updater.c

   1 // updater.c\r
   2 // Copyright (C) 2014 Suguru Kawamoto\r
   3 // ソフトウェア自動更新\r
   4 // コードの再利用のため表記はwchar_t型だが実体はchar型でUTF-8\r
   5 \r
   6 #include <tchar.h>\r
   7 #include <ws2tcpip.h>\r
   8 #include <windows.h>\r
   9 #include <mmsystem.h>\r
  10 typedef SOCKADDR_STORAGE_XP SOCKADDR_STORAGE;\r
  11 typedef SOCKADDR_STORAGE *PSOCKADDR_STORAGE, FAR *LPSOCKADDR_STORAGE;\r
  12 #include <winhttp.h>\r
  13 \r
  14 #include "updater.h"\r
  15 #include "socketwrapper.h"\r
  16 #include "protectprocess.h"\r
  17 #include "mbswrapper.h"\r
  18 #include "apiemulator.h"\r
  19 \r
  20 typedef struct\r
  21 {\r
  22         BYTE Signature[64];\r
  23         BYTE ListHash[64];\r
  24 } UPDATE_HASH;\r
  25 \r
  26 #define UPDATE_LIST_FILE_FLAG_DIRECTORY 0x00000001\r
  27 \r
  28 typedef struct\r
  29 {\r
  30         DWORD Flags;\r
  31         CHAR SrcPath[128];\r
  32         BYTE SrcHash[64];\r
  33         CHAR DstPath[128];\r
  34         FILETIME Timestamp;\r
  35 } UPDATE_LIST_FILE;\r
  36 \r
  37 typedef struct\r
  38 {\r
  39         DWORD Version;\r
  40         CHAR VersionString[32];\r
  41         CHAR Description[1024];\r
  42         DWORD FileCount;\r
  43         UPDATE_LIST_FILE File[1];\r
  44 } UPDATE_LIST;\r
  45 \r
  46 BOOL ReadFileViaHTTPW(void* pOut, DWORD Length, DWORD* pLength, LPCWSTR UserAgent, LPCWSTR ServerName, LPCWSTR ObjectName)\r
  47 {\r
  48         BOOL bResult;\r
  49         HINTERNET hSession;\r
  50         HINTERNET hConnect;\r
  51         HINTERNET hRequest;\r
  52         bResult = FALSE;\r
  53         if(hSession = WinHttpOpen(UserAgent, WINHTTP_ACCESS_TYPE_NO_PROXY, WINHTTP_NO_PROXY_NAME, WINHTTP_NO_PROXY_BYPASS, 0))\r
  54         {\r
  55                 if(hConnect = WinHttpConnect(hSession, ServerName, INTERNET_DEFAULT_HTTP_PORT, 0))\r
  56                 {\r
  57                         if(hRequest = WinHttpOpenRequest(hConnect, L"GET", ObjectName, NULL, WINHTTP_NO_REFERER, WINHTTP_DEFAULT_ACCEPT_TYPES, 0))\r
  58                         {\r
  59                                 if(WinHttpSendRequest(hRequest, WINHTTP_NO_ADDITIONAL_HEADERS, 0, WINHTTP_NO_REQUEST_DATA, 0, 0, 0))\r
  60                                 {\r
  61                                         if(WinHttpReceiveResponse(hRequest, NULL))\r
  62                                         {\r
  63                                                 if(WinHttpQueryDataAvailable(hRequest, pLength))\r
  64                                                 {\r
  65                                                         if(*pLength <= Length)\r
  66                                                         {\r
  67                                                                 if(WinHttpReadData(hRequest, pOut, Length, pLength))\r
  68                                                                         bResult = TRUE;\r
  69                                                         }\r
  70                                                 }\r
  71                                         }\r
  72                                 }\r
  73                                 WinHttpCloseHandle(hRequest);\r
  74                         }\r
  75                         WinHttpCloseHandle(hConnect);\r
  76                 }\r
  77                 WinHttpCloseHandle(hSession);\r
  78         }\r
  79         return bResult;\r
  80 }\r
  81 \r
  82 BOOL ReadFileViaHTTP(void* pOut, DWORD Length, DWORD* pLength, LPCSTR UserAgent, LPCSTR ServerName, LPCSTR ObjectName)\r
  83 {\r
  84         BOOL r;\r
  85         wchar_t* pw0;\r
  86         wchar_t* pw1;\r
  87         wchar_t* pw2;\r
  88         pw0 = DuplicateMtoW(UserAgent, -1);\r
  89         pw1 = DuplicateMtoW(ServerName, -1);\r
  90         pw2 = DuplicateMtoW(ObjectName, -1);\r
  91         r = ReadFileViaHTTPW(pOut, Length, pLength, pw0, pw1, pw2);\r
  92         FreeDuplicatedString(pw0);\r
  93         FreeDuplicatedString(pw1);\r
  94         FreeDuplicatedString(pw2);\r
  95         return r;\r
  96 }\r
  97 \r
  98 BOOL SaveMemoryToFileWithTimestamp(LPCTSTR FileName, void* pData, DWORD Size, FILETIME* pTimestamp)\r
  99 {\r
 100         BOOL bResult;\r
 101         HANDLE hFile;\r
 102         bResult = FALSE;\r
 103         if((hFile = CreateFile(FileName, GENERIC_WRITE, FILE_SHARE_READ, NULL, CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL)) != INVALID_HANDLE_VALUE)\r
