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Support p7m signed PDFs #849

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r-Larch opened this issue Jun 15, 2024 · 0 comments
Open

Support p7m signed PDFs #849

r-Larch opened this issue Jun 15, 2024 · 0 comments
Labels
document-reading Related to reading documents enhancement

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@r-Larch
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r-Larch commented Jun 15, 2024

Hi,

my customer has a lot of signed PDFs. These PDFs are signed with Pkcs#7 and have the extension file.pdf.p7m.
PdfPig can load some of these files, but not all.

To support all of them I use the following code:

// if file is p7m:
await using var fs = File.OpenRead(file);
var signedFile = new Org.BouncyCastle.Cms.CmsSignedData(fs);
using var ms = new MemoryStream();
signedFile.SignedContent.Write(ms);
ms.Position = 0;
var doc = PdfDocument.Open(ms);

Maybe it could be implemented in the lib as many other PDF libs seem to load these files without problems.

**Some Errors `PdfPig` Shows** 
PdfP7M:  @"\pdf_p7m\Allegato 5 - Criteri valutazione tecnica.pdf.p7m"
 - System.NullReferenceException: Object reference not set to an instance of an object.
   at UglyToad.PdfPig.PdfExtensions.TryGet[T](DictionaryToken dictionary, NameToken name, IPdfTokenScanner tokenScanner, T& token)
   at UglyToad.PdfPig.Content.PagesFactory.CheckIfIsPage(DictionaryToken nodeDictionary, IndirectReference parentReference, Boolean isRoot, IPdfTokenScanner pdfTokenScanner, Boolean isLenientParsing)
   at UglyToad.PdfPig.Content.PagesFactory.ProcessPagesNode(IndirectReference referenceInput, DictionaryToken nodeDictionaryInput, IndirectReference parentReferenceInput, Boolean isRoot, IPdfTokenScanner pdfTokenScanner, Boolean isLenientParsing, PageCounter pageNumber)
   at UglyToad.PdfPig.Content.PagesFactory.Create(IndirectReference pagesReference, DictionaryToken pagesDictionary, IPdfTokenScanner scanner, IPageFactory pageFactory, ILog log, Boolean isLenientParsing)
   at UglyToad.PdfPig.Parser.CatalogFactory.Create(IndirectReference rootReference, DictionaryToken dictionary, IPdfTokenScanner scanner, PageFactory pageFactory, ILog log, Boolean isLenientParsing)
   at UglyToad.PdfPig.Parser.PdfDocumentFactory.OpenDocument(IInputBytes inputBytes, ISeekableTokenScanner scanner, InternalParsingOptions parsingOptions)
   at UglyToad.PdfPig.Parser.PdfDocumentFactory.Open(IInputBytes inputBytes, ParsingOptions options)
   at UglyToad.PdfPig.Parser.PdfDocumentFactory.Open(Stream stream, ParsingOptions options)
   at UglyToad.PdfPig.PdfDocument.Open(Stream stream, ParsingOptions options)
   at JurisMatic.Files.Tests.FileDetectorTests.Find_bad_pdf() in C:\Projects\LarchSys\JurisMatic\Libraries\JurisMatic.Files.Tests\FileDetectorTests.cs:line 209
PdfP7M:  @"\pdf_p7m\AMSA. Appalto integrato - Disciplinare di gara 29.06.2022.pdf.p7m"
 - System.NullReferenceException: Object reference not set to an instance of an object.
   at UglyToad.PdfPig.PdfExtensions.TryGet[T](DictionaryToken dictionary, NameToken name, IPdfTokenScanner tokenScanner, T& token)
   at UglyToad.PdfPig.Content.PagesFactory.CheckIfIsPage(DictionaryToken nodeDictionary, IndirectReference parentReference, Boolean isRoot, IPdfTokenScanner pdfTokenScanner, Boolean isLenientParsing)
   at UglyToad.PdfPig.Content.PagesFactory.ProcessPagesNode(IndirectReference referenceInput, DictionaryToken nodeDictionaryInput, IndirectReference parentReferenceInput, Boolean isRoot, IPdfTokenScanner pdfTokenScanner, Boolean isLenientParsing, PageCounter pageNumber)
