} // ReadAsync_AbstractStream
#endregion ReadAsync implementations
#region WriteAsync implementations
internal static IAsyncOperationWithProgress <uint, uint> WriteAsync_AbstractStream(Stream stream, IBuffer buffer)
{
Debug.Assert(stream != null);
Debug.Assert(stream.CanWrite);
Debug.Assert(buffer != null);
// Choose the optimal writing strategy for the kind of buffer supplied:
Func <CancellationToken, IProgress <uint>, Task <uint> > writeOperation;
byte[] data;
int offset;
// If buffer is backed by a managed array:
if (buffer.TryGetUnderlyingData(out data, out offset))
{
writeOperation = async(cancelToken, progressListener) =>
{
if (cancelToken.IsCancellationRequested) // CancellationToken is non-nullable
{
return(0);
}
Debug.Assert(buffer.Length <= int.MaxValue);
int bytesToWrite = (int)buffer.Length;
await stream.WriteAsync(data, offset, bytesToWrite, cancelToken).ConfigureAwait(continueOnCapturedContext: false);
if (progressListener != null)
{
progressListener.Report((uint)bytesToWrite);
}
return((uint)bytesToWrite);
};
// Otherwise buffer is of an unknown implementation:
}
else
{
writeOperation = async(cancelToken, progressListener) =>
{
if (cancelToken.IsCancellationRequested) // CancellationToken is non-nullable
{
return(0);
}
uint bytesToWrite = buffer.Length;
Stream dataStream = buffer.AsStream();
int buffSize = 0x4000;
if (bytesToWrite < buffSize)
{
buffSize = (int)bytesToWrite;
}
await dataStream.CopyToAsync(stream, buffSize, cancelToken).ConfigureAwait(continueOnCapturedContext: false);
if (progressListener != null)
{
progressListener.Report((uint)bytesToWrite);
}
return((uint)bytesToWrite);
};
} // if-else
// Construct and run the async operation:
return(AsyncInfo.Run <UInt32, UInt32>(writeOperation));
} // WriteAsync_AbstractStream
public static string GetSVG(
ExportStyle style,
CharacterRenderingOptions options,
Character selectedChar)
{
// We want to prepare geometry at 1024px, so force this
options = options with {
FontSize = 1024
};
using var typography = options.CreateCanvasTypography();
CanvasDevice device = Utils.CanvasDevice;
Color textColor = style == ExportStyle.Black ? Colors.Black : Colors.White;
// If COLR format (e.g. Segoe UI Emoji), we have special export path.
if (style == ExportStyle.ColorGlyph && options.Analysis.HasColorGlyphs && !options.Analysis.GlyphFormats.Contains(GlyphImageFormat.Svg))
{
NativeInterop interop = Utils.GetInterop();
List <string> paths = new List <string>();
Rect bounds = Rect.Empty;
// Try to find the bounding box of all glyph layers combined
foreach (var thing in options.Analysis.Indicies)
{
var path = interop.GetPathDatas(options.Variant.FontFace, thing.ToArray()).First();
paths.Add(path.Path);
if (!path.Bounds.IsEmpty)
{
var left = Math.Min(bounds.Left, path.Bounds.Left);
var top = Math.Min(bounds.Top, path.Bounds.Top);
var right = Math.Max(bounds.Right, path.Bounds.Right);
var bottom = Math.Max(bounds.Bottom, path.Bounds.Bottom);
bounds = new Rect(
left,
top,
right - left,
bottom - top);
}
}
using CanvasSvgDocument document = Utils.GenerateSvgDocument(device, bounds, paths, options.Analysis.Colors, invertBounds: false);
return(document.GetXml());
}
var data = GetGeometry(selectedChar, options);
string GetMonochrome()
{
using CanvasSvgDocument document = string.IsNullOrWhiteSpace(data.Path)
? new CanvasSvgDocument(Utils.CanvasDevice)
: Utils.GenerateSvgDocument(device, data.Bounds, data.Path, textColor);
return(document.GetXml());
}
// If the font uses SVG glyphs, we can extract the raw SVG from the font file
if (options.Analysis.GlyphFormats.Contains(GlyphImageFormat.Svg))
{
string str = null;
IBuffer b = GetGlyphBuffer(options.Variant.FontFace, selectedChar.UnicodeIndex, GlyphImageFormat.Svg);
if (b.Length > 2 && b.GetByte(0) == 31 && b.GetByte(1) == 139)
{
using var stream = b.AsStream();
using var gzip = new GZipStream(stream, CompressionMode.Decompress);
using var reader = new StreamReader(gzip);
str = reader.ReadToEnd();
}
else
{
using var dataReader = DataReader.FromBuffer(b);
dataReader.UnicodeEncoding = Windows.Storage.Streams.UnicodeEncoding.Utf8;
str = dataReader.ReadString(b.Length);
}
if (str.StartsWith("<?xml"))
{
str = str.Remove(0, str.IndexOf(">") + 1);
}
str = str.TrimStart();
try
{
using (CanvasSvgDocument document = CanvasSvgDocument.LoadFromXml(Utils.CanvasDevice, str))
{
// We need to transform the SVG to fit within the default document bounds, as characters
// are based *above* the base origin of (0,0) as (0,0) is the Baseline (bottom left) position for a character,
// so by default a will appear out of bounds of the default SVG viewport (towards top left).
//if (!document.Root.IsAttributeSpecified("viewBox")) // Specified viewbox requires baseline transform?
{
// We'll regroup all the elements inside a "g" / group tag,
// and apply a transform to the "g" tag to try and put in
// in the correct place. There's probably a more accurate way
// to do this by directly setting the root viewBox, if anyone
// can find the correct calculation...
List <ICanvasSvgElement> elements = new List <ICanvasSvgElement>();
double minTop = 0;
double minLeft = double.MaxValue;
double maxWidth = double.MinValue;
double maxHeight = double.MinValue;
void ProcessChildren(CanvasSvgNamedElement root)
{
CanvasSvgNamedElement ele = root.FirstChild as CanvasSvgNamedElement;
while (true)
{
CanvasSvgNamedElement next = root.GetNextSibling(ele) as CanvasSvgNamedElement;
if (ele.Tag == "g")
{
ProcessChildren(ele);
}
else if (ele.Tag == "path")
{
// Create a XAML geometry to try and find the bounds of each character
// Probably more efficient to do in Win2D, but far less code to do with XAML.
