public static void HandleCorruptObject
(
this Activity thisActivity,
CorruptObjectException imageException,
ImageView imageView,
Func <byte> getCount = null,
Action <byte> setCount = null
)
{
if ((getCount != null) && (setCount == null))
{
throw new ArgumentNullException(nameof(setCount));
}
else if ((getCount == null) && (setCount != null))
{
throw new ArgumentNullException(nameof(getCount));
}
else if ((getCount != null) && (setCount != null))
{
byte currentCount = getCount();
if (currentCount == 0)
{
return;
}
setCount(--currentCount);
}
imageView.SetImageResource(Resource.Drawable.CorruptObject);
string exceptionFormat = thisActivity.GetString(Resource.String.CorruptObjectFormat);
string exceptionMessage = string.Format(exceptionFormat,
imageException.Message);
Toast.MakeText
(
thisActivity,
exceptionMessage,
ToastLength.Long
)
.Show();
}
private void Decompress(AnyObjectId id, Inflater inf, int p)
{
try
{
while (!inf.IsFinished)
{
p += inf.Inflate(_bytes, p, _objectSize - p);
}
}
catch (IOException dfe)
{
var coe = new CorruptObjectException(id, "bad stream", dfe);
throw coe;
}
if (p != _objectSize)
{
throw new CorruptObjectException(id, "incorrect Length");
}
}
/// <exception cref="System.IO.IOException"></exception>
internal virtual ObjectLoader Load(WindowCursor curs, long pos)
{
try
{
byte[] ib = curs.tempId;
PackFile.Delta delta = null;
byte[] data = null;
int type = Constants.OBJ_BAD;
bool cached = false;
for (; ;)
{
ReadFully(pos, ib, 0, 20, curs);
int c = ib[0] & unchecked ((int)(0xff));
int typeCode = (c >> 4) & 7;
long sz = c & 15;
int shift = 4;
int p = 1;
while ((c & unchecked ((int)(0x80))) != 0)
{
c = ib[p++] & unchecked ((int)(0xff));
sz += ((long)(c & unchecked ((int)(0x7f)))) << shift;
shift += 7;
}
switch (typeCode)
{
case Constants.OBJ_COMMIT:
case Constants.OBJ_TREE:
case Constants.OBJ_BLOB:
case Constants.OBJ_TAG:
{
if (sz < curs.GetStreamFileThreshold())
{
data = Decompress(pos + p, (int)sz, curs);
}
if (delta != null)
{
type = typeCode;
goto SEARCH_break;
}
if (data != null)
{
return(new ObjectLoader.SmallObject(typeCode, data));
}
else
{
return(new LargePackedWholeObject(typeCode, sz, pos, p, this, curs.db));
}
goto case Constants.OBJ_OFS_DELTA;
}
case Constants.OBJ_OFS_DELTA:
{
c = ib[p++] & unchecked ((int)(0xff));
long @base = c & 127;
while ((c & 128) != 0)
{
@base += 1;
c = ib[p++] & unchecked ((int)(0xff));
@base <<= 7;
@base += (c & 127);
}
@base = pos - @base;
delta = new PackFile.Delta(delta, pos, (int)sz, p, @base);
if (sz != delta.deltaSize)
{
goto SEARCH_break;
}
DeltaBaseCache.Entry e = curs.GetDeltaBaseCache().Get(this, @base);
if (e != null)
{
type = e.type;
data = e.data;
cached = true;
goto SEARCH_break;
}
pos = @base;
goto SEARCH_continue;
}
case Constants.OBJ_REF_DELTA:
{
ReadFully(pos + p, ib, 0, 20, curs);
long @base = FindDeltaBase(ObjectId.FromRaw(ib));
delta = new PackFile.Delta(delta, pos, (int)sz, p + 20, @base);
if (sz != delta.deltaSize)
{
goto SEARCH_break;
}
DeltaBaseCache.Entry e = curs.GetDeltaBaseCache().Get(this, @base);
if (e != null)
{
type = e.type;
data = e.data;
cached = true;
goto SEARCH_break;
}
pos = @base;
goto SEARCH_continue;
}
default:
{
throw new IOException(MessageFormat.Format(JGitText.Get().unknownObjectType, Sharpen.Extensions.ValueOf
(typeCode)));
}
}
SEARCH_continue :;
}
SEARCH_break :;
// At this point there is at least one delta to apply to data.
