678 lines
16 KiB
C++
678 lines
16 KiB
C++
// TarHandler.cpp
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#include "StdAfx.h"
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#include "../../../Common/ComTry.h"
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#include "../../../Common/IntToString.h"
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#include "../../../Common/StringConvert.h"
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#include "../../../Common/UTFConvert.h"
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#include "../../../Windows/TimeUtils.h"
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#include "../../Common/LimitedStreams.h"
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#include "../../Common/MethodProps.h"
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#include "../../Common/ProgressUtils.h"
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#include "../../Common/StreamObjects.h"
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#include "../../Common/StreamUtils.h"
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#include "../Common/ItemNameUtils.h"
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#include "TarHandler.h"
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using namespace NWindows;
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namespace NArchive {
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namespace NTar {
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static const UINT k_DefaultCodePage = CP_OEMCP; // it uses it if UTF8 check in names shows error
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static const Byte kProps[] =
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{
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kpidPath,
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kpidIsDir,
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kpidSize,
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kpidPackSize,
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kpidMTime,
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kpidPosixAttrib,
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kpidUser,
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kpidGroup,
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kpidSymLink,
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kpidHardLink,
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// kpidLinkType
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};
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static const Byte kArcProps[] =
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{
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kpidHeadersSize,
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kpidCodePage
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};
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IMP_IInArchive_Props
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IMP_IInArchive_ArcProps
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STDMETHODIMP CHandler::GetArchiveProperty(PROPID propID, PROPVARIANT *value)
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{
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NCOM::CPropVariant prop;
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switch (propID)
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{
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case kpidPhySize: if (_phySizeDefined) prop = _phySize; break;
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case kpidHeadersSize: if (_phySizeDefined) prop = _headersSize; break;
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case kpidErrorFlags:
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{
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UInt32 flags = 0;
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if (!_isArc)
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flags |= kpv_ErrorFlags_IsNotArc;
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else switch (_error)
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{
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case k_ErrorType_UnexpectedEnd: flags = kpv_ErrorFlags_UnexpectedEnd; break;
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case k_ErrorType_Corrupted: flags = kpv_ErrorFlags_HeadersError; break;
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}
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prop = flags;
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break;
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}
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case kpidCodePage:
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{
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const char *name = NULL;
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switch (_openCodePage)
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{
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case CP_OEMCP: name = "OEM"; break;
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case CP_UTF8: name = "UTF-8"; break;
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}
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if (name != NULL)
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prop = name;
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else
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{
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char sz[16];
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ConvertUInt32ToString(_openCodePage, sz);
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prop = sz;
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};
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break;
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}
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}
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prop.Detach(value);
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return S_OK;
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}
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HRESULT CHandler::ReadItem2(ISequentialInStream *stream, bool &filled, CItemEx &item)
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{
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item.HeaderPos = _phySize;
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RINOK(ReadItem(stream, filled, item, _error));
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if (filled)
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{
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/*
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if (item.IsSparse())
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_isSparse = true;
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*/
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if (item.IsPaxExtendedHeader())
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_thereIsPaxExtendedHeader = true;
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}
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_phySize += item.HeaderSize;
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_headersSize += item.HeaderSize;
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return S_OK;
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}
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HRESULT CHandler::Open2(IInStream *stream, IArchiveOpenCallback *callback)
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{
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UInt64 endPos = 0;
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{
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RINOK(stream->Seek(0, STREAM_SEEK_END, &endPos));
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RINOK(stream->Seek(0, STREAM_SEEK_SET, NULL));
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}
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_phySizeDefined = true;
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bool utf8_OK = true;
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if (!_forceCodePage)
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{
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if (!utf8_OK)
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_curCodePage = k_DefaultCodePage;
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}
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for (;;)
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{
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CItemEx item;
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bool filled;
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RINOK(ReadItem2(stream, filled, item));
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if (!filled)
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break;
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_isArc = true;
