diff options
Diffstat (limited to 'other-licenses/7zstub/src/C/7zArcIn.c')
| -rw-r--r-- | other-licenses/7zstub/src/C/7zArcIn.c | 1771 |
1 files changed, 1771 insertions, 0 deletions
diff --git a/other-licenses/7zstub/src/C/7zArcIn.c b/other-licenses/7zstub/src/C/7zArcIn.c new file mode 100644 index 000000000..70d7175e3 --- /dev/null +++ b/other-licenses/7zstub/src/C/7zArcIn.c @@ -0,0 +1,1771 @@ +/* 7zArcIn.c -- 7z Input functions
+2017-04-03 : Igor Pavlov : Public domain */
+
+#include "Precomp.h"
+
+#include <string.h>
+
+#include "7z.h"
+#include "7zBuf.h"
+#include "7zCrc.h"
+#include "CpuArch.h"
+
+#define MY_ALLOC(T, p, size, alloc) { \
+ if ((p = (T *)ISzAlloc_Alloc(alloc, (size) * sizeof(T))) == NULL) return SZ_ERROR_MEM; }
+
+#define MY_ALLOC_ZE(T, p, size, alloc) { if ((size) == 0) p = NULL; else MY_ALLOC(T, p, size, alloc) }
+
+#define MY_ALLOC_AND_CPY(to, size, from, alloc) \
+ { MY_ALLOC(Byte, to, size, alloc); memcpy(to, from, size); }
+
+#define MY_ALLOC_ZE_AND_CPY(to, size, from, alloc) \
+ { if ((size) == 0) p = NULL; else { MY_ALLOC_AND_CPY(to, size, from, alloc) } }
+
+#define k7zMajorVersion 0
+
+enum EIdEnum
+{
+ k7zIdEnd,
+ k7zIdHeader,
+ k7zIdArchiveProperties,
+ k7zIdAdditionalStreamsInfo,
+ k7zIdMainStreamsInfo,
+ k7zIdFilesInfo,
+ k7zIdPackInfo,
+ k7zIdUnpackInfo,
+ k7zIdSubStreamsInfo,
+ k7zIdSize,
+ k7zIdCRC,
+ k7zIdFolder,
+ k7zIdCodersUnpackSize,
+ k7zIdNumUnpackStream,
+ k7zIdEmptyStream,
+ k7zIdEmptyFile,
+ k7zIdAnti,
+ k7zIdName,
+ k7zIdCTime,
+ k7zIdATime,
+ k7zIdMTime,
+ k7zIdWinAttrib,
+ k7zIdComment,
+ k7zIdEncodedHeader,
+ k7zIdStartPos,
+ k7zIdDummy
+ // k7zNtSecure,
+ // k7zParent,
+ // k7zIsReal
+};
+
+const Byte k7zSignature[k7zSignatureSize] = {'7', 'z', 0xBC, 0xAF, 0x27, 0x1C};
+
+#define SzBitUi32s_Init(p) { (p)->Defs = NULL; (p)->Vals = NULL; }
+
+static SRes SzBitUi32s_Alloc(CSzBitUi32s *p, size_t num, ISzAllocPtr alloc)
+{
+ if (num == 0)
+ {
+ p->Defs = NULL;
+ p->Vals = NULL;
+ }
+ else
+ {
+ MY_ALLOC(Byte, p->Defs, (num + 7) >> 3, alloc);
+ MY_ALLOC(UInt32, p->Vals, num, alloc);
+ }
+ return SZ_OK;
+}
+
+void SzBitUi32s_Free(CSzBitUi32s *p, ISzAllocPtr alloc)
+{
+ ISzAlloc_Free(alloc, p->Defs); p->Defs = NULL;
+ ISzAlloc_Free(alloc, p->Vals); p->Vals = NULL;
+}
+
+#define SzBitUi64s_Init(p) { (p)->Defs = NULL; (p)->Vals = NULL; }
+
+void SzBitUi64s_Free(CSzBitUi64s *p, ISzAllocPtr alloc)
+{
+ ISzAlloc_Free(alloc, p->Defs); p->Defs = NULL;
+ ISzAlloc_Free(alloc, p->Vals); p->Vals = NULL;
+}
+
+
+static void SzAr_Init(CSzAr *p)
+{
+ p->NumPackStreams = 0;
+ p->NumFolders = 0;
+
+ p->PackPositions = NULL;
+ SzBitUi32s_Init(&p->FolderCRCs);
+
+ p->FoCodersOffsets = NULL;
+ p->FoStartPackStreamIndex = NULL;
+ p->FoToCoderUnpackSizes = NULL;
+ p->FoToMainUnpackSizeIndex = NULL;
+ p->CoderUnpackSizes = NULL;
+
+ p->CodersData = NULL;
+}
+
+static void SzAr_Free(CSzAr *p, ISzAllocPtr alloc)
+{
+ ISzAlloc_Free(alloc, p->PackPositions);
+ SzBitUi32s_Free(&p->FolderCRCs, alloc);
+
+ ISzAlloc_Free(alloc, p->FoCodersOffsets);
+ ISzAlloc_Free(alloc, p->FoStartPackStreamIndex);
+ ISzAlloc_Free(alloc, p->FoToCoderUnpackSizes);
+ ISzAlloc_Free(alloc, p->FoToMainUnpackSizeIndex);
+ ISzAlloc_Free(alloc, p->CoderUnpackSizes);
+
+ ISzAlloc_Free(alloc, p->CodersData);
+
+ SzAr_Init(p);
+}
+
+
+void SzArEx_Init(CSzArEx *p)
+{
+ SzAr_Init(&p->db);
+
+ p->NumFiles = 0;
+ p->dataPos = 0;
+
+ p->UnpackPositions = NULL;
+ p->IsDirs = NULL;
+
+ p->FolderToFile = NULL;
+ p->FileToFolder = NULL;
+
+ p->FileNameOffsets = NULL;
+ p->FileNames = NULL;
+
+ SzBitUi32s_Init(&p->CRCs);
+ SzBitUi32s_Init(&p->Attribs);
+ // SzBitUi32s_Init(&p->Parents);
+ SzBitUi64s_Init(&p->MTime);
+ SzBitUi64s_Init(&p->CTime);
+}
+
+void SzArEx_Free(CSzArEx *p, ISzAllocPtr alloc)
+{
+ ISzAlloc_Free(alloc, p->UnpackPositions);
+ ISzAlloc_Free(alloc, p->IsDirs);
+
+ ISzAlloc_Free(alloc, p->FolderToFile);
+ ISzAlloc_Free(alloc, p->FileToFolder);
+
+ ISzAlloc_Free(alloc, p->FileNameOffsets);
+ ISzAlloc_Free(alloc, p->FileNames);
+
+ SzBitUi32s_Free(&p->CRCs, alloc);
+ SzBitUi32s_Free(&p->Attribs, alloc);
+ // SzBitUi32s_Free(&p->Parents, alloc);
+ SzBitUi64s_Free(&p->MTime, alloc);
+ SzBitUi64s_Free(&p->CTime, alloc);
+
+ SzAr_Free(&p->db, alloc);
+ SzArEx_Init(p);
+}
+
+
+static int TestSignatureCandidate(const Byte *testBytes)
+{
+ unsigned i;
+ for (i = 0; i < k7zSignatureSize; i++)
+ if (testBytes[i] != k7zSignature[i])
+ return 0;
+ return 1;
+}
+
+#define SzData_Clear(p) { (p)->Data = NULL; (p)->Size = 0; }
+
+#define SZ_READ_BYTE_SD(_sd_, dest) if ((_sd_)->Size == 0) return SZ_ERROR_ARCHIVE; (_sd_)->Size--; dest = *(_sd_)->Data++;
+#define SZ_READ_BYTE(dest) SZ_READ_BYTE_SD(sd, dest)
+#define SZ_READ_BYTE_2(dest) if (sd.Size == 0) return SZ_ERROR_ARCHIVE; sd.Size--; dest = *sd.Data++;
+
+#define SKIP_DATA(sd, size) { sd->Size -= (size_t)(size); sd->Data += (size_t)(size); }
+#define SKIP_DATA2(sd, size) { sd.Size -= (size_t)(size); sd.Data += (size_t)(size); }
+
+#define SZ_READ_32(dest) if (sd.Size < 4) return SZ_ERROR_ARCHIVE; \
+ dest = GetUi32(sd.Data); SKIP_DATA2(sd, 4);