 104         {\r
 105                 if(WriteFile(hFile, pData, Size, &Size, NULL))\r
 106                 {\r
 107                         if(pTimestamp)\r
 108                         {\r
 109                                 if(SetFileTime(hFile, NULL, NULL, pTimestamp))\r
 110                                         bResult = TRUE;\r
 111                         }\r
 112                         else\r
 113                                 bResult = TRUE;\r
 114                 }\r
 115                 CloseHandle(hFile);\r
 116         }\r
 117         return bResult;\r
 118 }\r
 119 \r
 120 BOOL LoadMemoryFromFileWithTimestamp(LPCTSTR FileName, void* pData, DWORD Size, DWORD* pReadSize, FILETIME* pTimestamp)\r
 121 {\r
 122         BOOL bResult;\r
 123         HANDLE hFile;\r
 124         LARGE_INTEGER li;\r
 125         bResult = FALSE;\r
 126         if((hFile = CreateFile(FileName, GENERIC_READ, FILE_SHARE_READ, NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL)) != INVALID_HANDLE_VALUE)\r
 127         {\r
 128                 if(GetFileSizeEx(hFile, &li))\r
 129                 {\r
 130                         if(li.QuadPart <= (LONGLONG)Size)\r
 131                         {\r
 132                                 if(ReadFile(hFile, pData, Size, pReadSize, NULL))\r
 133                                 {\r
 134                                         if(*pReadSize == li.LowPart)\r
 135                                         {\r
 136                                                 if(pTimestamp)\r
 137                                                 {\r
 138                                                         if(GetFileTime(hFile, NULL, NULL, pTimestamp))\r
 139                                                                 bResult = TRUE;\r
 140                                                 }\r
 141                                                 else\r
 142                                                         bResult = TRUE;\r
 143                                         }\r
 144                                 }\r
 145                         }\r
 146                         CloseHandle(hFile);\r
 147                 }\r
 148         }\r
 149         return bResult;\r
 150 }\r
 151 \r
 152 BOOL CopyAllFilesInDirectory(LPCTSTR From, LPCTSTR To)\r
 153 {\r
 154         BOOL bResult;\r
 155         TCHAR* pFrom;\r
 156         TCHAR* pTo;\r
 157         SHFILEOPSTRUCT fop;\r
 158         bResult = FALSE;\r
 159         if(pFrom = (TCHAR*)malloc(sizeof(TCHAR) * (_tcslen(From) + _tcslen(_T("\\*")) + 2)))\r
 160         {\r
 161                 _tcscpy(pFrom, From);\r
 162                 _tcsncpy(pFrom + _tcslen(pFrom), _T("\\*"), _tcslen(_T("\\*")) + 2);\r
 163                 if(pTo = (TCHAR*)malloc(sizeof(TCHAR) * (_tcslen(To) + 2)))\r
 164                 {\r
 165                         _tcsncpy(pTo, To, _tcslen(To) + 2);\r
 166                         memset(&fop, 0, sizeof(SHFILEOPSTRUCT));\r
 167                         fop.wFunc = FO_COPY;\r
 168                         fop.pFrom = pFrom;\r
 169                         fop.pTo = pTo;\r
 170                         fop.fFlags = FOF_NO_UI;\r
 171                         if(SHFileOperation(&fop) == 0)\r
 172                                 bResult = TRUE;\r
 173                         free(pTo);\r
 174                 }\r
 175                 free(pFrom);\r
 176         }\r
 177         return bResult;\r
 178 }\r
 179 \r
 180 BOOL DeleteDirectoryAndContents(LPCTSTR Path)\r
 181 {\r
 182         BOOL bResult;\r
 183         TCHAR* pFrom;\r
 184         SHFILEOPSTRUCT fop;\r
 185         bResult = FALSE;\r
 186         if(pFrom = (TCHAR*)malloc(sizeof(TCHAR) * (_tcslen(Path) + 2)))\r
 187         {\r
 188                 _tcsncpy(pFrom, Path, _tcslen(Path) + 2);\r
 189                 memset(&fop, 0, sizeof(SHFILEOPSTRUCT));\r
 190                 fop.wFunc = FO_DELETE;\r
 191                 fop.pFrom = pFrom;\r
 192                 fop.fFlags = FOF_NO_UI;\r
 193                 if(SHFileOperation(&fop) == 0)\r
 194                         bResult = TRUE;\r
 195                 free(pFrom);\r
 196         }\r
 197         return bResult;\r
 198 }\r
 199 \r
 200 DWORD ListUpdateFile(UPDATE_LIST* pList, DWORD MaxCount, LPCTSTR ServerPath, LPCTSTR ReferenceDir, LPCTSTR Path)\r
 201 {\r
 202         DWORD Result;\r
 203         TCHAR Temp1[MAX_PATH];\r
