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SoftEtherVPN/src/Mayaqua/Mayaqua.h

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2014-01-04 17:00:08 +04:00
// SoftEther VPN Source Code
// Mayaqua Kernel
//
// 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.
//
//
2014-01-15 13:01:42 +04:00
// SOURCE CODE CONTRIBUTION
// ------------------------
//
// Your contribution to SoftEther VPN Project is much appreciated.
// Please send patches to us through GitHub.
// Read the SoftEther VPN Patch Acceptance Policy in advance:
// http://www.softether.org/5-download/src/9.patch
//
//
2014-01-04 17:00:08 +04:00
// 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.
// Mayaqua.h
// Mayaqua Kernel header file
#ifndef MAYAQUA_H
#define MAYAQUA_H
// PenCore.dll related
#define PENCORE_DLL_NAME "|PenCore.dll"
// #define PENCORE_DLL_NAME_X64 "|PenCore_x64.dll" // commonized to x86
// #define PENCORE_DLL_NAME_IA64 "|PenCore_ia64.dll" // commonized to x86
//#define USE_PROBE // Use Probe
// Macro for the release flag
#ifdef VPN_SPEED
#define DONT_USE_KERNEL_STATUS // Do not update the kernel status
#define WIN32_USE_HEAP_API_FOR_MEMORY // Use the heap API to allocate memory
#define WIN32_NO_DEBUG_HELP_DLL // Do not call the DLL for debugging
#define DONT_CHECK_HEAP // Do not check the status of the heap
#define DONT_ALLOW_RUN_ON_DEBUGGER // Do not allow running on the debugger
#endif // VPN_SPEED
#ifdef VPN_EXE
// To build the executable file
#ifdef WIN32
#include <windows.h>
#include "../PenCore/resource.h"
int main(int argc, char *argv[]);
int PASCAL WinMain(HINSTANCE hInst, HINSTANCE hPrev, char *CmdLine, int CmdShow)
{
char *argv[] = { CmdLine, };
return main(1, argv);
}
#endif // WIN32
#endif // VPN_EXE
// Constant
#define DEFAULT_TABLE_FILE_NAME "|strtable.stb" // Default string table
//#define DEFAULT_TABLE_FILE_NAME "@hamcore_zh/strtable.stb" // Test for Chinese
#define STRTABLE_ID "SE_VPN_20121007" // String table identifier
// Determining the OS
#ifdef WIN32
#define OS_WIN32 // Microsoft Windows
#else
#define OS_UNIX // UNIX
#endif // WIN32
// Directory separator
#ifdef OS_WIN32
#define PATH_BACKSLASH // Backslash (\)
#else // WIN32
#define PATH_SLASH // Slash (/)
#endif // WIN32
// Character code
#ifdef OS_WIN32
#define CODE_SHIFTJIS // Shift_JIS code
#else // WIN32
#define CODE_EUC // euc-jp code
#endif // WIN32
// Endian
#define IsBigEndian() (g_little_endian ? false : true)
#define IsLittleEndian() (g_little_endian)
#ifdef OS_WIN32
// Replace the snprintf function
#define snprintf _snprintf
#endif // OS_WIN32
// Compiler dependent
#ifndef OS_WIN32
// Gcc compiler
#define GCC_PACKED __attribute__ ((__packed__))
#else // OS_WIN32
// VC++ compiler
#define GCC_PACKED
#endif // OS_WIN32
// Macro that displays the current file name and line number
#define WHERE if (IsDebug()){printf("%s: %u\n", __FILE__, __LINE__); SleepThread(10);}
#define WHERE32 if (IsDebug()){ \
char tmp[128]; sprintf(tmp, "%s: %u", __FILE__, __LINE__); Win32DebugAlert(tmp); \
}
#define TIMECHECK if (IsDebug()){printf("%-12s:%5u", __FILE__, __LINE__);TimeCheck();}
// Probe related
#ifdef USE_PROBE
#define PROBE_WHERE WriteProbe(__FILE__, __LINE__, "");
#define PROBE_STR(str) WriteProbe(__FILE__, __LINE__, (str));
#define PROBE_DATA2(str, data, size) WriteProbeData(__FILE__, __LINE__, (str), (data), (size));
#define PROBE_DATA(data, size) WriteProbeData(__FILE__, __LINE__, "", (data), (size));
#else // USE_PROBE
#define PROBE_WHERE
#define PROBE_STR(str)
#define PROBE_DATA2(str, data, size)
#define PROBE_DATA(data, size)
#endif // USE_PROBE
// About Intel AES-NI Library
#if (defined(OS_WIN32) || (defined(UNIX_LINUX) && (defined(CPU_X86) || defined(CPU_X64))))
// Supports only for Linux (x86 / x64) or Windows
#define USE_INTEL_AESNI_LIBRARY
#endif
// Macro that displays the current time
#ifdef WIN32
#define WHEN if (IsDebug()){WHERE; MsPrintTick();}
#else // WIN32
#define WHEN
#endif // WIN32
#ifdef OS_UNIX
#ifndef UNIX_SOLARIS
#ifndef CPU_SH4
// Getifaddrs system call is supported on UNIX other than Solaris.
