1281 lines
32 KiB
C++
1281 lines
32 KiB
C++
/* 7zIn.c */
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#include "7zIn.h"
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#include "7zCrc.h"
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#include "7zDecode.h"
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#define RINOM(x) { if((x) == 0) return SZE_OUTOFMEMORY; }
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void SzArDbExInit(CArchiveDatabaseEx *db)
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{
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SzArchiveDatabaseInit(&db->Database);
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db->FolderStartPackStreamIndex = 0;
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db->PackStreamStartPositions = 0;
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db->FolderStartFileIndex = 0;
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db->FileIndexToFolderIndexMap = 0;
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}
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void SzArDbExFree(CArchiveDatabaseEx *db, void (*freeFunc)(void *))
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{
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freeFunc(db->FolderStartPackStreamIndex);
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freeFunc(db->PackStreamStartPositions);
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freeFunc(db->FolderStartFileIndex);
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freeFunc(db->FileIndexToFolderIndexMap);
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SzArchiveDatabaseFree(&db->Database, freeFunc);
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SzArDbExInit(db);
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}
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/*
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CFileSize GetFolderPackStreamSize(int folderIndex, int streamIndex) const
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{
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return PackSizes[FolderStartPackStreamIndex[folderIndex] + streamIndex];
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}
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CFileSize GetFilePackSize(int fileIndex) const
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{
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int folderIndex = FileIndexToFolderIndexMap[fileIndex];
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if (folderIndex >= 0)
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{
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const CFolder &folderInfo = Folders[folderIndex];
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if (FolderStartFileIndex[folderIndex] == fileIndex)
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return GetFolderFullPackSize(folderIndex);
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}
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return 0;
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}
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*/
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#define MY_ALLOC(T, p, size, allocFunc) { if ((size) == 0) p = 0; else \
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if ((p = (T *)allocFunc((size) * sizeof(T))) == 0) return SZE_OUTOFMEMORY; }
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SZ_RESULT SzArDbExFill(CArchiveDatabaseEx *db, void * (*allocFunc)(size_t size))
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{
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UInt32 startPos = 0;
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CFileSize startPosSize = 0;
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UInt32 i;
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UInt32 folderIndex = 0;
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UInt32 indexInFolder = 0;
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MY_ALLOC(UInt32, db->FolderStartPackStreamIndex, db->Database.NumFolders, allocFunc);
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for(i = 0; i < db->Database.NumFolders; i++)
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{
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db->FolderStartPackStreamIndex[i] = startPos;
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startPos += db->Database.Folders[i].NumPackStreams;
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}
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MY_ALLOC(CFileSize, db->PackStreamStartPositions, db->Database.NumPackStreams, allocFunc);
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for(i = 0; i < db->Database.NumPackStreams; i++)
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{
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db->PackStreamStartPositions[i] = startPosSize;
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startPosSize += db->Database.PackSizes[i];
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}
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MY_ALLOC(UInt32, db->FolderStartFileIndex, db->Database.NumFolders, allocFunc);
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MY_ALLOC(UInt32, db->FileIndexToFolderIndexMap, db->Database.NumFiles, allocFunc);
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for (i = 0; i < db->Database.NumFiles; i++)
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{
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CFileItem *file = db->Database.Files + i;
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int emptyStream = !file->HasStream;
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if (emptyStream && indexInFolder == 0)
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{
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db->FileIndexToFolderIndexMap[i] = (UInt32)-1;
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continue;
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}
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if (indexInFolder == 0)
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{
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/*
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v3.13 incorrectly worked with empty folders
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v4.07: Loop for skipping empty folders
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*/
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for(;;)
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{
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if (folderIndex >= db->Database.NumFolders)
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return SZE_ARCHIVE_ERROR;
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db->FolderStartFileIndex[folderIndex] = i;
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if (db->Database.Folders[folderIndex].NumUnPackStreams != 0)