 204         TCHAR Temp2[MAX_PATH];\r
 205         TCHAR Temp3[MAX_PATH];\r
 206         HANDLE hFind;\r
 207         WIN32_FIND_DATA Find;\r
 208         void* pBuf;\r
 209         DWORD Length;\r
 210         FILETIME Time;\r
 211         BYTE Hash[64];\r
 212         Result = 0;\r
 213         if(!Path)\r
 214                 Path = _T("");\r
 215         if(_tcslen(ReferenceDir) + _tcslen(Path) + _tcslen(_T("\\*")) < MAX_PATH)\r
 216         {\r
 217                 _tcscpy(Temp1, ReferenceDir);\r
 218                 _tcscat(Temp1, Path);\r
 219                 _tcscat(Temp1, _T("\\*"));\r
 220                 if((hFind = FindFirstFile(Temp1, &Find)) != INVALID_HANDLE_VALUE)\r
 221                 {\r
 222                         do\r
 223                         {\r
 224                                 if(_tcscmp(Find.cFileName, _T(".")) != 0 && _tcscmp(Find.cFileName, _T("..")) != 0)\r
 225                                 {\r
 226                                         if(_tcslen(ServerPath) + _tcslen(_T("/")) + _tcslen(Find.cFileName) < 128 && _tcslen(Path) + _tcslen(_T("\\")) + _tcslen(Find.cFileName) < 128)\r
 227                                         {\r
 228                                                 _tcscpy(Temp1, ServerPath);\r
 229                                                 _tcscat(Temp1, _T("/"));\r
 230                                                 _tcscat(Temp1, Find.cFileName);\r
 231                                                 _tcscpy(Temp2, Path);\r
 232                                                 _tcscat(Temp2, _T("\\"));\r
 233                                                 _tcscat(Temp2, Find.cFileName);\r
 234                                                 if(_tcslen(ReferenceDir) + _tcslen(Temp2) < MAX_PATH)\r
 235                                                 {\r
 236                                                         _tcscpy(Temp3, ReferenceDir);\r
 237                                                         _tcscat(Temp3, Temp2);\r
 238                                                         if((Find.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY))\r
 239                                                         {\r
 240                                                                 if(!(Find.dwFileAttributes & FILE_ATTRIBUTE_REPARSE_POINT))\r
 241                                                                 {\r
 242                                                                         if(pList)\r
 243                                                                         {\r
 244                                                                                 memset(&pList->File[pList->FileCount], 0, sizeof(UPDATE_LIST_FILE));\r
 245                                                                                 pList->File[pList->FileCount].Flags = UPDATE_LIST_FILE_FLAG_DIRECTORY;\r
 246                                                                                 _tcscpy(pList->File[pList->FileCount].DstPath, Temp2);\r
 247                                                                                 pList->FileCount++;\r
 248                                                                         }\r
 249                                                                         Result++;\r
 250                                                                         if(Result >= MaxCount)\r
 251                                                                                 break;\r
 252                                                                         Result += ListUpdateFile(pList, MaxCount, Temp1, ReferenceDir, Temp2);\r
 253                                                                 }\r
 254                                                         }\r
 255                                                         else\r
 256                                                         {\r
 257                                                                 if(pList)\r
 258                                                                 {\r
 259                                                                         if(pBuf = malloc(16777216))\r
 260                                                                         {\r
 261                                                                                 if(LoadMemoryFromFileWithTimestamp(Temp3, pBuf, 16777216, &Length, &Time))\r