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_items.Add(item);
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if (!_forceCodePage)
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{
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if (utf8_OK) utf8_OK = CheckUTF8(item.Name, item.NameCouldBeReduced);
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if (utf8_OK) utf8_OK = CheckUTF8(item.LinkName, item.LinkNameCouldBeReduced);
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if (utf8_OK) utf8_OK = CheckUTF8(item.User);
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if (utf8_OK) utf8_OK = CheckUTF8(item.Group);
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}
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RINOK(stream->Seek(item.GetPackSizeAligned(), STREAM_SEEK_CUR, &_phySize));
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if (_phySize > endPos)
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{
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_error = k_ErrorType_UnexpectedEnd;
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break;
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}
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/*
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if (_phySize == endPos)
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{
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_errorMessage = "There are no trailing zero-filled records";
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break;
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}
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*/
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if (callback)
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{
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if (_items.Size() == 1)
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{
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RINOK(callback->SetTotal(NULL, &endPos));
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}
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if ((_items.Size() & 0x3FF) == 0)
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{
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UInt64 numFiles = _items.Size();
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RINOK(callback->SetCompleted(&numFiles, &_phySize));
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}
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}
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}
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if (!_forceCodePage)
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{
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if (!utf8_OK)
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_curCodePage = k_DefaultCodePage;
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}
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_openCodePage = _curCodePage;
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if (_items.Size() == 0)
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{
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if (_error != k_ErrorType_OK)
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{
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_isArc = false;
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return S_FALSE;
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}
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CMyComPtr<IArchiveOpenVolumeCallback> openVolumeCallback;
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if (!callback)
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return S_FALSE;
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callback->QueryInterface(IID_IArchiveOpenVolumeCallback, (void **)&openVolumeCallback);
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if (!openVolumeCallback)
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return S_FALSE;
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NCOM::CPropVariant prop;
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if (openVolumeCallback->GetProperty(kpidName, &prop) != S_OK)
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return S_FALSE;
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if (prop.vt != VT_BSTR)
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return S_FALSE;
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unsigned len = MyStringLen(prop.bstrVal);
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if (len < 4 || MyStringCompareNoCase(prop.bstrVal + len - 4, L".tar") != 0)
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return S_FALSE;
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}
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_isArc = true;
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return S_OK;
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}
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STDMETHODIMP CHandler::Open(IInStream *stream, const UInt64 *, IArchiveOpenCallback *openArchiveCallback)
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{
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COM_TRY_BEGIN
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{
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Close();
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RINOK(Open2(stream, openArchiveCallback));
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_stream = stream;
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}
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return S_OK;
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COM_TRY_END
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}
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STDMETHODIMP CHandler::OpenSeq(ISequentialInStream *stream)
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{
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Close();
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_seqStream = stream;
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_isArc = true;
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return S_OK;
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}
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STDMETHODIMP CHandler::Close()
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{
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_isArc = false;
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_error = k_ErrorType_OK;
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_phySizeDefined = false;
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_phySize = 0;
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_headersSize = 0;
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_curIndex = 0;
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_latestIsRead = false;
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// _isSparse = false;
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_thereIsPaxExtendedHeader = false;
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_items.Clear();
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_seqStream.Release();
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_stream.Release();
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return S_OK;
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}
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STDMETHODIMP CHandler::GetNumberOfItems(UInt32 *numItems)
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{
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*numItems = (_stream ? _items.Size() : (UInt32)(Int32)-1);
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return S_OK;
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}
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CHandler::CHandler()
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{
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copyCoderSpec = new NCompress::CCopyCoder();
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copyCoder = copyCoderSpec;
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_openCodePage = CP_UTF8;
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Init();
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}
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HRESULT CHandler::SkipTo(UInt32 index)
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{
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while (_curIndex < index || !_latestIsRead)
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{
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if (_latestIsRead)
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{
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UInt64 packSize = _latestItem.GetPackSizeAligned();
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RINOK(copyCoderSpec->Code(_seqStream, NULL, &packSize, &packSize, NULL));
