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mirror of https://github.com/SoftEtherVPN/SoftEtherVPN.git synced 2024-09-19 10:10:40 +03:00
SoftEtherVPN/src/Cedar/SWInner.h
2014-01-04 22:00:08 +09:00

426 lines
19 KiB
C

// SoftEther VPN Source Code
// Cedar Communication Module
//
// SoftEther VPN Server, Client and Bridge are free software under GPLv2.
//
// Copyright (c) 2012-2014 Daiyuu Nobori.
// Copyright (c) 2012-2014 SoftEther VPN Project, University of Tsukuba, Japan.
// Copyright (c) 2012-2014 SoftEther Corporation.
//
// All Rights Reserved.
//
// http://www.softether.org/
//
// Author: Daiyuu Nobori
// Comments: Tetsuo Sugiyama, Ph.D.
//
//
// This program is free software; you can redistribute it and/or
// modify it under the terms of the GNU General Public License
// version 2 as published by the Free Software Foundation.
//
// This program 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 General Public License for more details.
//
// You should have received a copy of the GNU General Public License version 2
// along with this program; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
// IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
// CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
// TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
// SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//
// THE LICENSE AGREEMENT IS ATTACHED ON THE SOURCE-CODE PACKAGE
// AS "LICENSE.TXT" FILE. READ THE TEXT FILE IN ADVANCE TO USE THE SOFTWARE.
//
//
// THIS SOFTWARE IS DEVELOPED IN JAPAN, AND DISTRIBUTED FROM JAPAN,
// UNDER JAPANESE LAWS. YOU MUST AGREE IN ADVANCE TO USE, COPY, MODIFY,
// MERGE, PUBLISH, DISTRIBUTE, SUBLICENSE, AND/OR SELL COPIES OF THIS
// SOFTWARE, THAT ANY JURIDICAL DISPUTES WHICH ARE CONCERNED TO THIS
// SOFTWARE OR ITS CONTENTS, AGAINST US (SOFTETHER PROJECT, SOFTETHER
// CORPORATION, DAIYUU NOBORI OR OTHER SUPPLIERS), OR ANY JURIDICAL
// DISPUTES AGAINST US WHICH ARE CAUSED BY ANY KIND OF USING, COPYING,
// MODIFYING, MERGING, PUBLISHING, DISTRIBUTING, SUBLICENSING, AND/OR
// SELLING COPIES OF THIS SOFTWARE SHALL BE REGARDED AS BE CONSTRUED AND
// CONTROLLED BY JAPANESE LAWS, AND YOU MUST FURTHER CONSENT TO
// EXCLUSIVE JURISDICTION AND VENUE IN THE COURTS SITTING IN TOKYO,
// JAPAN. YOU MUST WAIVE ALL DEFENSES OF LACK OF PERSONAL JURISDICTION
// AND FORUM NON CONVENIENS. PROCESS MAY BE SERVED ON EITHER PARTY IN
// THE MANNER AUTHORIZED BY APPLICABLE LAW OR COURT RULE.
//
// USE ONLY IN JAPAN. DO NOT USE IT IN OTHER COUNTRIES. IMPORTING THIS
// SOFTWARE INTO OTHER COUNTRIES IS AT YOUR OWN RISK. SOME COUNTRIES
// PROHIBIT ENCRYPTED COMMUNICATIONS. USING THIS SOFTWARE IN OTHER
// COUNTRIES MIGHT BE RESTRICTED.
//
//
// DEAR SECURITY EXPERTS
// ---------------------
//
// If you find a bug or a security vulnerability please kindly inform us
// about the problem immediately so that we can fix the security problem
// to protect a lot of users around the world as soon as possible.
//
// Our e-mail address for security reports is:
// softether-vpn-security [at] softether.org
//
// Please note that the above e-mail address is not a technical support
// inquiry address. If you need technical assistance, please visit
// http://www.softether.org/ and ask your question on the users forum.