 262                                                                                 {\r
 263                                                                                         if(GetHashSHA512(pBuf, Length, &Hash))\r
 264                                                                                         {\r
 265                                                                                                 memset(&pList->File[pList->FileCount], 0, sizeof(UPDATE_LIST_FILE));\r
 266                                                                                                 _tcscpy(pList->File[pList->FileCount].SrcPath, Temp1);\r
 267                                                                                                 memcpy(&pList->File[pList->FileCount].SrcHash, &Hash, 64);\r
 268                                                                                                 _tcscpy(pList->File[pList->FileCount].DstPath, Temp2);\r
 269                                                                                                 pList->File[pList->FileCount].Timestamp = Time;\r
 270                                                                                                 pList->FileCount++;\r
 271                                                                                         }\r
 272                                                                                 }\r
 273                                                                                 free(pBuf);\r
 274                                                                         }\r
 275                                                                 }\r
 276                                                                 Result++;\r
 277                                                                 if(Result >= MaxCount)\r
 278                                                                         break;\r
 279                                                         }\r
 280                                                 }\r
 281                                         }\r
 282                                 }\r
 283                         }\r
 284                         while(FindNextFile(hFind, &Find));\r
 285                         FindClose(hFind);\r
 286                 }\r
 287         }\r
 288         return Result;\r
 289 }\r
 290 \r
 291 // FFFTPの更新情報を作成\r
 292 BOOL BuildUpdates(LPCTSTR PrivateKeyFile, LPCTSTR Password, LPCTSTR ServerPath, LPCTSTR HashFile, LPCTSTR ListFile, DWORD Version, LPCTSTR VersionString, LPCTSTR Description)\r
 293 {\r
 294         BOOL bResult;\r
 295         char PrivateKey[4096];\r
 296         DWORD Length;\r
 297         TCHAR Name[MAX_PATH];\r
 298         TCHAR* p;\r
 299         UPDATE_LIST* pList;\r
 300         UPDATE_HASH Hash;\r
 301         BYTE Buf[1024];\r
 302         bResult = FALSE;\r
 303         memset(PrivateKey, 0, sizeof(PrivateKey));\r
 304         if(LoadMemoryFromFileWithTimestamp(PrivateKeyFile, &PrivateKey, sizeof(PrivateKey) - sizeof(char), &Length, NULL))\r
 305         {\r
 306                 if(GetModuleFileName(NULL, Name, MAX_PATH) > 0)\r
 307                 {\r
 308                         if(p = _tcsrchr(Name, _T('\\')))\r
 309                                 *p = _T('\0');\r
 310                         if(pList = (UPDATE_LIST*)malloc(1048576))\r
 311                         {\r
 312                                 memset(pList, 0, 1048576);\r
 313                                 pList->Version = Version;\r
 314                                 _tcscpy(pList->VersionString, VersionString);\r
 315                                 _tcscpy(pList->Description, Description);\r
 316                                 ListUpdateFile(pList, (1048576 - sizeof(UPDATE_LIST)) / sizeof(UPDATE_LIST_FILE) + 1, ServerPath, Name, NULL);\r
 317                                 Length = (pList->FileCount - 1) * sizeof(UPDATE_LIST_FILE) + sizeof(UPDATE_LIST);\r
 318                                 if(SaveMemoryToFileWithTimestamp(ListFile, pList, Length, NULL))\r
 319                                 {\r
 320                                         memcpy(&Hash.Signature, UPDATE_SIGNATURE, 64);\r
 321                                         if(GetHashSHA512(pList, Length, &Hash.ListHash))\r
 322                                         {\r