+
+static MY_NO_INLINE SRes ReadNumber(CSzData *sd, UInt64 *value)
+{
+ Byte firstByte, mask;
+ unsigned i;
+ UInt32 v;
+
+ SZ_READ_BYTE(firstByte);
+ if ((firstByte & 0x80) == 0)
+ {
+ *value = firstByte;
+ return SZ_OK;
+ }
+ SZ_READ_BYTE(v);
+ if ((firstByte & 0x40) == 0)
+ {
+ *value = (((UInt32)firstByte & 0x3F) << 8) | v;
+ return SZ_OK;
+ }
+ SZ_READ_BYTE(mask);
+ *value = v | ((UInt32)mask << 8);
+ mask = 0x20;
+ for (i = 2; i < 8; i++)
+ {
+ Byte b;
+ if ((firstByte & mask) == 0)
+ {
+ UInt64 highPart = (unsigned)firstByte & (unsigned)(mask - 1);
+ *value |= (highPart << (8 * i));
+ return SZ_OK;
+ }
+ SZ_READ_BYTE(b);
+ *value |= ((UInt64)b << (8 * i));
+ mask >>= 1;
+ }
+ return SZ_OK;
+}
+
+
+static MY_NO_INLINE SRes SzReadNumber32(CSzData *sd, UInt32 *value)
+{
+ Byte firstByte;
+ UInt64 value64;
+ if (sd->Size == 0)
+ return SZ_ERROR_ARCHIVE;
+ firstByte = *sd->Data;
+ if ((firstByte & 0x80) == 0)
+ {
+ *value = firstByte;
+ sd->Data++;
+ sd->Size--;
+ return SZ_OK;
+ }
+ RINOK(ReadNumber(sd, &value64));
+ if (value64 >= (UInt32)0x80000000 - 1)
+ return SZ_ERROR_UNSUPPORTED;
+ if (value64 >= ((UInt64)(1) << ((sizeof(size_t) - 1) * 8 + 4)))
+ return SZ_ERROR_UNSUPPORTED;
+ *value = (UInt32)value64;
+ return SZ_OK;
+}
+
+#define ReadID(sd, value) ReadNumber(sd, value)
+
+static SRes SkipData(CSzData *sd)
+{
+ UInt64 size;
+ RINOK(ReadNumber(sd, &size));
+ if (size > sd->Size)
+ return SZ_ERROR_ARCHIVE;
+ SKIP_DATA(sd, size);
+ return SZ_OK;
+}
+
+static SRes WaitId(CSzData *sd, UInt32 id)
+{
+ for (;;)
+ {
+ UInt64 type;
+ RINOK(ReadID(sd, &type));
+ if (type == id)
+ return SZ_OK;
+ if (type == k7zIdEnd)
+ return SZ_ERROR_ARCHIVE;
+ RINOK(SkipData(sd));
+ }
+}
+
+static SRes RememberBitVector(CSzData *sd, UInt32 numItems, const Byte **v)
+{
+ UInt32 numBytes = (numItems + 7) >> 3;
+ if (numBytes > sd->Size)
+ return SZ_ERROR_ARCHIVE;
+ *v = sd->Data;
+ SKIP_DATA(sd, numBytes);
+ return SZ_OK;
+}
+
+static UInt32 CountDefinedBits(const Byte *bits, UInt32 numItems)
+{
+ Byte b = 0;
+ unsigned m = 0;
+ UInt32 sum = 0;
+ for (; numItems != 0; numItems--)
+ {
+ if (m == 0)
+ {
+ b = *bits++;
+ m = 8;
+ }
+ m--;
+ sum += ((b >> m) & 1);
+ }
+ return sum;
+}
+
+static MY_NO_INLINE SRes ReadBitVector(CSzData *sd, UInt32 numItems, Byte **v, ISzAllocPtr alloc)
+{
+ Byte allAreDefined;
+ Byte *v2;
+ UInt32 numBytes = (numItems + 7) >> 3;
+ *v = NULL;
+ SZ_READ_BYTE(allAreDefined);
+ if (numBytes == 0)
+ return SZ_OK;
+ if (allAreDefined == 0)
+ {
+ if (numBytes > sd->Size)
+ return SZ_ERROR_ARCHIVE;
+ MY_ALLOC_AND_CPY(*v, numBytes, sd->Data, alloc);
+ SKIP_DATA(sd, numBytes);
+ return SZ_OK;
+ }
+ MY_ALLOC(Byte, *v, numBytes, alloc);
+ v2 = *v;
+ memset(v2, 0xFF, (size_t)numBytes);
+ {
+ unsigned numBits = (unsigned)numItems & 7;
+ if (numBits != 0)
+ v2[(size_t)numBytes - 1] = (Byte)((((UInt32)1 << numBits) - 1) << (8 - numBits));
+ }
+ return SZ_OK;
+}
+
+static MY_NO_INLINE SRes ReadUi32s(CSzData *sd2, UInt32 numItems, CSzBitUi32s *crcs, ISzAllocPtr alloc)
+{
+ UInt32 i;
+ CSzData sd;
+ UInt32 *vals;
+ const Byte *defs;
+ MY_ALLOC_ZE(UInt32, crcs->Vals, numItems, alloc);
+ sd = *sd2;
+ defs = crcs->Defs;
+ vals = crcs->Vals;
+ for (i = 0; i < numItems; i++)
+ if (SzBitArray_Check(defs, i))
+ {
+ SZ_READ_32(vals[i]);
+ }
+ else
+ vals[i] = 0;
+ *sd2 = sd;
+ return SZ_OK;
+}
+
+static SRes ReadBitUi32s(CSzData *sd, UInt32 numItems, CSzBitUi32s *crcs, ISzAllocPtr alloc)
+{
+ SzBitUi32s_Free(crcs, alloc);
+ RINOK(ReadBitVector(sd, numItems, &crcs->Defs, alloc));
+ return ReadUi32s(sd, numItems, crcs, alloc);
+}
+
+static SRes SkipBitUi32s(CSzData *sd, UInt32 numItems)
+{
+ Byte allAreDefined;
+ UInt32 numDefined = numItems;
+ SZ_READ_BYTE(allAreDefined);
+ if (!allAreDefined)
+ {
+ size_t numBytes = (numItems + 7) >> 3;
+ if (numBytes > sd->Size)
+ return SZ_ERROR_ARCHIVE;
+ numDefined = CountDefinedBits(sd->Data, numItems);
+ SKIP_DATA(sd, numBytes);
+ }
+ if (numDefined > (sd->Size >> 2))
+ return SZ_ERROR_ARCHIVE;
+ SKIP_DATA(sd, (size_t)numDefined * 4);
+ return SZ_OK;
+}
+
+static SRes ReadPackInfo(CSzAr *p, CSzData *sd, ISzAllocPtr alloc)
+{
+ RINOK(SzReadNumber32(sd, &p->NumPackStreams));
+
+ RINOK(WaitId(sd, k7zIdSize));
+ MY_ALLOC(UInt64, p->PackPositions, (size_t)p->NumPackStreams + 1, alloc);
+ {
+ UInt64 sum = 0;
+ UInt32 i;
+ UInt32 numPackStreams = p->NumPackStreams;
+ for (i = 0; i < numPackStreams; i++)
+ {
+ UInt64 packSize;
+ p->PackPositions[i] = sum;
+ RINOK(ReadNumber(sd, &packSize));
+ sum += packSize;
+ if (sum < packSize)
+ return SZ_ERROR_ARCHIVE;
+ }
+ p->PackPositions[i] = sum;
+ }
+
+ for (;;)
+ {
+ UInt64 type;
+ RINOK(ReadID(sd, &type));
+ if (type == k7zIdEnd)
+ return SZ_OK;
+ if (type == k7zIdCRC)
+ {
+ /* CRC of packed streams is unused now */
+ RINOK(SkipBitUi32s(sd, p->NumPackStreams));
+ continue;
+ }
+ RINOK(SkipData(sd));
+ }
+}
+
+/*
+static SRes SzReadSwitch(CSzData *sd)
+{
+ Byte external;
+ RINOK(SzReadByte(sd, &external));
+ return (external == 0) ? SZ_OK: SZ_ERROR_UNSUPPORTED;
+}
+*/
+