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break;
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folderIndex++;
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}
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}
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db->FileIndexToFolderIndexMap[i] = folderIndex;
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if (emptyStream)
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continue;
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indexInFolder++;
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if (indexInFolder >= db->Database.Folders[folderIndex].NumUnPackStreams)
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{
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folderIndex++;
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indexInFolder = 0;
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}
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}
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return SZ_OK;
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}
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CFileSize SzArDbGetFolderStreamPos(CArchiveDatabaseEx *db, UInt32 folderIndex, UInt32 indexInFolder)
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{
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return db->ArchiveInfo.DataStartPosition +
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db->PackStreamStartPositions[db->FolderStartPackStreamIndex[folderIndex] + indexInFolder];
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}
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CFileSize SzArDbGetFolderFullPackSize(CArchiveDatabaseEx *db, UInt32 folderIndex)
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{
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UInt32 packStreamIndex = db->FolderStartPackStreamIndex[folderIndex];
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CFolder *folder = db->Database.Folders + folderIndex;
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CFileSize size = 0;
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UInt32 i;
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for (i = 0; i < folder->NumPackStreams; i++)
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size += db->Database.PackSizes[packStreamIndex + i];
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return size;
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}
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/*
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SZ_RESULT SzReadTime(const CObjectVector<CSzByteBuffer> &dataVector,
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CObjectVector<CFileItem> &files, UInt64 type)
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{
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CBoolVector boolVector;
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RINOK(ReadBoolVector2(files.Size(), boolVector))
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CStreamSwitch streamSwitch;
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RINOK(streamSwitch.Set(this, &dataVector));
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for(int i = 0; i < files.Size(); i++)
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{
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CFileItem &file = files[i];
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CArchiveFileTime fileTime;
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bool defined = boolVector[i];
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if (defined)
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{
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UInt32 low, high;
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RINOK(SzReadUInt32(low));
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RINOK(SzReadUInt32(high));
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fileTime.dwLowDateTime = low;
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fileTime.dwHighDateTime = high;
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}
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switch(type)
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{
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case k7zIdCreationTime:
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file.IsCreationTimeDefined = defined;
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if (defined)
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file.CreationTime = fileTime;
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break;
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case k7zIdLastWriteTime:
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file.IsLastWriteTimeDefined = defined;
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if (defined)
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file.LastWriteTime = fileTime;
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break;
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case k7zIdLastAccessTime:
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file.IsLastAccessTimeDefined = defined;
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if (defined)
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file.LastAccessTime = fileTime;
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break;
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}
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}
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return SZ_OK;
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}
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*/
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SZ_RESULT SafeReadDirect(ISzInStream *inStream, Byte *data, size_t size)
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{
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#ifdef _LZMA_IN_CB
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while (size > 0)
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{
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Byte *inBuffer;
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size_t processedSize;
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RINOK(inStream->Read(inStream, (void **)&inBuffer, size, &processedSize));
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if (processedSize == 0 || processedSize > size)
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return SZE_FAIL;
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size -= processedSize;
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do
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{
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*data++ = *inBuffer++;
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}
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while (--processedSize != 0);