//
// Thank you for your cooperation.
// SWInner.h
// Header of SW.c (for internal use)
#ifndef SW_INNER_H
#define SW_INNER_H
// Component string
#define SW_NAME_VPNSERVER "vpnserver"
#define SW_LONG_VPNSERVER _UU("SW_LONG_VPNSERVER")
#define SW_NAME_VPNCLIENT "vpnclient"
#define SW_LONG_VPNCLIENT _UU("SW_LONG_VPNCLIENT")
#define SW_NAME_VPNBRIDGE "vpnbridge"
#define SW_LONG_VPNBRIDGE _UU("SW_LONG_VPNBRIDGE")
#define SW_NAME_VPNSMGR "vpnsmgr"
#define SW_LONG_VPNSMGR _UU("SW_LONG_VPNSMGR")
#define SW_NAME_VPNCMGR "vpncmgr"
#define SW_LONG_VPNCMGR _UU("SW_LONG_VPNCMGR")
#define SW_VPN_CLIENT_UIHELPER_REGVALUE GC_SW_UIHELPER_REGVALUE
#define SW_VPN_CLIENT_EXT_REGKEY "SOFTWARE\\Classes\\.vpn"
#define SW_VPN_CLIENT_EXT_REGVALUE "vpnfile"
#define SW_VPN_CLIENT_EXT_REGKEY_SUB1 "SOFTWARE\\Classes\\.vpn\\vpnfile"
#define SW_VPN_CLIENT_EXT_REGKEY_SUB2 "SOFTWARE\\Classes\\.vpn\\vpnfile\\ShellNew"
#define SW_VPN_CLIENT_VPNFILE_REGKEY "SOFTWARE\\Classes\\vpnfile"
#define SW_VPN_CLIENT_VPNFILE_REGVALUE "VPN Client Connection Setting File"
#define SW_VPN_CLIENT_VPNFILE_ICON_REGKEY "SOFTWARE\\Classes\\vpnfile\\DefaultIcon"
#define SW_VPN_CLIENT_VPNFILE_SHELLOPEN_CMD_REGKEY "SOFTWARE\\Classes\\vpnfile\\shell\\open\\command"
#define SW_VPN_CLIENT_VPNFILE_SHELLOPEN_CMD_REGKEY_SUB1 "SOFTWARE\\Classes\\vpnfile\\shell\\open"
#define SW_VPN_CLIENT_VPNFILE_SHELLOPEN_CMD_REGKEY_SUB2 "SOFTWARE\\Classes\\vpnfile\\shell"
#define SW_REG_KEY_EULA "Software\\" GC_REG_COMPANY_NAME "\\Setup Wizard Settings\\Eula"
// Component ID
#define SW_CMP_VPN_SERVER 1 // VPN Server
#define SW_CMP_VPN_CLIENT 2 // VPN Client
#define SW_CMP_VPN_BRIDGE 3 // VPN Bridge
#define SW_CMP_VPN_SMGR 4 // VPN Server Manager (Tools Only)
#define SW_CMP_VPN_CMGR 5 // VPN Client Manager (Tools Only)
// Exit code
#define SW_EXIT_CODE_USER_CANCEL 1000000001 // Cancel by the user
#define SW_EXIT_CODE_INTERNAL_ERROR 1000000002 // Internal error
// Special messages to be used in the setup wizard
#define WM_SW_BASE (WM_APP + 251)
#define WM_SW_INTERACT_UI (WM_SW_BASE + 0) // UI processing
#define WM_SW_EXIT (WM_SW_BASE + 1) // Close
// Automatic connection setting file
#define SW_AUTO_CONNECT_ACCOUNT_FILE_NAME "auto_connect.vpn"
#define SW_AUTO_CONNECT_ACCOUNT_FILE_NAME_W L"auto_connect.vpn"
// Installer cache file to be stored in the VPN Client installation folder
#define SW_SFX_CACHE_FILENAME L"installer.cache"
// Flag file
#define SW_FLAG_EASY_MODE "easy_mode.flag"
#define SW_FLAG_EASY_MODE_2 "@easy_mode.flag"
// Multiple-starts prevention name
#define SW_SINGLE_INSTANCE_NAME "SoftEther_VPN_Setup_Wizard"
// Time to wait for the VPN Client service startup
#define SW_VPNCLIENT_SERVICE_WAIT_READY_TIMEOUT (30 * 1000)
// UI interaction
typedef struct SW_UI
{
UINT Type; // Type
wchar_t *Message; // Message string
UINT Param; // Parameters
UINT RetCode; // Return value
} SW_UI;
// Type of UI interaction
#define SW_UI_TYPE_PRINT 0 // Display the message
#define SW_UI_TYPE_MSGBOX 1 // Show a message box
#define SW_UI_TYPE_FINISH 2 // Completion