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_phySize += copyCoderSpec->TotalSize;
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if (copyCoderSpec->TotalSize != packSize)
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{
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_error = k_ErrorType_UnexpectedEnd;
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return S_FALSE;
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}
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_latestIsRead = false;
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_curIndex++;
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}
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else
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{
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bool filled;
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RINOK(ReadItem2(_seqStream, filled, _latestItem));
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if (!filled)
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{
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_phySizeDefined = true;
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return E_INVALIDARG;
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}
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_latestIsRead = true;
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}
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}
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return S_OK;
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}
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void CHandler::TarStringToUnicode(const AString &s, NWindows::NCOM::CPropVariant &prop, bool toOs) const
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{
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UString dest;
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if (_curCodePage == CP_UTF8)
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ConvertUTF8ToUnicode(s, dest);
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else
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MultiByteToUnicodeString2(dest, s, _curCodePage);
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if (toOs)
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NItemName::ConvertToOSName2(dest);
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prop = dest;
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}
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STDMETHODIMP CHandler::GetProperty(UInt32 index, PROPID propID, PROPVARIANT *value)
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{
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COM_TRY_BEGIN
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NCOM::CPropVariant prop;
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const CItemEx *item;
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if (_stream)
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item = &_items[index];
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else
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{
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if (index < _curIndex)
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return E_INVALIDARG;
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else
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{
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RINOK(SkipTo(index));
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item = &_latestItem;
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}
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}
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switch (propID)
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{
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case kpidPath: TarStringToUnicode(item->Name, prop, true); break;
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case kpidIsDir: prop = item->IsDir(); break;
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case kpidSize: prop = item->GetUnpackSize(); break;
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case kpidPackSize: prop = item->GetPackSizeAligned(); break;
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case kpidMTime:
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if (item->MTime != 0)
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{
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FILETIME ft;
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if (NTime::UnixTime64ToFileTime(item->MTime, ft))
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prop = ft;
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}
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break;
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case kpidPosixAttrib: prop = item->Mode; break;
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case kpidUser: TarStringToUnicode(item->User, prop); break;
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case kpidGroup: TarStringToUnicode(item->Group, prop); break;
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case kpidSymLink: if (item->LinkFlag == NFileHeader::NLinkFlag::kSymLink && !item->LinkName.IsEmpty()) TarStringToUnicode(item->LinkName, prop); break;
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case kpidHardLink: if (item->LinkFlag == NFileHeader::NLinkFlag::kHardLink && !item->LinkName.IsEmpty()) TarStringToUnicode(item->LinkName, prop); break;
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// case kpidLinkType: prop = (int)item->LinkFlag; break;
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}
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prop.Detach(value);
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return S_OK;
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COM_TRY_END
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}
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HRESULT CHandler::Extract(const UInt32 *indices, UInt32 numItems,
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Int32 testMode, IArchiveExtractCallback *extractCallback)
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{
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COM_TRY_BEGIN
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ISequentialInStream *stream = _seqStream;
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bool seqMode = (_stream == NULL);
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if (!seqMode)
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stream = _stream;
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bool allFilesMode = (numItems == (UInt32)(Int32)-1);
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if (allFilesMode)
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numItems = _items.Size();
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if (_stream && numItems == 0)
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return S_OK;
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UInt64 totalSize = 0;
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UInt32 i;
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for (i = 0; i < numItems; i++)
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totalSize += _items[allFilesMode ? i : indices[i]].GetUnpackSize();
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extractCallback->SetTotal(totalSize);
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UInt64 totalPackSize;
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totalSize = totalPackSize = 0;
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CLocalProgress *lps = new CLocalProgress;
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CMyComPtr<ICompressProgressInfo> progress = lps;
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lps->Init(extractCallback, false);
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CLimitedSequentialInStream *streamSpec = new CLimitedSequentialInStream;
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CMyComPtr<ISequentialInStream> inStream(streamSpec);
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streamSpec->SetStream(stream);
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CLimitedSequentialOutStream *outStreamSpec = new CLimitedSequentialOutStream;
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CMyComPtr<ISequentialOutStream> outStream(outStreamSpec);
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for (i = 0; i < numItems || seqMode; i++)
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{
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lps->InSize = totalPackSize;
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lps->OutSize = totalSize;
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RINOK(lps->SetCur());
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CMyComPtr<ISequentialOutStream> realOutStream;
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Int32 askMode = testMode ?
