Adding upstream version 110.0.1.upstream/110.0.1upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 319 insertions, 0 deletions

diff --git a/other-licenses/7zstub/src/C/XzIn.c b/other-licenses/7zstub/src/C/XzIn.c
new file mode 100644
index 0000000000..42da1dece6
--- /dev/null
+++ b/other-licenses/7zstub/src/C/XzIn.c
@@ -0,0 +1,319 @@
+/* XzIn.c - Xz input

+2018-02-02 : Igor Pavlov : Public domain */

+

+#include "Precomp.h"

+

+#include <string.h>

+

+#include "7zCrc.h"

+#include "CpuArch.h"

+#include "Xz.h"

+

+/*

+#define XZ_FOOTER_SIG_CHECK(p) (memcmp((p), XZ_FOOTER_SIG, XZ_FOOTER_SIG_SIZE) == 0)

+*/

+#define XZ_FOOTER_SIG_CHECK(p) ((p)[0] == XZ_FOOTER_SIG_0 && (p)[1] == XZ_FOOTER_SIG_1)

+

+

+SRes Xz_ReadHeader(CXzStreamFlags *p, ISeqInStream *inStream)

+{

+  Byte sig[XZ_STREAM_HEADER_SIZE];

+  RINOK(SeqInStream_Read2(inStream, sig, XZ_STREAM_HEADER_SIZE, SZ_ERROR_NO_ARCHIVE));

+  if (memcmp(sig, XZ_SIG, XZ_SIG_SIZE) != 0)

+    return SZ_ERROR_NO_ARCHIVE;

+  return Xz_ParseHeader(p, sig);

+}

+

+#define READ_VARINT_AND_CHECK(buf, pos, size, res) \

+  { unsigned s = Xz_ReadVarInt(buf + pos, size - pos, res); \

+  if (s == 0) return SZ_ERROR_ARCHIVE; pos += s; }

+

+SRes XzBlock_ReadHeader(CXzBlock *p, ISeqInStream *inStream, Bool *isIndex, UInt32 *headerSizeRes)

+{

+  Byte header[XZ_BLOCK_HEADER_SIZE_MAX];

+  unsigned headerSize;

+  *headerSizeRes = 0;

+  RINOK(SeqInStream_ReadByte(inStream, &header[0]));

+  headerSize = (unsigned)header[0];

+  if (headerSize == 0)

+  {

+    *headerSizeRes = 1;

+    *isIndex = True;

+    return SZ_OK;

+  }

+

+  *isIndex = False;

+  headerSize = (headerSize << 2) + 4;

+  *headerSizeRes = headerSize;

+  RINOK(SeqInStream_Read(inStream, header + 1, headerSize - 1));

+  return XzBlock_Parse(p, header);

+}

+

+#define ADD_SIZE_CHECK(size, val) \

+  { UInt64 newSize = size + (val); if (newSize < size) return XZ_SIZE_OVERFLOW; size = newSize; }

+

+UInt64 Xz_GetUnpackSize(const CXzStream *p)

+{

+  UInt64 size = 0;

+  size_t i;

+  for (i = 0; i < p->numBlocks; i++)

+    ADD_SIZE_CHECK(size, p->blocks[i].unpackSize);

+  return size;

+}

+

+UInt64 Xz_GetPackSize(const CXzStream *p)

+{

+  UInt64 size = 0;

+  size_t i;

+  for (i = 0; i < p->numBlocks; i++)

+    ADD_SIZE_CHECK(size, (p->blocks[i].totalSize + 3) & ~(UInt64)3);

+  return size;

+}

+

+/*

+SRes XzBlock_ReadFooter(CXzBlock *p, CXzStreamFlags f, ISeqInStream *inStream)

+{

+  return SeqInStream_Read(inStream, p->check, XzFlags_GetCheckSize(f));

+}

+*/

+

+static SRes Xz_ReadIndex2(CXzStream *p, const Byte *buf, size_t size, ISzAllocPtr alloc)

+{

+  size_t numBlocks, pos = 1;

+  UInt32 crc;

+

+  if (size < 5 || buf[0] != 0)

+    return SZ_ERROR_ARCHIVE;

+

+  size -= 4;

+  crc = CrcCalc(buf, size);

+  if (crc != GetUi32(buf + size))

+    return SZ_ERROR_ARCHIVE;

+

+  {

+    UInt64 numBlocks64;

+    READ_VARINT_AND_CHECK(buf, pos, size, &numBlocks64);

+    numBlocks = (size_t)numBlocks64;

+    if (numBlocks != numBlocks64 || numBlocks * 2 > size)