   at UglyToad.PdfPig.Content.PagesFactory.Create(IndirectReference pagesReference, DictionaryToken pagesDictionary, IPdfTokenScanner scanner, IPageFactory pageFactory, ILog log, Boolean isLenientParsing)
   at UglyToad.PdfPig.Parser.CatalogFactory.Create(IndirectReference rootReference, DictionaryToken dictionary, IPdfTokenScanner scanner, PageFactory pageFactory, ILog log, Boolean isLenientParsing)
   at UglyToad.PdfPig.Parser.PdfDocumentFactory.OpenDocument(IInputBytes inputBytes, ISeekableTokenScanner scanner, InternalParsingOptions parsingOptions)
   at UglyToad.PdfPig.Parser.PdfDocumentFactory.Open(IInputBytes inputBytes, ParsingOptions options)
   at UglyToad.PdfPig.Parser.PdfDocumentFactory.Open(Stream stream, ParsingOptions options)
   at UglyToad.PdfPig.PdfDocument.Open(Stream stream, ParsingOptions options)
   at JurisMatic.Files.Tests.FileDetectorTests.Find_bad_pdf() in C:\Projects\LarchSys\JurisMatic\Libraries\JurisMatic.Files.Tests\FileDetectorTests.cs:line 209
PdfP7M:  @"\pdf_p7m\AMSA. Appalto integrato - lettera-di-invito.pdf.p7m"
 - System.NullReferenceException: Object reference not set to an instance of an object.
   at UglyToad.PdfPig.PdfExtensions.TryGet[T](DictionaryToken dictionary, NameToken name, IPdfTokenScanner tokenScanner, T& token)
   at UglyToad.PdfPig.Content.PagesFactory.CheckIfIsPage(DictionaryToken nodeDictionary, IndirectReference parentReference, Boolean isRoot, IPdfTokenScanner pdfTokenScanner, Boolean isLenientParsing)
   at UglyToad.PdfPig.Content.PagesFactory.ProcessPagesNode(IndirectReference referenceInput, DictionaryToken nodeDictionaryInput, IndirectReference parentReferenceInput, Boolean isRoot, IPdfTokenScanner pdfTokenScanner, Boolean isLenientParsing, PageCounter pageNumber)
   at UglyToad.PdfPig.Content.PagesFactory.Create(IndirectReference pagesReference, DictionaryToken pagesDictionary, IPdfTokenScanner scanner, IPageFactory pageFactory, ILog log, Boolean isLenientParsing)
   at UglyToad.PdfPig.Parser.CatalogFactory.Create(IndirectReference rootReference, DictionaryToken dictionary, IPdfTokenScanner scanner, PageFactory pageFactory, ILog log, Boolean isLenientParsing)
   at UglyToad.PdfPig.Parser.PdfDocumentFactory.OpenDocument(IInputBytes inputBytes, ISeekableTokenScanner scanner, InternalParsingOptions parsingOptions)
   at UglyToad.PdfPig.Parser.PdfDocumentFactory.Open(IInputBytes inputBytes, ParsingOptions options)
   at UglyToad.PdfPig.Parser.PdfDocumentFactory.Open(Stream stream, ParsingOptions options)
   at UglyToad.PdfPig.PdfDocument.Open(Stream stream, ParsingOptions options)
   at JurisMatic.Files.Tests.FileDetectorTests.Find_bad_pdf() in C:\Projects\LarchSys\JurisMatic\Libraries\JurisMatic.Files.Tests\FileDetectorTests.cs:line 209
PdfP7M:  @"\pdf_p7m\AMSA. Appalto integrato. Capitolato speciale lavori.pdf.p7m"
 - UglyToad.PdfPig.Core.PdfDocumentFormatException: The type of the catalog dictionary was not Catalog: <Type, /Cat\x04�\x03�alog>, <Pages, 382 0>, <PageMode, /UseNone>, <OutputIntents, [ 504 0 ]>, <Outlines, 207 0>, <Lang, (en-US)>, <Metadata, 105 0>.
   at UglyToad.PdfPig.Parser.CatalogFactory.Create(IndirectReference rootReference, DictionaryToken dictionary, IPdfTokenScanner scanner, PageFactory pageFactory, ILog log, Boolean isLenientParsing)
   at UglyToad.PdfPig.Parser.PdfDocumentFactory.OpenDocument(IInputBytes inputBytes, ISeekableTokenScanner scanner, InternalParsingOptions parsingOptions)
