Adding upstream version 86.0.1.upstream/86.0.1upstream

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

1 files changed, 377 insertions, 0 deletions

diff --git a/modules/libjar/zipwriter/nsZipHeader.cpp b/modules/libjar/zipwriter/nsZipHeader.cpp
new file mode 100644
index 0000000000..8b78ea091d
--- /dev/null
+++ b/modules/libjar/zipwriter/nsZipHeader.cpp
@@ -0,0 +1,377 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ */
+
+#include "StreamFunctions.h"
+#include "nsZipHeader.h"
+#include "nsMemory.h"
+#include "prtime.h"
+
+#define ZIP_FILE_HEADER_SIGNATURE 0x04034b50
+#define ZIP_FILE_HEADER_SIZE 30
+#define ZIP_CDS_HEADER_SIGNATURE 0x02014b50
+#define ZIP_CDS_HEADER_SIZE 46
+
+#define FLAGS_IS_UTF8 0x800
+
+#define ZIP_EXTENDED_TIMESTAMP_FIELD 0x5455
+#define ZIP_EXTENDED_TIMESTAMP_MODTIME 0x01
+
+using namespace mozilla;
+
+/**
+ * nsZipHeader represents an entry from a zip file.
+ */
+NS_IMPL_ISUPPORTS(nsZipHeader, nsIZipEntry)
+
+NS_IMETHODIMP nsZipHeader::GetCompression(uint16_t* aCompression) {
+  NS_ASSERTION(mInited, "Not initalised");
+
+  *aCompression = mMethod;
+  return NS_OK;
+}
+
+NS_IMETHODIMP nsZipHeader::GetSize(uint32_t* aSize) {
+  NS_ASSERTION(mInited, "Not initalised");
+
+  *aSize = mCSize;
+  return NS_OK;
+}
+
+NS_IMETHODIMP nsZipHeader::GetRealSize(uint32_t* aRealSize) {
+  NS_ASSERTION(mInited, "Not initalised");
+
+  *aRealSize = mUSize;
+  return NS_OK;
+}
+
+NS_IMETHODIMP nsZipHeader::GetCRC32(uint32_t* aCRC32) {
+  NS_ASSERTION(mInited, "Not initalised");
+
+  *aCRC32 = mCRC;
+  return NS_OK;
+}
+
+NS_IMETHODIMP nsZipHeader::GetIsDirectory(bool* aIsDirectory) {
+  NS_ASSERTION(mInited, "Not initalised");
+
+  if (mName.Last() == '/')
+    *aIsDirectory = true;
+  else
+    *aIsDirectory = false;
+  return NS_OK;
+}
+
+NS_IMETHODIMP nsZipHeader::GetLastModifiedTime(PRTime* aLastModifiedTime) {
+  NS_ASSERTION(mInited, "Not initalised");
+
+  // Try to read timestamp from extra field
+  uint16_t blocksize;
+  const uint8_t* tsField =
+      GetExtraField(ZIP_EXTENDED_TIMESTAMP_FIELD, false, &blocksize);
+  if (tsField && blocksize >= 5) {
+    uint32_t pos = 4;
+    uint8_t flags;
+    flags = READ8(tsField, &pos);
+    if (flags & ZIP_EXTENDED_TIMESTAMP_MODTIME) {
+      *aLastModifiedTime = (PRTime)(READ32(tsField, &pos)) * PR_USEC_PER_SEC;
+      return NS_OK;
+    }
+  }
+
+  // Use DOS date/time fields
+  // Note that on DST shift we can't handle correctly the hour that is valid
+  // in both DST zones