Geometry gm = XamlBindingHelper.ConvertValue(typeof(Geometry), ele.GetStringAttribute("d")) as Geometry;
minTop = Math.Min(minTop, gm.Bounds.Top);
minLeft = Math.Min(minLeft, gm.Bounds.Left);
maxWidth = Math.Max(maxWidth, gm.Bounds.Width);
maxHeight = Math.Max(maxHeight, gm.Bounds.Height);
}
ele = next;
if (ele == null)
{
break;
}
}
}
ProcessChildren(document.Root);
double top = minTop < 0 ? minTop : 0;
double left = minLeft;
document.Root.SetRectangleAttribute("viewBox", new Rect(left, top, data.Bounds.Width, data.Bounds.Height));
}
return(document.GetXml());
}
}
catch
{
// Certain fonts seem to have their SVG glyphs encoded with... I don't even know what encoding.
// for example: https://github.com/adobe-fonts/emojione-color
// In these cases, fallback to monochrome black
return(GetMonochrome());
}
}
else
{
return(GetMonochrome());
}
}
/// <summary>
/// Clicking on the save button saves the photo in MainPage.ImageStream
/// to media library camera roll. Once image has been saved, the
/// application will navigate back to the main page.
/// </summary>
private async void SaveButton_Click(object sender, EventArgs e)
{
_progressIndicator.Text = AppResources.SavingText;
_progressIndicator.IsVisible = true;
SystemTray.SetProgressIndicator(this, _progressIndicator);
int selectedIndex = FilterPreviewPivot.SelectedIndex;
DataContext dataContext = FilterEffects.DataContext.Instance;
GC.Collect();
try
{
if (selectedIndex == 0)
{
using (MediaLibrary library = new MediaLibrary())
{
dataContext.FullResolutionStream.Position = 0;
library.SavePictureToCameraRoll(FileNamePrefix
+ DateTime.Now.ToString() + ".jpg",
dataContext.FullResolutionStream);
}
}
else
{
AbstractFilter filter = _filters[selectedIndex];
IBuffer buffer = await filter.RenderJpegAsync(
dataContext.FullResolutionStream.GetWindowsRuntimeBuffer());
using (MediaLibrary library = new MediaLibrary())
{
library.SavePictureToCameraRoll(FileNamePrefix
+ DateTime.Now.ToString() + ".jpg", buffer.AsStream());
}
}
}
catch (Exception ex)
{
MessageBox.Show("Failed to save the image: " + ex.ToString());
}
_progressIndicator.IsVisible = false;
SystemTray.SetProgressIndicator(this, _progressIndicator);
NavigationService.GoBack();
}
/// <summary>
/// API for getting installation status.
/// </summary>
/// <returns>The status</returns>
#pragma warning disable 1998
public async Task <ApplicationInstallStatus> GetInstallStatusAsync()
{
ApplicationInstallStatus status = ApplicationInstallStatus.None;
Uri uri = Utilities.BuildEndpoint(
this.deviceConnection.Connection,
InstallStateApi);
HttpBaseProtocolFilter httpFilter = new HttpBaseProtocolFilter();
httpFilter.AllowUI = false;
if (this.deviceConnection.Credentials != null)
{
httpFilter.ServerCredential = new PasswordCredential();
httpFilter.ServerCredential.UserName = this.deviceConnection.Credentials.UserName;
httpFilter.ServerCredential.Password = this.deviceConnection.Credentials.Password;
}
using (HttpClient client = new HttpClient(httpFilter))
{
this.ApplyHttpHeaders(client, HttpMethods.Get);
IAsyncOperationWithProgress <HttpResponseMessage, HttpProgress> responseOperation = client.GetAsync(uri);
while (responseOperation.Status != AsyncStatus.Completed)
{
}
using (HttpResponseMessage response = responseOperation.GetResults())
{
if (response.IsSuccessStatusCode)
{
if (response.StatusCode == HttpStatusCode.Ok)
{
// Status code: 200
if (response.Content != null)
{
Stream dataStream = null;
IBuffer dataBuffer = null;
using (IHttpContent messageContent = response.Content)
{
IAsyncOperationWithProgress <IBuffer, ulong> bufferOperation = messageContent.ReadAsBufferAsync();
while (bufferOperation.Status != AsyncStatus.Completed)
{
}
dataBuffer = bufferOperation.GetResults();
if (dataBuffer != null)
{
dataStream = dataBuffer.AsStream();
}
}
if (dataStream != null)
{
DataContractJsonSerializer serializer = new DataContractJsonSerializer(typeof(HttpErrorResponse));
HttpErrorResponse errorResponse = (HttpErrorResponse)serializer.ReadObject(dataStream);
if (errorResponse.Success)
{
status = ApplicationInstallStatus.Completed;
}
else
{
throw new DevicePortalException(response.StatusCode, errorResponse, uri);
}
}
else
{
throw new DevicePortalException(HttpStatusCode.Conflict, "Failed to deserialize GetInstallStatus response.");
}
}
}
else if (response.StatusCode == HttpStatusCode.NoContent)
{
// Status code: 204
status = ApplicationInstallStatus.InProgress;
}
}
else
{
throw new DevicePortalException(response);
}
}
}
return(status);
}
/// <summary>
/// Initializes a new instance of the <see cref="DevicePortalException"/> class.