// However, it is not supported also by the Linux on SH4 CPU
#define MAYAQUA_SUPPORTS_GETIFADDRS
#endif // CPU_SH4
#endif // UNIX_SOLARIS
#endif // OS_UNIX
#ifdef OS_UNIX
// Header only needed in UNIX OS
#include <sys/types.h>
#include <unistd.h>
#include <termios.h>
#include <dirent.h>
#ifdef UNIX_LINUX
#include <sys/vfs.h>
#elif UNIX_BSD
#include <sys/param.h>
#include <sys/mount.h>
#endif
#ifdef UNIX_SOLARIS
#include <sys/statvfs.h>
#define USE_STATVFS
#endif // UNIX_SOLARIS
#include <sys/stat.h>
#include <sys/file.h>
#include <sys/socket.h>
#include <sys/time.h>
#include <sys/resource.h>
#include <sys/wait.h>
#include <sys/ioctl.h>
#ifdef UNIX_SOLARIS
#include <sys/filio.h>
#endif // UNIX_SOLARIS
#include <sys/poll.h>
#include <sys/resource.h>
#include <pthread.h>
#ifdef UNIX_LINUX
#include <sys/prctl.h>
#endif // UNIX_LINUX
#include <signal.h>
#include <fcntl.h>
#include <netinet/in.h>
#include <netinet/tcp.h>
//#include <netinet/ip.h>
#include <netdb.h>
#include <net/if.h>
#include <net/if_arp.h>
#include <readline/readline.h>
#include <readline/history.h>
//#include <curses.h>
#ifdef MAYAQUA_SUPPORTS_GETIFADDRS
#include <ifaddrs.h>
#endif // MAYAQUA_SUPPORTS_GETIFADDRS
#ifdef UNIX_LINUX
typedef void *iconv_t;
iconv_t iconv_open (__const char *__tocode, __const char *__fromcode);
size_t iconv (iconv_t __cd, char **__restrict __inbuf,
size_t *__restrict __inbytesleft,
char **__restrict __outbuf,
size_t *__restrict __outbytesleft);
int iconv_close (iconv_t __cd);
#else // UNIX_LINUX
#include <iconv.h>
#endif // UNIX_LINUX
#ifdef UNIX_LINUX
#include <netinet/if_ether.h>
#include <net/ethernet.h>
#include <netpacket/packet.h>
#endif // UNIX_LINUX
#ifdef UNIX_SOLARIS
#include <sys/dlpi.h>
#include <sys/stropts.h>
#include <sys/stream.h>
#endif // UNIX_SOLARIS
#ifndef NO_VLAN
#include <Mayaqua/TunTap.h>
#endif // NO_VLAN
#define closesocket(s) close(s)
#else // Win32 only
#include <conio.h>
#endif // OS_UNIX
// IPv6 support flag
#ifndef WIN32
#ifndef AF_INET6
#define NO_IPV6
#endif // AF_INET6
#endif // WIN32
// Basic type declaration
#include <Mayaqua/MayaType.h>
// Object management
#include <Mayaqua/Object.h>
// Object tracking
#include <Mayaqua/Tracking.h>
// File I/O
#include <Mayaqua/FileIO.h>
// Memory management
#include <Mayaqua/Memory.h>
// String processing
#include <Mayaqua/Str.h>
// Internationalized string processing
#include <Mayaqua/Internat.h>
// Encryption processing
#include <Mayaqua/Encrypt.h>
// Secure token
#include <Mayaqua/Secure.h>
// Kernel
#include <Mayaqua/Kernel.h>
// Package
#include <Mayaqua/Pack.h>
// Configuration file
#include <Mayaqua/Cfg.h>
// String table
#include <Mayaqua/Table.h>
// Network communication
#include <Mayaqua/Network.h>
// TCP/IP
#include <Mayaqua/TcpIp.h>
// 64 bit real-time clock
#include <Mayaqua/Tick64.h>
// OS-dependent code
#include <Mayaqua/OS.h>
// Code for Microsoft Windows
#include <Mayaqua/Microsoft.h>
// Global variables
extern bool g_memcheck;
extern bool g_debug;
extern char *cmdline;