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}
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#else
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size_t processedSize;
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RINOK(inStream->Read(inStream, data, size, &processedSize));
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if (processedSize != size)
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return SZE_FAIL;
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#endif
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return SZ_OK;
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}
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SZ_RESULT SafeReadDirectByte(ISzInStream *inStream, Byte *data)
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{
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return SafeReadDirect(inStream, data, 1);
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}
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SZ_RESULT SafeReadDirectUInt32(ISzInStream *inStream, UInt32 *value)
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{
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int i;
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*value = 0;
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for (i = 0; i < 4; i++)
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{
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Byte b;
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RINOK(SafeReadDirectByte(inStream, &b));
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*value |= ((UInt32)b << (8 * i));
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}
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return SZ_OK;
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}
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SZ_RESULT SafeReadDirectUInt64(ISzInStream *inStream, UInt64 *value)
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{
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int i;
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*value = 0;
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for (i = 0; i < 8; i++)
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{
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Byte b;
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RINOK(SafeReadDirectByte(inStream, &b));
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*value |= ((UInt32)b << (8 * i));
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}
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return SZ_OK;
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}
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int TestSignatureCandidate(Byte *testBytes)
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{
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size_t i;
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for (i = 0; i < k7zSignatureSize; i++)
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if (testBytes[i] != k7zSignature[i])
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return 0;
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return 1;
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}
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typedef struct _CSzState
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{
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Byte *Data;
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size_t Size;
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}CSzData;
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SZ_RESULT SzReadByte(CSzData *sd, Byte *b)
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{
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if (sd->Size == 0)
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return SZE_ARCHIVE_ERROR;
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sd->Size--;
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*b = *sd->Data++;
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return SZ_OK;
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}
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SZ_RESULT SzReadBytes(CSzData *sd, Byte *data, size_t size)
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{
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size_t i;
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for (i = 0; i < size; i++)
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{
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RINOK(SzReadByte(sd, data + i));
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}
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return SZ_OK;
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}
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SZ_RESULT SzReadUInt32(CSzData *sd, UInt32 *value)
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{
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int i;
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*value = 0;
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for (i = 0; i < 4; i++)
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{
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Byte b;
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RINOK(SzReadByte(sd, &b));
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*value |= ((UInt32)(b) << (8 * i));
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}
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return SZ_OK;
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}
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SZ_RESULT SzReadNumber(CSzData *sd, UInt64 *value)
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{
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Byte firstByte;
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Byte mask = 0x80;
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int i;
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RINOK(SzReadByte(sd, &firstByte));
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*value = 0;
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for (i = 0; i < 8; i++)
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{
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Byte b;
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if ((firstByte & mask) == 0)
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{
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UInt64 highPart = firstByte & (mask - 1);
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*value += (highPart << (8 * i));
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return SZ_OK;
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}
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RINOK(SzReadByte(sd, &b));
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*value |= ((UInt64)b << (8 * i));
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mask >>= 1;