/// </summary>
/// <param name="responseMessage">Http response message.</param>
/// <param name="message">Optional exception message.</param>
/// <param name="innerException">Optional inner exception.</param>
/// <returns>async task</returns>
public static async Task <DevicePortalException> CreateAsync(
HttpResponseMessage responseMessage,
string message = "",
Exception innerException = null)
{
DevicePortalException error = new DevicePortalException(
responseMessage.StatusCode,
responseMessage.ReasonPhrase,
responseMessage.RequestMessage != null ? responseMessage.RequestMessage.RequestUri : null,
message,
innerException);
try
{
if (responseMessage.Content != null)
{
Stream dataStream = null;
#if !WINDOWS_UWP
using (HttpContent content = responseMessage.Content)
{
dataStream = new MemoryStream();
await content.CopyToAsync(dataStream).ConfigureAwait(false);
// Ensure we point the stream at the origin.
dataStream.Position = 0;
}
#else // WINDOWS_UWP
IBuffer dataBuffer = null;
using (IHttpContent messageContent = responseMessage.Content)
{
dataBuffer = await messageContent.ReadAsBufferAsync();
if (dataBuffer != null)
{
dataStream = dataBuffer.AsStream();
}
}
#endif // WINDOWS_UWP
if (dataStream != null)
{
DataContractJsonSerializer serializer = new DataContractJsonSerializer(typeof(HttpErrorResponse));
HttpErrorResponse errorResponse = (HttpErrorResponse)serializer.ReadObject(dataStream);
error.HResult = errorResponse.ErrorCode;
error.Reason = errorResponse.ErrorMessage;
// If we didn't get the Hresult and reason from these properties, try the other ones.
if (error.HResult == 0)
{
error.HResult = errorResponse.Code;
}
if (string.IsNullOrEmpty(error.Reason))
{
error.Reason = errorResponse.Reason;
}
dataStream.Dispose();
}
}
}
catch (Exception)
{
// Do nothing if we fail to get additional error details from the response body.
}
return(error);
}
private async void we_NavigationStarting(WebView sender, WebViewNavigationStartingEventArgs args)//web控件的载入事件，点击内容都会触发这个事件
{
zhuangtai2 = true;
if (zhuangtai == true)
{
if (args.Uri != null)
{
if (args.Uri.AbsoluteUri.Contains("img1.") == true)//判断打开的是不是图片
{
args.Cancel = true;
返回.Visibility = Visibility.Visible;
位.Visibility = Visibility.Visible;
保存.Visibility = Visibility.Visible;
TPG.Visibility = Visibility.Visible;
刷新.Visibility = Visibility.Collapsed;
一页.Visibility = Visibility.Collapsed;
一页.Visibility = Visibility.Collapsed;
评论.Visibility = Visibility.Collapsed;
DM0.Begin();
try
{
if (lsuri != args.Uri.AbsoluteUri)
{
TPS.Source = null;
inStream = null;
HttpClient webClient = new HttpClient();
inStream = await webClient.GetBufferAsync(new Uri(args.Uri.AbsoluteUri.Substring(args.Uri.AbsoluteUri.LastIndexOf("http"))));
}
else
{
lsuri = args.Uri.AbsoluteUri;
}
if (inStream.Length < 900000)//判断图片的大小
{
CT.ScaleX = CT.ScaleY = 1;
CT.TranslateX = CT.TranslateY = 0;
zb = 0;
zb2 = 0;
zb3 = 1;
BitmapImage img = new BitmapImage();
await img.SetSourceAsync(inStream.AsStream().AsRandomAccessStream());
img.ImageOpened += new RoutedEventHandler(bi_ImageOpened);
img.ImageFailed += new ExceptionRoutedEventHandler(bi_ImageFailed);
img.CreateOptions = BitmapCreateOptions.IgnoreImageCache;
TPS.Source = img;
img = null;
PB.Visibility = Visibility.Collapsed;
}
else
{
TPT.Text = "抱歉！由于WindowsPhone内存限制，不能在一般应用里预览 超高清的大图，但你仍然可以保存到图库，去图库->保存的图片里查看！";
TPT.Visibility = Visibility.Visible;
PB.Visibility = Visibility.Collapsed;
}
}
catch (Exception e)
{
PB.Visibility = Visibility.Collapsed;
TPT.Visibility = Visibility.Visible;
TPT.Text = "图片载入错误：" + e.Message + " 请与作者联系！";
}
istpdk = true;
}
else if (args.Uri.AbsoluteUri.Contains("acg.gamersky") == true)//判断打开的是超链接
{
args.Cancel = true;
if (args.Uri.AbsoluteUri.Contains("pic/mm") || args.Uri.AbsoluteUri.Contains("pic/xz") || args.Uri.AbsoluteUri.Contains("pic/cosplay"))
{
Frame.Navigate(typeof(TPPage));
Frame.BackStack.RemoveAt(Frame.BackStackDepth - 1);
}
else if (args.Uri.AbsoluteUri.Contains("donghua"))
{
args.Cancel = true;
WB(args.Uri.AbsoluteUri);
}
else
{
Frame.Navigate(typeof(NewsPage), @"http://wap.gamersky.com/news/Content-" + args.Uri.AbsoluteUri.Substring(args.Uri.AbsoluteUri.LastIndexOf(@"/") + 1, args.Uri.AbsoluteUri.LastIndexOf(@".") - 1 - args.Uri.AbsoluteUri.LastIndexOf(@"/")) + ".html");
}
}
else//其他
{
args.Cancel = true;
WB(args.Uri.AbsoluteUri);
}
}
}
}
/// <summary>
/// Initializes a new instance of the <see cref="DevicePortalException"/> class.
/// </summary>
/// <param name="responseMessage">Http response message.</param>
/// <param name="message">Optional exception message.</param>
/// <param name="innerException">Optional inner exception.</param>
public DevicePortalException(
HttpResponseMessage responseMessage,
string message = "",
Exception innerException = null) : this(
responseMessage.StatusCode,
responseMessage.ReasonPhrase,
responseMessage.RequestMessage != null ? responseMessage.RequestMessage.RequestUri : null,
message,
innerException)
{
try
{
if (responseMessage.Content != null)
{
Stream dataStream = null;
#if !WINDOWS_UWP
using (HttpContent content = responseMessage.Content)
{
dataStream = new MemoryStream();
Task copyTask = content.CopyToAsync(dataStream);
copyTask.ConfigureAwait(false);
copyTask.Wait();
// Ensure we point the stream at the origin.
dataStream.Position = 0;
}
#else // WINDOWS_UWP
IBuffer dataBuffer = null;
using (IHttpContent messageContent = responseMessage.Content)
{
IAsyncOperationWithProgress <IBuffer, ulong> bufferOperation = messageContent.ReadAsBufferAsync();
while (bufferOperation.Status != AsyncStatus.Completed)
{
}
dataBuffer = bufferOperation.GetResults();
if (dataBuffer != null)
{
dataStream = dataBuffer.AsStream();
}
}
#endif // WINDOWS_UWP
if (dataStream != null)
{
DataContractJsonSerializer serializer = new DataContractJsonSerializer(typeof(HttpErrorResponse));
HttpErrorResponse errorResponse = (HttpErrorResponse)serializer.ReadObject(dataStream);
this.HResult = errorResponse.ErrorCode;
this.Reason = errorResponse.ErrorMessage;
// If we didn't get the Hresult and reason from these properties, try the other ones.
if (this.HResult == 0)
{
this.HResult = errorResponse.Code;
}
if (string.IsNullOrEmpty(this.Reason))
{
this.Reason = errorResponse.Reason;
}
}
}
}
catch (Exception)
{
// Do nothing if we fail to get additional error details from the response body.