extern wchar_t *uni_cmdline;
extern bool g_little_endian;
extern LOCK *tick_manual_lock;
// Kernel state
#define NUM_KERNEL_STATUS 128
extern UINT64 kernel_status[NUM_KERNEL_STATUS];
extern UINT64 kernel_status_max[NUM_KERNEL_STATUS];
extern LOCK *kernel_status_lock[NUM_KERNEL_STATUS];
extern BOOL kernel_status_inited;
// Kernel state operation macro
#define KS_LOCK(id) LockKernelStatus(id)
#define KS_UNLOCK(id) UnlockKernelStatus(id)
#define KS_GET64(id) (kernel_status[id])
#define KS_GET(id) ((UINT)KS_GET64(id))
#define KS_GETMAX64(id) (kernel_status_max[id])
#define KS_GETMAX(id) ((UINT)KS_GETMAX64(id))
#ifdef DONT_USE_KERNEL_STATUS
// Disable operations of the kernel status
#define KS_INC(id)
#define KS_DEC(id)
#define KS_ADD(id, n)
#define KS_SUB(id, n)
#else // DONT_USE_KERNEL_STATUS
// Enable operations of the kernel status
#define KS_INC(id) \
if (kernel_status_inited) { \
KS_LOCK(id); \
kernel_status[id]++; \
kernel_status_max[id] = MAX(kernel_status_max[id], kernel_status[id]); \
KS_UNLOCK(id); \
}
#define KS_DEC(id) \
if (kernel_status_inited) { \
KS_LOCK(id); \
kernel_status[id]--; \
kernel_status_max[id] = MAX(kernel_status_max[id], kernel_status[id]); \
KS_UNLOCK(id); \
}
#define KS_ADD(id, n) \
if (kernel_status_inited) { \
KS_LOCK(id); \
kernel_status[id] += n; \
kernel_status_max[id] = MAX(kernel_status_max[id], kernel_status[id]); \
KS_UNLOCK(id); \
}
#define KS_SUB(id, n) \
if (kernel_status_inited) { \
KS_LOCK(id); \
kernel_status[id] -= n; \
kernel_status_max[id] = MAX(kernel_status_max[id], kernel_status[id]); \
KS_UNLOCK(id); \
}
#endif // DONT_USE_KERNEL_STATUS
// Kernel status
// String related
#define KS_STRCPY_COUNT 0 // number of calls StrCpy
#define KS_STRLEN_COUNT 1 // number of calls StrLen
#define KS_STRCHECK_COUNT 2 // number of calls StrCheck
#define KS_STRCAT_COUNT 3 // number of calls StrCat
#define KS_FORMAT_COUNT 4 // number of calls Format
// Memory related
#define KS_MALLOC_COUNT 5 // Number of calls Malloc
#define KS_REALLOC_COUNT 6 // Number of calls ReAlloc
#define KS_FREE_COUNT 7 // number of calls Free
#define KS_TOTAL_MEM_SIZE 8 // The total size of the memory that was allocated so far
#define KS_CURRENT_MEM_COUNT 9 // Number of memory blocks that are currently reserved
#define KS_TOTAL_MEM_COUNT 10 // The total number of memory blocks that ware allocated so far
#define KS_ZERO_COUNT 11 // Number of calls Zero
#define KS_COPY_COUNT 12 // Number of calls Copy
// Lock related
#define KS_NEWLOCK_COUNT 13 // Number of calls NewLock
#define KS_DELETELOCK_COUNT 14 // Number of calls DeleteLock
#define KS_LOCK_COUNT 15 // Number of calls Lock
#define KS_UNLOCK_COUNT 16 // Number of calls Unlock
#define KS_CURRENT_LOCK_COUNT 17 // Current number of LOCK objects
#define KS_CURRENT_LOCKED_COUNT 18 // Current number of locked LOCK objects
// Counter information
#define KS_NEW_COUNTER_COUNT 19 // Number of calls NewCounter
#define KS_DELETE_COUNTER_COUNT 20 // Number of calls DeleteCounter
