/* Derived from source code of TrueCrypt 7.1a, which is Copyright (c) 2008-2012 TrueCrypt Developers Association and which is governed by the TrueCrypt License 3.0. Modifications and additions to the original source code (contained in this file) and all other portions of this file are Copyright (c) 2013-2015 IDRIX and are governed by the Apache License 2.0 the full text of which is contained in the file License.txt included in VeraCrypt binary and source code distribution packages. */ #include "Tcdefs.h" #include "Inflate.h" #include "SelfExtract.h" #include "Wizard.h" #include "Setup.h" #include "Crc.h" #include "Endian.h" #include "Dlgcode.h" #include "Dir.h" #include "Language.h" #include "Resource.h" #include <tchar.h> #include <Strsafe.h> #ifndef SRC_POS #define SRC_POS (__FUNCTION__ ":" TC_TO_STRING(__LINE__)) #endif #define OutputPackageFile L"VeraCrypt Setup " _T(VERSION_STRING) L".exe" #define MAG_START_MARKER "TCINSTRT" #define MAG_END_MARKER_OBFUSCATED "T/C/I/N/S/C/R/C" #define PIPE_BUFFER_LEN (4 * BYTES_PER_KB) unsigned char MagEndMarker [sizeof (MAG_END_MARKER_OBFUSCATED)]; wchar_t DestExtractPath [TC_MAX_PATH]; DECOMPRESSED_FILE Decompressed_Files [NBR_COMPRESSED_FILES]; volatile char *PipeWriteBuf = NULL; volatile HANDLE hChildStdinWrite = INVALID_HANDLE_VALUE; unsigned char *DecompressedData = NULL; void SelfExtractStartupInit (void) { DeobfuscateMagEndMarker (); } // The end marker must be included in the self-extracting exe only once, not twice (used e.g. // by IsSelfExtractingPackage()) and that's why MAG_END_MARKER_OBFUSCATED is obfuscated and // needs to be deobfuscated using this function at startup. static void DeobfuscateMagEndMarker (void) { int i; for (i = 0; i < sizeof (MAG_END_MARKER_OBFUSCATED); i += 2) MagEndMarker [i/2] = MAG_END_MARKER_OBFUSCATED [i]; MagEndMarker [i/2] = 0; } static void PkgError (wchar_t *msg) { MessageBox (NULL, msg, L"VeraCrypt", MB_ICONERROR | MB_SETFOREGROUND | MB_TOPMOST); } static void PkgWarning (wchar_t *msg) { MessageBox (NULL, msg, L"VeraCrypt", MB_ICONWARNING | MB_SETFOREGROUND | MB_TOPMOST); } static void PkgInfo (wchar_t *msg) { MessageBox (NULL, msg, L"VeraCrypt", MB_ICONINFORMATION | MB_SETFOREGROUND | MB_TOPMOST); } // Returns 0 if decompression fails or, if successful, returns the size of the decompressed data static int DecompressBuffer (char *out, char *in, int len) { return (DecompressDeflatedData (out, in, len)); // Inflate } static void __cdecl PipeWriteThread (void *len) { int sendBufSize = PIPE_BUFFER_LEN, bytesSent = 0; int bytesToSend = *((int *) len), bytesSentTotal = 0; if (PipeWriteBuf == NULL || (HANDLE) hChildStdinWrite == INVALID_HANDLE_VALUE) { PkgError (L"Failed sending data to the STDIN pipe"); return; } while (bytesToSend > 0) { if (bytesToSend < PIPE_BUFFER_LEN) sendBufSize = bytesToSend; if (!WriteFile ((HANDLE) hChildStdinWrite, (char *) PipeWriteBuf + bytesSentTotal, sendBufSize, &bytesSent, NULL) || bytesSent == 0 || bytesSent != sendBufSize) { PkgError (L"Failed sending data to the STDIN pipe"); return; } bytesToSend -= bytesSent; bytesSentTotal += bytesSent; } // Closing the pipe causes the child process to stop reading from it if (!CloseHandle (hChildStdinWrite)) { PkgError (L"Cannot close pipe"); return; } } // Returns 0 if compression fails or, if successful, the size of the compressed data static int CompressBuffer (char *out, char *in, int len) { SECURITY_ATTRIBUTES securityAttrib; DWORD bytesReceived = 0; HANDLE