   at UglyToad.PdfPig.Parser.PdfDocumentFactory.Open(IInputBytes inputBytes, ParsingOptions options)
   at UglyToad.PdfPig.Parser.PdfDocumentFactory.Open(Stream stream, ParsingOptions options)
   at UglyToad.PdfPig.PdfDocument.Open(Stream stream, ParsingOptions options)
   at JurisMatic.Files.Tests.FileDetectorTests.Find_bad_pdf() in C:\Projects\LarchSys\JurisMatic\Libraries\JurisMatic.Files.Tests\FileDetectorTests.cs:line 209
PdfP7M:  @"\pdf_p7m\AMSA. Appalto integrato. Capitolato speciale prog. esecutivo.pdf.p7m"
 - System.NullReferenceException: Object reference not set to an instance of an object.
   at UglyToad.PdfPig.PdfExtensions.TryGet[T](DictionaryToken dictionary, NameToken name, IPdfTokenScanner tokenScanner, T& token)
   at UglyToad.PdfPig.Content.PagesFactory.CheckIfIsPage(DictionaryToken nodeDictionary, IndirectReference parentReference, Boolean isRoot, IPdfTokenScanner pdfTokenScanner, Boolean isLenientParsing)
   at UglyToad.PdfPig.Content.PagesFactory.ProcessPagesNode(IndirectReference referenceInput, DictionaryToken nodeDictionaryInput, IndirectReference parentReferenceInput, Boolean isRoot, IPdfTokenScanner pdfTokenScanner, Boolean isLenientParsing, PageCounter pageNumber)
   at UglyToad.PdfPig.Content.PagesFactory.Create(IndirectReference pagesReference, DictionaryToken pagesDictionary, IPdfTokenScanner scanner, IPageFactory pageFactory, ILog log, Boolean isLenientParsing)
   at UglyToad.PdfPig.Parser.CatalogFactory.Create(IndirectReference rootReference, DictionaryToken dictionary, IPdfTokenScanner scanner, PageFactory pageFactory, ILog log, Boolean isLenientParsing)
   at UglyToad.PdfPig.Parser.PdfDocumentFactory.OpenDocument(IInputBytes inputBytes, ISeekableTokenScanner scanner, InternalParsingOptions parsingOptions)
   at UglyToad.PdfPig.Parser.PdfDocumentFactory.Open(IInputBytes inputBytes, ParsingOptions options)
   at UglyToad.PdfPig.Parser.PdfDocumentFactory.Open(Stream stream, ParsingOptions options)
   at UglyToad.PdfPig.PdfDocument.Open(Stream stream, ParsingOptions options)
   at JurisMatic.Files.Tests.FileDetectorTests.Find_bad_pdf() in C:\Projects\LarchSys\JurisMatic\Libraries\JurisMatic.Files.Tests\FileDetectorTests.cs:line 209
PdfP7M:  @"\pdf_p7m\PD.D.A.GEN.1040 - RELAZIONE TECNICA IMPIANTI.pdf.p7m"
 - UglyToad.PdfPig.Core.PdfDocumentFormatException: The dictionary did not contain a number with the key /Size. Dictionary way: .
   at UglyToad.PdfPig.Util.DictionaryTokenExtensions.GetInt(DictionaryToken token, NameToken name)
   at UglyToad.PdfPig.CrossReference.TrailerDictionary..ctor(DictionaryToken dictionary)
   at UglyToad.PdfPig.CrossReference.CrossReferenceTableBuilder.Build(Int64 firstCrossReferenceOffset, Int64 offsetCorrection, ILog log)
   at UglyToad.PdfPig.Parser.FileStructure.CrossReferenceParser.Parse(IInputBytes bytes, Boolean isLenientParsing, Int64 crossReferenceLocation, Int64 offsetCorrection, IPdfTokenScanner pdfScanner, ISeekableTokenScanner tokenScanner)
   at UglyToad.PdfPig.Parser.PdfDocumentFactory.OpenDocument(IInputBytes inputBytes, ISeekableTokenScanner scanner, InternalParsingOptions parsingOptions)
   at UglyToad.PdfPig.Parser.PdfDocumentFactory.Open(IInputBytes inputBytes, ParsingOptions options)
   at UglyToad.PdfPig.Parser.PdfDocumentFactory.Open(Stream stream, ParsingOptions options)
   at UglyToad.PdfPig.PdfDocument.Open(Stream stream, ParsingOptions options)
   at JurisMatic.Files.Tests.FileDetectorTests.Find_bad_pdf() in C:\Projects\LarchSys\JurisMatic\Libraries\JurisMatic.Files.Tests\FileDetectorTests.cs:line 209