+#define k_NumCodersStreams_in_Folder_MAX (SZ_NUM_BONDS_IN_FOLDER_MAX + SZ_NUM_PACK_STREAMS_IN_FOLDER_MAX)
+
+SRes SzGetNextFolderItem(CSzFolder *f, CSzData *sd)
+{
+ UInt32 numCoders, i;
+ UInt32 numInStreams = 0;
+ const Byte *dataStart = sd->Data;
+
+ f->NumCoders = 0;
+ f->NumBonds = 0;
+ f->NumPackStreams = 0;
+ f->UnpackStream = 0;
+
+ RINOK(SzReadNumber32(sd, &numCoders));
+ if (numCoders == 0 || numCoders > SZ_NUM_CODERS_IN_FOLDER_MAX)
+ return SZ_ERROR_UNSUPPORTED;
+
+ for (i = 0; i < numCoders; i++)
+ {
+ Byte mainByte;
+ CSzCoderInfo *coder = f->Coders + i;
+ unsigned idSize, j;
+ UInt64 id;
+
+ SZ_READ_BYTE(mainByte);
+ if ((mainByte & 0xC0) != 0)
+ return SZ_ERROR_UNSUPPORTED;
+
+ idSize = (unsigned)(mainByte & 0xF);
+ if (idSize > sizeof(id))
+ return SZ_ERROR_UNSUPPORTED;
+ if (idSize > sd->Size)
+ return SZ_ERROR_ARCHIVE;
+ id = 0;
+ for (j = 0; j < idSize; j++)
+ {
+ id = ((id << 8) | *sd->Data);
+ sd->Data++;
+ sd->Size--;
+ }
+ if (id > (UInt32)0xFFFFFFFF)
+ return SZ_ERROR_UNSUPPORTED;
+ coder->MethodID = (UInt32)id;
+
+ coder->NumStreams = 1;
+ coder->PropsOffset = 0;
+ coder->PropsSize = 0;
+
+ if ((mainByte & 0x10) != 0)
+ {
+ UInt32 numStreams;
+
+ RINOK(SzReadNumber32(sd, &numStreams));
+ if (numStreams > k_NumCodersStreams_in_Folder_MAX)
+ return SZ_ERROR_UNSUPPORTED;
+ coder->NumStreams = (Byte)numStreams;
+
+ RINOK(SzReadNumber32(sd, &numStreams));
+ if (numStreams != 1)
+ return SZ_ERROR_UNSUPPORTED;
+ }
+
+ numInStreams += coder->NumStreams;
+
+ if (numInStreams > k_NumCodersStreams_in_Folder_MAX)
+ return SZ_ERROR_UNSUPPORTED;
+
+ if ((mainByte & 0x20) != 0)
+ {
+ UInt32 propsSize = 0;
+ RINOK(SzReadNumber32(sd, &propsSize));
+ if (propsSize > sd->Size)
+ return SZ_ERROR_ARCHIVE;
+ if (propsSize >= 0x80)
+ return SZ_ERROR_UNSUPPORTED;
+ coder->PropsOffset = sd->Data - dataStart;
+ coder->PropsSize = (Byte)propsSize;
+ sd->Data += (size_t)propsSize;
+ sd->Size -= (size_t)propsSize;
+ }
+ }
+
+ /*
+ if (numInStreams == 1 && numCoders == 1)
+ {
+ f->NumPackStreams = 1;
+ f->PackStreams[0] = 0;
+ }
+ else
+ */
+ {
+ Byte streamUsed[k_NumCodersStreams_in_Folder_MAX];
+ UInt32 numBonds, numPackStreams;
+
+ numBonds = numCoders - 1;
+ if (numInStreams < numBonds)
+ return SZ_ERROR_ARCHIVE;
+ if (numBonds > SZ_NUM_BONDS_IN_FOLDER_MAX)
+ return SZ_ERROR_UNSUPPORTED;
+ f->NumBonds = numBonds;
+
+ numPackStreams = numInStreams - numBonds;
+ if (numPackStreams > SZ_NUM_PACK_STREAMS_IN_FOLDER_MAX)
+ return SZ_ERROR_UNSUPPORTED;
+ f->NumPackStreams = numPackStreams;
+
+ for (i = 0; i < numInStreams; i++)
+ streamUsed[i] = False;
+
+ if (numBonds != 0)
+ {
+ Byte coderUsed[SZ_NUM_CODERS_IN_FOLDER_MAX];
+
+ for (i = 0; i < numCoders; i++)
+ coderUsed[i] = False;
+
+ for (i = 0; i < numBonds; i++)
+ {
+ CSzBond *bp = f->Bonds + i;
+
+ RINOK(SzReadNumber32(sd, &bp->InIndex));
+ if (bp->InIndex >= numInStreams || streamUsed[bp->InIndex])
+ return SZ_ERROR_ARCHIVE;
+ streamUsed[bp->InIndex] = True;
+
+ RINOK(SzReadNumber32(sd, &bp->OutIndex));
+ if (bp->OutIndex >= numCoders || coderUsed[bp->OutIndex])
+ return SZ_ERROR_ARCHIVE;
+ coderUsed[bp->OutIndex] = True;
+ }
+
+ for (i = 0; i < numCoders; i++)
+ if (!coderUsed[i])
+ {
+ f->UnpackStream = i;
+ break;
+ }
+
+ if (i == numCoders)
+ return SZ_ERROR_ARCHIVE;
+ }
+
+ if (numPackStreams == 1)
+ {
+ for (i = 0; i < numInStreams; i++)
+ if (!streamUsed[i])
+ break;
+ if (i == numInStreams)
+ return SZ_ERROR_ARCHIVE;
+ f->PackStreams[0] = i;
+ }
+ else
+ for (i = 0; i < numPackStreams; i++)
+ {
+ UInt32 index;
+ RINOK(SzReadNumber32(sd, &index));
+ if (index >= numInStreams || streamUsed[index])
+ return SZ_ERROR_ARCHIVE;
+ streamUsed[index] = True;
+ f->PackStreams[i] = index;
+ }
+ }
+
+ f->NumCoders = numCoders;
+
+ return SZ_OK;
+}
+
+
+static MY_NO_INLINE SRes SkipNumbers(CSzData *sd2, UInt32 num)
+{
+ CSzData sd;
+ sd = *sd2;
+ for (; num != 0; num--)
+ {
+ Byte firstByte, mask;
+ unsigned i;
+ SZ_READ_BYTE_2(firstByte);
+ if ((firstByte & 0x80) == 0)
+ continue;
+ if ((firstByte & 0x40) == 0)
+ {
+ if (sd.Size == 0)
+ return SZ_ERROR_ARCHIVE;
+ sd.Size--;
+ sd.Data++;
+ continue;
+ }
+ mask = 0x20;
+ for (i = 2; i < 8 && (firstByte & mask) != 0; i++)
+ mask >>= 1;
+ if (i > sd.Size)
+ return SZ_ERROR_ARCHIVE;
+ SKIP_DATA2(sd, i);
+ }
+ *sd2 = sd;
+ return SZ_OK;
+}
+
+
+#define k_Scan_NumCoders_MAX 64
+#define k_Scan_NumCodersStreams_in_Folder_MAX 64
+
+
+static SRes ReadUnpackInfo(CSzAr *p,
+ CSzData *sd2,
+ UInt32 numFoldersMax,
+ const CBuf *tempBufs, UInt32 numTempBufs,
+ ISzAllocPtr alloc)
+{
+ CSzData sd;
+
+ UInt32 fo, numFolders, numCodersOutStreams, packStreamIndex;
+ const Byte *startBufPtr;
+ Byte external;
+
+ RINOK(WaitId(sd2, k7zIdFolder));
+
+ RINOK(SzReadNumber32(sd2, &numFolders));
+ if (numFolders > numFoldersMax)
+ return SZ_ERROR_UNSUPPORTED;
+ p->NumFolders = numFolders;
+
+ SZ_READ_BYTE_SD(sd2, external);
+ if (external == 0)
+ sd = *sd2;
+ else
+ {
+ UInt32 index;
+ RINOK(SzReadNumber32(sd2, &index));
+ if (index >= numTempBufs)
+ return SZ_ERROR_ARCHIVE;
+ sd.Data = tempBufs[index].data;
