALID(handle)) - WinUSBX[sub_api].Free(handle); - - handle = handle_priv->interface_handle[i].dev_handle; - if (HANDLE_VALID(handle)) - CloseHandle(handle); - } - } - } else { - // If this is a WinUSB device, free all interfaces above interface 0, - // then free and close interface 0 last - for (i = 1; i < USB_MAXINTERFACES; i++) { - handle = handle_priv->interface_handle[i].api_handle; - if (HANDLE_VALID(handle)) - WinUSBX[sub_api].Free(handle); - } - handle = handle_priv->interface_handle[0].api_handle; - if (HANDLE_VALID(handle)) - WinUSBX[sub_api].Free(handle); - - handle = handle_priv->interface_handle[0].dev_handle; - if (HANDLE_VALID(handle)) - CloseHandle(handle); - } -} - -static int winusbx_configure_endpoints(int sub_api, struct libusb_device_handle *dev_handle, uint8_t iface) -{ - struct winusb_device_handle_priv *handle_priv = get_winusb_device_handle_priv(dev_handle); - struct winusb_device_priv *priv = usbi_get_device_priv(dev_handle->dev); - HANDLE winusb_handle = handle_priv->interface_handle[iface].api_handle; - UCHAR policy; - ULONG timeout = 0; - uint8_t endpoint_address; - int i; - - CHECK_WINUSBX_AVAILABLE(sub_api); - - // With handle and endpoints set (in parent), we can setup the default pipe properties - // see http://download.microsoft.com/download/D/1/D/D1DD7745-426B-4CC3-A269-ABBBE427C0EF/DVC-T705_DDC08.pptx - for (i = -1; i < priv->usb_interface[iface].nb_endpoints; i++) { - endpoint_address = (i == -1) ? 0 : priv->usb_interface[iface].endpoint[i]; - if (!WinUSBX[sub_api].SetPipePolicy(winusb_handle, endpoint_address, - PIPE_TRANSFER_TIMEOUT, sizeof(ULONG), &timeout)) - usbi_dbg(HANDLE_CTX(dev_handle), "failed to set PIPE_TRANSFER_TIMEOUT for control endpoint %02X", endpoint_address); - - if ((i == -1) || (sub_api == SUB_API_LIBUSB0)) - continue; // Other policies don't apply to control endpoint or libusb0 - - policy = false; - handle_priv->interface_handle[iface].zlp[endpoint_address] = WINUSB_ZLP_UNSET; - if (!WinUSBX[sub_api].SetPipePolicy(winusb_handle, endpoint_address, - SHORT_PACKET_TERMINATE, sizeof(UCHAR), &policy)) - usbi_dbg(HANDLE_CTX(dev_handle), "failed to disable SHORT_PACKET_TERMINATE for endpoint %02X", endpoint_address); - - if (!WinUSBX[sub_api].SetPipePolicy(winusb_handle, endpoint_address, - IGNORE_SHORT_PACKETS, sizeof(UCHAR), &policy)) - usbi_dbg(HANDLE_CTX(dev_handle), "failed to disable IGNORE_SHORT_PACKETS for endpoint %02X", endpoint_address); - - policy = true; - /* ALLOW_PARTIAL_READS must be enabled due to likely libusbK bug. See: - https://sourceforge.net/mailarchive/message.php?msg_id=29736015 */ - if (!WinUSBX[sub_api].SetPipePolicy(winusb_handle, endpoint_address, - ALLOW_PARTIAL_READS, sizeof(UCHAR), &policy)) - usbi_dbg(HANDLE_CTX(dev_handle), "failed to enable ALLOW_PARTIAL_READS for endpoint %02X", endpoint_address); - - if (!WinUSBX[sub_api].SetPipePolicy(winusb_handle, endpoint_address, - AUTO_CLEAR_STALL, sizeof(UCHAR), &policy)) - usbi_dbg(HANDLE_CTX(dev_handle), "failed to enable AUTO_CLEAR_STALL for endpoint %02X", endpoint_address); - - if (sub_api == SUB_API_LIBUSBK) { - if (!WinUSBX[sub_api].SetPipePolicy(winusb_handle, endpoint_address, - ISO_ALWAYS_START_ASAP, sizeof(UCHAR), &policy)) - usbi_dbg(HANDLE_CTX(dev_handle), "failed to enable ISO_ALWAYS_START_ASAP for endpoint %02X", endpoint_address); - } - } - - return LIBUSB_SUCCESS; -} - -static int winusbx_claim_interface(int sub_api, struct libusb_device_handle *dev_handle, uint8_t iface) -{ - struct libusb_context *ctx = HANDLE_CTX(dev_handle); - struct winusb_device_handle_priv *handle_priv = get_winusb_device_handle_priv(dev_handle); - struct winusb_device_priv *priv = usbi_get_device_priv(dev_handle->dev); - bool is_using_usbccgp = (priv->apib->id == USB_API_COMPOSITE); - HDEVINFO dev_info; - char *dev_interface_path = NULL; - char *dev_interface_path_guid_start; - char filter_path[] = "\\\\.\\libusb0-0000"; - bool found_filter = false; - HANDLE file_handle, winusb_handle; - DWORD err, _index; - int r; - - CHECK_WINUSBX_AVAILABLE(sub_api); - - // If the device is composite, but using the default Windows composite parent driver (usbccgp) - // or if it's the first WinUSB-like interface, we get a handle through Initialize(). - if ((is_using_usbccgp) || (iface == 0)) { - // composite device (independent interfaces) or interface 0 - file_handle = handle_priv->interface_handle[iface].dev_handle; - if (!HANDLE_VALID(file_handle)) - return LIBUSB_ERROR_NOT_FOUND; - - if (!WinUSBX[sub_api].Initialize(file_handle, &winusb_handle)) { - handle_priv->interface_handle[iface].api_handle = INVALID_HANDLE_VALUE; - err = GetLastError(); - switch (err) { - case ERROR_BAD_COMMAND: - // The device was disconnected - usbi_err(ctx, "could not access interface %u: %s", iface, windows_error_str(0)); - return LIBUSB_ERROR_NO_DEVICE; - default: - // it may be that we're using the libusb0 filter driver. - // TODO: can we move this whole business into the K/0 DLL? - r = LIBUSB_SUCCESS; - for (_index = 0; ; _index++) { - safe_free(dev_interface_path); - - if (found_filter) - break; - - r = get_interface_details_filter(ctx, &dev_info, _index, filter_path, &dev_interface_path); - if ((r != LIBUSB_SUCCESS) || (dev_interface_path == NULL)) - break; - - // ignore GUID part - dev_interface_path_guid_start = strchr(dev_interface_path, '{'); - if (dev_interface_path_guid_start == NULL) - continue; - *dev_interface_path_guid_start = '\0'; - - if (strncmp(dev_interface_path, priv->usb_interface[iface].path, strlen(dev_interface_path)) == 0) { - file_handle = windows_open(dev_handle, filter_path, GENERIC_READ | GENERIC_WRITE); - if (file_handle != INVALID_HANDLE_VALUE) { - if (WinUSBX[sub_api].Initialize(file_handle, &winusb_handle)) { - // Replace the existing file handle with the working one - CloseHandle(handle_priv->interface_handle[iface].dev_handle); - handle_priv->interface_handle[iface].dev_handle = file_handle; - found_filter = true; - } else { - usbi_err(ctx, "could not initialize filter driver for %s", filter_path); - CloseHandle(file_handle); - } - } else { - usbi_err(ctx, "could not open device %s: %s", filter_path, windows_error_str(0)); - } - } - } - if (r != LIBUSB_SUCCESS) - return r; - if (!found_filter) { - usbi_err(ctx, "could not access interface %u: %s", iface, windows_error_str(err)); - return LIBUSB_ERROR_ACCESS; - } - } - } - handle_priv->interface_handle[iface].api_handle = winusb_handle; - } else { - // For all other interfaces, use GetAssociatedInterface() - winusb_handle = handle_priv->interface_handle[0].api_handle; - // It is a requirement for multiple interface devices on Windows that, to you - // must first claim the first interface before you claim the others - if (!HANDLE_VALID(winusb_handle)) { - file_handle = handle_priv->interface_handle[0].dev_handle; - if (WinUSBX[sub_api].Initialize(file_handle, &winusb_handle)) { - handle_priv->interface_handle[0].api_handle = winusb_handle; - usbi_warn(ctx, "auto-claimed interface 0 (required to claim %u with WinUSB)", iface); - } else { - usbi_warn(ctx, "failed to auto-claim interface 0 (required to claim %u with WinUSB): %s", iface, windows_error_str(0)); - return LIBUSB_ERROR_ACCESS; - } - } - if (!WinUSBX[sub_api].