}
}
/// <summary>
/// Asynchronously attempts to unlock the document file.
/// </summary>
/// <remarks>
/// Algorithm is as of this writing (11/5/2012):
/// 0. Use UTF8 encoding with no BOM.
/// 1. Read header.
/// 2. Compute SHA256 hash of header.
/// 3. Decrypt the rest of the viewModel using header parameters.
/// Relies on:
/// a. MasterSeed.Length == 32
/// Write masterseed to stream
/// b. GenerateKey32(_transformSeed, KeyEncryptionRounds)
/// Create raw32 (CreateRawCompositeKey32)
/// Concatenate all data and Sha256
/// TransformKey(raw32, _transformSeed, numRounds)
/// Init Rijndael:
/// 128 bit (16 byte) blocks
/// ECB mode
/// k = _transformSeed
/// For numRounds:
/// Transform in place raw32[0:15]
/// Transform in place raw32[16:31]
/// c. Write 32 bytes of Key32 to stream
/// d. aesKey = Sha256 the stream
/// e. DecryptStream with aesKey and _encryptionIV
/// 4. Verify the first 32 bytes of the decrypted viewModel match up with
/// "StreamStartBytes" from the header.
/// 5. Read from the decrypted viewModel as a "HashedBlockStream"
///
/// File format at the time of this writing (11/5/2012):
///
/// 4 bytes: SIG1
/// 4 bytes: SIG2
/// Failure to match these constants results in a parse Result.
///
/// 4 bytes: File version
///
/// Header fields:
/// 1 byte: Field ID
/// 2 bytes: Field size (n)
/// n bytes: Data
/// </remarks>
/// <param name="stream">An IRandomAccessStream containing the document to unlock (including the header).</param>
/// <param name="rawKey">The aggregate raw key to use for decrypting the database.</param>
/// <param name="token">A token allowing the parse to be cancelled.</param>
/// <returns>A Task representing the result of the descryiption operation.</returns>
public async Task <KdbxDecryptionResult> DecryptFile(IRandomAccessStream stream, IBuffer rawKey, CancellationToken token)
{
if (HeaderData == null)
{
throw new InvalidOperationException("Cannot decrypt database before ReadHeader has been called.");
}
// Init a SHA256 hash buffer and append the master seed to it
HashAlgorithmProvider sha256 = HashAlgorithmProvider.OpenAlgorithm(HashAlgorithmNames.Sha256);
CryptographicHash hash = sha256.CreateHash();
hash.Append(HeaderData.MasterSeed);
this.rawKey = rawKey;
this.logger.LogEvent("KdbxReader.GotRawKey", EventVerbosity.Verbose);
// Transform the key (this can take a while)
IBuffer transformedKey;
try
{
IKdfEngine kdf = HeaderData.KdfParameters.CreateEngine();
LoggingFields fields = new LoggingFields();
fields.AddString("KdfEngine", kdf.GetType().Name);
this.logger.LogEvent("KdbxReader.StartingKeyTransform", fields, EventVerbosity.Info);
transformedKey = await HeaderData.KdfParameters.CreateEngine().TransformKeyAsync(rawKey, token)
.ConfigureAwait(false);
if (transformedKey == null)
{
throw new OperationCanceledException();
}
this.logger.LogEvent("KdbxReader.KeyTransformSucceeded", EventVerbosity.Info);
}
catch (OperationCanceledException)
{
return(new KdbxDecryptionResult(new ReaderResult(KdbxParserCode.OperationCancelled)));
}
// In KDBX4, after the header is an HMAC-SHA-256 value computed over the header
// allowing validation of header integrity.
IBuffer hmacKey = HmacBlockHandler.DeriveHmacKey(transformedKey, HeaderData.MasterSeed);
HmacBlockHandler hmacHandler = new HmacBlockHandler(hmacKey);
IBuffer expectedMac = null;
if (this.parameters.UseInlineHeaderAuthentication)
{
var algorithm = MacAlgorithmProvider.OpenAlgorithm(MacAlgorithmNames.HmacSha256);
CryptographicHash hmacHash = algorithm.CreateHash(hmacHandler.GetKeyForBlock(UInt64.MaxValue));
DebugHelper.Assert(HeaderData.FullHeader != null);
hmacHash.Append(HeaderData.FullHeader);
expectedMac = hmacHash.GetValueAndReset();
}
// Hash transformed k (with the master seed) to get final cipher k
hash.Append(transformedKey);
IBuffer cipherKey = hash.GetValueAndReset();
this.logger.LogEvent("KdbxReader.GotFinalCipherKey", EventVerbosity.Info);
// Decrypt the document starting from the end of the header
ulong headerLength = HeaderData.FullHeader.Length;
if (this.parameters.UseInlineHeaderAuthentication)
{
// KDBX4 has a hash at the end of the header
headerLength += 32;
}
stream.Seek(headerLength);
if (expectedMac != null)
{
using (DataReader macReader = GetReaderForStream(stream))
{
await macReader.LoadAsync(expectedMac.Length);
IBuffer actualMac = macReader.ReadBuffer(expectedMac.Length);
for (uint i = 0; i < expectedMac.Length; i++)
{
if (expectedMac.GetByte(i) != actualMac.GetByte(i))
{
this.logger.LogEvent("KdbxReader.HmacFailure", EventVerbosity.Critical);
return(new KdbxDecryptionResult(new ReaderResult(KdbxParserCode.CouldNotDecrypt)));
}
}
macReader.DetachStream();
}
}
IBuffer cipherText;
try
{
cipherText = await GetCipherText(stream, hmacHandler);
}
catch (FormatException ex)
{
this.logger.LogEvent("KdbxReader.DataIntegrityFailure", ex.ToLoggingFields(), EventVerbosity.Critical);
return(new KdbxDecryptionResult(new ReaderResult(KdbxParserCode.DataIntegrityProblem, ex)));
}
IBuffer decryptedFile = DecryptDatabaseData(cipherText, cipherKey);
if (decryptedFile == null)
{
this.logger.LogEvent("KdbxReader.DecryptionFailure", EventVerbosity.Critical);
return(new KdbxDecryptionResult(new ReaderResult(KdbxParserCode.CouldNotDecrypt)));
}
this.logger.LogEvent("KdbxReader.DecryptionSucceeded", EventVerbosity.Info);
// Verify first 32 bytes of the clear data; if StreamStartBytes wasn't set
// (e.g. due to KDBX4), nothing happens here.