+      return SZ_ERROR_ARCHIVE;

+  }

+  

+  Xz_Free(p, alloc);

+  if (numBlocks != 0)

+  {

+    size_t i;

+    p->numBlocks = numBlocks;

+    p->blocks = (CXzBlockSizes *)ISzAlloc_Alloc(alloc, sizeof(CXzBlockSizes) * numBlocks);

+    if (!p->blocks)

+      return SZ_ERROR_MEM;

+    for (i = 0; i < numBlocks; i++)

+    {

+      CXzBlockSizes *block = &p->blocks[i];

+      READ_VARINT_AND_CHECK(buf, pos, size, &block->totalSize);

+      READ_VARINT_AND_CHECK(buf, pos, size, &block->unpackSize);

+      if (block->totalSize == 0)

+        return SZ_ERROR_ARCHIVE;

+    }

+  }

+  while ((pos & 3) != 0)

+    if (buf[pos++] != 0)

+      return SZ_ERROR_ARCHIVE;

+  return (pos == size) ? SZ_OK : SZ_ERROR_ARCHIVE;

+}

+

+static SRes Xz_ReadIndex(CXzStream *p, ILookInStream *stream, UInt64 indexSize, ISzAllocPtr alloc)

+{

+  SRes res;

+  size_t size;

+  Byte *buf;

+  if (indexSize > ((UInt32)1 << 31))

+    return SZ_ERROR_UNSUPPORTED;

+  size = (size_t)indexSize;

+  if (size != indexSize)

+    return SZ_ERROR_UNSUPPORTED;

+  buf = (Byte *)ISzAlloc_Alloc(alloc, size);

+  if (!buf)

+    return SZ_ERROR_MEM;

+  res = LookInStream_Read2(stream, buf, size, SZ_ERROR_UNSUPPORTED);

+  if (res == SZ_OK)

+    res = Xz_ReadIndex2(p, buf, size, alloc);

+  ISzAlloc_Free(alloc, buf);

+  return res;

+}

+

+static SRes LookInStream_SeekRead_ForArc(ILookInStream *stream, UInt64 offset, void *buf, size_t size)

+{

+  RINOK(LookInStream_SeekTo(stream, offset));

+  return LookInStream_Read(stream, buf, size);

+  /* return LookInStream_Read2(stream, buf, size, SZ_ERROR_NO_ARCHIVE); */

+}

+

+static SRes Xz_ReadBackward(CXzStream *p, ILookInStream *stream, Int64 *startOffset, ISzAllocPtr alloc)

+{

+  UInt64 indexSize;

+  Byte buf[XZ_STREAM_FOOTER_SIZE];

+  UInt64 pos = *startOffset;

+

+  if ((pos & 3) != 0 || pos < XZ_STREAM_FOOTER_SIZE)

+    return SZ_ERROR_NO_ARCHIVE;

+

+  pos -= XZ_STREAM_FOOTER_SIZE;

+  RINOK(LookInStream_SeekRead_ForArc(stream, pos, buf, XZ_STREAM_FOOTER_SIZE));

+  

+  if (!XZ_FOOTER_SIG_CHECK(buf + 10))

+  {

+    UInt32 total = 0;

+    pos += XZ_STREAM_FOOTER_SIZE;

+    

+    for (;;)

+    {

+      size_t i;

+      #define TEMP_BUF_SIZE (1 << 10)

+      Byte temp[TEMP_BUF_SIZE];

+      

+      i = (pos > TEMP_BUF_SIZE) ? TEMP_BUF_SIZE : (size_t)pos;

+      pos -= i;

+      RINOK(LookInStream_SeekRead_ForArc(stream, pos, temp, i));

+      total += (UInt32)i;

+      for (; i != 0; i--)

+        if (temp[i - 1] != 0)

+          break;

+      if (i != 0)

+      {

+        if ((i & 3) != 0)

+          return SZ_ERROR_NO_ARCHIVE;

+        pos += i;

+        break;

+      }

+      if (pos < XZ_STREAM_FOOTER_SIZE || total > (1 << 16))

+        return SZ_ERROR_NO_ARCHIVE;

+    }

+    

+    if (pos < XZ_STREAM_FOOTER_SIZE)

+      return SZ_ERROR_NO_ARCHIVE;

+    pos -= XZ_STREAM_FOOTER_SIZE;

+    RINOK(LookInStream_SeekRead_ForArc(stream, pos, buf, XZ_STREAM_FOOTER_SIZE));

+    if (!XZ_FOOTER_SIG_CHECK(buf + 10))

+      return SZ_ERROR_NO_ARCHIVE;

