[PATCH v3 3/7] UsbDk: Add UsbDk wrapper

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From: Kirill Moizik <kirillm@xxxxxxxxxx>

Introduce UsbDk API definitions and binding code.

Signed-off-by: Kirill Moizik <kirillm@xxxxxxxxxx>
---
 src/Makefile.am |   2 +
 src/usbdk_api.c | 163 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 src/usbdk_api.h |  34 ++++++++++++
 3 files changed, 199 insertions(+)
 create mode 100644 src/usbdk_api.c
 create mode 100644 src/usbdk_api.h

diff --git a/src/Makefile.am b/src/Makefile.am
index 25e2255..655357a 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -367,6 +367,8 @@ WIN_USB_FILES= \
 	win-usb-clerk.h			\
 	win-usb-driver-install.h	\
 	win-usb-driver-install.c	\
+	usbdk_api.h			\
+	usbdk_api.c			\
 	$(NULL)
 
 if OS_WIN32
diff --git a/src/usbdk_api.c b/src/usbdk_api.c
new file mode 100644
index 0000000..e189a01
--- /dev/null
+++ b/src/usbdk_api.c
@@ -0,0 +1,163 @@
+/* -*- Mode: C; c-basic-offset: 4; indent-tabs-mode: nil -*- */
+/*
+   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@xxxxxxxxxx>
+    Kirill Moizik <kirill@xxxxxxxxxx>
+*/
+#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                 CreateHandle;
+    USBDK_ADDHIDERULE                       AddRule;
+    USBDK_CLEARHIDERULES                    ClearRules;
+    USBDK_CLOSEHIDERHANDLE                  CloseHiderHandle;
+};
+
+BOOL usbdk_add_hide_rule(usbdk_api_wrapper *usbdk_api, HANDLE hider_handle, PUSB_DK_HIDE_RULE rule);
+
+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) {
+    SPICE_DEBUG("Unloading UsbDk API DLL");
+    FreeLibrary(usbdk_api->module);
+    g_free(usbdk_api);
+}
+
+int usbdk_api_load(usbdk_api_wrapper **usbdk_api) {
+    SPICE_DEBUG("Loading UsbDk API DLL");
+
+    *usbdk_api = g_new0(usbdk_api_wrapper, 1);
+    (*usbdk_api)->module = LoadLibraryA("UsbDkHelper");
+    if ((*usbdk_api)->module == NULL) {
+        DWORD err = GetLastError();
+        usbdk_api_unload(*usbdk_api);
+        SPICE_DEBUG("Failed to load UsbDkHelper.dll, error %lu", err);
+        return -1 ;
+    }
+
+    (*usbdk_api)->CreateHandle = (USBDK_CREATEHIDERHANDLE)
+        GetProcAddress((*usbdk_api)->module, "UsbDk_CreateHiderHandle");
+    if ((*usbdk_api)->CreateHandle == 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 0;
+
+error_unload:
+    usbdk_api_unload(*usbdk_api);
+    return -1;
+}
+
+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  = (rules[i].allow                == -1) ? USB_DK_HIDE_RULE_MATCH_ALL : (uint64_t)rules[i].allow;
+        rule.Class = (rules[i].device_class         == -1) ? USB_DK_HIDE_RULE_MATCH_ALL : (uint64_t)rules[i].device_class;
+        rule.VID   = (rules[i].vendor_id            == -1) ? USB_DK_HIDE_RULE_MATCH_ALL : (uint64_t)rules[i].vendor_id;
+        rule.PID   = (rules[i].product_id           == -1) ? USB_DK_HIDE_RULE_MATCH_ALL : (uint64_t)rules[i].product_id;
+        rule.BCD   = (rules[i].device_version_bcd   == -1) ? USB_DK_HIDE_RULE_MATCH_ALL : (uint64_t)rules[i].device_version_bcd;
+        if (usbdk_add_hide_rule(usbdk_api, hider_handle, &rule)) {
+            SPICE_DEBUG("UsbDk set hide rule API failed");
+        }
+    }
+
+    free(rules);
+}
+
+HANDLE usbdk_create_hider_handle(usbdk_api_wrapper *usbdk_api){
+    return usbdk_api->CreateHandle();
+}
+
+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);
+}
+
+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);
+}
diff --git a/src/usbdk_api.h b/src/usbdk_api.h
new file mode 100644
index 0000000..bc6098d
--- /dev/null
+++ b/src/usbdk_api.h
@@ -0,0 +1,34 @@
+/* -*- Mode: C; c-basic-offset: 4; indent-tabs-mode: nil -*- */
+/*
+   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@xxxxxxxxxx>
+    Kirill Moizik <kirill@xxxxxxxxxx>
+*/
+#ifndef USBDK_HEADER
+#define USBDK_HEADER
+
+typedef struct tag_usbdk_api_wrapper usbdk_api_wrapper;
+
+BOOL     usbdk_is_driver_installed(void);
+HANDLE   usbdk_create_hider_handle(usbdk_api_wrapper *usbdk_api);
+BOOL     usbdk_clear_hide_rules(usbdk_api_wrapper *usbdk_api, HANDLE hider_handle);
+void     usbdk_close_hider_handle(usbdk_api_wrapper *usbdk_api, HANDLE hider_handle);
+int      usbdk_api_load(usbdk_api_wrapper **usbdk_api);
+void     usbdk_api_unload(usbdk_api_wrapper *usbdk_api);
+void     usbdk_api_set_hide_rules(usbdk_api_wrapper *usbdk_api, HANDLE hider_handle, gchar *redirect_on_connect);
+#endif
-- 
2.1.0

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