PdfP7M:  @"\pdf_p7m\PD.D.A.GEN.1041 - RELAZIONE CONSUMI ENERGETICI - EX LEGGE 10.91 .pdf.p7m"
 - UglyToad.PdfPig.Core.PdfDocumentFormatException: The dictionary did not contain a number with the key /Size. Dictionary way: .
   at UglyToad.PdfPig.Util.DictionaryTokenExtensions.GetInt(DictionaryToken token, NameToken name)
   at UglyToad.PdfPig.CrossReference.TrailerDictionary..ctor(DictionaryToken dictionary)
   at UglyToad.PdfPig.CrossReference.CrossReferenceTableBuilder.Build(Int64 firstCrossReferenceOffset, Int64 offsetCorrection, ILog log)
   at UglyToad.PdfPig.Parser.FileStructure.CrossReferenceParser.Parse(IInputBytes bytes, Boolean isLenientParsing, Int64 crossReferenceLocation, Int64 offsetCorrection, IPdfTokenScanner pdfScanner, ISeekableTokenScanner tokenScanner)
   at UglyToad.PdfPig.Parser.PdfDocumentFactory.OpenDocument(IInputBytes inputBytes, ISeekableTokenScanner scanner, InternalParsingOptions parsingOptions)
   at UglyToad.PdfPig.Parser.PdfDocumentFactory.Open(IInputBytes inputBytes, ParsingOptions options)
   at UglyToad.PdfPig.Parser.PdfDocumentFactory.Open(Stream stream, ParsingOptions options)
   at UglyToad.PdfPig.PdfDocument.Open(Stream stream, ParsingOptions options)
   at JurisMatic.Files.Tests.FileDetectorTests.Find_bad_pdf() in C:\Projects\LarchSys\JurisMatic\Libraries\JurisMatic.Files.Tests\FileDetectorTests.cs:line 209
PdfP7M:  @"\pdf_p7m\PD.D.A.GEN.1090 - RELAZIONE AUTORIZZAZIONE ALLO SCARICO.pdf.p7m"
 - UglyToad.PdfPig.Core.PdfDocumentFormatException: The dictionary did not contain a number with the key /Size. Dictionary way: .
   at UglyToad.PdfPig.Util.DictionaryTokenExtensions.GetInt(DictionaryToken token, NameToken name)
   at UglyToad.PdfPig.CrossReference.TrailerDictionary..ctor(DictionaryToken dictionary)
   at UglyToad.PdfPig.CrossReference.CrossReferenceTableBuilder.Build(Int64 firstCrossReferenceOffset, Int64 offsetCorrection, ILog log)
   at UglyToad.PdfPig.Parser.FileStructure.CrossReferenceParser.Parse(IInputBytes bytes, Boolean isLenientParsing, Int64 crossReferenceLocation, Int64 offsetCorrection, IPdfTokenScanner pdfScanner, ISeekableTokenScanner tokenScanner)
   at UglyToad.PdfPig.Parser.PdfDocumentFactory.OpenDocument(IInputBytes inputBytes, ISeekableTokenScanner scanner, InternalParsingOptions parsingOptions)
   at UglyToad.PdfPig.Parser.PdfDocumentFactory.Open(IInputBytes inputBytes, ParsingOptions options)
   at UglyToad.PdfPig.Parser.PdfDocumentFactory.Open(Stream stream, ParsingOptions options)
   at UglyToad.PdfPig.PdfDocument.Open(Stream stream, ParsingOptions options)
   at JurisMatic.Files.Tests.FileDetectorTests.Find_bad_pdf() in C:\Projects\LarchSys\JurisMatic\Libraries\JurisMatic.Files.Tests\FileDetectorTests.cs:line 209
PdfP7M:  @"\pdf_p7m\PD.GEO.01 RELAZIONE GEOLOGICA GEOTECNICA E DI COMPATIBILITA_.pdf.p7m"
 - UglyToad.PdfPig.Core.PdfDocumentFormatException: The dictionary did not contain a number with the key /Size. Dictionary way: .
   at UglyToad.PdfPig.Util.DictionaryTokenExtensions.GetInt(DictionaryToken token, NameToken name)
   at UglyToad.PdfPig.CrossReference.TrailerDictionary..ctor(DictionaryToken dictionary)
   at UglyToad.PdfPig.CrossReference.CrossReferenceTableBuilder.Build(Int64 firstCrossReferenceOffset, Int64 offsetCorrection, ILog log)
   at UglyToad.PdfPig.Parser.FileStructure.CrossReferenceParser.Parse(IInputBytes bytes, Boolean isLenientParsing, Int64 crossReferenceLocation, Int64 offsetCorrection, IPdfTokenScanner pdfScanner, ISeekableTokenScanner tokenScanner)