#define SW_UI_TYPE_ERROR 3 // Error
// Resource type of the file stored in the setup.exe
#define SW_SFX_RESOURCE_TYPE "DATAFILE"
// Code of old MSI
typedef struct SW_OLD_MSI
{
char *ProductCode; // Product code
char *ComponentCode; // Component code
} SW_OLD_MSI;
// Component
typedef struct SW_COMPONENT
{
UINT Id; // ID
bool Detected; // Whether it has been detected as an installation source
LIST *NeedFiles; // Necessary files
char *Name; // Internal name
char *SvcName; // Service name
wchar_t *Title; // Display name
wchar_t *Description; // Detail
wchar_t *DefaultDirName; // Installation directory name of the default
wchar_t *LongName; // Long name
UINT Icon; // Icon
UINT IconExeIndex; // The index number of the icon within the Setup.exe
bool SystemModeOnly; // Only system mode
bool InstallService; // Installation of service
wchar_t *SvcFileName; // Service file name
wchar_t *StartExeName; // Start EXE file name
wchar_t *StartDescription; // Description of the running software
SW_OLD_MSI *OldMsiList; // Old MSI Product List
UINT NumOldMsi; // The number of old MSI Product List
bool CopyVGDat; // Copy of the VPN Gate DAT file
} SW_COMPONENT;
// File copy task
typedef struct SW_TASK_COPY
{
wchar_t SrcFileName[MAX_SIZE]; // Original file name
wchar_t DstFileName[MAX_SIZE]; // Destination file name
wchar_t SrcDir[MAX_SIZE]; // Source directory
wchar_t DstDir[MAX_SIZE]; // Destination directory
bool Overwrite; // Override flag
bool SetupFile; // Setup file flag
} SW_TASK_COPY;
// Link creation task
typedef struct SW_TASK_LINK
{
wchar_t TargetDir[MAX_SIZE]; // Target directory
wchar_t TargetExe[MAX_SIZE]; // Target EXE file name
wchar_t TargetArg[MAX_SIZE]; // Arguments to pass to the target
wchar_t IconExe[MAX_SIZE]; // Icon EXE file name
UINT IconIndex; // Icon Index number
wchar_t DestDir[MAX_SIZE]; // Directory name to be created
wchar_t DestName[MAX_SIZE]; // File name to be created
wchar_t DestDescription[MAX_SIZE]; // Description string
bool NoDeleteDir; // Do not delete the directory on uninstall
} SW_TASK_LINK;
// Setup Tasks
typedef struct SW_TASK
{
LIST *CopyTasks; // File copy task
LIST *SetSecurityPaths; // List of paths to set the security
LIST *LinkTasks; // Link creation task
} SW_TASK;
// Setup log
typedef struct SW_LOG
{
UINT Type; // Type of log
wchar_t Path[MAX_PATH]; // Path
} SW_LOG;
// Type of setup log
#define SW_LOG_TYPE_FILE 1 // File
#define SW_LOG_TYPE_DIR 2 // Directory
#define SW_LOG_TYPE_REGISTRY 3 // Registry
#define SW_LOG_TYPE_LNK 4 // Shortcut file
#define SW_LOG_TYPE_LNK_DIR 5 // Shortcut directory
#define SW_LOG_TYPE_SVC 6 // Service
// Setup log files
typedef struct SW_LOGFILE
{
LIST *LogList; // List of log
bool IsSystemMode; // Whether the system mode
UINT Build; // Build Number
SW_COMPONENT *Component; // Component
} SW_LOGFILE;
// SFX file
typedef struct SW_SFX_FILE
{
char InnerFileName[MAX_PATH]; // Internal file name
wchar_t DiskFileName[MAX_PATH]; // File name of the disk
} SW_SFX_FILE;
// SW instance
typedef struct SW
{
LIST *ComponentList; // List of components
