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/*
Copyright (C) 2012 George Hazan
This is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This 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
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with this file; see the file license.txt. If
not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA.
*/
#include "stdafx.h"
static void PrepareFileName(wchar_t *dest, size_t destSize, const wchar_t *ptszPath, const wchar_t *ptszFileName)
{
mir_snwprintf(dest, destSize, L"%s\\%s", ptszPath, ptszFileName);
for (wchar_t *p = dest; *p; ++p)
if (*p == '/')
*p = '\\';
}
bool extractCurrentFile(unzFile uf, wchar_t *ptszDestPath, wchar_t *ptszBackPath, bool ch)
{
unz_file_info64 file_info;
char filename[MAX_PATH], buf[8192];
int err = unzGetCurrentFileInfo64(uf, &file_info, filename, sizeof(filename), buf, sizeof(buf), nullptr, 0);
if (err != UNZ_OK)
return false;
for (char *p = strchr(filename, '/'); p; p = strchr(p+1, '/'))
*p = '\\';
// This is because there may be more then one file in a single zip
// So we need to check each file
if (ch && 1 != db_get_b(0, DB_MODULE_FILES, StrToLower(ptrA(mir_strdup(filename))), 1))
return true;
wchar_t tszDestFile[MAX_PATH], tszBackFile[MAX_PATH];
wchar_t *ptszNewName = mir_utf8decodeW(filename);
if (ptszNewName == nullptr)
ptszNewName = mir_a2u(filename);
if (!(file_info.external_fa & FILE_ATTRIBUTE_DIRECTORY)) {
err = unzOpenCurrentFile(uf);
if (err != UNZ_OK) {
mir_free(ptszNewName);
return false;
}
if (ptszBackPath != nullptr) {
PrepareFileName(tszDestFile, _countof(tszDestFile), ptszDestPath, ptszNewName);
PrepareFileName(tszBackFile, _countof(tszBackFile), ptszBackPath, ptszNewName);
BackupFile(tszDestFile, tszBackFile);
}
PrepareFileName(tszDestFile, _countof(tszDestFile), ptszDestPath, ptszNewName);
SafeCreateFilePath(tszDestFile);
wchar_t *ptszFile2unzip;
if (hPipe == nullptr) // direct mode
ptszFile2unzip = tszDestFile;
else {
wchar_t tszTempPath[MAX_PATH];
GetTempPath( _countof(tszTempPath), tszTempPath);
GetTempFileName(tszTempPath, L"PUtemp", GetCurrentProcessId(), tszBackFile);
ptszFile2unzip = tszBackFile;
}
HANDLE hFile = CreateFile(ptszFile2unzip, GENERIC_WRITE, FILE_SHARE_WRITE, nullptr, CREATE_ALWAYS, file_info.external_fa, nullptr);
if (hFile == INVALID_HANDLE_VALUE) {
mir_free(ptszNewName);
return false;
}
while (true) {
err = unzReadCurrentFile(uf, buf, sizeof(buf));
if (err <= 0)
break;
DWORD bytes;
if (!WriteFile(hFile, buf, err, &bytes, FALSE)) {
err = UNZ_ERRNO;
break;
}
}
FILETIME ftLocal, ftCreate, ftLastAcc, ftLastWrite;
GetFileTime(hFile, &ftCreate, &ftLastAcc, &ftLastWrite);
DosDateTimeToFileTime(HIWORD(file_info.dosDate), LOWORD(file_info.dosDate), &ftLocal);
LocalFileTimeToFileTime(&ftLocal, &ftLastWrite);
SetFileTime(hFile, &ftCreate, &ftLastAcc, &ftLastWrite);
CloseHandle(hFile);
unzCloseCurrentFile(uf); /* don't lose the error */
if (hPipe)
SafeMoveFile(ptszFile2unzip, tszDestFile);
}
mir_free(ptszNewName);
return true;
}
bool unzip(const wchar_t *ptszZipFile, wchar_t *ptszDestPath, wchar_t *ptszBackPath,bool ch)
{
bool bResult = true;
zlib_filefunc64_def ffunc;
fill_fopen64_filefunc(&ffunc);
unzFile uf = unzOpen2_64(ptszZipFile, &ffunc);
if (uf) {
do {
if (!extractCurrentFile(uf, ptszDestPath, ptszBackPath,ch))
bResult = false;
}
while (unzGoToNextFile(uf) == UNZ_OK);
unzClose(uf);
}
return bResult;
}
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