+  }

+  

+  p->flags = (CXzStreamFlags)GetBe16(buf + 8);

+

+  if (!XzFlags_IsSupported(p->flags))

+    return SZ_ERROR_UNSUPPORTED;

+

+  if (GetUi32(buf) != CrcCalc(buf + 4, 6))

+    return SZ_ERROR_ARCHIVE;

+

+  indexSize = ((UInt64)GetUi32(buf + 4) + 1) << 2;

+

+  if (pos < indexSize)

+    return SZ_ERROR_ARCHIVE;

+

+  pos -= indexSize;

+  RINOK(LookInStream_SeekTo(stream, pos));

+  RINOK(Xz_ReadIndex(p, stream, indexSize, alloc));

+

+  {

+    UInt64 totalSize = Xz_GetPackSize(p);

+    if (totalSize == XZ_SIZE_OVERFLOW

+        || totalSize >= ((UInt64)1 << 63)

+        || pos < totalSize + XZ_STREAM_HEADER_SIZE)

+      return SZ_ERROR_ARCHIVE;

+    pos -= (totalSize + XZ_STREAM_HEADER_SIZE);

+    RINOK(LookInStream_SeekTo(stream, pos));

+    *startOffset = pos;

+  }

+  {

+    CXzStreamFlags headerFlags;

+    CSecToRead secToRead;

+    SecToRead_CreateVTable(&secToRead);

+    secToRead.realStream = stream;

+

+    RINOK(Xz_ReadHeader(&headerFlags, &secToRead.vt));

+    return (p->flags == headerFlags) ? SZ_OK : SZ_ERROR_ARCHIVE;

+  }

+}

+

+

+/* ---------- Xz Streams ---------- */

+

+void Xzs_Construct(CXzs *p)

+{

+  p->num = p->numAllocated = 0;

+  p->streams = 0;

+}

+

+void Xzs_Free(CXzs *p, ISzAllocPtr alloc)

+{

+  size_t i;

+  for (i = 0; i < p->num; i++)

+    Xz_Free(&p->streams[i], alloc);

+  ISzAlloc_Free(alloc, p->streams);

+  p->num = p->numAllocated = 0;

+  p->streams = 0;

+}

+

+UInt64 Xzs_GetNumBlocks(const CXzs *p)

+{

+  UInt64 num = 0;

+  size_t i;

+  for (i = 0; i < p->num; i++)

+    num += p->streams[i].numBlocks;

+  return num;

+}

+

+UInt64 Xzs_GetUnpackSize(const CXzs *p)

+{

+  UInt64 size = 0;

+  size_t i;

+  for (i = 0; i < p->num; i++)

+    ADD_SIZE_CHECK(size, Xz_GetUnpackSize(&p->streams[i]));

+  return size;

+}

+

+/*

+UInt64 Xzs_GetPackSize(const CXzs *p)

+{

+  UInt64 size = 0;

+  size_t i;

+  for (i = 0; i < p->num; i++)

+    ADD_SIZE_CHECK(size, Xz_GetTotalSize(&p->streams[i]));

+  return size;

+}

+*/

+

+SRes Xzs_ReadBackward(CXzs *p, ILookInStream *stream, Int64 *startOffset, ICompressProgress *progress, ISzAllocPtr alloc)

+{

+  Int64 endOffset = 0;

+  RINOK(ILookInStream_Seek(stream, &endOffset, SZ_SEEK_END));

+  *startOffset = endOffset;

+  for (;;)

+  {

+    CXzStream st;

+    SRes res;

+    Xz_Construct(&st);

+    res = Xz_ReadBackward(&st, stream, startOffset, alloc);

+    st.startOffset = *startOffset;

+    RINOK(res);

+    if (p->num == p->numAllocated)

+    {

+      size_t newNum = p->num + p->num / 4 + 1;

+      Byte *data = (Byte *)ISzAlloc_Alloc(alloc, newNum * sizeof(CXzStream));

+      if (!data)

+        return SZ_ERROR_MEM;

+      p->numAllocated = newNum;

+      if (p->num != 0)

+        memcpy(data, p->streams, p->num * sizeof(CXzStream));

+      ISzAlloc_Free(alloc, p->streams);

+      p->streams = (CXzStream *)data;

+    }

+    p->streams[p->num++] = st;

+    if (*startOffset == 0)

+      break;

+    RINOK(LookInStream_SeekTo(stream, *startOffset));

+    if (progress && ICompressProgress_Progress(progress, endOffset - *startOffset, (UInt64)(Int64)-1) != SZ_OK)

+      return SZ_ERROR_PROGRESS;

+  }

+  return SZ_OK;

+}