wchar_t InstallSrc[MAX_SIZE]; // Source directory
bool IsSystemMode; // Whether the system mode
bool UninstallMode; // Uninstall mode
UINT ExitCode; // Exit code
void *ReExecProcessHandle; // Child process handle of a result of the re-run itself
bool IsReExecForUac; // Whether the process was re-run for UAC handling
SW_COMPONENT *CurrentComponent; // Component that is currently selected
bool EulaAgreed; // Whether the user accepted the license agreement
bool DoubleClickBlocker; // Double-click blocker
bool LanguageMode; // Language setting mode
UINT LangId; // Language ID in the language setting mode
bool SetLangAndReboot; // Prompt to restart after making the language setting
bool LangNow; // Start the language setting process right now
bool EasyMode; // Simple installer creation mode
bool WebMode; // Web installer creation mode
bool OnlyAutoSettingMode; // Apply only mode of connection settings of VPN Client
INSTANCE *Single; // Multiple-starts check
wchar_t DefaultInstallDir_System[MAX_PATH]; // Default system installation directory
wchar_t DefaultInstallDir_User[MAX_PATH]; // Default user installation directory
bool IsAvailableSystemMode; // Whether the system mode is selectable
bool IsAvailableUserMode; // Whether the user mode is selectable
bool ShowWarningForUserMode; // Whether to display a warning for the user-mode
wchar_t InstallDir[MAX_PATH]; // Destination directory
THREAD *PerformThread; // Set up processing thread
bool Run; // Whether to start the tool after Setup finishes
SW_LOGFILE *LogFile; // Log file
bool MsiRebootRequired; // Need to be re-started as a result of MSI
bool LangNotChanged; // Language has not changed
wchar_t FinishMsg[MAX_SIZE * 2]; // Completion message
wchar_t Easy_SettingFile[MAX_PATH]; // Connection settings file name of the Simple installer creation kit:
wchar_t Easy_OutFile[MAX_PATH]; // Destination file name of the simple installer creation kit
bool Easy_EraseSensitive; // Simple installer creation kit: Delete the confidential information
bool Easy_EasyMode; // Simple installer creation kit: simple mode
wchar_t Web_SettingFile[MAX_PATH]; // Connection setting file name for the Web installer creation Kit
wchar_t Web_OutFile[MAX_PATH]; // Destination file name of the Web installer creation Kit
bool Web_EraseSensitive; // Web installer creation Kit: removing confidential information
bool Web_EasyMode; // Web installer creation kit: simple mode
wchar_t vpncmgr_path[MAX_PATH]; // Path of vpncmgr.exe
wchar_t auto_setting_path[MAX_PATH]; // Path of automatic connection setting
bool HideStartCommand; // Not to show the option to start the program on installation complete screen
char SfxMode[MAX_SIZE]; // SFX generation mode
wchar_t SfxOut[MAX_PATH]; // SFX destination
wchar_t CallerSfxPath[MAX_PATH]; // Calling SFX path
bool IsEasyInstaller; // Whether the calling SFX was built by the simple installer creation kit
bool IsWebInstaller; // Whether Web installer
bool DisableAutoImport; // Not to use the automatic import process