+ sd.Size = tempBufs[index].size;
+ }
+
+ MY_ALLOC(size_t, p->FoCodersOffsets, (size_t)numFolders + 1, alloc);
+ MY_ALLOC(UInt32, p->FoStartPackStreamIndex, (size_t)numFolders + 1, alloc);
+ MY_ALLOC(UInt32, p->FoToCoderUnpackSizes, (size_t)numFolders + 1, alloc);
+ MY_ALLOC(Byte, p->FoToMainUnpackSizeIndex, (size_t)numFolders, alloc);
+
+ startBufPtr = sd.Data;
+
+ packStreamIndex = 0;
+ numCodersOutStreams = 0;
+
+ for (fo = 0; fo < numFolders; fo++)
+ {
+ UInt32 numCoders, ci, numInStreams = 0;
+
+ p->FoCodersOffsets[fo] = sd.Data - startBufPtr;
+
+ RINOK(SzReadNumber32(&sd, &numCoders));
+ if (numCoders == 0 || numCoders > k_Scan_NumCoders_MAX)
+ return SZ_ERROR_UNSUPPORTED;
+
+ for (ci = 0; ci < numCoders; ci++)
+ {
+ Byte mainByte;
+ unsigned idSize;
+ UInt32 coderInStreams;
+
+ SZ_READ_BYTE_2(mainByte);
+ if ((mainByte & 0xC0) != 0)
+ return SZ_ERROR_UNSUPPORTED;
+ idSize = (mainByte & 0xF);
+ if (idSize > 8)
+ return SZ_ERROR_UNSUPPORTED;
+ if (idSize > sd.Size)
+ return SZ_ERROR_ARCHIVE;
+ SKIP_DATA2(sd, idSize);
+
+ coderInStreams = 1;
+
+ if ((mainByte & 0x10) != 0)
+ {
+ UInt32 coderOutStreams;
+ RINOK(SzReadNumber32(&sd, &coderInStreams));
+ RINOK(SzReadNumber32(&sd, &coderOutStreams));
+ if (coderInStreams > k_Scan_NumCodersStreams_in_Folder_MAX || coderOutStreams != 1)
+ return SZ_ERROR_UNSUPPORTED;
+ }
+
+ numInStreams += coderInStreams;
+
+ if ((mainByte & 0x20) != 0)
+ {
+ UInt32 propsSize;
+ RINOK(SzReadNumber32(&sd, &propsSize));
+ if (propsSize > sd.Size)
+ return SZ_ERROR_ARCHIVE;
+ SKIP_DATA2(sd, propsSize);
+ }
+ }
+
+ {
+ UInt32 indexOfMainStream = 0;
+ UInt32 numPackStreams = 1;
+
+ if (numCoders != 1 || numInStreams != 1)
+ {
+ Byte streamUsed[k_Scan_NumCodersStreams_in_Folder_MAX];
+ Byte coderUsed[k_Scan_NumCoders_MAX];
+
+ UInt32 i;
+ UInt32 numBonds = numCoders - 1;
+ if (numInStreams < numBonds)
+ return SZ_ERROR_ARCHIVE;
+
+ if (numInStreams > k_Scan_NumCodersStreams_in_Folder_MAX)
+ return SZ_ERROR_UNSUPPORTED;
+
+ for (i = 0; i < numInStreams; i++)
+ streamUsed[i] = False;
+ for (i = 0; i < numCoders; i++)
+ coderUsed[i] = False;
+
+ for (i = 0; i < numBonds; i++)
+ {
+ UInt32 index;
+
+ RINOK(SzReadNumber32(&sd, &index));
+ if (index >= numInStreams || streamUsed[index])
+ return SZ_ERROR_ARCHIVE;
+ streamUsed[index] = True;
+
+ RINOK(SzReadNumber32(&sd, &index));
+ if (index >= numCoders || coderUsed[index])
+ return SZ_ERROR_ARCHIVE;
+ coderUsed[index] = True;
+ }
+
+ numPackStreams = numInStreams - numBonds;
+
+ if (numPackStreams != 1)
+ for (i = 0; i < numPackStreams; i++)
+ {
+ UInt32 index;
+ RINOK(SzReadNumber32(&sd, &index));
+ if (index >= numInStreams || streamUsed[index])
+ return SZ_ERROR_ARCHIVE;
+ streamUsed[index] = True;
+ }
+
+ for (i = 0; i < numCoders; i++)
+ if (!coderUsed[i])
+ {
+ indexOfMainStream = i;
+ break;
+ }
+
+ if (i == numCoders)
+ return SZ_ERROR_ARCHIVE;
+ }
+
+ p->FoStartPackStreamIndex[fo] = packStreamIndex;
+ p->FoToCoderUnpackSizes[fo] = numCodersOutStreams;
+ p->FoToMainUnpackSizeIndex[fo] = (Byte)indexOfMainStream;
+ numCodersOutStreams += numCoders;
+ if (numCodersOutStreams < numCoders)
+ return SZ_ERROR_UNSUPPORTED;
+ if (numPackStreams > p->NumPackStreams - packStreamIndex)
+ return SZ_ERROR_ARCHIVE;
+ packStreamIndex += numPackStreams;
+ }
+ }
+
+ p->FoToCoderUnpackSizes[fo] = numCodersOutStreams;
+
+ {
+ size_t dataSize = sd.Data - startBufPtr;
+ p->FoStartPackStreamIndex[fo] = packStreamIndex;
+ p->FoCodersOffsets[fo] = dataSize;
+ MY_ALLOC_ZE_AND_CPY(p->CodersData, dataSize, startBufPtr, alloc);
+ }
+
+ if (external != 0)
+ {
+ if (sd.Size != 0)
+ return SZ_ERROR_ARCHIVE;
+ sd = *sd2;
+ }
+
+ RINOK(WaitId(&sd, k7zIdCodersUnpackSize));
+
+ MY_ALLOC_ZE(UInt64, p->CoderUnpackSizes, (size_t)numCodersOutStreams, alloc);
+ {
+ UInt32 i;
+ for (i = 0; i < numCodersOutStreams; i++)
+ {
+ RINOK(ReadNumber(&sd, p->CoderUnpackSizes + i));
+ }
+ }
+
+ for (;;)
+ {
+ UInt64 type;
+ RINOK(ReadID(&sd, &type));
+ if (type == k7zIdEnd)
+ {
+ *sd2 = sd;
+ return SZ_OK;
+ }
+ if (type == k7zIdCRC)
+ {
+ RINOK(ReadBitUi32s(&sd, numFolders, &p->FolderCRCs, alloc));
+ continue;
+ }
+ RINOK(SkipData(&sd));
+ }
+}
+
+
+UInt64 SzAr_GetFolderUnpackSize(const CSzAr *p, UInt32 folderIndex)
+{
+ return p->CoderUnpackSizes[p->FoToCoderUnpackSizes[folderIndex] + p->FoToMainUnpackSizeIndex[folderIndex]];
+}
+
+
+typedef struct
+{
+ UInt32 NumTotalSubStreams;
+ UInt32 NumSubDigests;
+ CSzData sdNumSubStreams;
+ CSzData sdSizes;
+ CSzData sdCRCs;
+} CSubStreamInfo;
+
+
+static SRes ReadSubStreamsInfo(CSzAr *p, CSzData *sd, CSubStreamInfo *ssi)
+{
+ UInt64 type = 0;
+ UInt32 numSubDigests = 0;
+ UInt32 numFolders = p->NumFolders;
+ UInt32 numUnpackStreams = numFolders;
+ UInt32 numUnpackSizesInData = 0;
+
+ for (;;)
+ {
+ RINOK(ReadID(sd, &type));
+ if (type == k7zIdNumUnpackStream)
+ {
+ UInt32 i;
+ ssi->sdNumSubStreams.Data = sd->Data;
+ numUnpackStreams = 0;
+ numSubDigests = 0;
+ for (i = 0; i < numFolders; i++)
+ {
+ UInt32 numStreams;
+ RINOK(SzReadNumber32(sd, &numStreams));
