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/*
Copyright (C) 2014-2015 Red Hat, Inc.
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, see <http://www.gnu.org/licenses/>.
Authors:
Dmitry Fleytman <dmitry@daynix.com>
Kirill Moizik <kirill@daynix.com>
*/
#include <config.h>
#include <windows.h>
#include <glib-object.h>
#include "usbdk_api.h"
#include "channel-usbredir-priv.h"
#define USB_DK_HIDE_RULE_MATCH_ALL ((ULONG64)(-1))
typedef struct tag_USB_DK_HIDE_RULE
{
ULONG64 Hide;
ULONG64 Class;
ULONG64 VID;
ULONG64 PID;
ULONG64 BCD;
} USB_DK_HIDE_RULE, *PUSB_DK_HIDE_RULE;
typedef HANDLE(__cdecl *USBDK_CREATEHIDERHANDLE)(void);
typedef BOOL(__cdecl * USBDK_ADDHIDERULE)(HANDLE hider_handle, PUSB_DK_HIDE_RULE rule);
typedef BOOL(__cdecl *USBDK_CLEARHIDERULES)(HANDLE hider_handle);
typedef void(__cdecl *USBDK_CLOSEHIDERHANDLE)(HANDLE hider_handle);
struct tag_usbdk_api_wrapper
{
HMODULE module;
USBDK_CREATEHIDERHANDLE CreateHiderHandle;
USBDK_ADDHIDERULE AddRule;
USBDK_CLEARHIDERULES ClearRules;
USBDK_CLOSEHIDERHANDLE CloseHiderHandle;
};
BOOL usbdk_is_driver_installed(void)
{
gboolean usbdk_installed = FALSE;
SC_HANDLE managerHandle = OpenSCManager(NULL, NULL, SC_MANAGER_CONNECT);
if (managerHandle) {
SC_HANDLE serviceHandle = OpenService(managerHandle, TEXT("UsbDk"), GENERIC_READ);
if (serviceHandle) {
SPICE_DEBUG("UsbDk driver is installed.");
usbdk_installed = TRUE;
CloseServiceHandle(serviceHandle);
}
CloseServiceHandle(managerHandle);
}
return usbdk_installed;
}
void usbdk_api_unload(usbdk_api_wrapper *usbdk_api)
{
if (usbdk_api != NULL) {
if (usbdk_api->module != NULL) {
SPICE_DEBUG("Unloading UsbDk API DLL");
FreeLibrary(usbdk_api->module);
}
g_free(usbdk_api);
}
}
usbdk_api_wrapper *usbdk_api_load(void)
{
usbdk_api_wrapper *usbdk_api = g_new0(usbdk_api_wrapper, 1);
SPICE_DEBUG("Loading UsbDk API DLL");
usbdk_api->module = LoadLibraryA("UsbDkHelper");
if (usbdk_api->module == NULL) {
g_warning("Failed to load UsbDkHelper.dll, error %lu", GetLastError());
goto error_unload;
}
usbdk_api->CreateHiderHandle = (USBDK_CREATEHIDERHANDLE)
GetProcAddress(usbdk_api->module, "UsbDk_CreateHiderHandle");
if (usbdk_api->CreateHiderHandle == NULL) {
g_warning("Failed to find CreateHandle entry point");
goto error_unload;
}
usbdk_api->AddRule = (USBDK_ADDHIDERULE)
GetProcAddress(usbdk_api->module, "UsbDk_AddHideRule");
if (usbdk_api->AddRule == NULL) {
g_warning("Failed to find AddRule entry point");
goto error_unload;
}
usbdk_api->ClearRules = (USBDK_CLEARHIDERULES)
GetProcAddress(usbdk_api->module, "UsbDk_ClearHideRules");
if (usbdk_api->ClearRules == NULL) {
g_warning("Failed to find ClearRules entry point");
goto error_unload;
}
usbdk_api->CloseHiderHandle = (USBDK_CLOSEHIDERHANDLE)
GetProcAddress(usbdk_api->module, "UsbDk_CloseHiderHandle");
if (usbdk_api->CloseHiderHandle == NULL) {
g_warning("Failed to find CloseHiderHandle entry point");
goto error_unload;
}
return usbdk_api;
error_unload:
usbdk_api_unload(usbdk_api);
return NULL;
}
static uint64_t usbdk_usbredir_field_to_usbdk(int value)
{
if (value >= 0) {
return value;
}
g_warn_if_fail(value == -1);
return USB_DK_HIDE_RULE_MATCH_ALL;
}
static BOOL usbdk_add_hide_rule(usbdk_api_wrapper *usbdk_api,
HANDLE hider_handle,
PUSB_DK_HIDE_RULE rule)
{
return usbdk_api->AddRule(hider_handle, rule);
}
void usbdk_api_set_hide_rules(usbdk_api_wrapper *usbdk_api, HANDLE hider_handle,
gchar *redirect_on_connect)
{
struct usbredirfilter_rule *rules;
int r, count;
r = usbredirfilter_string_to_rules(redirect_on_connect, ",", "|",
&rules, &count);
if (r) {
g_warning("auto-connect rules parsing failed with error %d", r);
return;
}
for (int i = 0; i < count; i++) {
USB_DK_HIDE_RULE rule;
rule.Hide = usbdk_usbredir_field_to_usbdk(rules[i].allow);
rule.Class = usbdk_usbredir_field_to_usbdk(rules[i].device_class);
rule.VID = usbdk_usbredir_field_to_usbdk(rules[i].vendor_id);
rule.PID = usbdk_usbredir_field_to_usbdk(rules[i].product_id);
rule.BCD = usbdk_usbredir_field_to_usbdk(rules[i].device_version_bcd);
if (!usbdk_add_hide_rule(usbdk_api, hider_handle, &rule)) {
SPICE_DEBUG("UsbDk add hide rule API failed");
}
}
free(rules);
}
HANDLE usbdk_create_hider_handle(usbdk_api_wrapper *usbdk_api)
{
HANDLE handle = usbdk_api->CreateHiderHandle();
return (handle == INVALID_HANDLE_VALUE) ? NULL : handle;
}
BOOL usbdk_clear_hide_rules(usbdk_api_wrapper *usbdk_api, HANDLE hider_handle)
{
return usbdk_api->ClearRules(hider_handle);
}
void usbdk_close_hider_handle(usbdk_api_wrapper *usbdk_api, HANDLE hider_handle)
{
return usbdk_api->CloseHiderHandle(hider_handle);
}
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