UINT CurrentEulaHash; // Hash of the license agreement
} SW;
// Function prototype
SW *NewSw();
UINT FreeSw(SW *sw);
void SwDefineComponents(SW *sw);
SW_COMPONENT *SwNewComponent(char *name, char *svc_name, UINT id, UINT icon, UINT icon_index, wchar_t *svc_filename,
wchar_t *long_name, bool system_mode_only, UINT num_files, char *files[],
wchar_t *start_exe_name, wchar_t *start_description,
SW_OLD_MSI *old_msis, UINT num_old_msis);
void SwFreeComponent(SW_COMPONENT *c);
void SwDetectComponents(SW *sw);
bool SwIsComponentDetected(SW *sw, SW_COMPONENT *c);
void SwParseCommandLine(SW *sw);
SW_COMPONENT *SwFindComponent(SW *sw, char *name);
void SwInitDefaultInstallDir(SW *sw);
void SwUiMain(SW *sw);
bool SwCheckNewDirName(wchar_t *name);
wchar_t *SwGetOldMsiInstalledDir(SW_COMPONENT *c);
bool SwUninstallOldMsiInstalled(HWND hWnd, WIZARD_PAGE *wp, SW_COMPONENT *c, bool *reboot_required);
bool SwReExecMyself(SW *sw, wchar_t *additional_params, bool as_admin);
SW_TASK *SwNewTask();
void SwFreeTask(SW_TASK *t);
SW_TASK_COPY *SwNewCopyTask(wchar_t *srcfilename, wchar_t *dstfilename, wchar_t *srcdir, wchar_t *dstdir, bool overwrite, bool setup_file);
void SwFreeCopyTask(SW_TASK_COPY *ct);
void SwDefineTasks(SW *sw, SW_TASK *t, SW_COMPONENT *c);
SW_TASK_LINK *SwNewLinkTask(wchar_t *target_dir, wchar_t *target_exe, wchar_t *target_arg,
wchar_t *icon_exe, UINT icon_index,
wchar_t *dest_dir, wchar_t *dest_name, wchar_t *dest_desc,
bool no_delete_dir);
void SwFreeLinkTask(SW_TASK_LINK *lt);
void SwAddLog(SW *sw, SW_LOGFILE *logfile, UINT type, wchar_t *path);
void SwAddLogA(SW *sw, SW_LOGFILE *logfile, UINT type, char *path);
bool SwSaveLogFile(SW *sw, wchar_t *dst_name, SW_LOGFILE *logfile);
SW_LOGFILE *SwLoadLogFile(SW *sw, wchar_t *filename);
SW_LOGFILE *SwNewLogFile();
void SwFreeLogFile(SW_LOGFILE *logfile);
void SwInstallShortcuts(SW *sw, WIZARD_PAGE *wp, SW_COMPONENT *c, SW_TASK *t);
void SwDeleteShortcuts(SW_LOGFILE *logfile);
bool SwCheckOs(SW *sw, SW_COMPONENT *c);
bool SwEnterSingle(SW *sw);
void SwLeaveSingle(SW *sw);
UINT SwWelcomeDlg(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam, WIZARD *wizard, WIZARD_PAGE *wizard_page, void *param);
UINT SwModeDlg(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam, WIZARD *wizard, WIZARD_PAGE *wizard_page, void *param);
UINT SwNotAdminDlg(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam, WIZARD *wizard, WIZARD_PAGE *wizard_page, void *param);
UINT SwComponents(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam, WIZARD *wizard, WIZARD_PAGE *wizard_page, void *param);
void SwComponentsInit(HWND hWnd, SW *sw);
void SwComponentsUpdate(HWND hWnd, SW *sw, WIZARD *wizard, WIZARD_PAGE *wizard_page);
UINT SwEula(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam, WIZARD *wizard, WIZARD_PAGE *wizard_page, void *param);
void SwEulaUpdate(HWND hWnd, SW *sw, WIZARD *wizard, WIZARD_PAGE *wizard_page);
UINT SwDir(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam, WIZARD *wizard, WIZARD_PAGE *wizard_page, void *param);