// (Whole objects with no deltas to apply return early above.)
if (data == null)
{
return(delta.Large(this, curs));
}
do
{
// Cache only the base immediately before desired object.
if (cached)
{
cached = false;
}
else
{
if (delta.next == null)
{
curs.GetDeltaBaseCache().Store(this, delta.basePos, data, type);
}
}
pos = delta.deltaPos;
byte[] cmds = Decompress(pos + delta.hdrLen, delta.deltaSize, curs);
if (cmds == null)
{
data = null;
// Discard base in case of OutOfMemoryError
return(delta.Large(this, curs));
}
long sz = BinaryDelta.GetResultSize(cmds);
if (int.MaxValue <= sz)
{
return(delta.Large(this, curs));
}
byte[] result;
try
{
result = new byte[(int)sz];
}
catch (OutOfMemoryException)
{
data = null;
// Discard base in case of OutOfMemoryError
return(delta.Large(this, curs));
}
BinaryDelta.Apply(data, cmds, result);
data = result;
delta = delta.next;
}while (delta != null);
return(new ObjectLoader.SmallObject(type, data));
}
catch (SharpZipBaseException dfe)
{
CorruptObjectException coe = new CorruptObjectException(MessageFormat.Format(JGitText
.Get().objectAtHasBadZlibStream, Sharpen.Extensions.ValueOf(pos), GetPackFile())
);
Sharpen.Extensions.InitCause(coe, dfe);
throw coe;
}
}
/// <exception cref="System.IO.IOException"></exception>
/// <exception cref="NGit.Errors.StoredObjectRepresentationNotAvailableException"></exception>
private void CopyAsIs2(PackOutputStream @out, LocalObjectToPack src, bool validate
, WindowCursor curs)
{
CRC32 crc1 = validate ? new CRC32() : null;
CRC32 crc2 = validate ? new CRC32() : null;
byte[] buf = @out.GetCopyBuffer();
// Rip apart the header so we can discover the size.
//
ReadFully(src.offset, buf, 0, 20, curs);
int c = buf[0] & unchecked ((int)(0xff));
int typeCode = (c >> 4) & 7;
long inflatedLength = c & 15;
int shift = 4;
int headerCnt = 1;
while ((c & unchecked ((int)(0x80))) != 0)
{
c = buf[headerCnt++] & unchecked ((int)(0xff));
inflatedLength += ((long)(c & unchecked ((int)(0x7f)))) << shift;
shift += 7;
}
if (typeCode == Constants.OBJ_OFS_DELTA)
{
do
{
c = buf[headerCnt++] & unchecked ((int)(0xff));
}while ((c & 128) != 0);
if (validate)
{
crc1.Update(buf, 0, headerCnt);
crc2.Update(buf, 0, headerCnt);
}
}
else
{
if (typeCode == Constants.OBJ_REF_DELTA)
{
if (validate)
{
crc1.Update(buf, 0, headerCnt);
crc2.Update(buf, 0, headerCnt);
}
ReadFully(src.offset + headerCnt, buf, 0, 20, curs);
if (validate)
{
crc1.Update(buf, 0, 20);
crc2.Update(buf, 0, 20);
}
headerCnt += 20;
}
else
{
if (validate)
{
crc1.Update(buf, 0, headerCnt);
crc2.Update(buf, 0, headerCnt);
}
}
}
long dataOffset = src.offset + headerCnt;
long dataLength = src.length;
long expectedCRC;
ByteArrayWindow quickCopy;
// Verify the object isn't corrupt before sending. If it is,
// we report it missing instead.
//
try
{
quickCopy = curs.QuickCopy(this, dataOffset, dataLength);
if (validate && Idx().HasCRC32Support())
{
// Index has the CRC32 code cached, validate the object.