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}
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return SZ_OK;
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}
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SZ_RESULT SzReadSize(CSzData *sd, CFileSize *value)
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{
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UInt64 value64;
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RINOK(SzReadNumber(sd, &value64));
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*value = (CFileSize)value64;
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return SZ_OK;
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}
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SZ_RESULT SzReadNumber32(CSzData *sd, UInt32 *value)
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{
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UInt64 value64;
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RINOK(SzReadNumber(sd, &value64));
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if (value64 >= 0x80000000)
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return SZE_NOTIMPL;
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if (value64 >= ((UInt64)(1) << ((sizeof(size_t) - 1) * 8 + 2)))
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return SZE_NOTIMPL;
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*value = (UInt32)value64;
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return SZ_OK;
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}
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SZ_RESULT SzReadID(CSzData *sd, UInt64 *value)
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{
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return SzReadNumber(sd, value);
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}
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SZ_RESULT SzSkeepDataSize(CSzData *sd, UInt64 size)
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{
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if (size > sd->Size)
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return SZE_ARCHIVE_ERROR;
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sd->Size -= (size_t)size;
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sd->Data += (size_t)size;
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return SZ_OK;
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}
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SZ_RESULT SzSkeepData(CSzData *sd)
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{
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UInt64 size;
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RINOK(SzReadNumber(sd, &size));
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return SzSkeepDataSize(sd, size);
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}
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SZ_RESULT SzReadArchiveProperties(CSzData *sd)
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{
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for(;;)
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{
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UInt64 type;
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RINOK(SzReadID(sd, &type));
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if (type == k7zIdEnd)
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break;
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SzSkeepData(sd);
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}
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return SZ_OK;
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}
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SZ_RESULT SzWaitAttribute(CSzData *sd, UInt64 attribute)
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{
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for(;;)
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{
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UInt64 type;
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RINOK(SzReadID(sd, &type));
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if (type == attribute)
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return SZ_OK;
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if (type == k7zIdEnd)
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return SZE_ARCHIVE_ERROR;
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RINOK(SzSkeepData(sd));
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}
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}
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SZ_RESULT SzReadBoolVector(CSzData *sd, size_t numItems, Byte **v, void * (*allocFunc)(size_t size))
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{
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Byte b = 0;
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Byte mask = 0;
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size_t i;
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MY_ALLOC(Byte, *v, numItems, allocFunc);
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for(i = 0; i < numItems; i++)
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{
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if (mask == 0)
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{
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RINOK(SzReadByte(sd, &b));
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mask = 0x80;
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}
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(*v)[i] = (Byte)(((b & mask) != 0) ? 1 : 0);
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mask >>= 1;
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}
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return SZ_OK;
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}
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SZ_RESULT SzReadBoolVector2(CSzData *sd, size_t numItems, Byte **v, void * (*allocFunc)(size_t size))
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{
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Byte allAreDefined;
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size_t i;
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RINOK(SzReadByte(sd, &allAreDefined));
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if (allAreDefined == 0)
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return SzReadBoolVector(sd, numItems, v, allocFunc);
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MY_ALLOC(Byte, *v, numItems, allocFunc);
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for(i = 0; i < numItems; i++)
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(*v)[i] = 1;
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return SZ_OK;
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}