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 %u: %s", iface, windows_error_str(0)); - return LIBUSB_ERROR_ACCESS; - } - } - handle_priv->interface_handle[iface].dev_handle = handle_priv->interface_handle[0].dev_handle; - } - usbi_dbg(ctx, "claimed interface %u", iface); - handle_priv->active_interface = iface; - - return LIBUSB_SUCCESS; -} - -static int winusbx_release_interface(int sub_api, struct libusb_device_handle *dev_handle, uint8_t iface) -{ - struct winusb_device_handle_priv *handle_priv = get_winusb_device_handle_priv(dev_handle); - struct winusb_device_priv *priv = usbi_get_device_priv(dev_handle->dev); - HANDLE winusb_handle; - - CHECK_WINUSBX_AVAILABLE(sub_api); - - winusb_handle = handle_priv->interface_handle[iface].api_handle; - if (!HANDLE_VALID(winusb_handle)) - return LIBUSB_ERROR_NOT_FOUND; - - WinUSBX[sub_api].Free(winusb_handle); - handle_priv->interface_handle[iface].api_handle = INVALID_HANDLE_VALUE; - - 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 winusb_device_handle_priv *handle_priv = get_winusb_device_handle_priv(dev_handle); - struct winusb_device_priv *priv = usbi_get_device_priv(dev_handle->dev); - int i; - - if ((api_id < USB_API_WINUSBX) || (api_id > USB_API_HID)) { - usbi_dbg(HANDLE_CTX(dev_handle), "unsupported API ID"); - return -1; - } - - for (i = 0; i < USB_MAXINTERFACES; i++) { - if (HANDLE_VALID(handle_priv->interface_handle[i].dev_handle) - && HANDLE_VALID(handle_priv->interface_handle[i].api_handle) - && (priv->usb_interface[i].apib->id == api_id)) - return i; - } - - return -1; -} - -/* -* Check a specific interface is valid (of the same API type), for control transfers -*/ -static int check_valid_interface(struct libusb_device_handle *dev_handle, unsigned short interface, int api_id) -{ - struct winusb_device_handle_priv *handle_priv = get_winusb_device_handle_priv(dev_handle); - struct winusb_device_priv *priv = usbi_get_device_priv(dev_handle->dev); - - if (interface >= USB_MAXINTERFACES) - return -1; - - if ((api_id < USB_API_WINUSBX) || (api_id > USB_API_HID)) { - usbi_dbg(HANDLE_CTX(dev_handle), "unsupported API ID"); - return -1; - } - - // try the requested interface - if (HANDLE_VALID(handle_priv->interface_handle[interface].dev_handle) - && HANDLE_VALID(handle_priv->interface_handle[interface].api_handle) - && (priv->usb_interface[interface].apib->id == api_id)) - return interface; - - return -1; -} - -/* - * Lookup interface by endpoint address. -1 if not found - */ -static int interface_by_endpoint(struct winusb_device_priv *priv, - struct winusb_device_handle_priv *handle_priv, uint8_t endpoint_address) -{ - int i, j; - - for (i = 0; i < USB_MAXINTERFACES; i++) { - if (!HANDLE_VALID(handle_priv->interface_handle[i].api_handle)) - 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 winusbx_submit_control_transfer(int sub_api, struct usbi_transfer *itransfer) -{ - struct libusb_transfer *transfer = USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer); - struct winusb_device_priv *priv = usbi_get_device_priv(transfer->dev_handle->dev); - struct winusb_transfer_priv *transfer_priv = get_winusb_transfer_priv(itransfer); - struct winusb_device_handle_priv *handle_priv = get_winusb_device_handle_priv(transfer->dev_handle); - PWINUSB_SETUP_PACKET setup = (PWINUSB_SETUP_PACKET)transfer->buffer; - ULONG size, transferred; - HANDLE winusb_handle; - OVERLAPPED *overlapped; - int current_interface; - - CHECK_WINUSBX_AVAILABLE(sub_api); - - size = transfer->length - LIBUSB_CONTROL_SETUP_SIZE; - - // Windows places upper limits on the control transfer size - // See: https://docs.microsoft.com/en-us/windows-hardware/drivers/usbcon/usb-bandwidth-allocation#maximum-transfer-size - if (size > MAX_CTRL_BUFFER_LENGTH) - return LIBUSB_ERROR_INVALID_PARAM; - - if ((setup->RequestType & 0x1F) == LIBUSB_RECIPIENT_INTERFACE) - current_interface = check_valid_interface(transfer->dev_handle, setup->Index & 0xff, USB_API_WINUSBX); - else - current_interface = get_valid_interface(transfer->dev_handle, USB_API_WINUSBX); - if (current_interface < 0) { - if (auto_claim(transfer, ¤t_interface, USB_API_WINUSBX) != LIBUSB_SUCCESS) - return LIBUSB_ERROR_NOT_FOUND; - } - - usbi_dbg(ITRANSFER_CTX(itransfer), "will use interface %d", current_interface); - - transfer_priv->interface_number = (uint8_t)current_interface; - winusb_handle = handle_priv->interface_handle[current_interface].api_handle; - set_transfer_priv_handle(itransfer, handle_priv->interface_handle[current_interface].dev_handle); - overlapped = get_transfer_priv_overlapped(itransfer); - - // Sending of set configuration control requests from WinUSB creates issues, except when using libusb0.sys - if (sub_api != SUB_API_LIBUSB0 - && (LIBUSB_REQ_TYPE(setup->RequestType) == LIBUSB_REQUEST_TYPE_STANDARD) - && (setup->Request == LIBUSB_REQUEST_SET_CONFIGURATION)) { - if (setup->Value != priv->active_config) { - usbi_warn(TRANSFER_CTX(transfer), "cannot set configuration other than the default one"); - return LIBUSB_ERROR_NOT_SUPPORTED; - } - windows_force_sync_completion(itransfer, 0); - } else { - if (!WinUSBX[sub_api].ControlTransfer(winusb_handle, *setup, transfer->buffer + LIBUSB_CONTROL_SETUP_SIZE, size, &transferred, overlapped)) { - if (GetLastError() != ERROR_IO_PENDING) { - usbi_warn(TRANSFER_CTX(transfer), "ControlTransfer failed: %s", windows_error_str(0)); - return LIBUSB_ERROR_IO; - } - } else { - windows_force_sync_completion(itransfer, transferred); - } - } - - return LIBUSB_SUCCESS; -} - -static int winusbx_set_interface_altsetting(int sub_api, struct libusb_device_handle *dev_handle, uint8_t iface, uint8_t altsetting) -{ - struct winusb_device_handle_priv *handle_priv = get_winusb_device_handle_priv(dev_handle); - struct winusb_device_priv *priv = usbi_get_device_priv(dev_handle->dev); - HANDLE winusb_handle; - - CHECK_WINUSBX_AVAILABLE(sub_api); - - winusb_handle = handle_priv->interface_handle[iface].api_handle; - if (!HANDLE_VALID(winusb_handle)) { - usbi_err(HANDLE_CTX(dev_handle), "interface must be claimed first"); - return LIBUSB_ERROR_NOT_FOUND; - } - - if (!WinUSBX[sub_api].SetCurrentAlternateSetting(winusb_handle, altsetting)) { - usbi_err(HANDLE_CTX(dev_handle), "SetCurrentAlternateSetting failed: %s", windows_error_str(0)); - return LIBUSB_ERROR_IO; - } - - return LIBUSB_SUCCESS; -} - - -static void WINAPI winusbx_native_iso_transfer_continue_stream_callback(struct libusb_transfer *transfer) -{ - // If this callback is invoked, this means that we attempted to set ContinueStream - // to TRUE when calling Read/WriteIsochPipeAsap in winusbx_do_iso_transfer. - // The role of this callback is to fallback to ContinueStream = FALSE if the transfer - // did not succeed. - - struct winusb_transfer_priv *transfer_priv = - get_winusb_transfer_priv(LIBUSB_TRANSFER_TO_USBI_TRANSFER(transfer)); - bool fallback = (transfer->status != LIBUSB_TRANSFER_COMPLETED); - int idx; - - // Restore the user callback - transfer->callback = transfer_priv->iso_user_callback; - - for (idx = 0; idx < transfer->num_iso_packets && !fallback; idx++) { - if (transfer->iso_packet_desc[idx].status != LIBUSB_TRANSFER_COMPLETED) - fallback = true; - } - - if (!fallback) { - // If the transfer was successful, we restore the user callback and call it. - if (transfer->callback) - transfer->callback(transfer); - } else { - // If the transfer wasn't successful we reschedule the transfer while forcing it - // not to continue the stream. This might results in a 5-ms delay. - transfer_priv->iso_break_stream = TRUE; - libusb_submit_transfer(transfer); - } -} -static int winusbx_submit_iso_transfer(int sub_api, struct usbi_transfer *itransfer) -{ - struct libusb_transfer *transfer = USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer); - struct winusb_transfer_priv *transfer_priv = get_winusb_transfer_priv(itransfer); - struct winusb_device_handle_priv *handle_priv = get_winusb_device_handle_priv(transfer->dev_handle); - struct winusb_device_priv *priv = usbi_get_device_priv(transfer->dev_handle->dev); - HANDLE winusb_handle; - OVERLAPPED *overlapped; - BOOL ret; - int current_interface; - - CHECK_WINUSBX_AVAILABLE(sub_api); - - current_interface = interface_by_endpoint(priv, handle_priv, transfer->endpoint); - if (current_interface < 0) { - usbi_err(TRANSFER_CTX(transfer), "unable to match endpoint to an open interface - cancelling transfer"); - return LIBUSB_ERROR_NOT_FOUND; - } - - usbi_dbg(TRANSFER_CTX(transfer), "matched endpoint %02X with interface %d", transfer->endpoint, current_interface); - - transfer_priv->interface_number = (uint8_t)current_interface; - winusb_handle = handle_priv->interface_handle[current_interface].api_handle; - set_transfer_priv_handle(itransfer, handle_priv->interface_handle[current_interface].dev_handle); - overlapped = get_transfer_priv_overlapped(itransfer); - - if ((sub_api == SUB_API_LIBUSBK) || (sub_api == SUB_API_LIBUSB0)) { - int i; - UINT offset; - size_t iso_ctx_size; - PKISO_CONTEXT iso_context; - - if (WinUSBX[sub_api].IsoReadPipe == NULL) { - usbi_warn(TRANSFER_CTX(transfer), "libusbK DLL does not support isoch transfers"); - return LIBUSB_ERROR_NOT_SUPPORTED; - } - - iso_ctx_size = sizeof(KISO_CONTEXT) + (transfer->num_iso_packets * sizeof(KISO_PACKET)); - transfer_priv->iso_context = iso_context = calloc(1, iso_ctx_size); - if (transfer_priv->iso_context == NULL) - return LIBUSB_ERROR_NO_MEM; - - // start ASAP - iso_context->StartFrame = 0; - iso_context->NumberOfPackets = (SHORT)transfer->num_iso_packets; - - // convert the transfer packet lengths to iso_packet offsets - offset = 0; - for (i = 0; i < transfer->num_iso_packets; i++) { - iso_context->IsoPackets[i].offset = offset; - offset += transfer->iso_packet_desc[i].length; - } - - if (IS_XFERIN(transfer)) { - usbi_dbg(TRANSFER_CTX(transfer), "reading %d iso packets", transfer->num_iso_packets); - ret = WinUSBX[sub_api].IsoReadPipe(winusb_handle, transfer->endpoint, transfer->buffer, transfer->length, overlapped, iso_context); - } else { - usbi_dbg(TRANSFER_CTX(transfer), "writing %d iso packets", transfer->num_iso_packets); - ret = WinUSBX[sub_api].IsoWritePipe(winusb_handle, transfer->endpoint, transfer->buffer, transfer->length, overlapped, iso_context); - } - - if (!ret && GetLastError() != ERROR_IO_PENDING) { - usbi_err(TRANSFER_CTX(transfer), "IsoReadPipe/IsoWritePipe failed: %s", windows_error_str(0)); - return LIBUSB_ERROR_IO; - } - - return LIBUSB_SUCCESS; - } else if (sub_api == SUB_API_WINUSB) { - WINUSB_PIPE_INFORMATION_EX pipe_info_ex = { 0 }; - WINUSB_ISOCH_BUFFER_HANDLE buffer_handle; - ULONG iso_transfer_size_multiple; - int out_transfer_length = 0; - int idx; - - // Depending on the version of Microsoft WinUSB, isochronous transfers may not be supported. - if (WinUSBX[sub_api].ReadIsochPipeAsap == NULL) { - usbi_warn(TRANSFER_CTX(transfer), "WinUSB DLL does not support isoch transfers"); - return LIBUSB_ERROR_NOT_SUPPORTED; - } - - if (sizeof(struct libusb_iso_packet_descriptor) != sizeof(USBD_ISO_PACKET_DESCRIPTOR)) { - usbi_err(TRANSFER_CTX(transfer), "size of WinUsb and libusb isoch packet descriptors don't match"); - return LIBUSB_ERROR_NOT_SUPPORTED; - } - - // Query the pipe extended information to find the pipe index corresponding to the endpoint. - for (idx = 0; idx < priv->usb_interface[current_interface].nb_endpoints; ++idx) { - ret = WinUSBX[sub_api].QueryPipeEx(winusb_handle, (UINT8)priv->usb_interface[current_interface].current_altsetting, (UCHAR)idx, &pipe_info_ex); - if (!ret) { - usbi_err(TRANSFER_CTX(transfer), "couldn't query interface settings for USB pipe with index %d. Error: %s", idx, windows_error_str(0)); - return LIBUSB_ERROR_NOT_FOUND; - } - - if (pipe_info_ex.PipeId == transfer->endpoint && pipe_info_ex.PipeType == UsbdPipeTypeIsochronous) - break; - } - - // Make sure we found the index. - if (idx == priv->usb_interface[current_interface].nb_endpoints) { - usbi_err(TRANSFER_CTX(transfer), "couldn't find isoch endpoint 0x%02x", transfer->endpoint); - return LIBUSB_ERROR_NOT_FOUND; - } - - if (IS_XFERIN(transfer)) { - int interval = pipe_info_ex.Interval; - - // For high-speed and SuperSpeed device, the interval is 2**(bInterval-1). - if (transfer->dev_handle->dev->speed >= LIBUSB_SPEED_HIGH) - interval = (1 << (pipe_info_ex.Interval - 1)); - - // WinUSB only supports isoch transfers spanning a full USB frames. Later, we might be smarter about this - // and allocate a temporary buffer. However, this is harder than it seems as its destruction would depend on overlapped - // IO... - iso_transfer_size_multiple = (pipe_info_ex.MaximumBytesPerInterval * 8) / interval; - if (transfer->length % iso_transfer_size_multiple != 0) { - usbi_err(TRANSFER_CTX(transfer), "length of isoch buffer must be a multiple of the MaximumBytesPerInterval * 8 / Interval"); - return LIBUSB_ERROR_INVALID_PARAM; - } - } else { - // If this is an OUT transfer, we make sure the isoch packets are contiguous as this isn't supported otherwise. - bool size_should_be_zero = false; - - for (idx = 0; idx < transfer->num_iso_packets; ++idx) { - if ((size_should_be_zero && transfer->iso_packet_desc[idx].length != 0) || - (transfer->iso_packet_desc[idx].length != pipe_info_ex.MaximumBytesPerInterval && idx + 1 < transfer->num_iso_packets && transfer->iso_packet_desc[idx + 1].length > 0)) { - usbi_err(TRANSFER_CTX(transfer), "isoch packets for OUT transfer with WinUSB must be contiguous in memory"); - return LIBUSB_ERROR_INVALID_PARAM; - } - - size_should_be_zero = (transfer->iso_packet_desc[idx].length == 0); - out_transfer_length += transfer->iso_packet_desc[idx].length; - } - } - - if (transfer_priv->isoch_buffer_handle != NULL) { - if (WinUSBX[sub_api].UnregisterIsochBuffer(transfer_priv->isoch_buffer_handle)) { - transfer_priv->isoch_buffer_handle = NULL; - } else { - usbi_err(TRANSFER_CTX(transfer), "failed to unregister WinUSB isoch buffer: %s", windows_error_str(0)); - return LIBUSB_ERROR_OTHER; - } - } - - // Register the isoch buffer to the operating system. - ret = WinUSBX[sub_api].RegisterIsochBuffer(winusb_handle, transfer->endpoint, transfer->buffer, transfer->length, &buffer_handle); - if (!ret) { - usbi_err(TRANSFER_CTX(transfer), "failed to register WinUSB isoch buffer: %s", windows_error_str(0)); - return LIBUSB_ERROR_NO_MEM; - } - - // Important note: the WinUSB_Read/WriteIsochPipeAsap API requires a ContinueStream parameter that tells whether the isochronous - // stream must be continued or if the WinUSB driver can schedule the transfer at its convenience. Profiling subsequent transfers - // with ContinueStream = FALSE showed that 5 frames, i.e. about 5 milliseconds, were left empty between each transfer. This - // is critical as this greatly diminish the achievable isochronous bandwidth. We solved the problem using the following strategy: - // - Transfers are first scheduled with ContinueStream = TRUE and with winusbx_iso_transfer_continue_stream_callback as user callback. - // - If the transfer succeeds, winusbx_iso_transfer_continue_stream_callback restore the user callback and calls its. - // - If the transfer fails, winusbx_iso_transfer_continue_stream_callback reschedule the transfer and force ContinueStream = FALSE. - if (!transfer_priv->iso_break_stream) { - transfer_priv->iso_user_callback = transfer->callback; - transfer->callback = winusbx_native_iso_transfer_continue_stream_callback; - } - - // Initiate the transfers. - if (IS_XFERIN(transfer)) - ret = WinUSBX[sub_api].ReadIsochPipeAsap(buffer_handle, 0, transfer->length, !transfer_priv->iso_break_stream, transfer->num_iso_packets, (PUSBD_ISO_PACKET_DESCRIPTOR)transfer->iso_packet_desc, overlapped); - else - ret = WinUSBX[sub_api].WriteIsochPipeAsap(buffer_handle, 0, out_transfer_length, !transfer_priv->iso_break_stream, overlapped); - - if (!ret && GetLastError() != ERROR_IO_PENDING) { - usbi_err(TRANSFER_CTX(transfer), "ReadIsochPipeAsap/WriteIsochPipeAsap failed: %s", windows_error_str(0)); - if (!WinUSBX[sub_api].UnregisterIsochBuffer(buffer_handle)) - usbi_warn(TRANSFER_CTX(transfer), "failed to unregister WinUSB isoch buffer: %s", windows_error_str(0)); - return LIBUSB_ERROR_IO; - } - - // Restore the ContinueStream parameter to TRUE. - transfer_priv->iso_break_stream = FALSE; - - transfer_priv->isoch_buffer_handle = buffer_handle; - - return LIBUSB_SUCCESS; - } else { - PRINT_UNSUPPORTED_API(winusbx_submit_iso_transfer); - return LIBUSB_ERROR_NOT_SUPPORTED; - } -} - -static int winusbx_submit_bulk_transfer(int sub_api, struct usbi_transfer *itransfer) -{ - struct libusb_transfer *transfer = USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer); - struct winusb_transfer_priv *transfer_priv = get_winusb_transfer_priv(itransfer); - struct winusb_device_handle_priv *handle_priv = get_winusb_device_handle_priv(transfer->dev_handle); - struct winusb_device_priv *priv = usbi_get_device_priv(transfer->dev_handle->dev); - HANDLE winusb_handle; - OVERLAPPED *overlapped; - BOOL ret; - int current_interface; - - CHECK_WINUSBX_AVAILABLE(sub_api); - - current_interface = interface_by_endpoint(priv, handle_priv, transfer->endpoint); - if (current_interface < 0) { - usbi_err(TRANSFER_CTX(transfer), "unable to match endpoint to an open interface - cancelling transfer"); - return LIBUSB_ERROR_NOT_FOUND; - } - - usbi_dbg(TRANSFER_CTX(transfer), "matched endpoint %02X with interface %d", transfer->endpoint, current_interface); - - transfer_priv->interface_number = (uint8_t)current_interface; - winusb_handle = handle_priv->interface_handle[current_interface].api_handle; - set_transfer_priv_handle(itransfer, handle_priv->interface_handle[current_interface].dev_handle); - overlapped = get_transfer_priv_overlapped(itransfer); - - if (IS_XFERIN(transfer)) { - usbi_dbg(TRANSFER_CTX(transfer), "reading %d bytes", transfer->length); - ret = WinUSBX[sub_api].ReadPipe(winusb_handle, transfer->endpoint, transfer->buffer, transfer->length, NULL, overlapped); - } else { - // Set SHORT_PACKET_TERMINATE if ZLP requested. - // Changing this can be a problem with packets in flight, so only allow on the first transfer. - UCHAR policy = (transfer->flags & LIBUSB_TRANSFER_ADD_ZERO_PACKET) != 0; - uint8_t* current_zlp = &handle_priv->interface_handle[current_interface].zlp[transfer->endpoint]; - if (*current_zlp == WINUSB_ZLP_UNSET) { - if (policy && - !WinUSBX[sub_api].SetPipePolicy(winusb_handle, transfer->endpoint, - SHORT_PACKET_TERMINATE, sizeof(UCHAR), &policy)) { - usbi_err(TRANSFER_CTX(transfer), "failed to set SHORT_PACKET_TERMINATE for endpoint %02X", transfer->endpoint); - return LIBUSB_ERROR_NOT_SUPPORTED; - } - *current_zlp = policy ? WINUSB_ZLP_ON : WINUSB_ZLP_OFF; - } else if (policy != (*current_zlp == WINUSB_ZLP_ON)) { - usbi_err(TRANSFER_CTX(transfer), "cannot change ZERO_PACKET for endpoint %02X on Windows", transfer->endpoint); - return LIBUSB_ERROR_NOT_SUPPORTED; - } - - usbi_dbg(TRANSFER_CTX(transfer), "writing %d bytes", transfer->length); - ret = WinUSBX[sub_api].WritePipe(winusb_handle, transfer->endpoint, transfer->buffer, transfer->length, NULL, overlapped); - } - - if (!ret && GetLastError() != ERROR_IO_PENDING) { - usbi_err(TRANSFER_CTX(transfer), "ReadPipe/WritePipe failed: %s", windows_error_str(0)); - return LIBUSB_ERROR_IO; - } - - return LIBUSB_SUCCESS; -} - -static int winusbx_clear_halt(int sub_api, struct libusb_device_handle *dev_handle, unsigned char endpoint) -{ - struct winusb_device_handle_priv *handle_priv = get_winusb_device_handle_priv(dev_handle); - struct winusb_device_priv *priv = usbi_get_device_priv(dev_handle->dev); - HANDLE winusb_handle; - int current_interface; - - CHECK_WINUSBX_AVAILABLE(sub_api); - - current_interface = interface_by_endpoint(priv, handle_priv, endpoint); - if (current_interface < 0) { - usbi_err(HANDLE_CTX(dev_handle), "unable to match endpoint to an open interface - cannot clear"); - return LIBUSB_ERROR_NOT_FOUND; - } - - usbi_dbg(HANDLE_CTX(dev_handle), "matched endpoint %02X with interface %d", endpoint, current_interface); - winusb_handle = handle_priv->interface_handle[current_interface].api_handle; - - if (!WinUSBX[sub_api].ResetPipe(winusb_handle, endpoint)) { - usbi_err(HANDLE_CTX(dev_handle), "ResetPipe failed: %s", windows_error_str(0)); - return LIBUSB_ERROR_NO_DEVICE; - } - - return LIBUSB_SUCCESS; -} - -static int winusbx_cancel_transfer(int sub_api, struct usbi_transfer *itransfer) -{ - struct libusb_transfer *transfer = USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer); - struct winusb_device_handle_priv *handle_priv = get_winusb_device_handle_priv(transfer->dev_handle); - struct winusb_transfer_priv *transfer_priv = get_winusb_transfer_priv(itransfer); - struct winusb_device_priv *priv = usbi_get_device_priv(transfer->dev_handle->dev); - int current_interface = transfer_priv->interface_number; - HANDLE handle; - - CHECK_WINUSBX_AVAILABLE(sub_api); - - usbi_dbg(TRANSFER_CTX(transfer), "will use interface %d", current_interface); - - handle = handle_priv->interface_handle[current_interface].api_handle; - if (!WinUSBX[sub_api].AbortPipe(handle, transfer->endpoint)) { - usbi_err(TRANSFER_CTX(transfer), "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: (post hotplug): see if we can force eject the device and redetect it (reuse hotplug?) -static int winusbx_reset_device(int sub_api, struct libusb_device_handle *dev_handle) -{ - struct winusb_device_handle_priv *handle_priv = get_winusb_device_handle_priv(dev_handle); - struct winusb_device_priv *priv = usbi_get_device_priv(dev_handle->dev); - HANDLE winusb_handle; - int i, j; - - CHECK_WINUSBX_AVAILABLE(sub_api); - - // Reset any available pipe (except control) - for (i = 0; i < USB_MAXINTERFACES; i++) { - winusb_handle = handle_priv->interface_handle[i].api_handle; - if (HANDLE_VALID(winusb_handle)) { - for (j = 0; j < priv->usb_interface[i].nb_endpoints; j++) { - usbi_dbg(HANDLE_CTX(dev_handle), "resetting ep %02X", priv->usb_interface[i].endpoint[j]); - if (!WinUSBX[sub_api].AbortPipe(winusb_handle, priv->usb_interface[i].endpoint[j])) - usbi_err(HANDLE_CTX(dev_handle), "AbortPipe (pipe address %02X) failed: %s", - priv->usb_interface[i].endpoint[j], windows_error_str(0)); - - // FlushPipe seems to fail on OUT pipes - if (IS_EPIN(priv->usb_interface[i].endpoint[j]) - && (!WinUSBX[sub_api].FlushPipe(winusb_handle, priv->usb_interface[i].endpoint[j]))) - usbi_err(HANDLE_CTX(dev_handle), "FlushPipe (pipe address %02X) failed: %s", - priv->usb_interface[i].endpoint[j], windows_error_str(0)); - - if (!WinUSBX[sub_api].ResetPipe(winusb_handle, priv->usb_interface[i].endpoint[j])) - usbi_err(HANDLE_CTX(dev_handle), "ResetPipe (pipe address %02X) failed: %s", - priv->usb_interface[i].endpoint[j], windows_error_str(0)); - } - } - } - - // libusbK & libusb0 have the ability to issue an actual device reset - if ((sub_api != SUB_API_WINUSB) && (WinUSBX[sub_api].ResetDevice != NULL)) { - winusb_handle = handle_priv->interface_handle[0].api_handle; - if (HANDLE_VALID(winusb_handle)) - WinUSBX[sub_api].ResetDevice(winusb_handle); - } - - return LIBUSB_SUCCESS; -} - -static enum libusb_transfer_status winusbx_copy_transfer_data(int sub_api, struct usbi_transfer *itransfer, DWORD length) -{ - struct libusb_transfer *transfer = USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer); - struct winusb_transfer_priv *transfer_priv = get_winusb_transfer_priv(itransfer); - int i; - - if (transfer->type == LIBUSB_TRANSFER_TYPE_ISOCHRONOUS) { - // for isochronous, need to copy the individual iso packet actual_lengths and statuses - if ((sub_api == SUB_API_LIBUSBK) || (sub_api == SUB_API_LIBUSB0)) { - // iso only supported on libusbk-based backends for now - PKISO_CONTEXT iso_context = transfer_priv->iso_context; - for (i = 0; i < transfer->num_iso_packets; i++) { - transfer->iso_packet_desc[i].actual_length = iso_context->IsoPackets[i].actual_length; - // TODO translate USDB_STATUS codes http://msdn.microsoft.com/en-us/library/ff539136(VS.85).aspx to libusb_transfer_status - //transfer->iso_packet_desc[i].status = transfer_priv->iso_context->IsoPackets[i].status; - } - } else if (sub_api == SUB_API_WINUSB) { - if (IS_XFERIN(transfer)) { - /* Convert isochronous packet descriptor between Windows and libusb representation. - * Both representation are guaranteed to have the same length in bytes.