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NExtract::NAskMode::kTest :
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NExtract::NAskMode::kExtract;
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Int32 index = allFilesMode ? i : indices[i];
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const CItemEx *item;
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if (seqMode)
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{
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HRESULT res = SkipTo(index);
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if (res == E_INVALIDARG)
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break;
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RINOK(res);
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item = &_latestItem;
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}
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else
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item = &_items[index];
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RINOK(extractCallback->GetStream(index, &realOutStream, askMode));
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UInt64 unpackSize = item->GetUnpackSize();
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totalSize += unpackSize;
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totalPackSize += item->GetPackSizeAligned();
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if (item->IsDir())
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{
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RINOK(extractCallback->PrepareOperation(askMode));
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RINOK(extractCallback->SetOperationResult(NExtract::NOperationResult::kOK));
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continue;
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}
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bool skipMode = false;
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if (!testMode && !realOutStream)
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{
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if (!seqMode)
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{
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/*
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// probably we must show extracting info it callback handler instead
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if (item->IsHardLink() ||
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item->IsSymLink())
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{
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RINOK(extractCallback->PrepareOperation(askMode));
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RINOK(extractCallback->SetOperationResult(NExtract::NOperationResult::kOK));
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}
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*/
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continue;
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}
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skipMode = true;
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askMode = NExtract::NAskMode::kSkip;
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}
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RINOK(extractCallback->PrepareOperation(askMode));
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outStreamSpec->SetStream(realOutStream);
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realOutStream.Release();
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outStreamSpec->Init(skipMode ? 0 : unpackSize, true);
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Int32 opRes = NExtract::NOperationResult::kOK;
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CMyComPtr<ISequentialInStream> inStream2;
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if (!item->IsSparse())
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inStream2 = inStream;
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else
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{
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GetStream(index, &inStream2);
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if (!inStream2)
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return E_FAIL;
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}
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{
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if (item->IsSymLink())
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{
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RINOK(WriteStream(outStreamSpec, (const char *)item->LinkName, item->LinkName.Len()));
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}
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else
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{
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if (!seqMode)
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{
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RINOK(_stream->Seek(item->GetDataPosition(), STREAM_SEEK_SET, NULL));
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}
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streamSpec->Init(item->GetPackSizeAligned());
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RINOK(copyCoder->Code(inStream2, outStream, NULL, NULL, progress));
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}
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if (outStreamSpec->GetRem() != 0)
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opRes = NExtract::NOperationResult::kDataError;
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}
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if (seqMode)
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{
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_latestIsRead = false;
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_curIndex++;
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}
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outStreamSpec->ReleaseStream();
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RINOK(extractCallback->SetOperationResult(opRes));
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}
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return S_OK;
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COM_TRY_END
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}
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class CSparseStream:
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public IInStream,
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public CMyUnknownImp
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{
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UInt64 _phyPos;
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UInt64 _virtPos;
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bool _needStartSeek;
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public:
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CHandler *Handler;
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CMyComPtr<IUnknown> HandlerRef;