+ if (numUnpackStreams > numUnpackStreams + numStreams)
+ return SZ_ERROR_UNSUPPORTED;
+ numUnpackStreams += numStreams;
+ if (numStreams != 0)
+ numUnpackSizesInData += (numStreams - 1);
+ if (numStreams != 1 || !SzBitWithVals_Check(&p->FolderCRCs, i))
+ numSubDigests += numStreams;
+ }
+ ssi->sdNumSubStreams.Size = sd->Data - ssi->sdNumSubStreams.Data;
+ continue;
+ }
+ if (type == k7zIdCRC || type == k7zIdSize || type == k7zIdEnd)
+ break;
+ RINOK(SkipData(sd));
+ }
+
+ if (!ssi->sdNumSubStreams.Data)
+ {
+ numSubDigests = numFolders;
+ if (p->FolderCRCs.Defs)
+ numSubDigests = numFolders - CountDefinedBits(p->FolderCRCs.Defs, numFolders);
+ }
+
+ ssi->NumTotalSubStreams = numUnpackStreams;
+ ssi->NumSubDigests = numSubDigests;
+
+ if (type == k7zIdSize)
+ {
+ ssi->sdSizes.Data = sd->Data;
+ RINOK(SkipNumbers(sd, numUnpackSizesInData));
+ ssi->sdSizes.Size = sd->Data - ssi->sdSizes.Data;
+ RINOK(ReadID(sd, &type));
+ }
+
+ for (;;)
+ {
+ if (type == k7zIdEnd)
+ return SZ_OK;
+ if (type == k7zIdCRC)
+ {
+ ssi->sdCRCs.Data = sd->Data;
+ RINOK(SkipBitUi32s(sd, numSubDigests));
+ ssi->sdCRCs.Size = sd->Data - ssi->sdCRCs.Data;
+ }
+ else
+ {
+ RINOK(SkipData(sd));
+ }
+ RINOK(ReadID(sd, &type));
+ }
+}
+
+static SRes SzReadStreamsInfo(CSzAr *p,
+ CSzData *sd,
+ UInt32 numFoldersMax, const CBuf *tempBufs, UInt32 numTempBufs,
+ UInt64 *dataOffset,
+ CSubStreamInfo *ssi,
+ ISzAllocPtr alloc)
+{
+ UInt64 type;
+
+ SzData_Clear(&ssi->sdSizes);
+ SzData_Clear(&ssi->sdCRCs);
+ SzData_Clear(&ssi->sdNumSubStreams);
+
+ *dataOffset = 0;
+ RINOK(ReadID(sd, &type));
+ if (type == k7zIdPackInfo)
+ {
+ RINOK(ReadNumber(sd, dataOffset));
+ RINOK(ReadPackInfo(p, sd, alloc));
+ RINOK(ReadID(sd, &type));
+ }
+ if (type == k7zIdUnpackInfo)
+ {
+ RINOK(ReadUnpackInfo(p, sd, numFoldersMax, tempBufs, numTempBufs, alloc));
+ RINOK(ReadID(sd, &type));
+ }
+ if (type == k7zIdSubStreamsInfo)
+ {
+ RINOK(ReadSubStreamsInfo(p, sd, ssi));
+ RINOK(ReadID(sd, &type));
+ }
+ else
+ {
+ ssi->NumTotalSubStreams = p->NumFolders;
+ // ssi->NumSubDigests = 0;
+ }
+
+ return (type == k7zIdEnd ? SZ_OK : SZ_ERROR_UNSUPPORTED);
+}
+
+static SRes SzReadAndDecodePackedStreams(
+ ILookInStream *inStream,
+ CSzData *sd,
+ CBuf *tempBufs,
+ UInt32 numFoldersMax,
+ UInt64 baseOffset,
+ CSzAr *p,
+ ISzAllocPtr allocTemp)
+{
+ UInt64 dataStartPos;
+ UInt32 fo;
+ CSubStreamInfo ssi;
+
+ RINOK(SzReadStreamsInfo(p, sd, numFoldersMax, NULL, 0, &dataStartPos, &ssi, allocTemp));
+
+ dataStartPos += baseOffset;
+ if (p->NumFolders == 0)
+ return SZ_ERROR_ARCHIVE;
+
+ for (fo = 0; fo < p->NumFolders; fo++)
+ Buf_Init(tempBufs + fo);
+
+ for (fo = 0; fo < p->NumFolders; fo++)
+ {
+ CBuf *tempBuf = tempBufs + fo;
+ UInt64 unpackSize = SzAr_GetFolderUnpackSize(p, fo);
+ if ((size_t)unpackSize != unpackSize)
+ return SZ_ERROR_MEM;
+ if (!Buf_Create(tempBuf, (size_t)unpackSize, allocTemp))
+ return SZ_ERROR_MEM;
+ }
+
+ for (fo = 0; fo < p->NumFolders; fo++)
+ {
+ const CBuf *tempBuf = tempBufs + fo;
+ RINOK(LookInStream_SeekTo(inStream, dataStartPos));
+ RINOK(SzAr_DecodeFolder(p, fo, inStream, dataStartPos, tempBuf->data, tempBuf->size, allocTemp));
+ }
+
+ return SZ_OK;
+}
+
+static SRes SzReadFileNames(const Byte *data, size_t size, UInt32 numFiles, size_t *offsets)
+{
+ size_t pos = 0;
+ *offsets++ = 0;
+ if (numFiles == 0)
+ return (size == 0) ? SZ_OK : SZ_ERROR_ARCHIVE;
+ if (size < 2)
+ return SZ_ERROR_ARCHIVE;
+ if (data[size - 2] != 0 || data[size - 1] != 0)
+ return SZ_ERROR_ARCHIVE;
+ do
+ {
+ const Byte *p;
+ if (pos == size)
+ return SZ_ERROR_ARCHIVE;
+ for (p = data + pos;
+ #ifdef _WIN32
+ *(const UInt16 *)p != 0
+ #else
+ p[0] != 0 || p[1] != 0
+ #endif
+ ; p += 2);
+ pos = p - data + 2;
+ *offsets++ = (pos >> 1);
+ }
+ while (--numFiles);
+ return (pos == size) ? SZ_OK : SZ_ERROR_ARCHIVE;
+}
+
+static MY_NO_INLINE SRes ReadTime(CSzBitUi64s *p, UInt32 num,
+ CSzData *sd2,
+ const CBuf *tempBufs, UInt32 numTempBufs,
+ ISzAllocPtr alloc)
+{
+ CSzData sd;
+ UInt32 i;
+ CNtfsFileTime *vals;
+ Byte *defs;
+ Byte external;
+
+ RINOK(ReadBitVector(sd2, num, &p->Defs, alloc));
+
+ SZ_READ_BYTE_SD(sd2, external);
+ if (external == 0)
+ sd = *sd2;
+ else
+ {
+ UInt32 index;
+ RINOK(SzReadNumber32(sd2, &index));
+ if (index >= numTempBufs)
+ return SZ_ERROR_ARCHIVE;
+ sd.Data = tempBufs[index].data;
+ sd.Size = tempBufs[index].size;
+ }
+
+ MY_ALLOC_ZE(CNtfsFileTime, p->Vals, num, alloc);
+ vals = p->Vals;
+ defs = p->Defs;
+ for (i = 0; i < num; i++)
+ if (SzBitArray_Check(defs, i))
+ {
+ if (sd.Size < 8)
+ return SZ_ERROR_ARCHIVE;
+ vals[i].Low = GetUi32(sd.Data);
+ vals[i].High = GetUi32(sd.Data + 4);
+ SKIP_DATA2(sd, 8);
+ }
+ else
+ vals[i].High = vals[i].Low = 0;
+
+ if (external == 0)
+ *sd2 = sd;
+
+ return SZ_OK;
+}
+
+
+#define NUM_ADDITIONAL_STREAMS_MAX 8
+
+
+static SRes SzReadHeader2(
+ CSzArEx *p, /* allocMain */
+ CSzData *sd,
+ ILookInStream *inStream,
+ CBuf *tempBufs, UInt32 *numTempBufs,
+ ISzAllocPtr allocMain,
+ ISzAllocPtr allocTemp
+ )
+{
+ CSubStreamInfo ssi;
+
+{
+ UInt64 type;
+
+ SzData_Clear(&ssi.sdSizes);