hChildStdoutWrite = INVALID_HANDLE_VALUE; HANDLE hChildStdoutRead = INVALID_HANDLE_VALUE; HANDLE hChildStdinRead = INVALID_HANDLE_VALUE; STARTUPINFO startupInfo; PROCESS_INFORMATION procInfo; char pipeBuffer [PIPE_BUFFER_LEN]; int res_len = 0; BOOL bGzipHeaderRead = FALSE; wchar_t szGzipCmd[64]; ZeroMemory (&startupInfo, sizeof (startupInfo)); ZeroMemory (&procInfo, sizeof (procInfo)); // Pipe handle inheritance securityAttrib.bInheritHandle = TRUE; securityAttrib.nLength = sizeof (securityAttrib); securityAttrib.lpSecurityDescriptor = NULL; if (!CreatePipe (&hChildStdoutRead, &hChildStdoutWrite, &securityAttrib, 0)) { PkgError (L"Cannot create STDOUT pipe."); return 0; } SetHandleInformation (hChildStdoutRead, HANDLE_FLAG_INHERIT, 0); if (!CreatePipe (&hChildStdinRead, &((HANDLE) hChildStdinWrite), &securityAttrib, 0)) { PkgError (L"Cannot create STDIN pipe."); CloseHandle(hChildStdoutWrite); CloseHandle(hChildStdoutRead); return 0; } SetHandleInformation (hChildStdinWrite, HANDLE_FLAG_INHERIT, 0); // Create a child process that will compress the data startupInfo.wShowWindow = SW_HIDE; startupInfo.hStdInput = hChildStdinRead; startupInfo.hStdOutput = hChildStdoutWrite; startupInfo.cb = sizeof (startupInfo); startupInfo.hStdError = hChildStdoutWrite; startupInfo.dwFlags |= STARTF_USESTDHANDLES | STARTF_USESHOWWINDOW; StringCbCopyW (szGzipCmd, sizeof (szGzipCmd), L"gzip --best"); if (!CreateProcess (NULL, szGzipCmd, NULL, NULL, TRUE, 0, NULL, NULL, &startupInfo, &procInfo)) { PkgError (L"Error: Cannot run gzip.\n\nBefore you can create a self-extracting VeraCrypt package, you need to have the open-source 'gzip' compression tool placed in any directory in the search path for executable files (for example, in 'C:\\Windows\\').\n\nNote: gzip can be freely downloaded e.g. from www.gzip.org"); CloseHandle(hChildStdoutWrite); CloseHandle(hChildStdoutRead); CloseHandle(hChildStdinRead); CloseHandle(hChildStdinWrite); return 0; } CloseHandle (procInfo.hProcess); CloseHandle (procInfo.hThread); // Start sending the uncompressed data to the pipe (STDIN) PipeWriteBuf = in; _beginthread (PipeWriteThread, PIPE_BUFFER_LEN * 2, (void *) &len); if (!CloseHandle (hChildStdoutWrite)) { PkgError (L"Cannot close STDOUT write"); CloseHandle(hChildStdoutRead); CloseHandle(hChildStdinRead); return 0; } bGzipHeaderRead = FALSE; // Read the compressed data from the pipe (sent by the child process to STDOUT) while (TRUE) { if (!ReadFile (hChildStdoutRead, pipeBuffer, bGzipHeaderRead ? PIPE_BUFFER_LEN : 10, &bytesReceived, NULL)) break; if (bGzipHeaderRead) { memcpy (out + res_len, pipeBuffer, bytesReceived); res_len += bytesReceived; } else bGzipHeaderRead = TRUE; // Skip the 10-byte gzip header } CloseHandle(hChildStdoutRead); CloseHandle(hChildStdinRead); return res_len - 8; // A gzip stream ends with a CRC-32 hash and a 32-bit size (those 8 bytes need to be chopped off) } // Clears all bytes that change when an exe file is digitally signed, except the data that are appended. // If those bytes weren't cleared, CRC-32 checks would fail after signing. static void WipeSignatureAreas (char *buffer) { // Clear bytes 0x130-0x1ff memset (buffer + 0x130, 0, 0x200 - 0x130); } BOOL MakeSelfExtractingPackage (HWND hwndDlg, wchar_t *szDestDir) { int i, x; wchar_t inputFile [TC_MAX_PATH]; wchar_t outputFile [TC_MAX_PATH]; wchar_t szTmpFilePath [TC_MAX_PATH]; unsigned char szTmp32bit [4] = {0}; unsigned char *szTmp32bitPtr = szTmp32bit; unsigned char *buffer = NULL, *compressedBuffer = NULL; unsigned char *bufIndex = NULL; wchar_t tmpStr [2048]; int bufLen = 0, compressedDataLen = 0, uncompressedDataLen = 0; x = wcslen (szDestDir); if (x < 2) goto err; if (szDestDir[x - 1] != L'\\') StringCbCatW (szDestDir, MAX_PATH, L"\\"); GetModuleFileName (NULL, inputFile, ARRAYSIZE (inputFile)); StringCbCopyW (outputFile, sizeof(outputFile), szDestDir); StringCbCatW (outputFile, sizeof(outputFile), OutputPackageFile); // Clone 'VeraCrypt Setup.exe' to create the base of the new self-extracting archive if (!TCCopyFile (inputFile, outputFile)) { handleWin32Error (hwndDlg, SRC_POS); PkgError (L"Cannot copy 'VeraCrypt Setup.exe' to the package"); goto err; } // Determine the buffer size needed for all the files and meta data and check if all required files exist bufLen = 0; for (i = 0; i < sizeof (szCompressedFiles) / sizeof (szCompressedFiles[0]); i++) { StringCbPrintfW (szTmpFilePath, sizeof(szTmpFilePath), L"%s%s", szDestDir, szCompressedFiles[i]); if (!FileExists (szTmpFilePath)) { wchar_t tmpstr [1000]; StringCbPrintfW (tmpstr, sizeof(tmpstr), L"File not found:\n\n'%s'", szTmpFilePath); if (_wremove (outputFile)) StringCbCatW (tmpstr, sizeof(tmpstr), L"\nFailed also to delete package file"); PkgError (tmpstr); goto err; } bufLen += (int) GetFileSize64 (szTmpFilePath); bufLen += 2; // 16-bit filename length bufLen += (wcslen(szCompressedFiles[i]) * sizeof (wchar_t)); // Filename bufLen += 4; // CRC-32 bufLen += 4; // 32-bit file length } buffer = malloc (bufLen + 524288); // + 512K reserve if (buffer == NULL) { PkgError (L"Cannot allocate memory for uncompressed data"); if (_wremove (outputFile)) PkgError (L"Cannot allocate memory for uncompressed data.\nFailed also to delete package file"); else PkgError (L"Cannot allocate memory for uncompressed data"); goto err; } // Write the start marker if (!SaveBufferToFile (MAG_START_MARKER, outputFile, strlen (MAG_START_MARKER), TRUE, FALSE)) { if (_wremove (outputFile)) PkgError (L"Cannot write the start marker\nFailed also to delete package file"); else PkgError (L"Cannot write the start marker"); goto err; } bufIndex = buffer; // Copy all required files and their meta data to the buffer for (i = 0; i < sizeof (szCompressedFiles) / sizeof (szCompressedFiles[0]); i++) { DWORD tmpFileSize; unsigned char *tmpBuffer; StringCbPrintfW (szTmpFilePath, sizeof(szTmpFilePath), L"%s%s", szDestDir, szCompressedFiles[i]); tmpBuffer = LoadFile (szTmpFilePath, &tmpFileSize); if (tmpBuffer == NULL) { wchar_t tmpstr [1000]; StringCbPrintfW (tmpstr, sizeof(tmpstr), L"Cannot load file \n'%s'", szTmpFilePath); if (_wremove (outputFile)) StringCbCatW (tmpstr, sizeof(tmpstr), L"\nFailed also to delete package file"); PkgError (tmpstr); goto err; } // Copy the filename length to the main buffer mputWord (bufIndex, (WORD) wcslen(szCompressedFiles[i])); // Copy the filename to the main buffer wmemcpy ((wchar_t*)bufIndex, szCompressedFiles[i], wcslen(szCompressedFiles[i])); bufIndex += (wcslen(szCompressedFiles[i]) * sizeof (wchar_t)); // Compute CRC-32 hash of the uncompressed file and copy it to the main buffer mputLong (bufIndex, GetCrc32 (tmpBuffer, tmpFileSize)); // Copy the file length to the main buffer mputLong (bufIndex, (unsigned __int32) tmpFileSize); // Copy the file contents to the main buffer memcpy (bufIndex, tmpBuffer, tmpFileSize); bufIndex += tmpFileSize; free (tmpBuffer); } // Calculate the total size of the uncompressed data uncompressedDataLen = (int) (bufIndex - buffer); // Write total size of the uncompressed data szTmp32bitPtr = szTmp32bit; mputLong (szTmp32bitPtr, (unsigned __int32) uncompressedDataLen); if (!SaveBufferToFile (szTmp32bit, outputFile, sizeof (szTmp32bit), TRUE, FALSE)) { if (_wremove (outputFile)) PkgError (L"Cannot write the total size of the uncompressed data.