*/ - PUSBD_ISO_PACKET_DESCRIPTOR usbd_iso_packet_desc = (PUSBD_ISO_PACKET_DESCRIPTOR)transfer->iso_packet_desc; - for (i = 0; i < transfer->num_iso_packets; i++) { - unsigned int packet_length = (i < transfer->num_iso_packets - 1) ? (usbd_iso_packet_desc[i + 1].Offset - usbd_iso_packet_desc[i].Offset) : usbd_iso_packet_desc[i].Length; - unsigned int actual_length = usbd_iso_packet_desc[i].Length; - USBD_STATUS status = usbd_iso_packet_desc[i].Status; - - transfer->iso_packet_desc[i].length = packet_length; - transfer->iso_packet_desc[i].actual_length = actual_length; - transfer->iso_packet_desc[i].status = usbd_status_to_libusb_transfer_status(status); - } - } else { - for (i = 0; i < transfer->num_iso_packets; i++) { - transfer->iso_packet_desc[i].status = LIBUSB_TRANSFER_COMPLETED; - } - } - } else { - // This should only occur if backend is not set correctly or other backend isoc is partially implemented - PRINT_UNSUPPORTED_API(copy_transfer_data); - return LIBUSB_TRANSFER_ERROR; - } - } - - itransfer->transferred += (int)length; - 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 *hid_priv, 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)hid_priv->vid; - d.idProduct = (uint16_t)hid_priv->pid; - d.bcdDevice = 0x0100; - d.iManufacturer = hid_priv->string_index[0]; - d.iProduct = hid_priv->string_index[1]; - d.iSerialNumber = hid_priv->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 *hid_priv, 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 (hid_priv->input_report_size) - num_endpoints++; - if (hid_priv->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(hid_priv, hd, &tmp_size); - - if (hid_priv->input_report_size) { - ed->bLength = LIBUSB_DT_ENDPOINT_SIZE; - ed->bDescriptorType = LIBUSB_DT_ENDPOINT; - ed->bEndpointAddress = HID_IN_EP; - ed->bmAttributes = 3; - ed->wMaxPacketSize = hid_priv->input_report_size - 1; - ed->bInterval = 10; - ed = (struct libusb_endpoint_descriptor *)((char *)ed + LIBUSB_DT_ENDPOINT_SIZE); - } - - if (hid_priv->output_report_size) { - ed->bLength = LIBUSB_DT_ENDPOINT_SIZE; - ed->bDescriptorType = LIBUSB_DT_ENDPOINT; - ed->bEndpointAddress = HID_OUT_EP; - ed->bmAttributes = 3; - ed->wMaxPacketSize = hid_priv->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 *hid_priv, int _index, - void *data, size_t *size, HANDLE hid_handle) -{ - void *tmp = NULL; - WCHAR string[MAX_USB_STRING_LENGTH]; - size_t tmp_size = 0; - int i; - - /* language ID, EN-US */ - char string_langid[] = {0x09, 0x04}; - - if (_index == 0) { - tmp = string_langid; - tmp_size = sizeof(string_langid) + 2; - } else { - for (i = 0; i < 3; i++) { - if (_index == (hid_priv->string_index[i])) { - tmp = hid_priv->string[i]; - tmp_size = (_hid_wcslen(hid_priv->string[i]) + 1) * sizeof(WCHAR); - break; - } - } - - if (i == 3) { - if (!HidD_GetIndexedString(hid_handle, _index, string, sizeof(string))) - return LIBUSB_ERROR_INVALID_PARAM; - tmp = string; - tmp_size = (_hid_wcslen(string) + 1) * sizeof(WCHAR); - } - } - - 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 *hid_priv, 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(hid_priv, 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 *hid_priv, void *data, size_t *size) -{ - uint8_t d[MAX_HID_DESCRIPTOR_SIZE]; - size_t i = 0; - - /* usage page */ - d[i++] = 0x06; d[i++] = hid_priv->usagePage & 0xFF; d[i++] = hid_priv->usagePage >> 8; - /* usage */ - d[i++] = 0x09; d[i++] = (uint8_t)hid_priv->usage; - /* start collection (application) */ - d[i++] = 0xA1; d[i++] = 0x01; - /* input report */ - if (hid_priv->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)hid_priv->input_report_size - 1; - /* input (data, variable, absolute) */ - d[i++] = 0x81; d[i++] = 0x00; - } - /* output report */ - if (hid_priv->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)hid_priv->output_report_size - 1; - /* output (data, variable, absolute) */ - d[i++] = 0x91; d[i++] = 0x00; - } - /* feature report */ - if (hid_priv->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)hid_priv->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 libusb_device *dev, HANDLE hid_handle, int recipient, - int type, int _index, void *data, size_t *size) -{ - struct winusb_device_priv *priv = usbi_get_device_priv(dev); - UNUSED(recipient); - - switch (type) { - case LIBUSB_DT_DEVICE: - usbi_dbg(DEVICE_CTX(dev), "LIBUSB_DT_DEVICE"); - return _hid_get_device_descriptor(priv->hid, data, size); - case LIBUSB_DT_CONFIG: - usbi_dbg(DEVICE_CTX(dev), "LIBUSB_DT_CONFIG"); - if (!_index) - return _hid_get_config_descriptor(priv->hid, data, size); - return LIBUSB_ERROR_INVALID_PARAM; - case LIBUSB_DT_STRING: - usbi_dbg(DEVICE_CTX(dev), "LIBUSB_DT_STRING"); - return _hid_get_string_descriptor(priv->hid, _index, data, size, hid_handle); - case LIBUSB_DT_HID: - usbi_dbg(DEVICE_CTX(dev), "LIBUSB_DT_HID"); - if (!_index) - return _hid_get_hid_descriptor(priv->hid, data, size); - return LIBUSB_ERROR_INVALID_PARAM; - case LIBUSB_DT_REPORT: - usbi_dbg(DEVICE_CTX(dev), "LIBUSB_DT_REPORT"); - if (!_index) - return _hid_get_report_descriptor(priv->hid, data, size); - return LIBUSB_ERROR_INVALID_PARAM; - case LIBUSB_DT_PHYSICAL: - usbi_dbg(DEVICE_CTX(dev), "LIBUSB_DT_PHYSICAL"); - if (HidD_GetPhysicalDescriptor(hid_handle, data, (ULONG)*size)) - return LIBUSB_COMPLETED; - return LIBUSB_ERROR_OTHER; - } - - usbi_warn(DEVICE_CTX(dev), "unsupported"); - return LIBUSB_ERROR_NOT_SUPPORTED; -} - -static int _hid_get_report(struct libusb_device *dev, HANDLE hid_handle, int id, void *data, - struct winusb_transfer_priv *tp, size_t size, OVERLAPPED *overlapped, int report_type) -{ - DWORD ioctl_code, expected_size = (DWORD)size; - uint8_t *buf; - - if (tp->hid_buffer != NULL) - usbi_err(DEVICE_CTX(dev), "program assertion failed - hid_buffer is not NULL"); - - if ((size == 0) || (size > MAX_HID_REPORT_SIZE)) { - usbi_warn(DEVICE_CTX(dev), "invalid size (%"PRIuPTR")", (uintptr_t)size); - return LIBUSB_ERROR_INVALID_PARAM; - } - - switch (report_type) { - case HID_REPORT_TYPE_INPUT: - ioctl_code = IOCTL_HID_GET_INPUT_REPORT; - break; - case HID_REPORT_TYPE_FEATURE: - ioctl_code = IOCTL_HID_GET_FEATURE; - break; - default: - usbi_warn(DEVICE_CTX(dev), "unknown HID report type %d", report_type); - return LIBUSB_ERROR_INVALID_PARAM; - } - - // Add a trailing byte to detect overflows - buf = calloc(1, expected_size + 1); - if (buf == NULL) - return LIBUSB_ERROR_NO_MEM; - - buf[0] = (uint8_t)id; // Must be set always - usbi_dbg(DEVICE_CTX(dev), "report ID: 0x%02X", buf[0]); - - // NB: The size returned by DeviceIoControl doesn't include report IDs when not in use (0) - if (!DeviceIoControl(hid_handle, ioctl_code, buf, expected_size + 1, - buf, expected_size + 1, NULL, overlapped)) { - if (GetLastError() != ERROR_IO_PENDING) { - usbi_err(DEVICE_CTX(dev), "failed to read HID Report: %s", windows_error_str(0)); - 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 - tp->hid_expected_size = expected_size; - - return LIBUSB_SUCCESS; -} - -static int _hid_set_report(struct libusb_device *dev, HANDLE hid_handle, int id, void *data, - struct winusb_transfer_priv *tp, size_t size, OVERLAPPED *overlapped, int report_type) -{ - DWORD ioctl_code, write_size = (DWORD)size; - // If an id is reported, we must allow MAX_HID_REPORT_SIZE + 1 - size_t max_report_size = MAX_HID_REPORT_SIZE + (id ? 1 : 0); - uint8_t *buf; - - if (tp->hid_buffer != NULL) - usbi_err(DEVICE_CTX(dev), "program assertion failed - hid_buffer is not NULL"); - - if ((size == 0) || (size > max_report_size)) { - usbi_warn(DEVICE_CTX(dev), "invalid size (%"PRIuPTR")", (uintptr_t)size); - return LIBUSB_ERROR_INVALID_PARAM; - } - - switch (report_type) { - case HID_REPORT_TYPE_OUTPUT: - ioctl_code = IOCTL_HID_SET_OUTPUT_REPORT; - break; - case HID_REPORT_TYPE_FEATURE: - ioctl_code = IOCTL_HID_SET_FEATURE; - break; - default: - usbi_warn(DEVICE_CTX(dev), "unknown HID report type %d", report_type); - return LIBUSB_ERROR_INVALID_PARAM; - } - - usbi_dbg(DEVICE_CTX(dev), "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(DEVICE_CTX(dev), "mismatched report ID (data is %02X, parameter is %02X)", buf[0], id); - } - - // NB: The size returned by DeviceIoControl doesn't include report IDs when not in use (0) - if (!DeviceIoControl(hid_handle, ioctl_code, buf, write_size, - buf, write_size, NULL, overlapped)) { - if (GetLastError() != ERROR_IO_PENDING) { - usbi_err(DEVICE_CTX(dev), "failed to write HID Output Report: %s", windows_error_str(0)); - free(buf); - return LIBUSB_ERROR_IO; - } - } - - tp->hid_buffer = buf; - tp->hid_dest = NULL; - return LIBUSB_SUCCESS; -} - -static int _hid_class_request(struct libusb_device *dev, HANDLE hid_handle, int request_type, - int request, int value, int _index, void *data, struct winusb_transfer_priv *tp, - size_t size, OVERLAPPED *overlapped) -{ - int report_type = (value >> 8) & 0xFF; - int report_id = value & 0xFF; - - UNUSED(_index); - - 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) - return _hid_set_report(dev, hid_handle, report_id, data, tp, size, overlapped, report_type); - - if (LIBUSB_REQ_IN(request_type) && request == HID_REQ_GET_REPORT) - return _hid_get_report(dev, hid_handle, report_id, data, tp, size, overlapped, report_type); - - return LIBUSB_ERROR_INVALID_PARAM; -} - -/* - * HID API functions - */ -static bool hid_init(struct libusb_context *ctx) -{ - DLL_GET_HANDLE(ctx, hid); - - DLL_LOAD_FUNC(hid, HidD_GetAttributes, true); - DLL_LOAD_FUNC(hid, HidD_GetHidGuid, true); - DLL_LOAD_FUNC(hid, HidD_GetPreparsedData, true); - DLL_LOAD_FUNC(hid, HidD_FreePreparsedData, true); - DLL_LOAD_FUNC(hid, HidD_GetManufacturerString, true); - DLL_LOAD_FUNC(hid, HidD_GetProductString, true); - DLL_LOAD_FUNC(hid, HidD_GetSerialNumberString, true); - DLL_LOAD_FUNC(hid, HidD_GetIndexedString, true); - DLL_LOAD_FUNC(hid, HidP_GetCaps, true); - DLL_LOAD_FUNC(hid, HidD_SetNumInputBuffers, true); - DLL_LOAD_FUNC(hid, HidD_GetPhysicalDescriptor, true); - DLL_LOAD_FUNC(hid, HidD_FlushQueue, true); - DLL_LOAD_FUNC(hid, HidP_GetValueCaps, true); - - return true; -} - -static void hid_exit(void) -{ - DLL_FREE_HANDLE(hid); -} - -// 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(int sub_api, struct libusb_device_handle *dev_handle) -{ - struct libusb_device *dev = dev_handle->dev; - struct winusb_device_priv *priv = usbi_get_device_priv(dev); - struct winusb_device_handle_priv *handle_priv = get_winusb_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]; - int nb_ids[2]; // zero and nonzero report IDs -#if defined(ENABLE_LOGGING) - const char * const type[3] = {"input", "output", "feature"}; -#endif - - UNUSED(sub_api); - CHECK_HID_AVAILABLE; - - if (priv->hid == NULL) { - usbi_err(HANDLE_CTX(dev_handle), "program assertion failed - private HID structure is uninitialized"); - 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 = windows_open(dev_handle, priv->usb_interface[i].path, GENERIC_READ | GENERIC_WRITE); - /* - * 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(HANDLE_CTX(dev_handle), "could not open HID device in R/W mode (keyboard or mouse?) - trying without"); - hid_handle = windows_open(dev_handle, priv->usb_interface[i].path, 0); - if (hid_handle == INVALID_HANDLE_VALUE) { - usbi_err(HANDLE_CTX(dev_handle), "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(HANDLE_CTX(dev_handle), "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(HANDLE_CTX(dev_handle), "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(HANDLE_CTX(dev_handle), "could not read HID preparsed data (HidD_GetPreparsedData)"); - break; - } - if (HidP_GetCaps(preparsed_data, &capabilities) != HIDP_STATUS_SUCCESS) { - usbi_err(HANDLE_CTX(dev_handle), "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 = HidP_Input; j <= HidP_Feature; j++) { - usbi_dbg(HANDLE_CTX(dev_handle), "%lu HID %s report value(s) found", ULONG_CAST(size[j]), type[j]); - priv->hid->uses_report_ids[j] = false; - if (size[j] > 0) { - value_caps = calloc(size[j], sizeof(HIDP_VALUE_CAPS)); - if ((value_caps != NULL) - && (HidP_GetValueCaps((HIDP_REPORT_TYPE)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(HANDLE_CTX(dev_handle), " 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(HANDLE_CTX(dev_handle), "program assertion failed - zero and nonzero report IDs used for %s", - type[j]); - priv->hid->uses_report_ids[j] = true; - } - } else { - usbi_warn(HANDLE_CTX(dev_handle), " could not process %s report IDs", type[j]); - } - 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; - - // Store usage and usagePage values - priv->hid->usage = capabilities.Usage; - priv->hid->usagePage = capabilities.UsagePage; - - // Fetch string descriptors - priv->hid->string_index[0] = dev->device_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] = dev->device_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] = dev->device_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(int sub_api, struct libusb_device_handle *dev_handle) -{ - struct winusb_device_priv *priv = usbi_get_device_priv(dev_handle->dev); - struct winusb_device_handle_priv *handle_priv = get_winusb_device_handle_priv(dev_handle); - HANDLE file_handle; - int i; - - UNUSED(sub_api); - - if (DLL_HANDLE_NAME(hid) == NULL) - 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 (HANDLE_VALID(file_handle)) - CloseHandle(file_handle); - } - } -} - -static int hid_claim_interface(int sub_api, struct libusb_device_handle *dev_handle, uint8_t iface) -{ - struct winusb_device_handle_priv *handle_priv = get_winusb_device_handle_priv(dev_handle); - struct winusb_device_priv *priv = usbi_get_device_priv(dev_handle->dev); - - UNUSED(sub_api); - 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(HANDLE_CTX(dev_handle), "claimed interface %u", iface); - handle_priv->active_interface = iface; - - return LIBUSB_SUCCESS; -} - -static int hid_release_interface(int sub_api, struct libusb_device_handle *dev_handle, uint8_t iface) -{ - struct winusb_device_handle_priv *handle_priv = get_winusb_device_handle_priv(dev_handle); - struct winusb_device_priv *priv = usbi_get_device_priv(dev_handle->dev); - - UNUSED(sub_api); - 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(int sub_api, struct libusb_device_handle *dev_handle, uint8_t iface, uint8_t altsetting) -{ - UNUSED(sub_api); - UNUSED(iface); - - CHECK_HID_AVAILABLE; - - if (altsetting != 0) { - usbi_err(HANDLE_CTX(dev_handle), "set interface altsetting not supported for altsetting >0"); - return LIBUSB_ERROR_NOT_SUPPORTED; - } - - return LIBUSB_SUCCESS; -} - -static int hid_submit_control_transfer(int sub_api, struct usbi_transfer *itransfer) -{ - struct libusb_transfer *transfer = USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer); - struct winusb_transfer_priv *transfer_priv = get_winusb_transfer_priv(itransfer); - struct libusb_device_handle *dev_handle = transfer->dev_handle; - struct winusb_device_handle_priv *handle_priv = get_winusb_device_handle_priv(dev_handle); - struct winusb_device_priv *priv = usbi_get_device_priv(transfer->dev_handle->dev); - WINUSB_SETUP_PACKET *setup = (WINUSB_SETUP_PACKET *)transfer->buffer; - HANDLE hid_handle; - OVERLAPPED *overlapped; - int current_interface; - uint8_t config; - size_t size; - int r; - - UNUSED(sub_api); - CHECK_HID_AVAILABLE; - - 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(dev_handle, USB_API_HID); - if (current_interface < 0) { - if (auto_claim(transfer, ¤t_interface, USB_API_HID) != LIBUSB_SUCCESS) - return LIBUSB_ERROR_NOT_FOUND; - } - - usbi_dbg(ITRANSFER_CTX(itransfer), "will use interface %d", current_interface); - - transfer_priv->interface_number = (uint8_t)current_interface; - hid_handle = handle_priv->interface_handle[current_interface].api_handle; - set_transfer_priv_handle(itransfer, hid_handle); - overlapped = get_transfer_priv_overlapped(itransfer); - - switch (LIBUSB_REQ_TYPE(setup->RequestType)) { - case LIBUSB_REQUEST_TYPE_STANDARD: - switch (setup->Request) { - case LIBUSB_REQUEST_GET_DESCRIPTOR: - r = _hid_get_descriptor(dev_handle->dev, hid_handle, LIBUSB_REQ_RECIPIENT(setup->RequestType), - (setup->Value >> 8) & 0xFF, setup->Value & 0xFF, transfer->buffer + LIBUSB_CONTROL_SETUP_SIZE, &size); - break; - case LIBUSB_REQUEST_GET_CONFIGURATION: - r = winusb_get_configuration(dev_handle, &config); - if (r == LIBUSB_SUCCESS) { - size = 1; - ((uint8_t *)transfer->buffer)[LIBUSB_CONTROL_SETUP_SIZE] = config; - r = LIBUSB_COMPLETED; - } - break; - case LIBUSB_REQUEST_SET_CONFIGURATION: - if (setup->Value == priv->active_config) { - r = LIBUSB_COMPLETED; - } else { - usbi_warn(TRANSFER_CTX(transfer), "cannot set configuration other than the default one"); - r = LIBUSB_ERROR_NOT_SUPPORTED; - } - 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(0, dev_handle, (uint8_t)setup->Index, (uint8_t)setup->Value); - if (r == LIBUSB_SUCCESS) - r = LIBUSB_COMPLETED; - break; - default: - usbi_warn(TRANSFER_CTX(transfer), "unsupported HID control request"); - return LIBUSB_ERROR_NOT_SUPPORTED; - } - break; - case LIBUSB_REQUEST_TYPE_CLASS: - r = _hid_class_request(dev_handle->dev, hid_handle, setup->RequestType, setup->Request, setup->Value, - setup->Index, transfer->buffer + LIBUSB_CONTROL_SETUP_SIZE, transfer_priv, - size, overlapped); - break; - default: - usbi_warn(TRANSFER_CTX(transfer), "unsupported HID control request"); - return LIBUSB_ERROR_NOT_SUPPORTED; - } - - if (r < 0) - return r; - - if (r == LIBUSB_COMPLETED) { - // Force request to be completed synchronously. Transferred size has been set by previous call - windows_force_sync_completion(itransfer, (ULONG)size); - r = LIBUSB_SUCCESS; - } - - return LIBUSB_SUCCESS; -} - -static int hid_submit_bulk_transfer(int sub_api, struct usbi_transfer *itransfer) -{ - struct libusb_transfer *transfer = USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer); - struct winusb_transfer_priv *transfer_priv = get_winusb_transfer_priv(itransfer); - struct winusb_device_handle_priv *handle_priv = get_winusb_device_handle_priv(transfer->dev_handle); - struct winusb_device_priv *priv = usbi_get_device_priv(transfer->dev_handle->dev); - HANDLE hid_handle; - OVERLAPPED *overlapped; - bool direction_in; - BOOL ret; - int current_interface, length; - - UNUSED(sub_api); - CHECK_HID_AVAILABLE; - - if (IS_XFEROUT(transfer) && (transfer->flags & LIBUSB_TRANSFER_ADD_ZERO_PACKET)) - return LIBUSB_ERROR_NOT_SUPPORTED; - - 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(TRANSFER_CTX(transfer), "unable to match endpoint to an open interface - cancelling transfer"); - return LIBUSB_ERROR_NOT_FOUND; - } - - usbi_dbg(TRANSFER_CTX(transfer), "matched endpoint %02X with interface %d", transfer->endpoint, current_interface); - - transfer_priv->interface_number = (uint8_t)current_interface; - hid_handle = handle_priv->interface_handle[current_interface].api_handle; - set_transfer_priv_handle(itransfer, hid_handle); - overlapped = get_transfer_priv_overlapped(itransfer); - direction_in = IS_XFERIN(transfer); - - // 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 = calloc(1, length + 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(TRANSFER_CTX(transfer), "reading %d bytes (report ID: 0x00)", length); - ret = ReadFile(hid_handle, transfer_priv->hid_buffer, length + 1, NULL, 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(TRANSFER_CTX(transfer), "writing %d bytes (report ID: 0x%02X)", length, transfer_priv->hid_buffer[0]); - ret = WriteFile(hid_handle, transfer_priv->hid_buffer, length, NULL, overlapped); - } - - if (!ret && GetLastError() != ERROR_IO_PENDING) { - usbi_err(TRANSFER_CTX(transfer), "HID transfer failed: %s", windows_error_str(0)); - safe_free(transfer_priv->hid_buffer); - return LIBUSB_ERROR_IO; - } - - return LIBUSB_SUCCESS; -} - -static int hid_reset_device(int sub_api, struct libusb_device_handle *dev_handle) -{ - struct winusb_device_handle_priv *handle_priv = get_winusb_device_handle_priv(dev_handle); - HANDLE hid_handle; - int current_interface; - - UNUSED(sub_api); - 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 (HANDLE_VALID(hid_handle)) - HidD_FlushQueue(hid_handle); - } - - return LIBUSB_SUCCESS; -} - -static int hid_clear_halt(int sub_api, struct libusb_device_handle *dev_handle, unsigned char endpoint) -{ - struct winusb_device_handle_priv *handle_priv = get_winusb_device_handle_priv(dev_handle); - struct winusb_device_priv *priv = usbi_get_device_priv(dev_handle->dev); - HANDLE hid_handle; - int current_interface; - - UNUSED(sub_api); - CHECK_HID_AVAILABLE; - - current_interface = interface_by_endpoint(priv, handle_priv, endpoint); - if (current_interface < 0) { - usbi_err(HANDLE_CTX(dev_handle), "unable to match endpoint to an open interface - cannot clear"); - return LIBUSB_ERROR_NOT_FOUND; - } - - usbi_dbg(HANDLE_CTX(dev_handle), "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(HANDLE_CTX(dev_handle), "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 enum libusb_transfer_status hid_copy_transfer_data(int sub_api, struct usbi_transfer *itransfer, DWORD length) -{ - struct libusb_transfer *transfer = USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer); - struct winusb_transfer_priv *transfer_priv = get_winusb_transfer_priv(itransfer); - enum libusb_transfer_status r = LIBUSB_TRANSFER_COMPLETED; - - UNUSED(sub_api); - - 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 - if (length > 0) { - // First, check for overflow - if ((size_t)length > transfer_priv->hid_expected_size) { - usbi_err(TRANSFER_CTX(transfer), "OVERFLOW!"); - length = (DWORD)transfer_priv->hid_expected_size; - r = LIBUSB_TRANSFER_OVERFLOW; - } - - if (transfer_priv->hid_buffer[0] == 0) { - memcpy(transfer_priv->hid_dest, transfer_priv->hid_buffer + 1, length); - } else { - memcpy(transfer_priv->hid_dest, transfer_priv->hid_buffer, length); - } - } - transfer_priv->hid_dest = NULL; - } - // For write, we just need to free the hid buffer - safe_free(transfer_priv->hid_buffer); - } - - itransfer->transferred += (int)length; - return r; -} - - -/* - * Composite API functions - */ -static int composite_open(int sub_api, struct libusb_device_handle *dev_handle) -{ - struct winusb_device_priv *priv = usbi_get_device_priv(dev_handle->dev); - int i, r = LIBUSB_ERROR_NOT_FOUND; - // SUB_API_MAX + 1 as the SUB_API_MAX pos is used to indicate availability of HID - bool available[SUB_API_MAX + 1]; - - UNUSED(sub_api); - - for (i = 0; i < SUB_API_MAX + 1; i++) - available[i] = false; - - for (i = 0; i < USB_MAXINTERFACES; i++) { - switch (priv->usb_interface[i].apib->id) { - case USB_API_WINUSBX: - if (priv->usb_interface[i].sub_api != SUB_API_NOTSET) - available[priv->usb_interface[i].sub_api] = true; - break; - case USB_API_HID: - available[SUB_API_MAX] = true; - break; - default: - break; - } - } - - for (i = 0; i < SUB_API_MAX; i++) { // WinUSB-like drivers - if (available[i]) { - r = usb_api_backend[USB_API_WINUSBX].open(i, dev_handle); - if (r != LIBUSB_SUCCESS) - return r; - } - } - - if (available[SUB_API_MAX]) { // HID driver - r = hid_open(SUB_API_NOTSET, dev_handle); - - // On Windows 10 version 1903 (OS Build 18362) and later Windows blocks attempts to - // open HID devices with a U2F usage unless running as administrator. We ignore this - // failure and proceed without the HID device opened. - if (r == LIBUSB_ERROR_ACCESS) { - usbi_dbg(HANDLE_CTX(dev_handle), "ignoring access denied error while opening HID interface of composite device"); - r = LIBUSB_SUCCESS; - } - } - - return r; -} - -static void composite_close(int sub_api, struct libusb_device_handle *dev_handle) -{ - struct winusb_device_priv *priv = usbi_get_device_priv(dev_handle->dev); - int i; - // SUB_API_MAX + 1 as the SUB_API_MAX pos is used to indicate availability of HID - bool available[SUB_API_MAX + 1]; - - UNUSED(sub_api); - - for (i = 0; i < SUB_API_MAX + 1; i++) - available[i] = false; - - for (i = 0; i < USB_MAXINTERFACES; i++) { - switch (priv->usb_interface[i].apib->id) { - case USB_API_WINUSBX: - if (priv->usb_interface[i].sub_api != SUB_API_NOTSET) - available[priv->usb_interface[i].sub_api] = true; - break; - case USB_API_HID: - available[SUB_API_MAX] = true; - break; - default: - break; - } - } - - for (i = 0; i < SUB_API_MAX; i++) { // WinUSB-like drivers - if (available[i]) - usb_api_backend[USB_API_WINUSBX].close(i, dev_handle); - } - - if (available[SUB_API_MAX]) // HID driver - hid_close(SUB_API_NOTSET, dev_handle); -} - -static int composite_claim_interface(int sub_api, struct libusb_device_handle *dev_handle, uint8_t iface) -{ - struct winusb_device_priv *priv = usbi_get_device_priv(dev_handle->dev); - - UNUSED(sub_api); - CHECK_SUPPORTED_API(priv->usb_interface[iface].apib, claim_interface); - - return priv->usb_interface[iface].apib-> - claim_interface(priv->usb_interface[iface].sub_api, dev_handle, iface); -} - -static int composite_set_interface_altsetting(int sub_api, struct libusb_device_handle *dev_handle, uint8_t iface, uint8_t altsetting) -{ - struct winusb_device_priv *priv = usbi_get_device_priv(dev_handle->dev); - - UNUSED(sub_api); - CHECK_SUPPORTED_API(priv->usb_interface[iface].apib, set_interface_altsetting); - - return priv->usb_interface[iface].apib-> - set_interface_altsetting(priv->usb_interface[iface].sub_api, dev_handle, iface, altsetting); -} - -static int composite_release_interface(int sub_api, struct