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SZ_RESULT SzReadHashDigests(
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CSzData *sd,
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size_t numItems,
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Byte **digestsDefined,
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UInt32 **digests,
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void * (*allocFunc)(size_t size))
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{
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size_t i;
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RINOK(SzReadBoolVector2(sd, numItems, digestsDefined, allocFunc));
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MY_ALLOC(UInt32, *digests, numItems, allocFunc);
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for(i = 0; i < numItems; i++)
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if ((*digestsDefined)[i])
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{
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RINOK(SzReadUInt32(sd, (*digests) + i));
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}
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return SZ_OK;
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}
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SZ_RESULT SzReadPackInfo(
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CSzData *sd,
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CFileSize *dataOffset,
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UInt32 *numPackStreams,
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CFileSize **packSizes,
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Byte **packCRCsDefined,
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UInt32 **packCRCs,
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void * (*allocFunc)(size_t size))
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{
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UInt32 i;
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RINOK(SzReadSize(sd, dataOffset));
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RINOK(SzReadNumber32(sd, numPackStreams));
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RINOK(SzWaitAttribute(sd, k7zIdSize));
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MY_ALLOC(CFileSize, *packSizes, (size_t)*numPackStreams, allocFunc);
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for(i = 0; i < *numPackStreams; i++)
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{
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RINOK(SzReadSize(sd, (*packSizes) + i));
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}
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for(;;)
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{
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UInt64 type;
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RINOK(SzReadID(sd, &type));
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if (type == k7zIdEnd)
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break;
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if (type == k7zIdCRC)
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{
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RINOK(SzReadHashDigests(sd, (size_t)*numPackStreams, packCRCsDefined, packCRCs, allocFunc));
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continue;
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}
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RINOK(SzSkeepData(sd));
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}
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if (*packCRCsDefined == 0)
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{
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MY_ALLOC(Byte, *packCRCsDefined, (size_t)*numPackStreams, allocFunc);
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MY_ALLOC(UInt32, *packCRCs, (size_t)*numPackStreams, allocFunc);
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for(i = 0; i < *numPackStreams; i++)
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{
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(*packCRCsDefined)[i] = 0;
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(*packCRCs)[i] = 0;
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}
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}
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return SZ_OK;
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}
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SZ_RESULT SzReadSwitch(CSzData *sd)
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{
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Byte external;
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RINOK(SzReadByte(sd, &external));
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return (external == 0) ? SZ_OK: SZE_ARCHIVE_ERROR;
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}
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SZ_RESULT SzGetNextFolderItem(CSzData *sd, CFolder *folder, void * (*allocFunc)(size_t size))
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{
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UInt32 numCoders;
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UInt32 numBindPairs;
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UInt32 numPackedStreams;
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UInt32 i;
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UInt32 numInStreams = 0;
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UInt32 numOutStreams = 0;
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RINOK(SzReadNumber32(sd, &numCoders));
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folder->NumCoders = numCoders;
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MY_ALLOC(CCoderInfo, folder->Coders, (size_t)numCoders, allocFunc);
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for (i = 0; i < numCoders; i++)
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SzCoderInfoInit(folder->Coders + i);
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for (i = 0; i < numCoders; i++)
|
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{
|
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Byte mainByte;
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CCoderInfo *coder = folder->Coders + i;
|
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{
|
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RINOK(SzReadByte(sd, &mainByte));
|
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coder->MethodID.IDSize = (Byte)(mainByte & 0xF);
|
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RINOK(SzReadBytes(sd, coder->MethodID.ID, coder->MethodID.IDSize));
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if ((mainByte & 0x10) != 0)
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{
