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start adding support for reading encrypted documents

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Eliot Jones
2019-05-04 15:36:13 +01:00
parent b2a3ae7a49
commit be394f5bba
21 changed files with 534 additions and 66 deletions
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15
src/UglyToad.PdfPig/Fonts/Parser/Parts/CidFontFactory.cs
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@@ -4,6 +4,7 @@
using System.Collections.Generic;
using CidFonts;
using CompactFontFormat;
using Encryption;
using Exceptions;
using Filters;
using Geometry;
@@ -22,17 +23,21 @@
private readonly TrueTypeFontParser trueTypeFontParser;
private readonly CompactFontFormatParser compactFontFormatParser;
private readonly IFilterProvider filterProvider;
private readonly IEncryptionHandler encryptionHandler;
private readonly IPdfTokenScanner pdfScanner;
public CidFontFactory(IPdfTokenScanner pdfScanner, FontDescriptorFactory descriptorFactory, TrueTypeFontParser trueTypeFontParser,
public CidFontFactory(IPdfTokenScanner pdfScanner, FontDescriptorFactory descriptorFactory,
TrueTypeFontParser trueTypeFontParser,
CompactFontFormatParser compactFontFormatParser,
IFilterProvider filterProvider)
IFilterProvider filterProvider,
IEncryptionHandler encryptionHandler)
{
this.pdfScanner = pdfScanner;
this.descriptorFactory = descriptorFactory;
this.trueTypeFontParser = trueTypeFontParser;
this.compactFontFormatParser = compactFontFormatParser;
this.filterProvider = filterProvider;
this.encryptionHandler = encryptionHandler;
}
public ICidFont Generate(DictionaryToken dictionary, bool isLenientParsing)
@@ -104,7 +109,7 @@
return null;
}
var fontFile = fontFileStream.Decode(filterProvider);
var fontFile = fontFileStream.Decode(filterProvider, encryptionHandler);
switch (descriptor.FontFile.FileType)
{
@@ -125,7 +130,7 @@
if (subtypeName == NameToken.CidFontType0C)
{
var bytes = str.Decode(filterProvider);
var bytes = str.Decode(filterProvider, encryptionHandler);
var font = compactFontFormatParser.Parse(new CompactFontFormatData(bytes));
return font;
}
@@ -297,7 +302,7 @@
var stream = DirectObjectFinder.Get<StreamToken>(entry, pdfScanner);
var bytes = stream.Decode(filterProvider);
var bytes = stream.Decode(filterProvider, encryptionHandler);
return new CharacterIdentifierToGlyphIndexMap(bytes);
}