private static DateTime?ToDate(PdfString pdfstr)
{
string strRet = null;
if (pdfstr != null)
{
strRet = pdfstr.ToUnicodeString();
return(PdfDate.Decode(strRet));
}
return(null);
}
///// <summary>
///// Fonts in file
///// </summary>
//internal List<Font> Fonts { get; set; }
public override string ToString()
=> new StringBuilder($"PDF description:")
.Append($"\r\n - Title: {Title}")
.Append($"\r\n - Author: {Author}")
.Append($"\r\n - Subject: {Subject}")
.Append($"\r\n - Keywords: {Keywords}")
.Append($"\r\n - Creator: {Creator}")
.Append($"\r\n - Producer: {Producer}")
.Append($"\r\n - Version: {Version}")
.Append($"\r\n - Creatioan date: " +
$"{(string.IsNullOrEmpty(CreationDate) ? string.Empty : PdfDate.Decode(CreationDate).ToString())}")
.Append($"\r\n - Modification date: " +
$"{(string.IsNullOrEmpty(ModificationDate) ? string.Empty : PdfDate.Decode(ModificationDate).ToString())}")
.ToString();
/// <summary>
/// Prepares an
/// <see cref="PdfPKCS7"/>
/// instance for the given signature.
/// This method handles signature parsing and might throw an exception if
/// signature is malformed.
/// <p>
/// The returned
/// <see cref="PdfPKCS7"/>
/// can be used to fetch additional info about the signature
/// and also to perform integrity check of data signed by the given signature field.
/// </p>
/// Prepared
/// <see cref="PdfPKCS7"/>
/// instance calculates digest based on signature's /ByteRange entry.
/// In order to check that /ByteRange is properly defined and given signature indeed covers the current PDF document
/// revision please use
/// <see cref="SignatureCoversWholeDocument(System.String)"/>
/// method.
/// </summary>
/// <param name="signatureFieldName">the signature field name</param>
/// <param name="securityProvider">the security provider or null for the default provider</param>
/// <returns>
/// a
/// <see cref="PdfPKCS7"/>
/// instance which can be used to fetch additional info about the signature
/// and also to perform integrity check of data signed by the given signature field.
/// </returns>
public virtual PdfPKCS7 ReadSignatureData(String signatureFieldName)
{
PdfSignature signature = GetSignature(signatureFieldName);
if (signature == null)
{
return(null);
}
try {
PdfName sub = signature.GetSubFilter();
PdfString contents = signature.GetContents();
PdfPKCS7 pk = null;
if (sub.Equals(PdfName.Adbe_x509_rsa_sha1))
{
PdfString cert = signature.GetPdfObject().GetAsString(PdfName.Cert);
if (cert == null)
{
cert = signature.GetPdfObject().GetAsArray(PdfName.Cert).GetAsString(0);
}
pk = new PdfPKCS7(PdfEncodings.ConvertToBytes(contents.GetValue(), null), cert.GetValueBytes());
}
else
{
pk = new PdfPKCS7(PdfEncodings.ConvertToBytes(contents.GetValue(), null), sub);
}
UpdateByteRange(pk, signature);
PdfString date = signature.GetDate();
if (date != null)
{
pk.SetSignDate(PdfDate.Decode(date.ToString()));
}
String signName = signature.GetName();
pk.SetSignName(signName);
String reason = signature.GetReason();
if (reason != null)
{
pk.SetReason(reason);
}
String location = signature.GetLocation();
if (location != null)
{
pk.SetLocation(location);
}
return(pk);
}
catch (Exception e) {
throw new PdfException(e);
}
}
/// <summary>
/// Returns a PdfObject that can be used as the value of a Collection Item.
/// </summary>
public PdfObject GetValue(string v)
{
switch (FieldType)
{
case TEXT:
return(new PdfString(v, TEXT_UNICODE));
case DATE:
return(new PdfDate(PdfDate.Decode(v)));
case NUMBER:
return(new PdfNumber(v));
}
throw new InvalidOperationException($"{v} is not an acceptable value for the field {Get(PdfName.N)}");
}
/**
* Returns a PdfObject that can be used as the value of a Collection Item.