+  PRExplodedTime time;
+
+  time.tm_usec = 0;
+
+  time.tm_hour = (mTime >> 11) & 0x1F;
+  time.tm_min = (mTime >> 5) & 0x3F;
+  time.tm_sec = (mTime & 0x1F) * 2;
+
+  time.tm_year = (mDate >> 9) + 1980;
+  time.tm_month = ((mDate >> 5) & 0x0F) - 1;
+  time.tm_mday = mDate & 0x1F;
+
+  time.tm_params.tp_gmt_offset = 0;
+  time.tm_params.tp_dst_offset = 0;
+
+  PR_NormalizeTime(&time, PR_GMTParameters);
+  time.tm_params.tp_gmt_offset = PR_LocalTimeParameters(&time).tp_gmt_offset;
+  PR_NormalizeTime(&time, PR_GMTParameters);
+  time.tm_params.tp_dst_offset = PR_LocalTimeParameters(&time).tp_dst_offset;
+
+  *aLastModifiedTime = PR_ImplodeTime(&time);
+
+  return NS_OK;
+}
+
+NS_IMETHODIMP nsZipHeader::GetIsSynthetic(bool* aIsSynthetic) {
+  NS_ASSERTION(mInited, "Not initalised");
+
+  *aIsSynthetic = false;
+  return NS_OK;
+}
+
+NS_IMETHODIMP nsZipHeader::GetPermissions(uint32_t* aPermissions) {
+  NS_ASSERTION(mInited, "Not initalised");
+
+  // Always give user read access at least, this matches nsIZipReader's
+  // behaviour
+  *aPermissions = ((mEAttr >> 16) & 0xfff) | 0x100;
+  return NS_OK;
+}
+
+nsresult nsZipHeader::Init(const nsACString& aPath, PRTime aDate,
+                           uint32_t aAttr, uint32_t aOffset) {
+  NS_ASSERTION(!mInited, "Already initalised");
+
+  PRExplodedTime time;
+  PR_ExplodeTime(aDate, PR_LocalTimeParameters, &time);
+  if (time.tm_year < 1980) {
+    return NS_ERROR_INVALID_ARG;
+  }
+
+  mTime = time.tm_sec / 2 + (time.tm_min << 5) + (time.tm_hour << 11);
+  mDate =
+      time.tm_mday + ((time.tm_month + 1) << 5) + ((time.tm_year - 1980) << 9);
+
+  // Store modification timestamp as extra field
+  // First fill CDS extra field
+  mFieldLength = 9;
+  mExtraField = MakeUnique<uint8_t[]>(mFieldLength);
+  if (!mExtraField) {
+    mFieldLength = 0;
+  } else {
+    uint32_t pos = 0;
+    WRITE16(mExtraField.get(), &pos, ZIP_EXTENDED_TIMESTAMP_FIELD);
+    WRITE16(mExtraField.get(), &pos, 5);
+    WRITE8(mExtraField.get(), &pos, ZIP_EXTENDED_TIMESTAMP_MODTIME);
+    WRITE32(mExtraField.get(), &pos, aDate / PR_USEC_PER_SEC);
+
+    // Fill local extra field
+    mLocalExtraField = MakeUnique<uint8_t[]>(mFieldLength);
+    if (mLocalExtraField) {
+      mLocalFieldLength = mFieldLength;
+      memcpy(mLocalExtraField.get(), mExtraField.get(), mLocalFieldLength);
+    }
+  }
+
+  mEAttr = aAttr;
+  mOffset = aOffset;
+  mName = aPath;
+  mComment.Truncate();
+  // Claim a UTF-8 path in case it needs it.