 323                                                 if(EncryptSignature(PrivateKey, Password, &Hash, sizeof(UPDATE_HASH), &Buf, sizeof(Buf), &Length))\r
 324                                                 {\r
 325                                                         if(SaveMemoryToFileWithTimestamp(HashFile, &Buf, Length, NULL))\r
 326                                                                 bResult = TRUE;\r
 327                                                 }\r
 328                                         }\r
 329                                 }\r
 330                                 free(pList);\r
 331                         }\r
 332                 }\r
 333         }\r
 334         return bResult;\r
 335 }\r
 336 \r
 337 // FFFTPの更新情報を確認\r
 338 BOOL CheckForUpdates(BOOL bDownload, LPCTSTR DownloadDir, DWORD* pVersion, LPTSTR pVersionString, LPTSTR pDescription)\r
 339 {\r
 340         BOOL bResult;\r
 341         DWORD Length;\r
 342         BYTE Buf1[1024];\r
 343         BYTE Buf2[1024];\r
 344         void* pBuf;\r
 345         UPDATE_HASH UpdateHash;\r
 346         BYTE Hash[64];\r
 347         UPDATE_LIST* pUpdateList;\r
 348         bResult = FALSE;\r
 349         if(ReadFileViaHTTP(&Buf1, sizeof(Buf1), &Length, HTTP_USER_AGENT, UPDATE_SERVER, UPDATE_HASH_PATH))\r
 350         {\r
 351                 if(DecryptSignature(UPDATE_RSA_PUBLIC_KEY, NULL, &Buf1, Length, &Buf2, sizeof(Buf2), &Length))\r
 352                 {\r
 353                         if(Length == sizeof(UPDATE_HASH))\r
 354                         {\r
 355                                 memcpy(&UpdateHash, &Buf2, sizeof(UPDATE_HASH));\r
 356                                 if(memcmp(&UpdateHash.Signature, UPDATE_SIGNATURE, 64) == 0)\r
 357                                 {\r
 358                                         if(pBuf = malloc(1048576))\r
 359                                         {\r
 360                                                 if(ReadFileViaHTTP(pBuf, 1048576, &Length, HTTP_USER_AGENT, UPDATE_SERVER, UPDATE_LIST_PATH))\r
 361                                                 {\r
 362                                                         if(GetHashSHA512(pBuf, Length, &Hash))\r
 363                                                         {\r
 364                                                                 if(memcmp(&Hash, &UpdateHash.ListHash, 64) == 0)\r
 365                                                                 {\r
 366                                                                         if(Length >= sizeof(UPDATE_LIST))\r
 367                                                                         {\r
 368                                                                                 bResult = TRUE;\r
 369                                                                                 pUpdateList = (UPDATE_LIST*)pBuf;\r
 370                                                                                 if(pUpdateList->Version > *pVersion)\r
 371                                                                                 {\r
 372                                                                                         *pVersion = pUpdateList->Version;\r
 373                                                                                         _tcscpy(pVersionString, pUpdateList->VersionString);\r
 374                                                                                         _tcscpy(pDescription, pUpdateList->Description);\r
 375                                                                                 }\r
 376                                                                                 if(bDownload)\r
 377                                                                                         bResult = PrepareUpdates(pBuf, Length, DownloadDir);\r
 378                                                                         }\r
 379                                                                 }\r
 380                                                         }\r
 381                                                 }\r
 382                                                 free(pBuf);\r
 383                                         }\r
 384                                 }\r
 385                         }\r
 386                 }\r
 387         }\r
 388         return bResult;\r
 389 }\r
 390 \r