void SwDirUpdate(HWND hWnd, SW *sw, WIZARD_PAGE *wizard_page);
UINT SwReady(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam, WIZARD *wizard, WIZARD_PAGE *wizard_page, void *param);
UINT SwPerform(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam, WIZARD *wizard, WIZARD_PAGE *wizard_page, void *param);
void SwPerformInit(HWND hWnd, SW *sw, WIZARD_PAGE *wp);
void SwPerformThread(THREAD *thread, void *param);
void SwPerformPrint(WIZARD_PAGE *wp, wchar_t *str);
UINT SwPerformMsgBox(WIZARD_PAGE *wp, UINT flags, wchar_t *msg);
UINT SwInteractUi(WIZARD_PAGE *wp, SW_UI *ui);
void SwInteractUiCalled(HWND hWnd, SW *sw, WIZARD_PAGE *wp, SW_UI *ui);
bool SwInstallMain(SW *sw, WIZARD_PAGE *wp, SW_COMPONENT *c);
UINT SwError(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam, WIZARD *wizard, WIZARD_PAGE *wizard_page, void *param);
UINT SwFinish(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam, WIZARD *wizard, WIZARD_PAGE *wizard_page, void *param);
UINT SwUninst1(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam, WIZARD *wizard, WIZARD_PAGE *wizard_page, void *param);
bool SwUninstallMain(SW *sw, WIZARD_PAGE *wp, SW_COMPONENT *c);
UINT SwLang1(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam, WIZARD *wizard, WIZARD_PAGE *wizard_page, void *param);
void SwLang1Init(HWND hWnd, SW *sw);
UINT SwGetLangIcon(char *name);
void SwLang1Update(HWND hWnd, SW *sw, WIZARD *wizard, WIZARD_PAGE *wizard_page);
UINT SwEasy1(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam, WIZARD *wizard, WIZARD_PAGE *wizard_page, void *param);
UINT SwEasy2(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam, WIZARD *wizard, WIZARD_PAGE *wizard_page, void *param);
void SwEasy2Update(HWND hWnd, SW *sw, WIZARD *wizard, WIZARD_PAGE *wizard_page);
bool SwEasyMain(SW *sw, WIZARD_PAGE *wp);
UINT SwWeb1(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam, WIZARD *wizard, WIZARD_PAGE *wizard_page, void *param);
UINT SwWeb2(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam, WIZARD *wizard, WIZARD_PAGE *wizard_page, void *param);
void SwWeb2Update(HWND hWnd, SW *sw, WIZARD *wizard, WIZARD_PAGE *wizard_page);
bool SwWebMain(SW *sw, WIZARD_PAGE *wp);
void SwGenerateDefaultSfxFileName(wchar_t *name, UINT size);
void SwGenerateDefaultZipFileName(wchar_t *name, UINT size);
bool CALLBACK SwEnumResourceNamesProc(HMODULE hModule, const char *type, char *name, LONG_PTR lParam);
UINT SwSfxModeMain();
bool CALLBACK SfxModeMainDialogProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam);
bool SwSfxExtractProcess(HWND hWnd, bool *hide_error_msg);
bool SwSfxExtractFile(HWND hWnd, void *data, UINT size, wchar_t *dst, bool compressed);
SW_SFX_FILE *SwNewSfxFile(char *inner_file_name, wchar_t *disk_file_name);
bool SwSfxCopyVgFiles(HWND hWnd, wchar_t *src, wchar_t *dst);
#endif // SW_INNER_H
// Developed by SoftEther VPN Project at University of Tsukuba in Japan.
// Department of Computer Science has dozens of overly-enthusiastic geeks.
// Join us: http://www.tsukuba.ac.jp/english/admission/