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RINOK(SzReadNumber32(sd, &coder->NumInStreams));
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RINOK(SzReadNumber32(sd, &coder->NumOutStreams));
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}
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else
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{
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coder->NumInStreams = 1;
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coder->NumOutStreams = 1;
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}
|
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if ((mainByte & 0x20) != 0)
|
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{
|
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UInt64 propertiesSize = 0;
|
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RINOK(SzReadNumber(sd, &propertiesSize));
|
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if (!SzByteBufferCreate(&coder->Properties, (size_t)propertiesSize, allocFunc))
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return SZE_OUTOFMEMORY;
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RINOK(SzReadBytes(sd, coder->Properties.Items, (size_t)propertiesSize));
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}
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}
|
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while ((mainByte & 0x80) != 0)
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{
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RINOK(SzReadByte(sd, &mainByte));
|
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RINOK(SzSkeepDataSize(sd, (mainByte & 0xF)));
|
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if ((mainByte & 0x10) != 0)
|
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{
|
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UInt32 n;
|
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RINOK(SzReadNumber32(sd, &n));
|
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RINOK(SzReadNumber32(sd, &n));
|
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}
|
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if ((mainByte & 0x20) != 0)
|
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{
|
|
UInt64 propertiesSize = 0;
|
|
RINOK(SzReadNumber(sd, &propertiesSize));
|
|
RINOK(SzSkeepDataSize(sd, propertiesSize));
|
|
}
|
|
}
|
|
numInStreams += (UInt32)coder->NumInStreams;
|
|
numOutStreams += (UInt32)coder->NumOutStreams;
|
|
}
|
|
|
|
numBindPairs = numOutStreams - 1;
|
|
folder->NumBindPairs = numBindPairs;
|
|
|
|
|
|
MY_ALLOC(CBindPair, folder->BindPairs, (size_t)numBindPairs, allocFunc);
|
|
|
|
for (i = 0; i < numBindPairs; i++)
|
|
{
|
|
CBindPair *bindPair = folder->BindPairs + i;;
|
|
RINOK(SzReadNumber32(sd, &bindPair->InIndex));
|
|
RINOK(SzReadNumber32(sd, &bindPair->OutIndex));
|
|
}
|
|
|
|
numPackedStreams = numInStreams - (UInt32)numBindPairs;
|
|
|
|
folder->NumPackStreams = numPackedStreams;
|
|
MY_ALLOC(UInt32, folder->PackStreams, (size_t)numPackedStreams, allocFunc);
|
|
|
|
if (numPackedStreams == 1)
|
|
{
|
|
UInt32 j;
|
|
UInt32 pi = 0;
|
|
for (j = 0; j < numInStreams; j++)
|
|
if (SzFolderFindBindPairForInStream(folder, j) < 0)
|
|
{
|
|
folder->PackStreams[pi++] = j;
|
|
break;
|
|
}
|
|
}
|
|
else
|
|
for(i = 0; i < numPackedStreams; i++)
|
|
{
|
|
RINOK(SzReadNumber32(sd, folder->PackStreams + i));
|
|
}
|
|
return SZ_OK;
|
|
}
|
|
|
|
SZ_RESULT SzReadUnPackInfo(
|
|
CSzData *sd,
|
|
UInt32 *numFolders,
|
|
CFolder **folders, /* for allocFunc */
|
|
void * (*allocFunc)(size_t size),
|
|
ISzAlloc *allocTemp)
|
|
{
|
|
UInt32 i;
|
|
RINOK(SzWaitAttribute(sd, k7zIdFolder));
|
|
RINOK(SzReadNumber32(sd, numFolders));
|
|
{
|
|
RINOK(SzReadSwitch(sd));
|
|
|
|
MY_ALLOC(CFolder, *folders, (size_t)*numFolders, allocFunc);
|
|
|
|
for(i = 0; i < *numFolders; i++)
|
|
SzFolderInit((*folders) + i);
|
|
|
|
for(i = 0; i < *numFolders; i++)
|
|
{
|
|
RINOK(SzGetNextFolderItem(sd, (*folders) + i, allocFunc));
|
|
}
|
|
}
|
|
|
|
RINOK(SzWaitAttribute(sd, k7zIdCodersUnPackSize));
|
|
|
|
for(i = 0; i < *numFolders; i++)
|
|
{
|
|
UInt32 j;
|
|
CFolder *folder = (*folders) + i;
|
|
UInt32 numOutStreams = SzFolderGetNumOutStreams(folder);
|
|
|
|
MY_ALLOC(CFileSize, folder->UnPackSizes, (size_t)numOutStreams, allocFunc);
|
|
|
|
for(j = 0; j < numOutStreams; j++)
|
|
{
|
|
RINOK(SzReadSize(sd, folder->UnPackSizes + j));
|
|
}
|
|
}
|
|
|
|
for(;;)
|
|
{
|
|
UInt64 type;
|
|
RINOK(SzReadID(sd, &type));
|
|
if (type == k7zIdEnd)
|
|
return SZ_OK;
|
|
if (type == k7zIdCRC)
|
|
{
|
|
SZ_RESULT res;
|
|
Byte *crcsDefined = 0;
|
|
UInt32 *crcs = 0;
|
|
res = SzReadHashDigests(sd, *numFolders, &crcsDefined, &crcs, allocTemp->Alloc);
|
|
if (res == SZ_OK)
|
|
{
|
|
for(i = 0; i < *numFolders; i++)
|
|
{
|
|
CFolder *folder = (*folders) + i;
|
|
folder->UnPackCRCDefined = crcsDefined[i];
|
|
folder->UnPackCRC = crcs[i];
|
|
}
|
|
}
|
|
allocTemp->Free(crcs);
|
|
allocTemp->Free(crcsDefined);
|
|
RINOK(res);
|
|
continue;
|
|
}
|
|
RINOK(SzSkeepData(sd));
|
|
}
|
|
}
|
|
|
|
SZ_RESULT SzReadSubStreamsInfo(
|
|
CSzData *sd,
|
|
UInt32 numFolders,
|
|
CFolder *folders,
|
|
UInt32 *numUnPackStreams,
|
|
CFileSize **unPackSizes,
|
|
Byte **digestsDefined,
|
|
UInt32 **digests,
|
|
ISzAlloc *allocTemp)
|
|
{
|
|
UInt64 type = 0;
|
|
UInt32 i;
|
|
UInt32 si = 0;
|
|
UInt32 numDigests = 0;
|
|
|
|
for(i = 0; i < numFolders; i++)
|
|
folders[i].NumUnPackStreams = 1;
|
|
*numUnPackStreams = numFolders;
|
|
|
|
for(;;)
|
|
{
|
|
RINOK(SzReadID(sd, &type));
|
|
if (type == k7zIdNumUnPackStream)
|
|
{
|
|
*numUnPackStreams = 0;
|
|
for(i = 0; i < numFolders; i++)
|
|
{
|
|
UInt32 numStreams;
|
|
RINOK(SzReadNumber32(sd, &numStreams));
|
|
folders[i].NumUnPackStreams = numStreams;
|
|
*numUnPackStreams += numStreams;
|
|
}
|
|
continue;
|
|
}
|
|
if (type == k7zIdCRC || type == k7zIdSize)
|
|
break;
|
|
if (type == k7zIdEnd)
|
|
break;
|
|
RINOK(SzSkeepData(sd));
|
|
}
|
|
|
|
if (*numUnPackStreams == 0)
|
|
{
|
|
*unPackSizes = 0;
|
|
*digestsDefined = 0;
|
|
*digests = 0;
|
|
}
|
|
else
|
|
{
|
|
*unPackSizes = (CFileSize *)allocTemp->Alloc((size_t)*numUnPackStreams * sizeof(CFileSize));
|
|
RINOM(*unPackSizes);
|
|
*digestsDefined = (Byte *)allocTemp->Alloc((size_t)*numUnPackStreams * sizeof(Byte));
|
|
RINOM(*digestsDefined);
|
|
*digests = (UInt32 *)allocTemp->Alloc((size_t)*numUnPackStreams * sizeof(UInt32));
|
|
RINOM(*digests);
|
|
}
|
|
|
|
for(i = 0; i < numFolders; i++)
|
|
{
|
|
/*
|
|
v3.13 incorrectly worked with empty folders
|
|
v4.07: we check that folder is empty
|
|
*/
|
|
CFileSize sum = 0;
|
|
UInt32 j;
|
|
UInt32 numSubstreams = folders[i].NumUnPackStreams;
|
|
if (numSubstreams == 0)
|
|
continue;
|
|
if (type == k7zIdSize)
|
|
for (j = 1; j < numSubstreams; j++)
|
|
{
|
|
CFileSize size;
|
|
RINOK(SzReadSize(sd, &size));
|
|
(*unPackSizes)[si++] = size;
|
|
sum += size;
|
|
}
|
|