//
expectedCRC = Idx().FindCRC32(src);
if (quickCopy != null)
{
quickCopy.Crc32(crc1, dataOffset, (int)dataLength);
}
else
{
long pos = dataOffset;
long cnt = dataLength;
while (cnt > 0)
{
int n = (int)Math.Min(cnt, buf.Length);
ReadFully(pos, buf, 0, n, curs);
crc1.Update(buf, 0, n);
pos += n;
cnt -= n;
}
}
if (crc1.GetValue() != expectedCRC)
{
SetCorrupt(src.offset);
throw new CorruptObjectException(MessageFormat.Format(JGitText.Get().objectAtHasBadZlibStream
, Sharpen.Extensions.ValueOf(src.offset), GetPackFile()));
}
}
else
{
if (validate)
{
// We don't have a CRC32 code in the index, so compute it
// now while inflating the raw data to get zlib to tell us
// whether or not the data is safe.
//
Inflater inf = curs.Inflater();
byte[] tmp = new byte[1024];
if (quickCopy != null)
{
quickCopy.Check(inf, tmp, dataOffset, (int)dataLength);
}
else
{
long pos = dataOffset;
long cnt = dataLength;
while (cnt > 0)
{
int n = (int)Math.Min(cnt, buf.Length);
ReadFully(pos, buf, 0, n, curs);
crc1.Update(buf, 0, n);
inf.SetInput(buf, 0, n);
while (inf.Inflate(tmp, 0, tmp.Length) > 0)
{
continue;
}
pos += n;
cnt -= n;
}
}
if (!inf.IsFinished || inf.TotalIn != dataLength)
{
SetCorrupt(src.offset);
throw new EOFException(MessageFormat.Format(JGitText.Get().shortCompressedStreamAt
, Sharpen.Extensions.ValueOf(src.offset)));
}
expectedCRC = crc1.GetValue();
}
else
{
expectedCRC = -1;
}
}
}
catch (SharpZipBaseException dataFormat)
{
SetCorrupt(src.offset);
CorruptObjectException corruptObject = new CorruptObjectException(MessageFormat.Format
(JGitText.Get().objectAtHasBadZlibStream, Sharpen.Extensions.ValueOf(src.offset)
, GetPackFile()));
Sharpen.Extensions.InitCause(corruptObject, dataFormat);
StoredObjectRepresentationNotAvailableException gone;
gone = new StoredObjectRepresentationNotAvailableException(src);
Sharpen.Extensions.InitCause(gone, corruptObject);
throw gone;
}
catch (IOException ioError)
{
StoredObjectRepresentationNotAvailableException gone;
gone = new StoredObjectRepresentationNotAvailableException(src);
Sharpen.Extensions.InitCause(gone, ioError);
throw gone;
}
if (quickCopy != null)
{
// The entire object fits into a single byte array window slice,
// and we have it pinned. Write this out without copying.
//
@out.WriteHeader(src, inflatedLength);
quickCopy.Write(@out, dataOffset, (int)dataLength, null);
}
else
{
if (dataLength <= buf.Length)
{
// Tiny optimization: Lots of objects are very small deltas or
// deflated commits that are likely to fit in the copy buffer.
//
if (!validate)
{
long pos = dataOffset;
long cnt = dataLength;
while (cnt > 0)
{
int n = (int)Math.Min(cnt, buf.Length);
ReadFully(pos, buf, 0, n, curs);
pos += n;
cnt -= n;
}
}
@out.WriteHeader(src, inflatedLength);
@out.Write(buf, 0, (int)dataLength);
}
else
{
// Now we are committed to sending the object. As we spool it out,
// check its CRC32 code to make sure there wasn't corruption between
// the verification we did above, and us actually outputting it.