for (uint i = 0; i < (HeaderData.StreamStartBytes?.Length ?? 0); i++)
{
byte actualByte = decryptedFile.GetByte(i);
byte expectedByte = HeaderData.StreamStartBytes.GetByte(i);
if (actualByte != expectedByte)
{
this.logger.LogEvent("KdbxReader.PlaintextValidationFailure", EventVerbosity.Critical);
return(new KdbxDecryptionResult(new ReaderResult(KdbxParserCode.FirstBytesMismatch)));
}
}
this.logger.LogEvent("KdbxReader.PlaintextValidationSucceeded", EventVerbosity.Verbose);
IBuffer plainText = await UnhashAndInflate(decryptedFile);
if (plainText == null)
{
return(new KdbxDecryptionResult(new ReaderResult(KdbxParserCode.CouldNotInflate)));
}
// Update HeaderData with info from the inner header, if relevant
if (this.parameters.UseInnerHeader)
{
using (IRandomAccessStream plainTextStream = plainText.AsStream().AsRandomAccessStream())
{
using (DataReader reader = GetReaderForStream(plainTextStream))
{
ReaderResult innerHeaderResult = await ReadInnerHeader(reader, HeaderData);
if (innerHeaderResult != ReaderResult.Success)
{
LoggingFields fields = new LoggingFields();
fields.AddInt32("Code", (int)innerHeaderResult.Code);
this.logger.LogEvent("KdbxReader.InnerHeaderReadFailure", fields, EventVerbosity.Critical);
return(new KdbxDecryptionResult(innerHeaderResult));
}
// Update plainText to point to the remainder of the buffer
uint bytesRemaining = plainText.Length - (uint)plainTextStream.Position;
await reader.LoadAsync(bytesRemaining);
plainText = reader.ReadBuffer(bytesRemaining);
}
}
}
XDocument finalTree = null;
try
{
finalTree = XDocument.Load(plainText.AsStream());
}
catch (XmlException)
{
return(null);
}
if (finalTree == null)
{
return(new KdbxDecryptionResult(new ReaderResult(KdbxParserCode.MalformedXml)));
}
try
{
KdbxDocument parsedDocument = await Task.Run(() => new KdbxDocument(finalTree.Root, HeaderData.ProtectedBinaries, HeaderData.GenerateRng(), this.parameters));
// Validate the final parsed header hash before returning
if (this.parameters.UseXmlHeaderAuthentication &&
!String.IsNullOrEmpty(parsedDocument.Metadata.HeaderHash) &&
parsedDocument.Metadata.HeaderHash != HeaderData.HeaderHash)
{
return(new KdbxDecryptionResult(new ReaderResult(KdbxParserCode.BadHeaderHash)));
}
return(new KdbxDecryptionResult(this.parameters, parsedDocument, this.rawKey));
}
catch (KdbxParseException e)
{
return(new KdbxDecryptionResult(e.Error));
}
}
/// <summary>
/// Used to service the given request. Once the image has been responded to the
/// function will continue with requests until the queue is empty
/// </summary>
/// <param name="startingRequestedContext">The request to start with</param>
/// <returns></returns>
private async Task ServiceRequest(ImageManagerRequestInternal startingRequestedContext)
{
ImageManagerRequestInternal currentRequest = startingRequestedContext;
while (currentRequest != null)
{
// Service the request in a try catch
try
{
string fileName = MakeFileNameFromUrl(currentRequest.Context.Url);
// If not we have to get the image
IBuffer imgBuffer = await m_baconMan.NetworkMan.MakeRawGetRequest(currentRequest.Context.Url);
// Turn the stream into an image
InMemoryRandomAccessStream imageStream = new InMemoryRandomAccessStream();
Stream readStream = imgBuffer.AsStream();
Stream writeStream = imageStream.AsStreamForWrite();
// Copy the buffer
// #todo perf - THERE HAS TO BE A BTTER WAY TO DO THIS.
readStream.CopyTo(writeStream);
writeStream.Flush();
// Seek to the start.
imageStream.Seek(0);
// Create a response
ImageManagerResponseEventArgs response = new ImageManagerResponseEventArgs()
{
ImageStream = imageStream,
Request = currentRequest.Context,
Success = true
};
// Fire the callback
currentRequest.Context.m_onRequestComplete.Raise(currentRequest.Context, response);
}
catch (Exception e)
{
// Report the error
m_baconMan.MessageMan.DebugDia("Error getting image", e);
// Create a response
ImageManagerResponseEventArgs response = new ImageManagerResponseEventArgs()
{
Request = currentRequest.Context,
Success = false
};
// Send the response
currentRequest.Context.m_onRequestComplete.Raise(currentRequest.Context, response);
}
// Once we are done, check to see if there is another we should service.
lock (m_requestList)
{
// Remove the current request.
m_requestList.Remove(currentRequest);
// Kill the current request
currentRequest = null;
// Check if there is another request we should service now.