#define KS_INC_COUNT 21 // Number of calls Inc
#define KS_DEC_COUNT 22 // Number of calls Dec
#define KS_CURRENT_COUNT 23 // Current total number of counts
// Reference counter information
#define KS_NEWREF_COUNT 24 // Number of calls NewRef
#define KS_FREEREF_COUNT 72 // Number of times REF objects are deleted
#define KS_ADDREF_COUNT 25 // Number of calls AddRef
#define KS_RELEASE_COUNT 26 // Number of calls Release
#define KS_CURRENT_REF_COUNT 27 // Current number of REF objects
#define KS_CURRENT_REFED_COUNT 28 // The sum of the current number of references
// Buffer information
#define KS_NEWBUF_COUNT 29 // Number of calls NewBuf
#define KS_FREEBUF_COUNT 30 // NNumber of calls FreeBuf
#define KS_CURRENT_BUF_COUNT 31 // Current number of objects in the BUF
#define KS_READ_BUF_COUNT 32 // Number of calls ReadBuf
#define KS_WRITE_BUF_COUNT 33 // Number of calls WriteBuf
#define KS_ADJUST_BUFSIZE_COUNT 34 // Number of times to adjust the buffer size
#define KS_SEEK_BUF_COUNT 35 // Number of calls SeekBuf
// FIFO information
#define KS_NEWFIFO_COUNT 36 // Number of calls NewFifo
#define KS_FREEFIFO_COUNT 37 // Number of times the FIFO object is deleted
#define KS_READ_FIFO_COUNT 38 // Number of calls ReadFifo
#define KS_WRITE_FIFO_COUNT 39 // Number of calls WriteFifo
#define KS_PEEK_FIFO_COUNT 40 // Number of calls PeekFifo
// List related
#define KS_NEWLIST_COUNT 41 // Number of calls NewList
#define KS_FREELIST_COUNT 42 // Number of times the object LIST was deleted
#define KS_INSERT_COUNT 43 // Number of calls Add
#define KS_DELETE_COUNT 44 // Number of calls Delete
#define KS_SORT_COUNT 45 // Number of calls Sort
#define KS_SEARCH_COUNT 46 // Number of calls Search
#define KS_TOARRAY_COUNT 47 // Number of calls ToArray
// Queue related
#define KS_NEWQUEUE_COUNT 48 // Number of calls NewQueue
#define KS_FREEQUEUE_COUNT 49 // Number of times you delete the object QUEUE
#define KS_PUSH_COUNT 50 // Number of calls Push
#define KS_POP_COUNT 51 // Number of calls POP
// Stack related
#define KS_NEWSK_COUNT 52 // Number of calls NewSk
#define KS_FREESK_COUNT 53 // Number of times you delete the object SK
#define KS_INSERT_QUEUE_COUNT 54 // Number of calls InsertQueue
#define KS_GETNEXT_COUNT 55 // Number of calls GetNext
// Kernel related
#define KS_GETTIME_COUNT 56 // Number of times to get the time
#define KS_GETTICK_COUNT 57 // Number of times to get the system timer
#define KS_NEWTHREAD_COUNT 58 // Number of calls NewThread
#define KS_FREETHREAD_COUNT 59 // Number of times you delete the object THREAD
#define KS_WAITFORTHREAD_COUNT 60 // Number of calls WaitForThread
#define KS_NEWEVENT_COUNT 61 // Number of calls NewEvent
#define KS_FREEEVENT_COUNT 62 // Number of times which EVENT object is deleted
#define KS_WAIT_COUNT 63 // Number of calls Wait
#define KS_SLEEPTHREAD_COUNT 64 // Number of calls SleepThread
// About IO
#define KS_IO_OPEN_COUNT 65 // Number of times to open the file
#define KS_IO_CREATE_COUNT 66 // Number of times that the file was created