(*unPackSizes)[si++] = SzFolderGetUnPackSize(folders + i) - sum;
|
|
}
|
|
if (type == k7zIdSize)
|
|
{
|
|
RINOK(SzReadID(sd, &type));
|
|
}
|
|
|
|
for(i = 0; i < *numUnPackStreams; i++)
|
|
{
|
|
(*digestsDefined)[i] = 0;
|
|
(*digests)[i] = 0;
|
|
}
|
|
|
|
|
|
for(i = 0; i < numFolders; i++)
|
|
{
|
|
UInt32 numSubstreams = folders[i].NumUnPackStreams;
|
|
if (numSubstreams != 1 || !folders[i].UnPackCRCDefined)
|
|
numDigests += numSubstreams;
|
|
}
|
|
|
|
|
|
si = 0;
|
|
for(;;)
|
|
{
|
|
if (type == k7zIdCRC)
|
|
{
|
|
int digestIndex = 0;
|
|
Byte *digestsDefined2 = 0;
|
|
UInt32 *digests2 = 0;
|
|
SZ_RESULT res = SzReadHashDigests(sd, numDigests, &digestsDefined2, &digests2, allocTemp->Alloc);
|
|
if (res == SZ_OK)
|
|
{
|
|
for (i = 0; i < numFolders; i++)
|
|
{
|
|
CFolder *folder = folders + i;
|
|
UInt32 numSubstreams = folder->NumUnPackStreams;
|
|
if (numSubstreams == 1 && folder->UnPackCRCDefined)
|
|
{
|
|
(*digestsDefined)[si] = 1;
|
|
(*digests)[si] = folder->UnPackCRC;
|
|
si++;
|
|
}
|
|
else
|
|
{
|
|
UInt32 j;
|
|
for (j = 0; j < numSubstreams; j++, digestIndex++)
|
|
{
|
|
(*digestsDefined)[si] = digestsDefined2[digestIndex];
|
|
(*digests)[si] = digests2[digestIndex];
|
|
si++;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
allocTemp->Free(digestsDefined2);
|
|
allocTemp->Free(digests2);
|
|
RINOK(res);
|
|
}
|
|
else if (type == k7zIdEnd)
|
|
return SZ_OK;
|
|
else
|
|
{
|
|
RINOK(SzSkeepData(sd));
|
|
}
|
|
RINOK(SzReadID(sd, &type));
|
|
}
|
|
}
|
|
|
|
|
|
SZ_RESULT SzReadStreamsInfo(
|
|
CSzData *sd,
|
|
CFileSize *dataOffset,
|
|
CArchiveDatabase *db,
|
|
UInt32 *numUnPackStreams,
|
|
CFileSize **unPackSizes, /* allocTemp */
|
|
Byte **digestsDefined, /* allocTemp */
|
|
UInt32 **digests, /* allocTemp */
|
|
void * (*allocFunc)(size_t size),
|
|
ISzAlloc *allocTemp)
|
|
{
|
|
for(;;)
|
|
{
|
|
UInt64 type;
|
|
RINOK(SzReadID(sd, &type));
|
|
if ((UInt64)(int)type != type)
|
|
return SZE_FAIL;
|
|
switch((int)type)
|
|
{
|
|
case k7zIdEnd:
|
|
return SZ_OK;
|
|
case k7zIdPackInfo:
|
|
{
|
|
RINOK(SzReadPackInfo(sd, dataOffset, &db->NumPackStreams,
|
|
&db->PackSizes, &db->PackCRCsDefined, &db->PackCRCs, allocFunc));
|
|
break;
|
|
}
|
|
case k7zIdUnPackInfo:
|
|
{
|
|
RINOK(SzReadUnPackInfo(sd, &db->NumFolders, &db->Folders, allocFunc, allocTemp));
|
|
break;
|
|
}
|
|
case k7zIdSubStreamsInfo:
|
|
{
|
|
RINOK(SzReadSubStreamsInfo(sd, db->NumFolders, db->Folders,
|
|
numUnPackStreams, unPackSizes, digestsDefined, digests, allocTemp));
|
|
break;
|
|
}
|
|
default:
|
|
return SZE_FAIL;
|
|
}
|
|
}
|
|
}
|
|
|
|
Byte kUtf8Limits[5] = { 0xC0, 0xE0, 0xF0, 0xF8, 0xFC };
|
|
|
|
SZ_RESULT SzReadFileNames(CSzData *sd, UInt32 numFiles, CFileItem *files,
|
|
void * (*allocFunc)(size_t size))
|
|
{
|
|
UInt32 i;
|
|
for(i = 0; i < numFiles; i++)
|
|
{
|
|
UInt32 len = 0;
|
|
UInt32 pos = 0;
|
|
CFileItem *file = files + i;
|
|
while(pos + 2 <= sd->Size)
|
|
{
|
|
int numAdds;
|
|
UInt32 value = (UInt32)(sd->Data[pos] | (((UInt32)sd->Data[pos + 1]) << 8));
|
|
pos += 2;
|
|
len++;
|
|
if (value == 0)
|
|
break;
|
|
if (value < 0x80)
|
|
continue;
|
|
if (value >= 0xD800 && value < 0xE000)
|
|
{
|
|
UInt32 c2;
|
|
if (value >= 0xDC00)
|
|
return SZE_ARCHIVE_ERROR;
|
|
if (pos + 2 > sd->Size)
|
|
return SZE_ARCHIVE_ERROR;
|
|
c2 = (UInt32)(sd->Data[pos] | (((UInt32)sd->Data[pos + 1]) << 8));
|
|
pos += 2;
|
|
if (c2 < 0xDC00 || c2 >= 0xE000)
|
|
return SZE_ARCHIVE_ERROR;
|
|
value = ((value - 0xD800) << 10) | (c2 - 0xDC00);
|
|
}
|
|
for (numAdds = 1; numAdds < 5; numAdds++)
|
|
if (value < (((UInt32)1) << (numAdds * 5 + 6)))
|
|
break;
|
|
len += numAdds;
|
|
}
|
|
|
|
MY_ALLOC(char, file->Name, (size_t)len, allocFunc);
|
|
|
|
len = 0;
|
|
while(2 <= sd->Size)
|
|
{
|
|
int numAdds;
|
|
UInt32 value = (UInt32)(sd->Data[0] | (((UInt32)sd->Data[1]) << 8));
|
|
SzSkeepDataSize(sd, 2);
|
|
if (value < 0x80)
|
|
{
|
|
file->Name[len++] = (char)value;
|
|
if (value == 0)
|
|
break;
|
|
continue;
|
|
}
|
|
if (value >= 0xD800 && value < 0xE000)
|
|
{
|
|
UInt32 c2 = (UInt32)(sd->Data[0] | (((UInt32)sd->Data[1]) << 8));
|
|
SzSkeepDataSize(sd, 2);
|
|
value = ((value - 0xD800) << 10) | (c2 - 0xDC00);
|
|
}
|
|
for (numAdds = 1; numAdds < 5; numAdds++)
|
|
if (value < (((UInt32)1) << (numAdds * 5 + 6)))
|
|
break;
|
|
file->Name[len++] = (char)(kUtf8Limits[numAdds - 1] + (value >> (6 * numAdds)));
|
|
do
|
|
{
|
|
numAdds--;
|
|
file->Name[len++] = (char)(0x80 + ((value >> (6 * numAdds)) & 0x3F));
|
|
}
|
|
while(numAdds > 0);
|
|
|
|
len += numAdds;
|
|
}
|
|
}
|
|
return SZ_OK;
|
|
}
|
|
|
|
SZ_RESULT SzReadHeader2(
|
|
CSzData *sd,
|
|
CArchiveDatabaseEx *db, /* allocMain */
|
|
CFileSize **unPackSizes, /* allocTemp */
|
|
Byte **digestsDefined, /* allocTemp */
|
|
UInt32 **digests, /* allocTemp */
|
|
Byte **emptyStreamVector, /* allocTemp */
|
|
Byte **emptyFileVector, /* allocTemp */
|
|
ISzAlloc *allocMain,
|
|
ISzAlloc *allocTemp)
|
|
{
|
|
UInt64 type;
|
|
UInt32 numUnPackStreams = 0;
|
|
UInt32 numFiles = 0;
|
|
CFileItem *files = 0;
|
|
UInt32 numEmptyStreams = 0;
|
|
UInt32 i;
|
|
|
|
RINOK(SzReadID(sd, &type));
|
|
|
|
if (type == k7zIdArchiveProperties)
|
|
{
|
|
RINOK(SzReadArchiveProperties(sd));
|
|
RINOK(SzReadID(sd, &type));
|
|
}
|
|
|
|
|
|
if (type == k7zIdMainStreamsInfo)
|
|
{
|
|
RINOK(SzReadStreamsInfo(sd,
|
|
&db->ArchiveInfo.DataStartPosition,
|
|
&db->Database,
|
|
&numUnPackStreams,
|
|
unPackSizes,
|
|
digestsDefined,
|
|
digests, allocMain->Alloc, allocTemp));
|
|
db->ArchiveInfo.DataStartPosition += db->ArchiveInfo.StartPositionAfterHeader;
|
|
RINOK(SzReadID(sd, &type));
|
|
}
|
|
|
|
if (type == k7zIdEnd)
|
|
return SZ_OK;
|
|
if (type != k7zIdFilesInfo)
|
|
return SZE_ARCHIVE_ERROR;
|
|
|
|
RINOK(SzReadNumber32(sd, &numFiles));
|
|
db->Database.NumFiles = numFiles;
|
|
|
|
MY_ALLOC(CFileItem, files, (size_t)numFiles, allocMain->Alloc);
|
|
|
|
db->Database.Files = files;
|
|
for(i = 0; i < numFiles; i++)
|
|
SzFileInit(files + i);
|
|
|
|
for(;;)
|
|
{
|
|
UInt64 type;
|
|
UInt64 size;
|
|
RINOK(SzReadID(sd, &type));
|
|
if (type == k7zIdEnd)
|
|
break;
|
|
RINOK(SzReadNumber(sd, &size));
|
|
|
|
if ((UInt64)(int)type != type)
|
|
{
|
|
RINOK(SzSkeepDataSize(sd, size));
|
|
}
|
|
else
|
|
switch((int)type)
|
|
{
|
|
case k7zIdName:
|
|
{
|
|
RINOK(SzReadSwitch(sd));
|
|
RINOK(SzReadFileNames(sd, numFiles, files, allocMain->Alloc))
|
|
break;
|
|
}
|
|
case k7zIdEmptyStream:
|
|
{
|
|
RINOK(SzReadBoolVector(sd, numFiles, emptyStreamVector, allocTemp->Alloc));
|
|
numEmptyStreams = 0;
|
|
for (i = 0; i < numFiles; i++)
|
|
if ((*emptyStreamVector)[i])
|
|
numEmptyStreams++;
|
|
break;
|
|
}
|
|
case k7zIdEmptyFile:
|
|
{
|
|
RINOK(SzReadBoolVector(sd, numEmptyStreams, emptyFileVector, allocTemp->Alloc));
|
|
break;
|
|
}
|
|
default:
|
|
{
|
|
RINOK(SzSkeepDataSize(sd, size));
|
|
}
|
|
}
|
|
}
|
|
|
|
{
|
|
UInt32 emptyFileIndex = 0;
|
|
UInt32 sizeIndex = 0;
|
|
for(i = 0; i < numFiles; i++)