for (int i = 0; i < MAX_RUNNING_IMAGE_REQUESTS; i++)
{
if (m_requestList.Count > i && !m_requestList[i].isServicing)
{
currentRequest = m_requestList[i];
currentRequest.isServicing = true;
break;
}
}
}
}
}
private Stream BufferToStream(IBuffer buffer)
{
return(buffer.AsStream());
}
private async void AttemptSaveAsync()
{
if (!Processing)
{
Processing = true;
AdaptButtonsToState();
GC.Collect();
var lowMemory = false;
try
{
long result = (long)DeviceExtendedProperties.GetValue("ApplicationWorkingSetLimit");
lowMemory = result / 1024 / 1024 < 300;
}
catch (ArgumentOutOfRangeException)
{
}
IBuffer buffer = null;
Model.OriginalImage.Position = 0;
using (var source = new StreamImageSource(Model.OriginalImage))
using (var segmenter = new InteractiveForegroundSegmenter(source))
using (var annotationsSource = new BitmapImageSource(Model.AnnotationsBitmap))
{
segmenter.Quality = lowMemory ? 0.5 : 1;
segmenter.AnnotationsSource = annotationsSource;
var foregroundColor = Model.ForegroundBrush.Color;
var backgroundColor = Model.BackgroundBrush.Color;
segmenter.ForegroundColor = Windows.UI.Color.FromArgb(foregroundColor.A, foregroundColor.R, foregroundColor.G, foregroundColor.B);
segmenter.BackgroundColor = Windows.UI.Color.FromArgb(backgroundColor.A, backgroundColor.R, backgroundColor.G, backgroundColor.B);
using (var effect = new LensBlurEffect(source, new LensBlurPredefinedKernel(Model.KernelShape, (uint)Model.KernelSize)))
using (var renderer = new JpegRenderer(effect))
{
effect.KernelMap = segmenter;
try
{
buffer = await renderer.RenderAsync();
}
catch (Exception ex)
{
System.Diagnostics.Debug.WriteLine("AttemptSave rendering failed: " + ex.Message);
}
}
}
if (buffer != null)
{
using (var library = new MediaLibrary())
using (var stream = buffer.AsStream())
{
library.SavePicture("lensblur_" + DateTime.Now.Ticks, stream);
Model.Saved = true;
AdaptButtonsToState();
}
}
Processing = false;
AdaptButtonsToState();
}
}
private async void btnFinalizar_Click(object sender, Windows.UI.Xaml.RoutedEventArgs e)
{
try
{
Type tipoPage = FragmentFrame.SourcePageType;
StorageFolder localFolder = await Utils.BaseFolder.CreateFolderAsync(tipoPage.Name.Replace("Page", string.Empty), CreationCollisionOption.OpenIfExists);
StorageFolder destinationFolder = await localFolder.CreateFolderAsync(Guid.NewGuid().ToString(), CreationCollisionOption.GenerateUniqueName);
StorageFolder pdfFolder = await localFolder.CreateFolderAsync("Digitalizados", CreationCollisionOption.OpenIfExists);
// Encabezado
StorageFile file = await destinationFolder.CreateFileAsync("Metadata.dat", CreationCollisionOption.FailIfExists);
await FileIO.WriteTextAsync(file, model.StringifyEtiquetas + Environment.NewLine);
IEnumerable <string> query = from a in model.FileList
select a.Name;
await FileIO.AppendLinesAsync(file, query);
List <Stream> Fotos = new List <Stream>();
List <IBuffer> lst = new List <IBuffer>();
// Detalle
foreach (FileItem fila in model.FileList)
{
StorageFile filepage = await model.DestinationFolder.GetFileAsync(fila.Name);
IBuffer buf = await FileIO.ReadBufferAsync(filepage);
lst.Add(buf);
Fotos.Add(buf.AsStream());
await filepage.MoveAsync(destinationFolder);
}
////////////////////
// 24-Oct-2016, Roberto Castro, Proceso que guarda el archivo en la maquina local
Windows.Storage.ApplicationDataContainer localSettings = Windows.Storage.ApplicationData.Current.LocalSettings;
bool value = Convert.ToBoolean(localSettings.Values["SaveLocalFile"]);
if (value == true)
{
Models.Archivos.Archivos_PostBindingModel model2 = new Models.Archivos.Archivos_PostBindingModel();
model2.Aplicacion = model.Aplicacion;
model2.Categoria = model.Categoria;
model2.Etiquetas = model.Etiquetas;
IEnumerable <IBuffer> archivos = lst;
IBuffer archivo = await ArchivosModel.PostArchivoPdf(model2, archivos);
byte[] st = archivo.ToArray();
var queryTags = from a in model2.Etiquetas
select a.Valor;
string NombreArchivo = string.Join("-", queryTags) + ".pdf";
try
{
await obtenerArchivoGuardado(st, pdfFolder.Path + @"\" + NombreArchivo);
}
catch { }
}
////////////////////
// 08-Feb-2017, Roberto Castro, Si se cargaron imagen anteriormente digitalizadas, se borra la carpeta
if (cboCargar.SelectedItem != null)
{
TransferirModel c = cboCargar.SelectedItem as TransferirModel;
StorageFolder folder = await localFolder.GetFolderAsync(c.Nombre);
await folder.DeleteAsync();
}
////////////////////
LimpiarVista();
rootPage.NotifyUser("El documento fue guardado exitosamente. Puede continuar.", NotifyType.StatusMessage);
}
catch (Exception ex)
{
rootPage.NotifyUser(ex.Message, NotifyType.ErrorMessage);
}
}
private async void btnCombinar_Click(object sender, Windows.UI.Xaml.RoutedEventArgs e)
{
if (model.Etiquetas.Count() > 0)
{
try
{
model.ScenarioRunning = true;
Models.Etiquetas.Etiquetas_GetArchivosBindingModel mdl = new Models.Etiquetas.Etiquetas_GetArchivosBindingModel();
mdl.Aplicacion = model.Aplicacion;
mdl.Categoria = model.Categoria;
mdl.Etiquetas = model.Etiquetas;
long IDArchivo = await Models.EtiquetasModel.Get(mdl);
Models.Archivos.Archivos_GetBindingModel model2 = new Models.Archivos.Archivos_GetBindingModel();
model2.ID = IDArchivo;
IBuffer buffer = await Models.ArchivosModel.Get(model2);
Windows.Data.Pdf.PdfDocument pdf = await Windows.Data.Pdf.PdfDocument.LoadFromStreamAsync(buffer.AsStream().AsRandomAccessStream());
for (uint i = 0; i < pdf.PageCount; i++)
{
Windows.Data.Pdf.PdfPage page = pdf.GetPage(i);
StorageFile bmpFile = await model.DestinationFolder.CreateFileAsync(string.Format("Pagina {0}.bmp", i + 1), CreationCollisionOption.GenerateUniqueName);