\nFailed also to delete package file"); else PkgError (L"Cannot write the total size of the uncompressed data"); goto err; } // Compress all the files and meta data in the buffer to create a solid archive compressedBuffer = malloc (uncompressedDataLen + 524288); // + 512K reserve if (compressedBuffer == NULL) { if (_wremove (outputFile)) PkgError (L"Cannot allocate memory for compressed data.\nFailed also to delete package file"); else PkgError (L"Cannot allocate memory for compressed data"); goto err; } compressedDataLen = CompressBuffer (compressedBuffer, buffer, uncompressedDataLen); if (compressedDataLen <= 0) { if (_wremove (outputFile)) PkgError (L"Failed to compress the data.\nFailed also to delete package file"); else PkgError (L"Failed to compress the data"); goto err; } free (buffer); buffer = NULL; // Write the total size of the compressed data szTmp32bitPtr = szTmp32bit; mputLong (szTmp32bitPtr, (unsigned __int32) compressedDataLen); if (!SaveBufferToFile (szTmp32bit, outputFile, sizeof (szTmp32bit), TRUE, FALSE)) { if (_wremove (outputFile)) PkgError (L"Cannot write the total size of the compressed data.\nFailed also to delete package file"); else PkgError (L"Cannot write the total size of the compressed data"); goto err; } // Write the compressed data if (!SaveBufferToFile (compressedBuffer, outputFile, compressedDataLen, TRUE, FALSE)) { if (_wremove (outputFile)) PkgError (L"Cannot write compressed data to the package.\nFailed also to delete package file"); else PkgError (L"Cannot write compressed data to the package"); goto err; } // Write the end marker if (!SaveBufferToFile (MagEndMarker, outputFile, strlen (MagEndMarker), TRUE, FALSE)) { if (_wremove (outputFile)) PkgError (L"Cannot write the end marker.\nFailed also to delete package file"); else PkgError (L"Cannot write the end marker"); goto err; } free (compressedBuffer); compressedBuffer = NULL; // Compute and write CRC-32 hash of the entire package { DWORD tmpFileSize; char *tmpBuffer; tmpBuffer = LoadFile (outputFile, &tmpFileSize); if (tmpBuffer == NULL) { handleWin32Error (hwndDlg, SRC_POS); if (_wremove (outputFile)) PkgError (L"Cannot load the package to compute CRC.\nFailed also to delete package file"); else PkgError (L"Cannot load the package to compute CRC"); goto err; } // Zero all bytes that change when the exe is digitally signed (except appended blocks). WipeSignatureAreas (tmpBuffer); szTmp32bitPtr = szTmp32bit; mputLong (szTmp32bitPtr, GetCrc32 (tmpBuffer, tmpFileSize)); free (tmpBuffer); if (!SaveBufferToFile (szTmp32bit, outputFile, sizeof (szTmp32bit), TRUE, FALSE)) { if (_wremove (outputFile)) PkgError (L"Cannot write the total size of the compressed data.