+ SzData_Clear(&ssi.sdCRCs);
+ SzData_Clear(&ssi.sdNumSubStreams);
+
+ ssi.NumSubDigests = 0;
+ ssi.NumTotalSubStreams = 0;
+
+ RINOK(ReadID(sd, &type));
+
+ if (type == k7zIdArchiveProperties)
+ {
+ for (;;)
+ {
+ UInt64 type2;
+ RINOK(ReadID(sd, &type2));
+ if (type2 == k7zIdEnd)
+ break;
+ RINOK(SkipData(sd));
+ }
+ RINOK(ReadID(sd, &type));
+ }
+
+ if (type == k7zIdAdditionalStreamsInfo)
+ {
+ CSzAr tempAr;
+ SRes res;
+
+ SzAr_Init(&tempAr);
+ res = SzReadAndDecodePackedStreams(inStream, sd, tempBufs, NUM_ADDITIONAL_STREAMS_MAX,
+ p->startPosAfterHeader, &tempAr, allocTemp);
+ *numTempBufs = tempAr.NumFolders;
+ SzAr_Free(&tempAr, allocTemp);
+
+ if (res != SZ_OK)
+ return res;
+ RINOK(ReadID(sd, &type));
+ }
+
+ if (type == k7zIdMainStreamsInfo)
+ {
+ RINOK(SzReadStreamsInfo(&p->db, sd, (UInt32)1 << 30, tempBufs, *numTempBufs,
+ &p->dataPos, &ssi, allocMain));
+ p->dataPos += p->startPosAfterHeader;
+ RINOK(ReadID(sd, &type));
+ }
+
+ if (type == k7zIdEnd)
+ {
+ return SZ_OK;
+ }
+
+ if (type != k7zIdFilesInfo)
+ return SZ_ERROR_ARCHIVE;
+}
+
+{
+ UInt32 numFiles = 0;
+ UInt32 numEmptyStreams = 0;
+ const Byte *emptyStreams = NULL;
+ const Byte *emptyFiles = NULL;
+
+ RINOK(SzReadNumber32(sd, &numFiles));
+ p->NumFiles = numFiles;
+
+ for (;;)
+ {
+ UInt64 type;
+ UInt64 size;
+ RINOK(ReadID(sd, &type));
+ if (type == k7zIdEnd)
+ break;
+ RINOK(ReadNumber(sd, &size));
+ if (size > sd->Size)
+ return SZ_ERROR_ARCHIVE;
+
+ if (type >= ((UInt32)1 << 8))
+ {
+ SKIP_DATA(sd, size);
+ }
+ else switch ((unsigned)type)
+ {
+ case k7zIdName:
+ {
+ size_t namesSize;
+ const Byte *namesData;
+ Byte external;
+
+ SZ_READ_BYTE(external);
+ if (external == 0)
+ {
+ namesSize = (size_t)size - 1;
+ namesData = sd->Data;
+ }
+ else
+ {
+ UInt32 index;
+ RINOK(SzReadNumber32(sd, &index));
+ if (index >= *numTempBufs)
+ return SZ_ERROR_ARCHIVE;
+ namesData = (tempBufs)[index].data;
+ namesSize = (tempBufs)[index].size;
+ }
+
+ if ((namesSize & 1) != 0)
+ return SZ_ERROR_ARCHIVE;
+ MY_ALLOC(size_t, p->FileNameOffsets, numFiles + 1, allocMain);
+ MY_ALLOC_ZE_AND_CPY(p->FileNames, namesSize, namesData, allocMain);
+ RINOK(SzReadFileNames(p->FileNames, namesSize, numFiles, p->FileNameOffsets))
+ if (external == 0)
+ {
+ SKIP_DATA(sd, namesSize);
+ }
+ break;
+ }
+ case k7zIdEmptyStream:
+ {
+ RINOK(RememberBitVector(sd, numFiles, &emptyStreams));
+ numEmptyStreams = CountDefinedBits(emptyStreams, numFiles);
+ emptyFiles = NULL;
+ break;
+ }
+ case k7zIdEmptyFile:
+ {
+ RINOK(RememberBitVector(sd, numEmptyStreams, &emptyFiles));
+ break;
+ }
+ case k7zIdWinAttrib:
+ {
+ Byte external;
+ CSzData sdSwitch;
+ CSzData *sdPtr;
+ SzBitUi32s_Free(&p->Attribs, allocMain);
+ RINOK(ReadBitVector(sd, numFiles, &p->Attribs.Defs, allocMain));
+
+ SZ_READ_BYTE(external);
+ if (external == 0)
+ sdPtr = sd;
+ else
+ {
+ UInt32 index;
+ RINOK(SzReadNumber32(sd, &index));
+ if (index >= *numTempBufs)
+ return SZ_ERROR_ARCHIVE;
+ sdSwitch.Data = (tempBufs)[index].data;
+ sdSwitch.Size = (tempBufs)[index].size;
+ sdPtr = &sdSwitch;
+ }
+ RINOK(ReadUi32s(sdPtr, numFiles, &p->Attribs, allocMain));
+ break;
+ }
+ /*
+ case k7zParent:
+ {
+ SzBitUi32s_Free(&p->Parents, allocMain);
+ RINOK(ReadBitVector(sd, numFiles, &p->Parents.Defs, allocMain));
+ RINOK(SzReadSwitch(sd));
+ RINOK(ReadUi32s(sd, numFiles, &p->Parents, allocMain));
+ break;
+ }
+ */
+ case k7zIdMTime: RINOK(ReadTime(&p->MTime, numFiles, sd, tempBufs, *numTempBufs, allocMain)); break;
+ case k7zIdCTime: RINOK(ReadTime(&p->CTime, numFiles, sd, tempBufs, *numTempBufs, allocMain)); break;
+ default:
+ {
+ SKIP_DATA(sd, size);
+ }
+ }
+ }
+
+ if (numFiles - numEmptyStreams != ssi.NumTotalSubStreams)
+ return SZ_ERROR_ARCHIVE;
+
+ for (;;)
+ {
+ UInt64 type;
+ RINOK(ReadID(sd, &type));
+ if (type == k7zIdEnd)
+ break;
+ RINOK(SkipData(sd));
+ }
+
+ {
+ UInt32 i;
+ UInt32 emptyFileIndex = 0;
+ UInt32 folderIndex = 0;
+ UInt32 remSubStreams = 0;
+ UInt32 numSubStreams = 0;
+ UInt64 unpackPos = 0;
+ const Byte *digestsDefs = NULL;
+ const Byte *digestsVals = NULL;
+ UInt32 digestsValsIndex = 0;
+ UInt32 digestIndex;
+ Byte allDigestsDefined = 0;
+ Byte isDirMask = 0;
+ Byte crcMask = 0;
+ Byte mask = 0x80;
+
+ MY_ALLOC(UInt32, p->FolderToFile, p->db.NumFolders + 1, allocMain);
+ MY_ALLOC_ZE(UInt32, p->FileToFolder, p->NumFiles, allocMain);
+ MY_ALLOC(UInt64, p->UnpackPositions, p->NumFiles + 1, allocMain);
+ MY_ALLOC_ZE(Byte, p->IsDirs, (p->NumFiles + 7) >> 3, allocMain);
+
+ RINOK(SzBitUi32s_Alloc(&p->CRCs, p->NumFiles, allocMain));
+
+ if (ssi.sdCRCs.Size != 0)
+ {
+ SZ_READ_BYTE_SD(&ssi.sdCRCs, allDigestsDefined);
+ if (allDigestsDefined)
+ digestsVals = ssi.sdCRCs.Data;
+ else
+ {
+ size_t numBytes = (ssi.NumSubDigests + 7) >> 3;
+ digestsDefs = ssi.sdCRCs.Data;
+ digestsVals = digestsDefs + numBytes;
+ }
+ }
+
+ digestIndex = 0;
+
+ for (i = 0; i < numFiles; i++, mask >>= 1)
+ {
+ if (mask == 0)
+ {
+ UInt32 byteIndex = (i - 1) >> 3;
+ p->IsDirs[byteIndex] = isDirMask;
+ p->CRCs.Defs[byteIndex] = crcMask;
+ isDirMask = 0;