//
@out.WriteHeader(src, inflatedLength);
long pos = dataOffset;
long cnt = dataLength;
while (cnt > 0)
{
int n = (int)Math.Min(cnt, buf.Length);
ReadFully(pos, buf, 0, n, curs);
if (validate)
{
crc2.Update(buf, 0, n);
}
@out.Write(buf, 0, n);
pos += n;
cnt -= n;
}
if (validate && crc2.GetValue() != expectedCRC)
{
throw new CorruptObjectException(MessageFormat.Format(JGitText.Get().objectAtHasBadZlibStream
, Sharpen.Extensions.ValueOf(src.offset), GetPackFile()));
}
}
}
}
private UnpackedObjectLoader(byte[] compressed, AnyObjectId id)
{
// Try to determine if this is a legacy format loose object or
// a new style loose object. The legacy format was completely
// compressed with zlib so the first byte must be 0x78 (15-bit
// window size, deflated) and the first 16 bit word must be
// evenly divisible by 31. Otherwise its a new style loose
// object.
//
Inflater inflater = InflaterCache.Instance.get();
try
{
int fb = compressed[0] & 0xff;
if (fb == 0x78 && (((fb << 8) | compressed[1] & 0xff) % 31) == 0)
{
inflater.SetInput(compressed);
var hdr = new byte[64];
int avail = 0;
while (!inflater.IsFinished && avail < hdr.Length)
{
try
{
avail += inflater.Inflate(hdr, avail, hdr.Length - avail);
}
catch (IOException dfe)
{
var coe = new CorruptObjectException(id, "bad stream", dfe);
//inflater.end();
throw coe;
}
}
if (avail < 5)
{
throw new CorruptObjectException(id, "no header");
}
var p = new MutableInteger();
_objectType = Constants.decodeTypeString(id, hdr, (byte)' ', p);
_objectSize = RawParseUtils.parseBase10(hdr, p.value, p);
if (_objectSize < 0)
{
throw new CorruptObjectException(id, "negative size");
}
if (hdr[p.value++] != 0)
{
throw new CorruptObjectException(id, "garbage after size");
}
_bytes = new byte[_objectSize];
if (p.value < avail)
{
Array.Copy(hdr, p.value, _bytes, 0, avail - p.value);
}
Decompress(id, inflater, avail - p.value);
}
else
{
int p = 0;
int c = compressed[p++] & 0xff;
int typeCode = (c >> 4) & 7;
int size = c & 15;
int shift = 4;
while ((c & 0x80) != 0)
{
c = compressed[p++] & 0xff;
size += (c & 0x7f) << shift;
shift += 7;
}
switch (typeCode)
{
case Constants.OBJ_COMMIT:
case Constants.OBJ_TREE:
case Constants.OBJ_BLOB:
case Constants.OBJ_TAG:
_objectType = typeCode;
break;
default:
throw new CorruptObjectException(id, "invalid type");
}
_objectSize = size;
_bytes = new byte[_objectSize];
inflater.SetInput(compressed, p, compressed.Length - p);
Decompress(id, inflater, 0);
}
}
finally
{
InflaterCache.Instance.release(inflater);
}
}
private static async Task RenderThumbnailAsync
(
this PortableAsyncRenderer <Bitmap> asyncRenderer,
PortableCorrelatedEntity correlatedEntity,
Action <Action> runOnUiThread,
AndroidCachingImageView thumbnailView,
int thumbnailWidth,
int thumbnailHeight,
Resources activityResources,
Drawable originalBackground,
AnimationDrawable loadingAnimation,
Action <CorruptObjectException, ImageView> onCorrupt,
Action <ImageView, Drawable, AnimationDrawable, bool> onFinished
)
{
bool isLoaded = false;
if (correlatedEntity.CorrelationTag != thumbnailView.GetCorrelationTag())
{
onFinished?.Invoke(thumbnailView,
originalBackground,
loadingAnimation,
isLoaded);
return;
}
Bitmap thumbnailBitmap = null;
CorruptObjectException thumbnailException = null;
BitmapDrawable thumbnailDrawable = AndroidCrapApplication.GetDrawableFromCache
(
correlatedEntity.CorrelationTag
);
if (thumbnailDrawable == null)
{
try
{
/*thumbnailDrawable = AndroidCrapApplication.GetReusableBitmapDrawable(thumbnailWidth,
* thumbnailHeight);*/
