Add m-esr52 at 52.6.0

1 files changed, 389 insertions, 0 deletions

diff --git a/modules/libjar/zipwriter/nsZipHeader.cpp b/modules/libjar/zipwriter/nsZipHeader.cpp
new file mode 100644
index 000000000..af2ee0335
--- /dev/null
+++ b/modules/libjar/zipwriter/nsZipHeader.cpp
@@ -0,0 +1,389 @@
+/* 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;
+}
+
+void 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);
+
+    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 = NS_LITERAL_CSTRING("");
+    // Claim a UTF-8 path in case it needs it.
+    mFlags |= FLAGS_IS_UTF8;
+    mInited = true;
+}
+
+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 = NS_LITERAL_CSTRING("");
+
+    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 = NS_LITERAL_CSTRING("");
+
+    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 = 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;
+}