\nFailed also to delete package file"); else PkgError (L"Cannot write the total size of the compressed data"); goto err; } } StringCbPrintfW (tmpStr, sizeof(tmpStr), L"Self-extracting package successfully created (%s)", outputFile); PkgInfo (tmpStr); return TRUE; err: if (buffer) free (buffer); if (compressedBuffer) free (compressedBuffer); return FALSE; } // Verifies the CRC-32 of the whole self-extracting package (except the digital signature areas, if present) BOOL VerifyPackageIntegrity (void) { int fileDataEndPos = 0; int fileDataStartPos = 0; unsigned __int32 crc = 0; unsigned char *tmpBuffer; int tmpFileSize; wchar_t path [TC_MAX_PATH]; GetModuleFileName (NULL, path, ARRAYSIZE (path)); fileDataEndPos = (int) FindStringInFile (path, MagEndMarker, strlen (MagEndMarker)); if (fileDataEndPos < 0) { Error ("DIST_PACKAGE_CORRUPTED", NULL); return FALSE; } fileDataEndPos--; fileDataStartPos = (int) FindStringInFile (path, MAG_START_MARKER, strlen (MAG_START_MARKER)); if (fileDataStartPos < 0) { Error ("DIST_PACKAGE_CORRUPTED", NULL); return FALSE; } fileDataStartPos += strlen (MAG_START_MARKER); if (!LoadInt32 (path, &crc, fileDataEndPos + strlen (MagEndMarker) + 1)) { Error ("CANT_VERIFY_PACKAGE_INTEGRITY", NULL); return FALSE; } // Compute the CRC-32 hash of the whole file (except the digital signature area, if present) tmpBuffer = LoadFile (path, &tmpFileSize); if (tmpBuffer == NULL) { Error ("CANT_VERIFY_PACKAGE_INTEGRITY", NULL); return FALSE; } // Zero all bytes that change when an exe is digitally signed (except appended blocks). WipeSignatureAreas (tmpBuffer); if (crc != GetCrc32 (tmpBuffer, fileDataEndPos + 1 + strlen (MagEndMarker))) { free (tmpBuffer); Error ("DIST_PACKAGE_CORRUPTED", NULL); return FALSE; } free (tmpBuffer); return TRUE; } // Determines whether we are a self-extracting package BOOL IsSelfExtractingPackage (void) { wchar_t path [TC_MAX_PATH]; GetModuleFileName (NULL, path, ARRAYSIZE (path)); return (FindStringInFile (path, MagEndMarker, strlen (MagEndMarker)) != -1); } static void FreeAllFileBuffers (void) { int fileNo; if (DecompressedData != NULL) { free (DecompressedData); DecompressedData = NULL; } for (fileNo = 0; fileNo < NBR_COMPRESSED_FILES; fileNo++) { Decompressed_Files[fileNo].fileName = NULL; Decompressed_Files[fileNo].fileContent = NULL; Decompressed_Files[fileNo].fileNameLength = 0; Decompressed_Files[fileNo].fileLength = 0; Decompressed_Files[fileNo].crc = 0; } } // Assumes that VerifyPackageIntegrity() has been used. Returns TRUE, if successful (otherwise FALSE). // Creates a table of pointers to buffers containing the following objects for each file: // filename size, filename (not null-terminated!), file size, file CRC-32, uncompressed file contents. // For details, see the definition of the DECOMPRESSED_FILE structure. BOOL SelfExtractInMemory (wchar_t *path) { int filePos = 0, fileNo = 0; int fileDataEndPos = 0; int fileDataStartPos = 0; int uncompressedLen = 0; int compressedLen = 0; unsigned char *compressedData = NULL; unsigned char *bufPos = NULL, *bufEndPos = NULL; FreeAllFileBuffers(); fileDataEndPos = (int) FindStringInFile (path, MagEndMarker, strlen (MagEndMarker)); if (fileDataEndPos < 0) { Error ("CANNOT_READ_FROM_PACKAGE", NULL); return FALSE; } fileDataEndPos--; fileDataStartPos = (int) FindStringInFile (path, MAG_START_MARKER, strlen (MAG_START_MARKER)); if (fileDataStartPos < 0) { Error ("CANNOT_READ_FROM_PACKAGE", NULL); return FALSE; } fileDataStartPos += strlen (MAG_START_MARKER); filePos = fileDataStartPos; // Read the stored total size of the uncompressed data if (!LoadInt32 (path, &uncompressedLen, filePos)) { Error ("CANNOT_READ_FROM_PACKAGE", NULL); return FALSE; } filePos += 4; // Read the stored total size of the compressed data if (!LoadInt32 (path, &compressedLen, filePos)) { Error ("CANNOT_READ_FROM_PACKAGE", NULL); return FALSE; } filePos += 4; if (compressedLen != fileDataEndPos - fileDataStartPos - 8 + 1) { Error ("DIST_PACKAGE_CORRUPTED", NULL); } DecompressedData = malloc (uncompressedLen + 524288); // + 512K reserve if (DecompressedData == NULL) { Error ("ERR_MEM_ALLOC", NULL); return FALSE; } bufPos = DecompressedData; bufEndPos = bufPos + uncompressedLen - 1; compressedData = LoadFileBlock (path, filePos, compressedLen); if (compressedData == NULL) { free (DecompressedData); DecompressedData = NULL; Error ("CANNOT_READ_FROM_PACKAGE", NULL); return FALSE; } // Decompress the data if (DecompressBuffer (DecompressedData, compressedData, compressedLen) != uncompressedLen) { Error ("DIST_PACKAGE_CORRUPTED", NULL); goto sem_end; } while (bufPos <= bufEndPos && fileNo < NBR_COMPRESSED_FILES) { // Filename length Decompressed_Files[fileNo].fileNameLength = mgetWord (bufPos); // Filename Decompressed_Files[fileNo].fileName = (wchar_t*) bufPos; bufPos += (Decompressed_Files[fileNo].fileNameLength * sizeof (wchar_t)); // CRC-32 of the file Decompressed_Files[fileNo].crc = mgetLong (bufPos); // File length Decompressed_Files[fileNo].fileLength = mgetLong (bufPos); // File content Decompressed_Files[fileNo].fileContent = bufPos; bufPos += Decompressed_Files[fileNo].fileLength; // Verify CRC-32 of the file (to verify that it didn't get corrupted while creating the solid archive). if (Decompressed_Files[fileNo].crc != GetCrc32 (Decompressed_Files[fileNo].fileContent, Decompressed_Files[fileNo].fileLength)) { Error ("DIST_PACKAGE_CORRUPTED", NULL); goto sem_end; } fileNo++; } if (fileNo < NBR_COMPRESSED_FILES) { Error ("DIST_PACKAGE_CORRUPTED", NULL); goto sem_end; } free (compressedData); return TRUE; sem_end: FreeAllFileBuffers(); free (compressedData); return FALSE; } void __cdecl ExtractAllFilesThread (void *hwndDlg) { int fileNo; BOOL bSuccess = FALSE; wchar_t packageFile [TC_MAX_PATH]; InvalidateRect (GetDlgItem (GetParent (hwndDlg), IDD_INSTL_DLG), NULL, TRUE); ClearLogWindow (hwndDlg); GetModuleFileName (NULL, packageFile, ARRAYSIZE (packageFile)); if (!(bSuccess = SelfExtractInMemory (packageFile))) goto eaf_end; if (mkfulldir (DestExtractPath, TRUE) != 0) { if (mkfulldir (DestExtractPath, FALSE) != 0) { wchar_t szTmp[TC_MAX_PATH]; handleWin32Error (hwndDlg, SRC_POS); StringCbPrintfW (szTmp, sizeof(szTmp), GetString ("CANT_CREATE_FOLDER"), DestExtractPath); MessageBoxW (hwndDlg, szTmp, lpszTitle, MB_ICONHAND); bSuccess = FALSE; goto eaf_end; } } for (fileNo = 0; fileNo < NBR_COMPRESSED_FILES; fileNo++) { wchar_t fileName [TC_MAX_PATH] = {0}; wchar_t filePath [TC_MAX_PATH] = {0}; // Filename StringCchCopyNW (fileName, ARRAYSIZE(fileName), Decompressed_Files[fileNo].fileName, Decompressed_Files[fileNo].fileNameLength); StringCbCopyW (filePath, sizeof(filePath), DestExtractPath); StringCbCatW (filePath, sizeof(filePath), fileName); StatusMessageParam (hwndDlg, "EXTRACTING_VERB", filePath); // Write the file if (!SaveBufferToFile ( Decompressed_Files[fileNo].fileContent, filePath, Decompressed_Files[fileNo].fileLength, FALSE, FALSE)) { wchar_t szTmp[512]; StringCbPrintfW (szTmp, sizeof (szTmp), GetString ("CANNOT_WRITE_FILE_X"), filePath); MessageBoxW (hwndDlg, szTmp, lpszTitle, MB_ICONERROR | MB_SETFOREGROUND | MB_TOPMOST); bSuccess = FALSE; goto eaf_end; } UpdateProgressBarProc ((int) (100 * ((float) fileNo / NBR_COMPRESSED_FILES))); } eaf_end: FreeAllFileBuffers(); if (bSuccess) PostMessage (MainDlg, TC_APPMSG_EXTRACTION_SUCCESS, 0, 0); else PostMessage (MainDlg, TC_APPMSG_EXTRACTION_FAILURE, 0, 0); }