IRandomAccessStream stream = await bmpFile.OpenAsync(FileAccessMode.ReadWrite);
await page.RenderToStreamAsync(stream);
await stream.FlushAsync();
stream.Dispose();
page.Dispose();
Utils.SetImageSourceFromFile(bmpFile, DisplayImage);
rootPage.NotifyUser("Apertura en progreso...", NotifyType.StatusMessage);
Utils.UpdateFileData(bmpFile, model);
ScanerListView.SelectedItem = model.FileList.Last();
}
rootPage.NotifyUser(String.Empty, NotifyType.StatusMessage);
}
catch (Exception)
{
// No pasa nada
}
finally
{
model.ScenarioRunning = false;
}
}
else
{
rootPage.NotifyUser("Debe ingresar primero los datos", NotifyType.ErrorMessage);
}
}
/// <inheritdoc />
public override void ForwardProcessDataStream(System.IO.Stream inStream, System.IO.Stream outStream, Dictionary <string, string> options, out long writtenBytes)
{
if (options == null)
{
throw new ArgumentNullException("options");
}
else if (!options.ContainsKey(PasswordOption))
{
throw new ArgumentException("Options must contain encryption key", "options");
}
if (outStream == null)
{
throw new ArgumentNullException("outStream");
}
#if NETFX_CORE
inStream.Seek(0, 0);
outStream.Seek(0, 0);
IBuffer pwBuffer = CryptographicBuffer.ConvertStringToBinary(options[PasswordOption], BinaryStringEncoding.Utf8);
IBuffer saltBuffer = CryptographicBuffer.CreateFromByteArray(SALT);
// Derive key material for password size 32 bytes for AES256 algorithm
KeyDerivationAlgorithmProvider keyDerivationProvider = Windows.Security.Cryptography.Core.KeyDerivationAlgorithmProvider.OpenAlgorithm("PBKDF2_SHA1");
// using salt and 1000 iterations
KeyDerivationParameters pbkdf2Parms = KeyDerivationParameters.BuildForPbkdf2(saltBuffer, 1000);
// create a key based on original key and derivation parmaters
CryptographicKey keyOriginal = keyDerivationProvider.CreateKey(pwBuffer);
IBuffer keyMaterial = CryptographicEngine.DeriveKeyMaterial(keyOriginal, pbkdf2Parms, 32);
CryptographicKey derivedPwKey = keyDerivationProvider.CreateKey(pwBuffer);
// derive buffer to be used for encryption salt from derived password key
IBuffer saltMaterial = CryptographicEngine.DeriveKeyMaterial(derivedPwKey, pbkdf2Parms, 16);
// display the buffers - because KeyDerivationProvider always gets cleared after each use, they are very similar unforunately
string keyMaterialString = CryptographicBuffer.EncodeToBase64String(keyMaterial);
string saltMaterialString = CryptographicBuffer.EncodeToBase64String(saltMaterial);
SymmetricKeyAlgorithmProvider symProvider = SymmetricKeyAlgorithmProvider.OpenAlgorithm("AES_CBC_PKCS7");
// create symmetric key from derived password key
CryptographicKey symmKey = symProvider.CreateSymmetricKey(keyMaterial);
using (MemoryStream ms = new MemoryStream())
{
inStream.CopyTo(ms);
// encrypt data buffer using symmetric key and derived salt material
IBuffer resultBuffer = CryptographicEngine.Encrypt(symmKey, WindowsRuntimeBufferExtensions.GetWindowsRuntimeBuffer(ms), saltMaterial);
resultBuffer.AsStream().CopyTo(outStream);
writtenBytes = outStream.Position;
}
#else
Rfc2898DeriveBytes pdb = new Rfc2898DeriveBytes(options[PasswordOption], SALT);
var key = pdb.GetBytes(32);
pdb.Reset();
var iv = pdb.GetBytes(16);
using (var transform = encrypter.CreateEncryptor(key, iv))
{
using (MemoryStream internalStream = new MemoryStream())
{
using (CryptoStream csEncrypt = new CryptoStream(internalStream, transform, CryptoStreamMode.Write))
{
StreamTools.Write(inStream, csEncrypt);
inStream.Flush();
csEncrypt.FlushFinalBlock();
internalStream.Seek(0, 0);
StreamTools.Write(internalStream, outStream);
writtenBytes = outStream.Position;
}
}
}
#endif
}
private async Task DownloadToCacheFileAsync(Uri uri, string fileName, CancellationToken cancellationToken)
{
Exception obj = null;
int num = 0;
try
{
HttpClient httpClient = new HttpClient();
try
{
IBuffer source = await httpClient.GetBufferAsync(uri).AsTask(cancellationToken, new Progress <HttpProgress>(delegate(HttpProgress progress)
{
ulong?totalBytesToReceive = progress.TotalBytesToReceive;
if (totalBytesToReceive.HasValue)
{
double percentage = Math.Round(progress.BytesReceived * 100.0 / totalBytesToReceive.Value, 2);
EventHandler <DownloadProgressChangedArgs> expr_3E = this.DownloadProgressChanged;
if (expr_3E == null)
{
return;
}
expr_3E.Invoke(this, new DownloadProgressChangedArgs(uri, percentage));
}
}));
Stream stream = source.AsStream();
try
{
Stream stream2 = await UriLoader.CreateTempFileStreamAsync(fileName);
try
{
await stream.CopyToAsync(stream2);
}
finally
{
if (stream2 != null)
{
stream2.Dispose();
}
}
stream2 = null;
}
finally
{
if (stream != null)
{
stream.Dispose();
}
}
stream = null;
}
finally
{
if (httpClient != null)
{
httpClient.Dispose();
}
}
httpClient = null;
}
catch (Exception obj_0)
{
num = 1;
obj = obj_0;
}
if (num == 1)
{
await UriLoader.DeleteTempFileAsync(fileName);
Exception expr_2FC = obj as Exception;
if (expr_2FC == null)
{
throw obj;
}
ExceptionDispatchInfo.Capture(expr_2FC).Throw();
}
obj = null;
}
public static async Task <ExportResult> ExportSvgAsync(
ExportStyle style,
InstalledFont selectedFont,
FontVariant selectedVariant,
Character selectedChar,
CanvasTextLayoutAnalysis analysis,
CanvasTypography typography)
{
try
{
string name = GetFileName(selectedFont, selectedVariant, selectedChar, "svg");
if (await PickFileAsync(name, "SVG", new[] { ".svg" }) is StorageFile file)
{
CachedFileManager.DeferUpdates(file);
CanvasDevice device = Utils.CanvasDevice;
Color textColor = style == ExportStyle.Black ? Colors.Black : Colors.White;
// If COLR format (e.g. Segoe UI Emoji), we have special export path.