#define KS_IO_CLOSE_COUNT 67 // Number of times to close the file
#define KS_IO_READ_COUNT 68 // Number of times to read from the file
#define KS_IO_WRITE_COUNT 69 // Number of times to write to a file
#define KS_IO_TOTAL_READ_SIZE 70 // Total number of bytes read from the file
#define KS_IO_TOTAL_WRITE_SIZE 71 // The total number of bytes written to the file
// Memory pool related
#define KS_MEMPOOL_MALLOC_COUNT 75 // Number of times to allocate the memory pool
#define KS_MEMPOOL_FREE_COUNT 73 // Number of times you release the memory pool
#define KS_MEMPOOL_CURRENT_NUM 74 // Current number of the memory pool
#define KS_MEMPOOL_REALLOC_COUNT 76 // Number of times you have realloc the memory pool
// Macro
#define IsDebug() (g_debug) // A debug mode
#define IsMemCheck() (g_memcheck) // Memory check mode
// Function prototype
void InitMayaqua(bool memcheck, bool debug, int argc, char **argv);
void FreeMayaqua();
bool IsNt();
bool IsUnicode();
void MayaquaDotNetMode();
bool MayaquaIsDotNetMode();
void MayaquaMinimalMode();
bool MayaquaIsMinimalMode();
bool Is64();
bool Is32();
bool IsIA64();
bool IsX64();
void InitKernelStatus();
void FreeKernelStatus();
void PrintDebugInformation();
void LockKernelStatus(UINT id);
void UnlockKernelStatus(UINT id);
void PrintKernelStatus();
void InitCommandLineStr(int argc, char **argv);
void FreeCommandLineStr();
void SetCommandLineStr(char *str);
void SetCommandLineUniStr(wchar_t *str);
char *GetCommandLineStr();
wchar_t *GetCommandLineUniStr();
void ParseCommandLineTokens();
void FreeCommandLineTokens();
TOKEN_LIST *GetCommandLineToken();
UNI_TOKEN_LIST *GetCommandLineUniToken();
void InitOsInfo();
void FreeOsInfo();
void Alert(char *msg, char *caption);
void AlertW(wchar_t *msg, wchar_t *caption);
OS_INFO *GetOsInfo();
UINT GetOsType();
void PrintOsInfo(OS_INFO *info);
void CheckEndian();
void CheckUnixTempDir();
void TimeCheck();
void SetHamMode();
bool IsHamMode();
void InitProbe();
void FreeProbe();
void EnableProbe(bool enable);
bool IsProbeEnabled();
void WriteProbe(char *filename, UINT line, char *str);
void WriteProbeData(char *filename, UINT line, char *str, void *data, UINT size);
USHORT CalcChecksum16(void *buf, UINT size);
#ifdef OS_WIN32
// Import library (for Win32)
#pragma comment(lib, "Ws2_32.lib")
#pragma comment(lib, "winmm.lib")
#pragma comment(lib, "kernel32.lib")
#pragma comment(lib, "user32.lib")
#pragma comment(lib, "gdi32.lib")
#pragma comment(lib, "shell32.lib")
#pragma comment(lib, "comctl32.lib")
#pragma comment(lib, "dbghelp.lib")
#pragma comment(lib, "Iphlpapi.lib")
#pragma comment(lib, "setupapi.lib")
#pragma comment(lib, "version.lib")
#pragma comment(lib, "Netapi32.lib")
#pragma comment(lib, "shlwapi.lib")
#pragma warning( disable : 4099 )
#endif // OS_WIN32
// For Debugging
#ifndef ENCRYPT_C
//#define Disconnect(s) {Debug("Disconnect() Called: %s %u\n", __FILE__, __LINE__);Disconnect(s);}
#endif
#endif // MAYAQUA_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/