+ crcMask = 0;
+ mask = 0x80;
+ }
+
+ p->UnpackPositions[i] = unpackPos;
+ p->CRCs.Vals[i] = 0;
+
+ if (emptyStreams && SzBitArray_Check(emptyStreams, i))
+ {
+ if (emptyFiles)
+ {
+ if (!SzBitArray_Check(emptyFiles, emptyFileIndex))
+ isDirMask |= mask;
+ emptyFileIndex++;
+ }
+ else
+ isDirMask |= mask;
+ if (remSubStreams == 0)
+ {
+ p->FileToFolder[i] = (UInt32)-1;
+ continue;
+ }
+ }
+
+ if (remSubStreams == 0)
+ {
+ for (;;)
+ {
+ if (folderIndex >= p->db.NumFolders)
+ return SZ_ERROR_ARCHIVE;
+ p->FolderToFile[folderIndex] = i;
+ numSubStreams = 1;
+ if (ssi.sdNumSubStreams.Data)
+ {
+ RINOK(SzReadNumber32(&ssi.sdNumSubStreams, &numSubStreams));
+ }
+ remSubStreams = numSubStreams;
+ if (numSubStreams != 0)
+ break;
+ {
+ UInt64 folderUnpackSize = SzAr_GetFolderUnpackSize(&p->db, folderIndex);
+ unpackPos += folderUnpackSize;
+ if (unpackPos < folderUnpackSize)
+ return SZ_ERROR_ARCHIVE;
+ }
+
+ folderIndex++;
+ }
+ }
+
+ p->FileToFolder[i] = folderIndex;
+
+ if (emptyStreams && SzBitArray_Check(emptyStreams, i))
+ continue;
+
+ if (--remSubStreams == 0)
+ {
+ UInt64 folderUnpackSize = SzAr_GetFolderUnpackSize(&p->db, folderIndex);
+ UInt64 startFolderUnpackPos = p->UnpackPositions[p->FolderToFile[folderIndex]];
+ if (folderUnpackSize < unpackPos - startFolderUnpackPos)
+ return SZ_ERROR_ARCHIVE;
+ unpackPos = startFolderUnpackPos + folderUnpackSize;
+ if (unpackPos < folderUnpackSize)
+ return SZ_ERROR_ARCHIVE;
+
+ if (numSubStreams == 1 && SzBitWithVals_Check(&p->db.FolderCRCs, i))
+ {
+ p->CRCs.Vals[i] = p->db.FolderCRCs.Vals[folderIndex];
+ crcMask |= mask;
+ }
+ else if (allDigestsDefined || (digestsDefs && SzBitArray_Check(digestsDefs, digestIndex)))
+ {
+ p->CRCs.Vals[i] = GetUi32(digestsVals + (size_t)digestsValsIndex * 4);
+ digestsValsIndex++;
+ crcMask |= mask;
+ }
+
+ folderIndex++;
+ }
+ else
+ {
+ UInt64 v;
+ RINOK(ReadNumber(&ssi.sdSizes, &v));
+ unpackPos += v;
+ if (unpackPos < v)
+ return SZ_ERROR_ARCHIVE;
+ if (allDigestsDefined || (digestsDefs && SzBitArray_Check(digestsDefs, digestIndex)))
+ {
+ p->CRCs.Vals[i] = GetUi32(digestsVals + (size_t)digestsValsIndex * 4);
+ digestsValsIndex++;
+ crcMask |= mask;
+ }
+ }
+ }
+
+ if (mask != 0x80)
+ {
+ UInt32 byteIndex = (i - 1) >> 3;
+ p->IsDirs[byteIndex] = isDirMask;
+ p->CRCs.Defs[byteIndex] = crcMask;
+ }
+
+ p->UnpackPositions[i] = unpackPos;
+
+ if (remSubStreams != 0)
+ return SZ_ERROR_ARCHIVE;
+
+ for (;;)
+ {
+ p->FolderToFile[folderIndex] = i;
+ if (folderIndex >= p->db.NumFolders)
+ break;
+ if (!ssi.sdNumSubStreams.Data)
+ return SZ_ERROR_ARCHIVE;
+ RINOK(SzReadNumber32(&ssi.sdNumSubStreams, &numSubStreams));
+ if (numSubStreams != 0)
+ return SZ_ERROR_ARCHIVE;
+ /*
+ {
+ UInt64 folderUnpackSize = SzAr_GetFolderUnpackSize(&p->db, folderIndex);
+ unpackPos += folderUnpackSize;
+ if (unpackPos < folderUnpackSize)
+ return SZ_ERROR_ARCHIVE;
+ }
+ */
+ folderIndex++;
+ }
+
+ if (ssi.sdNumSubStreams.Data && ssi.sdNumSubStreams.Size != 0)
+ return SZ_ERROR_ARCHIVE;
+ }
+}
+ return SZ_OK;
+}
+
+
+static SRes SzReadHeader(
+ CSzArEx *p,
+ CSzData *sd,
+ ILookInStream *inStream,
+ ISzAllocPtr allocMain,
+ ISzAllocPtr allocTemp)
+{
+ UInt32 i;
+ UInt32 numTempBufs = 0;
+ SRes res;
+ CBuf tempBufs[NUM_ADDITIONAL_STREAMS_MAX];
+
+ for (i = 0; i < NUM_ADDITIONAL_STREAMS_MAX; i++)
+ Buf_Init(tempBufs + i);
+
+ res = SzReadHeader2(p, sd, inStream,
+ tempBufs, &numTempBufs,
+ allocMain, allocTemp);
+
+ for (i = 0; i < NUM_ADDITIONAL_STREAMS_MAX; i++)
+ Buf_Free(tempBufs + i, allocTemp);
+
+ RINOK(res);
+
+ if (sd->Size != 0)
+ return SZ_ERROR_FAIL;
+
+ return res;
+}
+
+static SRes SzArEx_Open2(
+ CSzArEx *p,
+ ILookInStream *inStream,
+ ISzAllocPtr allocMain,
+ ISzAllocPtr allocTemp)
+{
+ Byte header[k7zStartHeaderSize];
+ Int64 startArcPos;
+ UInt64 nextHeaderOffset, nextHeaderSize;
+ size_t nextHeaderSizeT;
+ UInt32 nextHeaderCRC;
+ CBuf buf;
+ SRes res;
+
+ startArcPos = 0;
+ RINOK(ILookInStream_Seek(inStream, &startArcPos, SZ_SEEK_CUR));
+
+ RINOK(LookInStream_Read2(inStream, header, k7zStartHeaderSize, SZ_ERROR_NO_ARCHIVE));
+
+ if (!TestSignatureCandidate(header))
+ return SZ_ERROR_NO_ARCHIVE;
+ if (header[6] != k7zMajorVersion)
+ return SZ_ERROR_UNSUPPORTED;
+
+ nextHeaderOffset = GetUi64(header + 12);
+ nextHeaderSize = GetUi64(header + 20);
+ nextHeaderCRC = GetUi32(header + 28);
+
+ p->startPosAfterHeader = startArcPos + k7zStartHeaderSize;
+
+ if (CrcCalc(header + 12, 20) != GetUi32(header + 8))
+ return SZ_ERROR_CRC;
+
+ nextHeaderSizeT = (size_t)nextHeaderSize;
+ if (nextHeaderSizeT != nextHeaderSize)
+ return SZ_ERROR_MEM;
+ if (nextHeaderSizeT == 0)
+ return SZ_OK;
+ if (nextHeaderOffset > nextHeaderOffset + nextHeaderSize ||
+ nextHeaderOffset > nextHeaderOffset + nextHeaderSize + k7zStartHeaderSize)
+ return SZ_ERROR_NO_ARCHIVE;
+
+ {
+ Int64 pos = 0;
+ RINOK(ILookInStream_Seek(inStream, &pos, SZ_SEEK_END));
+ if ((UInt64)pos < startArcPos + nextHeaderOffset ||
+ (UInt64)pos < startArcPos + k7zStartHeaderSize + nextHeaderOffset ||
+ (UInt64)pos < startArcPos + k7zStartHeaderSize + nextHeaderOffset + nextHeaderSize)
