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