 391 // 更新するファイルをダウンロード\r
 392 BOOL PrepareUpdates(void* pList, DWORD ListLength, LPCTSTR DownloadDir)\r
 393 {\r
 394         BOOL bResult;\r
 395         UPDATE_LIST* pUpdateList;\r
 396         void* pBuf;\r
 397         DWORD i;\r
 398         BOOL b;\r
 399         DWORD Length;\r
 400         BYTE Hash[64];\r
 401         TCHAR Path[MAX_PATH];\r
 402         bResult = FALSE;\r
 403         if(ListLength >= sizeof(UPDATE_LIST))\r
 404         {\r
 405                 pUpdateList = (UPDATE_LIST*)pList;\r
 406                 if((pUpdateList->FileCount - 1) * sizeof(UPDATE_LIST_FILE) + sizeof(UPDATE_LIST) >= ListLength)\r
 407                 {\r
 408                         bResult = TRUE;\r
 409                         DeleteDirectoryAndContents(DownloadDir);\r
 410                         CreateDirectory(DownloadDir, NULL);\r
 411                         if(pBuf = malloc(16777216))\r
 412                         {\r
 413                                 for(i = 0; i < pUpdateList->FileCount; i++)\r
 414                                 {\r
 415                                         b = FALSE;\r
 416                                         if(pUpdateList->File[i].Flags & UPDATE_LIST_FILE_FLAG_DIRECTORY)\r
 417                                         {\r
 418                                                 _tcscpy(Path, DownloadDir);\r
 419                                                 _tcscat(Path, pUpdateList->File[i].DstPath);\r
 420                                                 if(CreateDirectory(Path, NULL))\r
 421                                                         b = TRUE;\r
 422                                         }\r
 423                                         if(strlen(pUpdateList->File[i].SrcPath) > 0)\r
 424                                         {\r
 425                                                 if(ReadFileViaHTTP(pBuf, 16777216, &Length, HTTP_USER_AGENT, UPDATE_SERVER, pUpdateList->File[i].SrcPath))\r
 426                                                 {\r
 427                                                         if(GetHashSHA512(pBuf, Length, &Hash))\r
 428                                                         {\r
 429                                                                 if(memcmp(&Hash, &pUpdateList->File[i].SrcHash, 64) == 0)\r
 430                                                                 {\r
 431                                                                         _tcscpy(Path, DownloadDir);\r
 432                                                                         _tcscat(Path, pUpdateList->File[i].DstPath);\r
 433                                                                         if(SaveMemoryToFileWithTimestamp(Path, pBuf, Length, &pUpdateList->File[i].Timestamp))\r
 434                                                                                 b = TRUE;\r
 435                                                                 }\r
 436                                                         }\r
 437                                                 }\r
 438                                         }\r
 439                                         if(!b)\r
 440                                         {\r
 441                                                 bResult = FALSE;\r
 442                                                 break;\r
 443                                         }\r
 444                                 }\r
 445                                 free(pBuf);\r
 446                         }\r
 447                 }\r
 448         }\r
 449         return bResult;\r
 450 }\r
 451 \r
 452 // FFFTPを更新\r
 453 BOOL ApplyUpdates(LPCTSTR DestinationDir, LPCTSTR BackupDirName)\r
 454 {\r
 455         BOOL bResult;\r
 456         TCHAR Source[MAX_PATH];\r
 457         TCHAR Backup[MAX_PATH];\r
 458         TCHAR DestinationBackup[MAX_PATH];\r
 459         TCHAR* p;\r
 460         bResult = FALSE;\r
 461         if(GetModuleFileName(NULL, Source, MAX_PATH) > 0)\r
 462         {\r
 463                 if(p = _tcsrchr(Source, _T('\\')))\r
 464                         *p = _T('\0');\r
 465                 _tcscpy(Backup, Source);\r
 466                 _tcscat(Backup, _T("\\"));\r
 467                 _tcscat(Backup, BackupDirName);\r
 468                 DeleteDirectoryAndContents(Backup);\r
 469                 if(CreateDirectory(Backup, NULL))\r
 470                 {\r