if (style == ExportStyle.ColorGlyph && analysis.HasColorGlyphs && !analysis.GlyphFormats.Contains(GlyphImageFormat.Svg))
{
Interop interop = SimpleIoc.Default.GetInstance <Interop>();
List <string> paths = new List <string>();
Rect bounds = Rect.Empty;
foreach (var thing in analysis.Indicies)
{
var path = interop.GetPathDatas(selectedVariant.FontFace, thing.ToArray()).First();
paths.Add(path.Path);
if (!path.Bounds.IsEmpty)
{
var left = Math.Min(bounds.Left, path.Bounds.Left);
var top = Math.Min(bounds.Top, path.Bounds.Top);
var right = Math.Max(bounds.Right, path.Bounds.Right);
var bottom = Math.Max(bounds.Bottom, path.Bounds.Bottom);
bounds = new Rect(
left,
top,
right - left,
bottom - top);
}
}
using (CanvasSvgDocument document = Utils.GenerateSvgDocument(device, bounds, paths, analysis.Colors, invertBounds: false))
{
await Utils.WriteSvgAsync(document, file);
}
return(new ExportResult(true, file));
}
var data = GetGeometry(1024, selectedVariant, selectedChar, analysis, typography);
async Task SaveMonochromeAsync()
{
using CanvasSvgDocument document = Utils.GenerateSvgDocument(device, data.Bounds, data.Path, textColor);
await Utils.WriteSvgAsync(document, file);
}
// If the font uses SVG glyphs, we can extract the raw SVG from the font file
if (analysis.GlyphFormats.Contains(GlyphImageFormat.Svg))
{
string str = null;
IBuffer b = GetGlyphBuffer(selectedVariant.FontFace, selectedChar.UnicodeIndex, GlyphImageFormat.Svg);
if (b.Length > 2 && b.GetByte(0) == 31 && b.GetByte(1) == 139)
{
using var stream = b.AsStream();
using var gzip = new GZipStream(stream, CompressionMode.Decompress);
using var reader = new StreamReader(gzip);
str = reader.ReadToEnd();
}
else
{
using var dataReader = DataReader.FromBuffer(b);
dataReader.UnicodeEncoding = Windows.Storage.Streams.UnicodeEncoding.Utf8;
str = dataReader.ReadString(b.Length);
}
if (str.StartsWith("<?xml"))
{
str = str.Remove(0, str.IndexOf(">") + 1);
}
str = str.TrimStart();
try
{
using (CanvasSvgDocument document = CanvasSvgDocument.LoadFromXml(Utils.CanvasDevice, str))
{
// We need to transform the SVG to fit within the default document bounds, as characters
// are based *above* the base origin of (0,0) as (0,0) is the Baseline (bottom left) position for a character,
// so by default a will appear out of bounds of the default SVG viewport (towards top left).
//if (!document.Root.IsAttributeSpecified("viewBox")) // Specified viewbox requires baseline transform?
{
// We'll regroup all the elements inside a "g" / group tag,
// and apply a transform to the "g" tag to try and put in
// in the correct place. There's probably a more accurate way
// to do this by directly setting the root viewBox, if anyone
// can find the correct calculation...
List <ICanvasSvgElement> elements = new List <ICanvasSvgElement>();
double minTop = 0;
double minLeft = double.MaxValue;
double maxWidth = double.MinValue;
double maxHeight = double.MinValue;
void ProcessChildren(CanvasSvgNamedElement root)
{
CanvasSvgNamedElement ele = root.FirstChild as CanvasSvgNamedElement;
while (true)
{
CanvasSvgNamedElement next = root.GetNextSibling(ele) as CanvasSvgNamedElement;
if (ele.Tag == "g")
{
ProcessChildren(ele);
}
else if (ele.Tag == "path")
{
// Create a XAML geometry to try and find the bounds of each character
// Probably more efficient to do in Win2D, but far less code to do with XAML.
Geometry gm = XamlBindingHelper.ConvertValue(typeof(Geometry), ele.GetStringAttribute("d")) as Geometry;
minTop = Math.Min(minTop, gm.Bounds.Top);
minLeft = Math.Min(minLeft, gm.Bounds.Left);
maxWidth = Math.Max(maxWidth, gm.Bounds.Width);
maxHeight = Math.Max(maxHeight, gm.Bounds.Height);
}
ele = next;
if (ele == null)
{
break;
}
}
}
ProcessChildren(document.Root);
double top = minTop < 0 ? minTop : 0;
double left = minLeft;
document.Root.SetRectangleAttribute("viewBox", new Rect(left, top, data.Bounds.Width, data.Bounds.Height));
}
await Utils.WriteSvgAsync(document, file);
}
}
catch
{
// Certain fonts seem to have their SVG glyphs encoded with... I don't even know what encoding.
// for example: https://github.com/adobe-fonts/emojione-color
// In these cases, fallback to monochrome black
await SaveMonochromeAsync();
}
}
else
{
await SaveMonochromeAsync();
}
await CachedFileManager.CompleteUpdatesAsync(file);
return(new ExportResult(true, file));
}
}
catch (Exception ex)
{
await SimpleIoc.Default.GetInstance <IDialogService>()
.ShowMessageBox(ex.Message, Localization.Get("SaveImageError"));
}
return(new ExportResult(false, null));
}