libusb_device_handle *dev_handle, uint8_t iface) -{ - struct winusb_device_priv *priv = usbi_get_device_priv(dev_handle->dev); - - UNUSED(sub_api); - CHECK_SUPPORTED_API(priv->usb_interface[iface].apib, release_interface); - - return priv->usb_interface[iface].apib-> - release_interface(priv->usb_interface[iface].sub_api, dev_handle, iface); -} - -static int composite_submit_control_transfer(int sub_api, struct usbi_transfer *itransfer) -{ - struct libusb_transfer *transfer = USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer); - struct winusb_device_priv *priv = usbi_get_device_priv(transfer->dev_handle->dev); - struct libusb_config_descriptor *conf_desc; - WINUSB_SETUP_PACKET *setup = (WINUSB_SETUP_PACKET *)transfer->buffer; - int iface, pass, r; - - UNUSED(sub_api); - - // Interface shouldn't matter for control, but it does in practice, with Windows' - // restrictions with regards to accessing HID keyboards and mice. Try to target - // a specific interface first, if possible. - switch (LIBUSB_REQ_RECIPIENT(setup->RequestType)) { - case LIBUSB_RECIPIENT_INTERFACE: - iface = setup->Index & 0xFF; - break; - case LIBUSB_RECIPIENT_ENDPOINT: - r = libusb_get_active_config_descriptor(transfer->dev_handle->dev, &conf_desc); - if (r == LIBUSB_SUCCESS) { - iface = get_interface_by_endpoint(conf_desc, (setup->Index & 0xFF)); - libusb_free_config_descriptor(conf_desc); - break; - } - // No break if not able to determine interface - // Fall through - default: - iface = -1; - break; - } - - // Try and target a specific interface if the control setup indicates such - if ((iface >= 0) && (iface < USB_MAXINTERFACES)) { - usbi_dbg(TRANSFER_CTX(transfer), "attempting control transfer targeted to interface %d", iface); - if ((priv->usb_interface[iface].path != NULL) - && (priv->usb_interface[iface].apib->submit_control_transfer != NULL)) { - r = priv->usb_interface[iface].apib->submit_control_transfer(priv->usb_interface[iface].sub_api, itransfer); - if (r == LIBUSB_SUCCESS) - return r; - } - } - - // Either not targeted to a specific interface or no luck in doing so. - // Try a 2 pass approach with all interfaces. - for (pass = 0; pass < 2; pass++) { - for (iface = 0; iface < USB_MAXINTERFACES; iface++) { - if ((priv->usb_interface[iface].path != NULL) - && (priv->usb_interface[iface].apib->submit_control_transfer != NULL)) { - if ((pass == 0) && (priv->usb_interface[iface].restricted_functionality)) { - usbi_dbg(TRANSFER_CTX(transfer), "trying to skip restricted interface #%d (HID keyboard or mouse?)", iface); - continue; - } - usbi_dbg(TRANSFER_CTX(transfer), "using interface %d", iface); - r = priv->usb_interface[iface].apib->submit_control_transfer(priv->usb_interface[iface].sub_api, itransfer); - // If not supported on this API, it may be supported on another, so don't give up yet!! - if (r == LIBUSB_ERROR_NOT_SUPPORTED) - continue; - return r; - } - } - } - - usbi_err(TRANSFER_CTX(transfer), "no libusb supported interfaces to complete request"); - return LIBUSB_ERROR_NOT_FOUND; -} - -static int composite_submit_bulk_transfer(int sub_api, struct usbi_transfer *itransfer) -{ - struct libusb_transfer *transfer = USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer); - struct winusb_device_handle_priv *handle_priv = get_winusb_device_handle_priv(transfer->dev_handle); - struct winusb_device_priv *priv = usbi_get_device_priv(transfer->dev_handle->dev); - int current_interface; - - UNUSED(sub_api); - - current_interface = interface_by_endpoint(priv, handle_priv, transfer->endpoint); - if (current_interface < 0) { - usbi_err(TRANSFER_CTX(transfer), "unable to match endpoint to an open interface - cancelling transfer"); - return LIBUSB_ERROR_NOT_FOUND; - } - - CHECK_SUPPORTED_API(priv->usb_interface[current_interface].apib, submit_bulk_transfer); - - return priv->usb_interface[current_interface].apib-> - submit_bulk_transfer(priv->usb_interface[current_interface].sub_api, itransfer); -} - -static int composite_submit_iso_transfer(int sub_api, struct usbi_transfer *itransfer) -{ - struct libusb_transfer *transfer = USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer); - struct winusb_device_handle_priv *handle_priv = get_winusb_device_handle_priv(transfer->dev_handle); - struct winusb_device_priv *priv = usbi_get_device_priv(transfer->dev_handle->dev); - int current_interface; - - UNUSED(sub_api); - - current_interface = interface_by_endpoint(priv, handle_priv, transfer->endpoint); - if (current_interface < 0) { - usbi_err(TRANSFER_CTX(transfer), "unable to match endpoint to an open interface - cancelling transfer"); - return LIBUSB_ERROR_NOT_FOUND; - } - - CHECK_SUPPORTED_API(priv->usb_interface[current_interface].apib, submit_iso_transfer); - - return priv->usb_interface[current_interface].apib-> - submit_iso_transfer(priv->usb_interface[current_interface].sub_api, itransfer); -} - -static int composite_clear_halt(int sub_api, struct libusb_device_handle *dev_handle, unsigned char endpoint) -{ - struct winusb_device_handle_priv *handle_priv = get_winusb_device_handle_priv(dev_handle); - struct winusb_device_priv *priv = usbi_get_device_priv(dev_handle->dev); - int current_interface; - - UNUSED(sub_api); - - current_interface = interface_by_endpoint(priv, handle_priv, endpoint); - if (current_interface < 0) { - usbi_err(HANDLE_CTX(dev_handle), "unable to match endpoint to an open interface - cannot clear"); - return LIBUSB_ERROR_NOT_FOUND; - } - - CHECK_SUPPORTED_API(priv->usb_interface[current_interface].apib, clear_halt); - - return priv->usb_interface[current_interface].apib-> - clear_halt(priv->usb_interface[current_interface].sub_api, dev_handle, endpoint); -} - -static int composite_cancel_transfer(int sub_api, struct usbi_transfer *itransfer) -{ - struct libusb_transfer *transfer = USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer); - struct winusb_transfer_priv *transfer_priv = get_winusb_transfer_priv(itransfer); - struct winusb_device_priv *priv = usbi_get_device_priv(transfer->dev_handle->dev); - int current_interface = transfer_priv->interface_number; - - UNUSED(sub_api); - - if ((current_interface < 0) || (current_interface >= USB_MAXINTERFACES)) { - usbi_err(TRANSFER_CTX(transfer), "program assertion failed - invalid interface_number"); - return LIBUSB_ERROR_NOT_FOUND; - } - - CHECK_SUPPORTED_API(priv->usb_interface[current_interface].apib, cancel_transfer); - - return priv->usb_interface[current_interface].apib-> - cancel_transfer(priv->usb_interface[current_interface].sub_api, itransfer); -} - -static int composite_reset_device(int sub_api, struct libusb_device_handle *dev_handle) -{ - struct winusb_device_priv *priv = usbi_get_device_priv(dev_handle->dev); - int i, r; - bool available[SUB_API_MAX]; - - UNUSED(sub_api); - - for (i = 0; i < SUB_API_MAX; i++) - available[i] = false; - - for (i = 0; i < USB_MAXINTERFACES; i++) { - if ((priv->usb_interface[i].apib->id == USB_API_WINUSBX) - && (priv->usb_interface[i].sub_api != SUB_API_NOTSET)) - available[priv->usb_interface[i].sub_api] = true; - } - - for (i = 0; i < SUB_API_MAX; i++) { - if (available[i]) { - r = usb_api_backend[USB_API_WINUSBX].reset_device(i, dev_handle); - if (r != LIBUSB_SUCCESS) - return r; - } - } - - return LIBUSB_SUCCESS; -} - -static enum libusb_transfer_status composite_copy_transfer_data(int sub_api, struct usbi_transfer *itransfer, DWORD length) -{ - struct libusb_transfer *transfer = USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer); - struct winusb_transfer_priv *transfer_priv = get_winusb_transfer_priv(itransfer); - struct winusb_device_priv *priv = usbi_get_device_priv(transfer->dev_handle->dev); - int current_interface = transfer_priv->interface_number; - - UNUSED(sub_api); - if (priv->usb_interface[current_interface].apib->copy_transfer_data == NULL) { - usbi_err(TRANSFER_CTX(transfer), "program assertion failed - no function to copy transfer data"); - return LIBUSB_TRANSFER_ERROR; - } - - return priv->usb_interface[current_interface].apib-> - copy_transfer_data(priv->usb_interface[current_interface].sub_api, itransfer, length); -} -- cgit v1.2.3