 471                         if(CopyAllFilesInDirectory(DestinationDir, Backup))\r
 472                         {\r
 473                                 _tcscpy(DestinationBackup, DestinationDir);\r
 474                                 _tcscat(DestinationBackup, _T("\\"));\r
 475                                 _tcscat(DestinationBackup, BackupDirName);\r
 476                                 if(CopyAllFilesInDirectory(Source, DestinationDir))\r
 477                                 {\r
 478                                         DeleteDirectoryAndContents(DestinationBackup);\r
 479                                         bResult = TRUE;\r
 480                                 }\r
 481                                 else\r
 482                                 {\r
 483                                         DeleteDirectoryAndContents(DestinationBackup);\r
 484                                         CopyAllFilesInDirectory(Backup, DestinationDir);\r
 485                                 }\r
 486                         }\r
 487                 }\r
 488         }\r
 489         return bResult;\r
 490 }\r
 491 \r
 492 // 更新するファイルをダウンロード\r
 493 BOOL CleanupUpdates(LPCTSTR DownloadDir)\r
 494 {\r
 495         BOOL bResult;\r
 496         bResult = FALSE;\r
 497         if(DeleteDirectoryAndContents(DownloadDir))\r
 498                 bResult = TRUE;\r
 499         return bResult;\r
 500 }\r
 501 \r
 502 // 更新用のプロセスを起動\r
 503 BOOL StartUpdateProcess(LPCTSTR DownloadDir, LPCTSTR CommandLine)\r
 504 {\r
 505         BOOL bResult;\r
 506         TCHAR Name[MAX_PATH];\r
 507         TCHAR* p;\r
 508         TCHAR Path[MAX_PATH];\r
 509         bResult = FALSE;\r
 510         if(GetModuleFileName(NULL, Name, MAX_PATH) > 0)\r
 511         {\r
 512                 if(p = _tcsrchr(Name, _T('\\')))\r
 513                         p++;\r
 514                 else\r
 515                         p = Name;\r
 516                 _tcscpy(Path, DownloadDir);\r
 517                 _tcscat(Path, _T("\\"));\r
 518                 _tcscat(Path, p);\r
 519                 if(ShellExecute(NULL, _T("open"), Path, CommandLine, NULL, SW_SHOW) > (HINSTANCE)32)\r
 520                         bResult = TRUE;\r
 521         }\r
 522         return bResult;\r
 523 }\r
 524 \r
 525 // 更新用のプロセスを管理者権限で起動\r
 526 // Windows XP以前など起動できない場合は現在のプロセスで処理を続行\r
 527 BOOL RestartUpdateProcessAsAdministrator(LPCTSTR CommandLine, LPCTSTR Keyword)\r
 528 {\r
 529         BOOL bResult;\r
 530         TCHAR* NewCommandLine;\r
 531         TCHAR Path[MAX_PATH];\r
 532         SHELLEXECUTEINFO Info;\r
 533         bResult = FALSE;\r
 534         if(_tcslen(CommandLine) < _tcslen(Keyword) || _tcscmp(CommandLine + _tcslen(CommandLine) - _tcslen(Keyword), Keyword) != 0)\r
 535         {\r
 536                 if(NewCommandLine = (TCHAR*)malloc(sizeof(TCHAR) * (_tcslen(CommandLine) + _tcslen(Keyword) + 1)))\r
 537                 {\r
 538                         _tcscpy(NewCommandLine, CommandLine);\r
 539                         _tcscat(NewCommandLine, Keyword);\r
 540                         if(GetModuleFileName(NULL, Path, MAX_PATH) > 0)\r
 541                         {\r
 542                                 memset(&Info, 0, sizeof(SHELLEXECUTEINFO));\r
 543                                 Info.cbSize = sizeof(SHELLEXECUTEINFO);\r
 544                                 Info.fMask = SEE_MASK_NOCLOSEPROCESS;\r
 545                                 if(IsUserAnAdmin())\r
 546                                         Info.lpVerb = _T("open");\r
 547                                 else\r
 548                                         Info.lpVerb = _T("runas");\r
 549                                 Info.lpFile = Path;\r
 550                                 Info.lpParameters = NewCommandLine;\r
 551                                 Info.nShow = SW_SHOW;\r
 552                                 if(ShellExecuteEx(&Info))\r
 553                                 {\r
 554                                         WaitForSingleObject(Info.hProcess, INFINITE);\r
 555                                         CloseHandle(Info.hProcess);\r
 556                                         bResult = TRUE;\r
 557                                 }\r
 558                         }\r
 559                         free(NewCommandLine);\r
 560                 }\r
 561         }\r
 562         return bResult;\r
 563 }\r
 564 \r