|
|
{
|
|
CFileItem *file = files + i;
|
|
file->IsAnti = 0;
|
|
if (*emptyStreamVector == 0)
|
|
file->HasStream = 1;
|
|
else
|
|
file->HasStream = (Byte)((*emptyStreamVector)[i] ? 0 : 1);
|
|
if(file->HasStream)
|
|
{
|
|
file->IsDirectory = 0;
|
|
file->Size = (*unPackSizes)[sizeIndex];
|
|
file->FileCRC = (*digests)[sizeIndex];
|
|
file->IsFileCRCDefined = (Byte)(*digestsDefined)[sizeIndex];
|
|
sizeIndex++;
|
|
}
|
|
else
|
|
{
|
|
if (*emptyFileVector == 0)
|
|
file->IsDirectory = 1;
|
|
else
|
|
file->IsDirectory = (Byte)((*emptyFileVector)[emptyFileIndex] ? 0 : 1);
|
|
emptyFileIndex++;
|
|
file->Size = 0;
|
|
file->IsFileCRCDefined = 0;
|
|
}
|
|
}
|
|
}
|
|
return SzArDbExFill(db, allocMain->Alloc);
|
|
}
|
|
|
|
SZ_RESULT SzReadHeader(
|
|
CSzData *sd,
|
|
CArchiveDatabaseEx *db,
|
|
ISzAlloc *allocMain,
|
|
ISzAlloc *allocTemp)
|
|
{
|
|
CFileSize *unPackSizes = 0;
|
|
Byte *digestsDefined = 0;
|
|
UInt32 *digests = 0;
|
|
Byte *emptyStreamVector = 0;
|
|
Byte *emptyFileVector = 0;
|
|
SZ_RESULT res = SzReadHeader2(sd, db,
|
|
&unPackSizes, &digestsDefined, &digests,
|
|
&emptyStreamVector, &emptyFileVector,
|
|
allocMain, allocTemp);
|
|
allocTemp->Free(unPackSizes);
|
|
allocTemp->Free(digestsDefined);
|
|
allocTemp->Free(digests);
|
|
allocTemp->Free(emptyStreamVector);
|
|
allocTemp->Free(emptyFileVector);
|
|
return res;
|
|
}
|
|
|
|
SZ_RESULT SzReadAndDecodePackedStreams2(
|
|
ISzInStream *inStream,
|
|
CSzData *sd,
|
|
CSzByteBuffer *outBuffer,
|
|
CFileSize baseOffset,
|
|
CArchiveDatabase *db,
|
|
CFileSize **unPackSizes,
|
|
Byte **digestsDefined,
|
|
UInt32 **digests,
|
|
#ifndef _LZMA_IN_CB
|
|
Byte **inBuffer,
|
|
#endif
|
|
ISzAlloc *allocTemp)
|
|
{
|
|
|
|
UInt32 numUnPackStreams = 0;
|
|
CFileSize dataStartPos;
|
|
CFolder *folder;
|
|
#ifndef _LZMA_IN_CB
|
|
CFileSize packSize = 0;
|
|
UInt32 i = 0;
|
|
#endif
|
|
CFileSize unPackSize;
|
|
size_t outRealSize;
|
|
SZ_RESULT res;
|
|
|
|
RINOK(SzReadStreamsInfo(sd, &dataStartPos, db,
|
|
&numUnPackStreams, unPackSizes, digestsDefined, digests,
|
|
allocTemp->Alloc, allocTemp));
|
|
|
|
dataStartPos += baseOffset;
|
|
if (db->NumFolders != 1)
|
|
return SZE_ARCHIVE_ERROR;
|
|
|
|
folder = db->Folders;
|
|
unPackSize = SzFolderGetUnPackSize(folder);
|
|
|
|
RINOK(inStream->Seek(inStream, dataStartPos));
|
|
|
|
#ifndef _LZMA_IN_CB
|
|
for (i = 0; i < db->NumPackStreams; i++)
|
|
packSize += db->PackSizes[i];
|
|
|
|
MY_ALLOC(Byte, *inBuffer, (size_t)packSize, allocTemp->Alloc);
|
|
|
|
RINOK(SafeReadDirect(inStream, *inBuffer, (size_t)packSize));
|
|
#endif
|
|
|
|
if (!SzByteBufferCreate(outBuffer, (size_t)unPackSize, allocTemp->Alloc))
|
|
return SZE_OUTOFMEMORY;
|
|
|
|
res = SzDecode(db->PackSizes, folder,
|
|
#ifdef _LZMA_IN_CB
|
|
inStream,
|
|
#else
|
|
*inBuffer,
|
|
#endif
|
|
outBuffer->Items, (size_t)unPackSize,
|
|
&outRealSize, allocTemp);
|
|
RINOK(res)
|
|
if (outRealSize != (UInt32)unPackSize)
|
|
return SZE_FAIL;
|
|
if (folder->UnPackCRCDefined)
|
|
if (!CrcVerifyDigest(folder->UnPackCRC, outBuffer->Items, (size_t)unPackSize))
|
|
return SZE_FAIL;
|
|
return SZ_OK;
|
|
}
|
|
|
|
SZ_RESULT SzReadAndDecodePackedStreams(
|
|
ISzInStream *inStream,
|
|
CSzData *sd,
|
|
CSzByteBuffer *outBuffer,
|
|
CFileSize baseOffset,
|
|
ISzAlloc *allocTemp)
|
|
{
|
|
CArchiveDatabase db;
|
|
CFileSize *unPackSizes = 0;
|
|
Byte *digestsDefined = 0;
|
|
UInt32 *digests = 0;
|
|
#ifndef _LZMA_IN_CB
|
|
Byte *inBuffer = 0;
|
|
#endif
|
|
SZ_RESULT res;
|
|
SzArchiveDatabaseInit(&db);
|
|
res = SzReadAndDecodePackedStreams2(inStream, sd, outBuffer, baseOffset,
|
|
&db, &unPackSizes, &digestsDefined, &digests,
|
|
#ifndef _LZMA_IN_CB
|
|
&inBuffer,
|
|
#endif
|
|
allocTemp);
|
|
SzArchiveDatabaseFree(&db, allocTemp->Free);
|
|
allocTemp->Free(unPackSizes);
|
|
allocTemp->Free(digestsDefined);
|
|
allocTemp->Free(digests);
|
|
#ifndef _LZMA_IN_CB
|
|
allocTemp->Free(inBuffer);
|
|
#endif
|
|
return res;
|
|
}
|
|
|
|
SZ_RESULT SzArchiveOpen2(
|
|
ISzInStream *inStream,
|
|
CArchiveDatabaseEx *db,
|
|
ISzAlloc *allocMain,
|
|
ISzAlloc *allocTemp)
|
|
{
|
|
Byte signature[k7zSignatureSize];
|
|
Byte version;
|
|
UInt32 crcFromArchive;
|
|
UInt64 nextHeaderOffset;
|
|
UInt64 nextHeaderSize;
|
|
UInt32 nextHeaderCRC;
|
|
UInt32 crc;
|
|
CFileSize pos = 0;
|
|
CSzByteBuffer buffer;
|
|
CSzData sd;
|
|
SZ_RESULT res;
|
|
|
|
RINOK(SafeReadDirect(inStream, signature, k7zSignatureSize));
|
|
|
|
if (!TestSignatureCandidate(signature))
|
|
return SZE_ARCHIVE_ERROR;
|
|
|
|
/*
|
|
db.Clear();
|
|
db.ArchiveInfo.StartPosition = _arhiveBeginStreamPosition;
|
|
*/
|
|
RINOK(SafeReadDirectByte(inStream, &version));
|
|
if (version != k7zMajorVersion)
|
|
return SZE_ARCHIVE_ERROR;
|
|
RINOK(SafeReadDirectByte(inStream, &version));
|
|
|
|
RINOK(SafeReadDirectUInt32(inStream, &crcFromArchive));
|
|
|
|
CrcInit(&crc);
|
|
RINOK(SafeReadDirectUInt64(inStream, &nextHeaderOffset));
|
|
CrcUpdateUInt64(&crc, nextHeaderOffset);
|
|
RINOK(SafeReadDirectUInt64(inStream, &nextHeaderSize));
|
|
CrcUpdateUInt64(&crc, nextHeaderSize);
|
|
RINOK(SafeReadDirectUInt32(inStream, &nextHeaderCRC));
|
|
CrcUpdateUInt32(&crc, nextHeaderCRC);
|
|
|
|
pos = k7zStartHeaderSize;
|
|
db->ArchiveInfo.StartPositionAfterHeader = pos;
|
|
|
|
if (CrcGetDigest(&crc) != crcFromArchive)
|
|
return SZE_ARCHIVE_ERROR;
|
|
|
|
if (nextHeaderSize == 0)
|
|
return SZ_OK;
|
|
|
|
RINOK(inStream->Seek(inStream, (CFileSize)(pos + nextHeaderOffset)));
|
|
|
|
if (!SzByteBufferCreate(&buffer, (size_t)nextHeaderSize, allocTemp->Alloc))
|
|
return SZE_OUTOFMEMORY;
|
|
|
|
res = SafeReadDirect(inStream, buffer.Items, (size_t)nextHeaderSize);
|
|
if (res == SZ_OK)
|
|
{
|
|
if (CrcVerifyDigest(nextHeaderCRC, buffer.Items, (UInt32)nextHeaderSize))
|
|
{
|
|
for(;;)
|
|
{
|
|
UInt64 type;
|
|
sd.Data = buffer.Items;
|
|
sd.Size = buffer.Capacity;
|
|
res = SzReadID(&sd, &type);
|
|
if (res != SZ_OK)
|
|
break;
|
|
if (type == k7zIdHeader)
|
|
{
|
|
res = SzReadHeader(&sd, db, allocMain, allocTemp);
|
|
break;
|
|
}
|
|
if (type != k7zIdEncodedHeader)
|
|
{
|
|
res = SZE_ARCHIVE_ERROR;
|
|
break;
|
|
}
|
|
{
|
|
CSzByteBuffer outBuffer;
|
|
res = SzReadAndDecodePackedStreams(inStream, &sd, &outBuffer,
|
|
db->ArchiveInfo.StartPositionAfterHeader,
|
|
allocTemp);
|
|
if (res != SZ_OK)
|
|
{
|
|
SzByteBufferFree(&outBuffer, allocTemp->Free);
|
|
break;
|
|
}
|
|
SzByteBufferFree(&buffer, allocTemp->Free);
|
|
buffer.Items = outBuffer.Items;
|
|
buffer.Capacity = outBuffer.Capacity;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
SzByteBufferFree(&buffer, allocTemp->Free);
|
|
return res;
|
|
}
|
|
|
|
SZ_RESULT SzArchiveOpen(
|
|
ISzInStream *inStream,
|
|
CArchiveDatabaseEx *db,
|
|
ISzAlloc *allocMain,
|
|
ISzAlloc *allocTemp)
|
|
{
|
|
SZ_RESULT res = SzArchiveOpen2(inStream, db, allocMain, allocTemp);
|
|
if (res != SZ_OK)
|
|
SzArDbExFree(db, allocMain->Free);
|
|
return res;
|
|
}
|