+ return SZ_ERROR_INPUT_EOF;
+ }
+
+ RINOK(LookInStream_SeekTo(inStream, startArcPos + k7zStartHeaderSize + nextHeaderOffset));
+
+ if (!Buf_Create(&buf, nextHeaderSizeT, allocTemp))
+ return SZ_ERROR_MEM;
+
+ res = LookInStream_Read(inStream, buf.data, nextHeaderSizeT);
+
+ if (res == SZ_OK)
+ {
+ res = SZ_ERROR_ARCHIVE;
+ if (CrcCalc(buf.data, nextHeaderSizeT) == nextHeaderCRC)
+ {
+ CSzData sd;
+ UInt64 type;
+ sd.Data = buf.data;
+ sd.Size = buf.size;
+
+ res = ReadID(&sd, &type);
+
+ if (res == SZ_OK && type == k7zIdEncodedHeader)
+ {
+ CSzAr tempAr;
+ CBuf tempBuf;
+ Buf_Init(&tempBuf);
+
+ SzAr_Init(&tempAr);
+ res = SzReadAndDecodePackedStreams(inStream, &sd, &tempBuf, 1, p->startPosAfterHeader, &tempAr, allocTemp);
+ SzAr_Free(&tempAr, allocTemp);
+
+ if (res != SZ_OK)
+ {
+ Buf_Free(&tempBuf, allocTemp);
+ }
+ else
+ {
+ Buf_Free(&buf, allocTemp);
+ buf.data = tempBuf.data;
+ buf.size = tempBuf.size;
+ sd.Data = buf.data;
+ sd.Size = buf.size;
+ res = ReadID(&sd, &type);
+ }
+ }
+
+ if (res == SZ_OK)
+ {
+ if (type == k7zIdHeader)
+ {
+ /*
+ CSzData sd2;
+ unsigned ttt;
+ for (ttt = 0; ttt < 40000; ttt++)
+ {
+ SzArEx_Free(p, allocMain);
+ sd2 = sd;
+ res = SzReadHeader(p, &sd2, inStream, allocMain, allocTemp);
+ if (res != SZ_OK)
+ break;
+ }
+ */
+ res = SzReadHeader(p, &sd, inStream, allocMain, allocTemp);
+ }
+ else
+ res = SZ_ERROR_UNSUPPORTED;
+ }
+ }
+ }
+
+ Buf_Free(&buf, allocTemp);
+ return res;
+}
+
+
+SRes SzArEx_Open(CSzArEx *p, ILookInStream *inStream,
+ ISzAllocPtr allocMain, ISzAllocPtr allocTemp)
+{
+ SRes res = SzArEx_Open2(p, inStream, allocMain, allocTemp);
+ if (res != SZ_OK)
+ SzArEx_Free(p, allocMain);
+ return res;
+}
+
+
+SRes SzArEx_Extract(
+ const CSzArEx *p,
+ ILookInStream *inStream,
+ UInt32 fileIndex,
+ UInt32 *blockIndex,
+ Byte **tempBuf,
+ size_t *outBufferSize,
+ size_t *offset,
+ size_t *outSizeProcessed,
+ ISzAllocPtr allocMain,
+ ISzAllocPtr allocTemp)
+{
+ UInt32 folderIndex = p->FileToFolder[fileIndex];
+ SRes res = SZ_OK;
+
+ *offset = 0;
+ *outSizeProcessed = 0;
+
+ if (folderIndex == (UInt32)-1)
+ {
+ ISzAlloc_Free(allocMain, *tempBuf);
+ *blockIndex = folderIndex;
+ *tempBuf = NULL;
+ *outBufferSize = 0;
+ return SZ_OK;
+ }
+
+ if (*tempBuf == NULL || *blockIndex != folderIndex)
+ {
+ UInt64 unpackSizeSpec = SzAr_GetFolderUnpackSize(&p->db, folderIndex);
+ /*
+ UInt64 unpackSizeSpec =
+ p->UnpackPositions[p->FolderToFile[(size_t)folderIndex + 1]] -
+ p->UnpackPositions[p->FolderToFile[folderIndex]];
+ */
+ size_t unpackSize = (size_t)unpackSizeSpec;
+
+ if (unpackSize != unpackSizeSpec)
+ return SZ_ERROR_MEM;
+ *blockIndex = folderIndex;
+ ISzAlloc_Free(allocMain, *tempBuf);
+ *tempBuf = NULL;
+
+ if (res == SZ_OK)
+ {
+ *outBufferSize = unpackSize;
+ if (unpackSize != 0)
+ {
+ *tempBuf = (Byte *)ISzAlloc_Alloc(allocMain, unpackSize);
+ if (*tempBuf == NULL)
+ res = SZ_ERROR_MEM;
+ }
+
+ if (res == SZ_OK)
+ {
+ res = SzAr_DecodeFolder(&p->db, folderIndex,
+ inStream, p->dataPos, *tempBuf, unpackSize, allocTemp);
+ }
+ }
+ }
+
+ if (res == SZ_OK)
+ {
+ UInt64 unpackPos = p->UnpackPositions[fileIndex];
+ *offset = (size_t)(unpackPos - p->UnpackPositions[p->FolderToFile[folderIndex]]);
+ *outSizeProcessed = (size_t)(p->UnpackPositions[(size_t)fileIndex + 1] - unpackPos);
+ if (*offset + *outSizeProcessed > *outBufferSize)
+ return SZ_ERROR_FAIL;
+ if (SzBitWithVals_Check(&p->CRCs, fileIndex))
+ if (CrcCalc(*tempBuf + *offset, *outSizeProcessed) != p->CRCs.Vals[fileIndex])
+ res = SZ_ERROR_CRC;
+ }
+
+ return res;
+}
+
+
+size_t SzArEx_GetFileNameUtf16(const CSzArEx *p, size_t fileIndex, UInt16 *dest)
+{
+ size_t offs = p->FileNameOffsets[fileIndex];
+ size_t len = p->FileNameOffsets[fileIndex + 1] - offs;
+ if (dest != 0)
+ {
+ size_t i;
+ const Byte *src = p->FileNames + offs * 2;
+ for (i = 0; i < len; i++)
+ dest[i] = GetUi16(src + i * 2);
+ }
+ return len;
+}
+
+/*
+size_t SzArEx_GetFullNameLen(const CSzArEx *p, size_t fileIndex)
+{
+ size_t len;
+ if (!p->FileNameOffsets)
+ return 1;
+ len = 0;
+ for (;;)
+ {
+ UInt32 parent = (UInt32)(Int32)-1;
+ len += p->FileNameOffsets[fileIndex + 1] - p->FileNameOffsets[fileIndex];
+ if SzBitWithVals_Check(&p->Parents, fileIndex)
+ parent = p->Parents.Vals[fileIndex];
+ if (parent == (UInt32)(Int32)-1)
+ return len;
+ fileIndex = parent;
+ }
+}
+
+UInt16 *SzArEx_GetFullNameUtf16_Back(const CSzArEx *p, size_t fileIndex, UInt16 *dest)
+{
+ Bool needSlash;
+ if (!p->FileNameOffsets)
+ {
+ *(--dest) = 0;
+ return dest;
+ }
+ needSlash = False;
+ for (;;)
+ {
+ UInt32 parent = (UInt32)(Int32)-1;
+ size_t curLen = p->FileNameOffsets[fileIndex + 1] - p->FileNameOffsets[fileIndex];
+ SzArEx_GetFileNameUtf16(p, fileIndex, dest - curLen);
+ if (needSlash)
+ *(dest - 1) = '/';
+ needSlash = True;
+ dest -= curLen;
+
+ if SzBitWithVals_Check(&p->Parents, fileIndex)
+ parent = p->Parents.Vals[fileIndex];
+ if (parent == (UInt32)(Int32)-1)
+ return dest;
+ fileIndex = parent;
+ }
+}
+*/
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