+  mFlags |= FLAGS_IS_UTF8;
+  mInited = true;
+
+  return NS_OK;
+}
+
+uint32_t nsZipHeader::GetFileHeaderLength() {
+  return ZIP_FILE_HEADER_SIZE + mName.Length() + mLocalFieldLength;
+}
+
+nsresult nsZipHeader::WriteFileHeader(nsIOutputStream* aStream) {
+  NS_ASSERTION(mInited, "Not initalised");
+
+  uint8_t buf[ZIP_FILE_HEADER_SIZE];
+  uint32_t pos = 0;
+  WRITE32(buf, &pos, ZIP_FILE_HEADER_SIGNATURE);
+  WRITE16(buf, &pos, mVersionNeeded);
+  WRITE16(buf, &pos, mFlags);
+  WRITE16(buf, &pos, mMethod);
+  WRITE16(buf, &pos, mTime);
+  WRITE16(buf, &pos, mDate);
+  WRITE32(buf, &pos, mCRC);
+  WRITE32(buf, &pos, mCSize);
+  WRITE32(buf, &pos, mUSize);
+  WRITE16(buf, &pos, mName.Length());
+  WRITE16(buf, &pos, mLocalFieldLength);
+
+  nsresult rv = ZW_WriteData(aStream, (const char*)buf, pos);
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  rv = ZW_WriteData(aStream, mName.get(), mName.Length());
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  if (mLocalFieldLength) {
+    rv = ZW_WriteData(aStream, (const char*)mLocalExtraField.get(),
+                      mLocalFieldLength);
+    NS_ENSURE_SUCCESS(rv, rv);
+  }
+
+  return NS_OK;
+}
+
+uint32_t nsZipHeader::GetCDSHeaderLength() {
+  return ZIP_CDS_HEADER_SIZE + mName.Length() + mComment.Length() +
+         mFieldLength;
+}
+
+nsresult nsZipHeader::WriteCDSHeader(nsIOutputStream* aStream) {
+  NS_ASSERTION(mInited, "Not initalised");
+
+  uint8_t buf[ZIP_CDS_HEADER_SIZE];
+  uint32_t pos = 0;
+  WRITE32(buf, &pos, ZIP_CDS_HEADER_SIGNATURE);
+  WRITE16(buf, &pos, mVersionMade);
+  WRITE16(buf, &pos, mVersionNeeded);
+  WRITE16(buf, &pos, mFlags);
+  WRITE16(buf, &pos, mMethod);
+  WRITE16(buf, &pos, mTime);
+  WRITE16(buf, &pos, mDate);
+  WRITE32(buf, &pos, mCRC);
+  WRITE32(buf, &pos, mCSize);
+  WRITE32(buf, &pos, mUSize);
+  WRITE16(buf, &pos, mName.Length());
+  WRITE16(buf, &pos, mFieldLength);
+  WRITE16(buf, &pos, mComment.Length());
+  WRITE16(buf, &pos, mDisk);
+  WRITE16(buf, &pos, mIAttr);
+  WRITE32(buf, &pos, mEAttr);
+  WRITE32(buf, &pos, mOffset);
+
+  nsresult rv = ZW_WriteData(aStream, (const char*)buf, pos);
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  rv = ZW_WriteData(aStream, mName.get(), mName.Length());
+  NS_ENSURE_SUCCESS(rv, rv);
+  if (mExtraField) {
+    rv = ZW_WriteData(aStream, (const char*)mExtraField.get(), mFieldLength);
+    NS_ENSURE_SUCCESS(rv, rv);
+  }
+  return ZW_WriteData(aStream, mComment.get(), mComment.Length());
+}
+
+nsresult nsZipHeader::ReadCDSHeader(nsIInputStream* stream) {
+  NS_ASSERTION(!mInited, "Already initalised");
+
+  uint8_t buf[ZIP_CDS_HEADER_SIZE];
+
+  nsresult rv = ZW_ReadData(stream, (char*)buf, ZIP_CDS_HEADER_SIZE);
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  uint32_t pos = 0;
+  uint32_t signature = READ32(buf, &pos);
+  if (signature != ZIP_CDS_HEADER_SIGNATURE) return NS_ERROR_FILE_CORRUPTED;
+
+  mVersionMade = READ16(buf, &pos);
+  mVersionNeeded = READ16(buf, &pos);
+  mFlags = READ16(buf, &pos);
+  mMethod = READ16(buf, &pos);
+  mTime = READ16(buf, &pos);
+  mDate = READ16(buf, &pos);
+  mCRC = READ32(buf, &pos);
+  mCSize = READ32(buf, &pos);
+  mUSize = READ32(buf, &pos);
+  uint16_t namelength = READ16(buf, &pos);
+  mFieldLength = READ16(buf, &pos);