   at UglyToad.PdfPig.Parser.PdfDocumentFactory.OpenDocument(IInputBytes inputBytes, ISeekableTokenScanner scanner, InternalParsingOptions parsingOptions)
   at UglyToad.PdfPig.Parser.PdfDocumentFactory.Open(IInputBytes inputBytes, ParsingOptions options)
   at UglyToad.PdfPig.Parser.PdfDocumentFactory.Open(Stream stream, ParsingOptions options)
   at UglyToad.PdfPig.PdfDocument.Open(Stream stream, ParsingOptions options)
   at JurisMatic.Files.Tests.FileDetectorTests.Find_bad_pdf() in C:\Projects\LarchSys\JurisMatic\Libraries\JurisMatic.Files.Tests\FileDetectorTests.cs:line 209
PdfP7M:  @"\pdf_p7m\PD.GEO.02 ASSEVERAZIONE TIZIANA BAMPI.pdf.p7m"
 - UglyToad.PdfPig.Core.PdfDocumentFormatException: The dictionary did not contain a number with the key /Size. Dictionary way: .
   at UglyToad.PdfPig.Util.DictionaryTokenExtensions.GetInt(DictionaryToken token, NameToken name)
   at UglyToad.PdfPig.CrossReference.TrailerDictionary..ctor(DictionaryToken dictionary)
   at UglyToad.PdfPig.CrossReference.CrossReferenceTableBuilder.Build(Int64 firstCrossReferenceOffset, Int64 offsetCorrection, ILog log)
   at UglyToad.PdfPig.Parser.FileStructure.CrossReferenceParser.Parse(IInputBytes bytes, Boolean isLenientParsing, Int64 crossReferenceLocation, Int64 offsetCorrection, IPdfTokenScanner pdfScanner, ISeekableTokenScanner tokenScanner)
   at UglyToad.PdfPig.Parser.PdfDocumentFactory.OpenDocument(IInputBytes inputBytes, ISeekableTokenScanner scanner, InternalParsingOptions parsingOptions)
   at UglyToad.PdfPig.Parser.PdfDocumentFactory.Open(IInputBytes inputBytes, ParsingOptions options)
   at UglyToad.PdfPig.Parser.PdfDocumentFactory.Open(Stream stream, ParsingOptions options)
   at UglyToad.PdfPig.PdfDocument.Open(Stream stream, ParsingOptions options)
   at JurisMatic.Files.Tests.FileDetectorTests.Find_bad_pdf() in C:\Projects\LarchSys\JurisMatic\Libraries\JurisMatic.Files.Tests\FileDetectorTests.cs:line 209
PdfP7M:  @"\pdf_p7m\Relazione def.pdf.p7m"
 - UglyToad.PdfPig.Core.PdfDocumentFormatException: Could not find dictionary associated with reference in pages kids array: 35 0.
   at UglyToad.PdfPig.Content.PagesFactory.ProcessPagesNode(IndirectReference referenceInput, DictionaryToken nodeDictionaryInput, IndirectReference parentReferenceInput, Boolean isRoot, IPdfTokenScanner pdfTokenScanner, Boolean isLenientParsing, PageCounter pageNumber)
   at UglyToad.PdfPig.Content.PagesFactory.Create(IndirectReference pagesReference, DictionaryToken pagesDictionary, IPdfTokenScanner scanner, IPageFactory pageFactory, ILog log, Boolean isLenientParsing)
   at UglyToad.PdfPig.Parser.CatalogFactory.Create(IndirectReference rootReference, DictionaryToken dictionary, IPdfTokenScanner scanner, PageFactory pageFactory, ILog log, Boolean isLenientParsing)
   at UglyToad.PdfPig.Parser.PdfDocumentFactory.OpenDocument(IInputBytes inputBytes, ISeekableTokenScanner scanner, InternalParsingOptions parsingOptions)
   at UglyToad.PdfPig.Parser.PdfDocumentFactory.Open(IInputBytes inputBytes, ParsingOptions options)
   at UglyToad.PdfPig.Parser.PdfDocumentFactory.Open(Stream stream, ParsingOptions options)
   at UglyToad.PdfPig.PdfDocument.Open(Stream stream, ParsingOptions options)
   at JurisMatic.Files.Tests.FileDetectorTests.Find_bad_pdf() in C:\Projects\LarchSys\JurisMatic\Libraries\JurisMatic.Files.Tests\FileDetectorTests.cs:line 209

I could send you some of these files on a private channel.

Kind regards
René
@EliotJones EliotJones added enhancement document-reading Related to reading documents labels Sep 29, 2024
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@EliotJones @r-Larch