thumbnailBitmap = await asyncRenderer.GetThumbnailAsync
(
correlatedEntity,
() => thumbnailView.GetCorrelationTag(),
thumbnailWidth,
thumbnailHeight//,
//thumbnailDrawable.Bitmap
);
}
catch (Exception exception)
{
AndroidCrapApplication.ApplicationLogger.LogError(exception);
thumbnailBitmap?.Dispose();
thumbnailException = exception as CorruptObjectException;
if (thumbnailException == null)
{
throw;
}
else
{
runOnUiThread
(
() => onCorrupt(thumbnailException,
thumbnailView)
);
}
onFinished?.Invoke(thumbnailView,
originalBackground,
loadingAnimation,
isLoaded);
return;
}
if (correlatedEntity.CorrelationTag != thumbnailView.GetCorrelationTag())
{
thumbnailBitmap?.Dispose();
onFinished?.Invoke(thumbnailView,
originalBackground,
loadingAnimation,
isLoaded);
return;
}
if (thumbnailBitmap == null)
{
onFinished?.Invoke(thumbnailView,
originalBackground,
loadingAnimation,
isLoaded);
return;
}
thumbnailDrawable = AndroidCrapApplication.AddBitmapToCache
(
correlatedEntity.CorrelationTag,
thumbnailBitmap,
activityResources
);
}
isLoaded = true;
onFinished?.Invoke(thumbnailView,
originalBackground,
loadingAnimation,
isLoaded);
runOnUiThread
(
() => { thumbnailView.SetImageDrawable(thumbnailDrawable); }
);
/*AndroidCrapApplication.ApplicationLogger.LogDebug("{0} : {1}",
* correlatedEntity.CorrelationTag,
* GC.GetTotalMemory(false));*/
}
private async void LoadImageAsync()
{
if (_deviceOrientation == null)
{
_deviceOrientation = Intent.GetIntExtra(DeviceOrientationExtra,
OrientationEventListener.OrientationUnknown);
}
if (_deviceOrientation == OrientationEventListener.OrientationUnknown)
{
_deviceOrientation = 0;
}
// http://stackoverflow.com/questions/20902775/how-to-check-if-auto-rotate-screen-setting-is-on-off-in-android-4-0
bool autoRotation = (Settings.System.GetInt(ContentResolver,
Settings.System.AccelerometerRotation, 0) == 1);
int pictureOrientation = await AndroidExifHandler.GetPictureOrientationAsync(_picturePath);
if (autoRotation == false)
{
pictureOrientation += (360 - _deviceOrientation.Value) % 360;
}
int viewWidth = _imageView.Width;
int viewHeight = _imageView.Height;
DisplayMetrics displayMetrics = Resources.DisplayMetrics;
double displayWidth = displayMetrics.WidthPixels;
var displayHeight = displayMetrics.HeightPixels;
Size bitmapSize = await AndroidBitmapHandler.GetBitmapSizeAsync(_picturePath);
int imageWidth = bitmapSize.Width;
int imageHeight = bitmapSize.Height;
// when auto-rotation switched off, image view rectangle may be 'wrongly rotated' for
// the image width / height as saved (without taking picture rotation flag into account):
if ((autoRotation == false) ||
((displayWidth - displayHeight) * (imageWidth - imageHeight) < 0))
{
viewWidth = _imageView.Height;
viewHeight = _imageView.Width;
}
Bitmap imageBitmap = null;
CorruptObjectException imageException = null;
try
{
// resize the bitmap to fit the display - loading the full sized image will consume too much memory:
imageBitmap = await AndroidBitmapHandler.LoadAdjustedBitmapAsync
(
_picturePath,
viewWidth,
viewHeight,
pictureOrientation
);
}
catch (Exception exception)
{
imageException = exception as CorruptObjectException;
if (imageException == null)
{
throw;
}
}
RunOnUiThread
(
() =>
{
if (imageException != null)
{
this.HandleCorruptObject(imageException,
_imageView);
}
else
{
using (imageBitmap)
{
_imageView.SetImageBitmap(imageBitmap);
}
imageBitmap = null;
_attributesButton.Visibility = ViewStates.Visible;
_rotateButton.Visibility = ViewStates.Visible;
}
}
);
}