+  uint16_t commentlength = READ16(buf, &pos);
+  mDisk = READ16(buf, &pos);
+  mIAttr = READ16(buf, &pos);
+  mEAttr = READ32(buf, &pos);
+  mOffset = READ32(buf, &pos);
+
+  if (namelength > 0) {
+    auto field = MakeUnique<char[]>(namelength);
+    NS_ENSURE_TRUE(field, NS_ERROR_OUT_OF_MEMORY);
+    rv = ZW_ReadData(stream, field.get(), namelength);
+    NS_ENSURE_SUCCESS(rv, rv);
+    mName.Assign(field.get(), namelength);
+  } else
+    mName.Truncate();
+
+  if (mFieldLength > 0) {
+    mExtraField = MakeUnique<uint8_t[]>(mFieldLength);
+    NS_ENSURE_TRUE(mExtraField, NS_ERROR_OUT_OF_MEMORY);
+    rv = ZW_ReadData(stream, (char*)mExtraField.get(), mFieldLength);
+    NS_ENSURE_SUCCESS(rv, rv);
+  }
+
+  if (commentlength > 0) {
+    auto field = MakeUnique<char[]>(commentlength);
+    NS_ENSURE_TRUE(field, NS_ERROR_OUT_OF_MEMORY);
+    rv = ZW_ReadData(stream, field.get(), commentlength);
+    NS_ENSURE_SUCCESS(rv, rv);
+    mComment.Assign(field.get(), commentlength);
+  } else
+    mComment.Truncate();
+
+  mInited = true;
+  return NS_OK;
+}
+
+const uint8_t* nsZipHeader::GetExtraField(uint16_t aTag, bool aLocal,
+                                          uint16_t* aBlockSize) {
+  const uint8_t* buf = aLocal ? mLocalExtraField.get() : mExtraField.get();
+  uint32_t buflen = aLocal ? mLocalFieldLength : mFieldLength;
+  uint32_t pos = 0;
+  uint16_t tag, blocksize;
+
+  while (buf && (pos + 4) <= buflen) {
+    tag = READ16(buf, &pos);
+    blocksize = READ16(buf, &pos);
+
+    if (aTag == tag && (pos + blocksize) <= buflen) {
+      *aBlockSize = blocksize;
+      return buf + pos - 4;
+    }
+
+    pos += blocksize;
+  }
+
+  return nullptr;
+}
+
+/*
+ * Pad extra field to align data starting position to specified size.
+ */
+nsresult nsZipHeader::PadExtraField(uint32_t aOffset, uint16_t aAlignSize) {
+  uint32_t pad_size;
+  uint32_t pa_offset;
+  uint32_t pa_end;
+
+  // Check for range and power of 2.
+  if (aAlignSize < 2 || aAlignSize > 32768 ||
+      (aAlignSize & (aAlignSize - 1)) != 0) {
+    return NS_ERROR_INVALID_ARG;
+  }
+
+  // Point to current starting data position.
+  aOffset += ZIP_FILE_HEADER_SIZE + mName.Length() + mLocalFieldLength;
+
+  // Calculate aligned offset.
+  pa_offset = aOffset & ~(aAlignSize - 1);
+  pa_end = pa_offset + aAlignSize;
+  pad_size = pa_end - aOffset;
+  if (pad_size == 0) {
+    return NS_OK;
+  }
+
+  // Leave enough room(at least 4 bytes) for valid values in extra field.
+  while (pad_size < 4) {
+    pad_size += aAlignSize;
+  }
+  // Extra field length is 2 bytes.
+  if (mLocalFieldLength + pad_size > 65535) {
+    return NS_ERROR_FAILURE;
+  }
+
+  UniquePtr<uint8_t[]> field = std::move(mLocalExtraField);
+  uint32_t pos = mLocalFieldLength;
+
+  mLocalExtraField = MakeUnique<uint8_t[]>(mLocalFieldLength + pad_size);
+  memcpy(mLocalExtraField.get(), field.get(), mLocalFieldLength);
+  // Use 0xFFFF as tag ID to avoid conflict with other IDs.
+  // For more information, please read "Extensible data fields" section in:
+  // http://www.pkware.com/documents/casestudies/APPNOTE.TXT
+  WRITE16(mLocalExtraField.get(), &pos, 0xFFFF);
+  WRITE16(mLocalExtraField.get(), &pos, pad_size - 4);
+  memset(mLocalExtraField.get() + pos, 0, pad_size - 4);
+  mLocalFieldLength += pad_size;
+
+  return NS_OK;
+}