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unsigned ItemIndex;
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CRecordVector<UInt64> PhyOffsets;
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MY_UNKNOWN_IMP2(ISequentialInStream, IInStream)
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STDMETHOD(Read)(void *data, UInt32 size, UInt32 *processedSize);
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STDMETHOD(Seek)(Int64 offset, UInt32 seekOrigin, UInt64 *newPosition);
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void Init()
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{
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_virtPos = 0;
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_phyPos = 0;
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_needStartSeek = true;
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}
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};
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STDMETHODIMP CSparseStream::Read(void *data, UInt32 size, UInt32 *processedSize)
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{
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if (processedSize)
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*processedSize = 0;
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if (size == 0)
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return S_OK;
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const CItemEx &item = Handler->_items[ItemIndex];
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if (_virtPos >= item.Size)
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return S_OK;
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{
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UInt64 rem = item.Size - _virtPos;
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if (size > rem)
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size = (UInt32)rem;
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}
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HRESULT res = S_OK;
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if (item.SparseBlocks.IsEmpty())
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memset(data, 0, size);
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else
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{
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unsigned left = 0, right = item.SparseBlocks.Size();
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for (;;)
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{
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unsigned mid = (left + right) / 2;
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if (mid == left)
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break;
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if (_virtPos < item.SparseBlocks[mid].Offset)
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right = mid;
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else
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left = mid;
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}
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const CSparseBlock &sb = item.SparseBlocks[left];
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UInt64 relat = _virtPos - sb.Offset;
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if (_virtPos >= sb.Offset && relat < sb.Size)
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{
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UInt64 rem = sb.Size - relat;
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if (size > rem)
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size = (UInt32)rem;
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UInt64 phyPos = PhyOffsets[left] + relat;
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if (_needStartSeek || _phyPos != phyPos)
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{
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|
RINOK(Handler->_stream->Seek(item.GetDataPosition() + phyPos, STREAM_SEEK_SET, NULL));
|
|
_needStartSeek = false;
|
|
_phyPos = phyPos;
|
|
}
|
|
res = Handler->_stream->Read(data, size, &size);
|
|
_phyPos += size;
|
|
}
|
|
else
|
|
{
|
|
UInt64 next = item.Size;
|
|
if (_virtPos < sb.Offset)
|
|
next = sb.Offset;
|
|
else if (left + 1 < item.SparseBlocks.Size())
|
|
next = item.SparseBlocks[left + 1].Offset;
|
|
UInt64 rem = next - _virtPos;
|
|
if (size > rem)
|
|
size = (UInt32)rem;
|
|
memset(data, 0, size);
|
|
}
|
|
}
|
|
|
|
_virtPos += size;
|
|
if (processedSize)
|
|
*processedSize = size;
|
|
return res;
|
|
}
|
|
|
|
STDMETHODIMP CSparseStream::Seek(Int64 offset, UInt32 seekOrigin, UInt64 *newPosition)
|
|
{
|
|
switch (seekOrigin)
|
|
{
|
|
case STREAM_SEEK_SET: break;
|
|
case STREAM_SEEK_CUR: offset += _virtPos; break;
|
|
case STREAM_SEEK_END: offset += Handler->_items[ItemIndex].Size; break;
|
|
default: return STG_E_INVALIDFUNCTION;
|
|
}
|
|
if (offset < 0)
|
|
return HRESULT_WIN32_ERROR_NEGATIVE_SEEK;
|
|
_virtPos = offset;
|
|
if (newPosition)
|
|
*newPosition = _virtPos;
|
|
return S_OK;
|
|
}
|
|
|
|
STDMETHODIMP CHandler::GetStream(UInt32 index, ISequentialInStream **stream)
|
|
{
|
|
COM_TRY_BEGIN
|
|
|
|
const CItemEx &item = _items[index];
|
|
|
|
if (item.IsSparse())
|
|
{
|
|
CSparseStream *streamSpec = new CSparseStream;
|
|
CMyComPtr<IInStream> streamTemp = streamSpec;
|
|
streamSpec->Init();
|
|
streamSpec->Handler = this;
|
|
streamSpec->HandlerRef = (IInArchive *)this;
|
|
streamSpec->ItemIndex = index;
|
|
streamSpec->PhyOffsets.Reserve(item.SparseBlocks.Size());
|
|
UInt64 offs = 0;
|
|
FOR_VECTOR(i, item.SparseBlocks)
|
|
{
|
|
const CSparseBlock &sb = item.SparseBlocks[i];
|
|
streamSpec->PhyOffsets.AddInReserved(offs);
|
|
offs += sb.Size;
|
|
}
|
|
*stream = streamTemp.Detach();
|
|
return S_OK;
|
|
}
|
|
|
|
if (item.IsSymLink())
|
|
{
|
|
Create_BufInStream_WithReference((const Byte *)(const char *)item.LinkName, item.LinkName.Len(), (IInArchive *)this, stream);
|
|
return S_OK;
|
|
}
|
|
|
|
return CreateLimitedInStream(_stream, item.GetDataPosition(), item.PackSize, stream);
|
|
|
|
COM_TRY_END
|
|
}
|
|
|
|
void CHandler::Init()
|
|
{
|
|
_forceCodePage = false;
|
|
// _codePage = CP_OEMCP;
|
|
_curCodePage = _specifiedCodePage = CP_UTF8; // CP_OEMCP;
|
|
_thereIsPaxExtendedHeader = false;
|
|
}
|
|
|
|
STDMETHODIMP CHandler::SetProperties(const wchar_t * const *names, const PROPVARIANT *values, UInt32 numProps)
|
|
{
|
|
Init();
|
|
|
|
for (UInt32 i = 0; i < numProps; i++)
|
|
{
|
|
UString name = names[i];
|
|
name.MakeLower_Ascii();
|
|
if (name.IsEmpty())
|
|
return E_INVALIDARG;
|
|
|
|
const PROPVARIANT &prop = values[i];
|
|
|
|
if (name[0] == L'x')
|
|
{
|
|
// some clients write 'x' property. So we support it
|
|
UInt32 level = 0;
|
|
RINOK(ParsePropToUInt32(name.Ptr(1), prop, level));
|
|
}
|
|
else if (name.IsEqualTo("cp"))
|
|
{
|
|
UInt32 cp = CP_OEMCP;
|
|
RINOK(ParsePropToUInt32(L"", prop, cp));
|
|
_forceCodePage = true;
|
|
_curCodePage = _specifiedCodePage = cp;
|
|
}
|
|
else
|
|
return E_INVALIDARG;
|
|
}
|
|
return S_OK;
|
|
}
|
|
|
|
}}
|