* @param String value the value that has to be changed into a PdfObject (PdfString, PdfDate or PdfNumber)
*/
virtual public PdfObject GetValue(String v)
{
switch (fieldType)
{
case TEXT:
return(new PdfString(v, PdfObject.TEXT_UNICODE));
case DATE:
return(new PdfDate(PdfDate.Decode(v)));
case NUMBER:
return(new PdfNumber(v));
}
throw new InvalidOperationException(MessageLocalization.GetComposedMessage("1.is.not.an.acceptable.value.for.the.field.2", v, Get(PdfName.N).ToString()));
}
public virtual void DontAddDateItemToAnotherSubTypeFieldTest()
{
String fieldName = "fieldName";
String timeValueAsString = "D:19860426012347+04'00'";
PdfDictionary pdfObject = new PdfDictionary();
pdfObject.Put(PdfName.Subtype, PdfName.F);
PdfCollectionField field = new PdfCollectionField(pdfObject);
PdfCollectionSchema schema = new PdfCollectionSchema();
schema.AddField(fieldName, field);
PdfCollectionItem item = new PdfCollectionItem(schema);
item.AddItem(fieldName, new PdfDate(PdfDate.Decode(timeValueAsString)));
NUnit.Framework.Assert.IsNull(item.GetPdfObject().GetAsString(new PdfName(fieldName)));
}
public virtual void AddDateItemTest()
{
String fieldName = "fieldName";
String timeValueAsString = "D:19860426012347+04'00'";
PdfDictionary pdfObject = new PdfDictionary();
pdfObject.Put(PdfName.Subtype, PdfName.D);
PdfCollectionField field = new PdfCollectionField(pdfObject);
PdfCollectionSchema schema = new PdfCollectionSchema();
schema.AddField(fieldName, field);
PdfCollectionItem item = new PdfCollectionItem(schema);
item.AddItem(fieldName, new PdfDate(PdfDate.Decode(timeValueAsString)));
NUnit.Framework.Assert.IsTrue(((PdfString)field.GetValue(timeValueAsString)).GetValue().StartsWith("D:1986"
));
}
private string GetModifyDatePdf(string fullPath)
{
try
{
using (PdfReader reader = new PdfReader(fullPath))
{
if (reader.Info.ContainsKey("ModDate"))
{
return(PdfDate.Decode(reader.Info["ModDate"]).ToString());
}
return(blank);
}
}
catch
{
return(cannotOpen);
}
}
public virtual PdfObject GetValue(String value)
{
switch (subType)
{
case TEXT: {
return(new PdfString(value));
}
case DATE: {
return(new PdfDate(PdfDate.Decode(value)).GetPdfObject());
}
case NUMBER: {
return(new PdfNumber(System.Double.Parse(value.Trim(), System.Globalization.CultureInfo.InvariantCulture)));
}
}
throw new PdfException(PdfException._1IsNotAnAcceptableValueForTheField2).SetMessageParams(value, GetPdfObject
().GetAsName(PdfName.N).GetValue());
}
public string Pdf_get_metadata(string path)
{
PdfDocument pdfDoc = new PdfDocument(new PdfReader(path));
Document doc = new Document(pdfDoc);
PdfFont pdfFont;
pdfFont = null;
PdfDictionary infoDictionary = pdfDoc.GetTrailer().GetAsDictionary(PdfName.Info);
string metadatastring = $"Metadata: {Environment.NewLine}";
foreach (PdfName key in infoDictionary.KeySet())
{
string keytext = infoDictionary.GetAsString(key).ToUnicodeString();
if (key == PdfName.CreationDate | key == PdfName.ModDate)
{
DateTime date = PdfDate.Decode(keytext);
keytext = date.ToString("dd/MM/yyyy HH:mm:ss");
}
string cleankey = ($"{ key }").Replace("/", "");
metadatastring += $"{cleankey}: {keytext}{Environment.NewLine}{Environment.NewLine}";
}
metadatastring += $"-----------------{Environment.NewLine}";
HashSet <string> fontinfo = Find_fonts(path);
if (fontinfo != null && fontinfo.Count > 0)
{
metadatastring += $"OCR present because pdf has {fontinfo.Count} fonts.{Environment.NewLine}-----------------{Environment.NewLine}";
}
else
{
metadatastring += $"OCR NOT present because pdf has no fonts.{Environment.NewLine}-----------------{Environment.NewLine}";
}
metadatastring += $"Pages: {pdfDoc.GetNumberOfPages().ToString()}" + Environment.NewLine;
return(metadatastring);
}
public static PDFFileInfo GetPDFMetaData(Stream pdfStream, string filePath, bool deepinfo)
{
var fileInfo = new PDFFileInfo();
fileInfo.FilePath = filePath;
fileInfo.FileName = System.IO.Path.GetFileName(filePath);
if (pdfStream.Length == 0)
{
fileInfo.ErrorMessages.Add("Zero length file");
return(fileInfo);
}
try
{
pdfStream.Position = 0; // Ensure that we are at the start
}
catch (NotSupportedException) { }
try
{
// Note: PdfReader Dispose closes the stream...
using (PdfReader reader = new PdfReader(pdfStream))
{
fileInfo.PDFVersion = reader.PdfVersion;
fileInfo.PageCount = reader.NumberOfPages;
fileInfo.FileSize = reader.FileLength;
if (reader.Info != null)
{
try
{
if (reader.Info.ContainsKey("CreationDate"))
{
fileInfo.CreationDate = PdfDate.Decode(reader.Info["CreationDate"]);
}
if (reader.Info.ContainsKey("ModDate"))
{
fileInfo.ModDate = PdfDate.Decode(reader.Info["ModDate"]);
}
}
catch (Exception ex)
{
fileInfo.ErrorMessages.Add($"PdfDate Decode {ex.Message.Replace(',',' ')}");
}
if (reader.Info.ContainsKey("Creator"))
{
fileInfo.Creator = reader.Info["Creator"];
}
if (reader.Info.ContainsKey("Producer"))
{
fileInfo.Producer = reader.Info["Producer"];
}
}
if (deepinfo)
{
var parser = new PdfReaderContentParser(reader);
ImageRenderListener listener = null;
for (var i = 1; i <= reader.NumberOfPages; i++)
{
var page = new PDFPageInfo();
try
{
parser.ProcessContent(i, (listener = new ImageRenderListener(fileInfo.ErrorMessages)));
}
catch (Exception ex)
{
fileInfo.ErrorMessages.Add($"Page {i} Image Processing Exception: {ex.Message.Replace(',', ' ')}");
}
try
{
var pageText = PdfTextExtractor.GetTextFromPage(reader, i, new SimpleTextExtractionStrategy());
page.TextCharacters += pageText.Length;
}
catch (System.ArgumentException ex)
{
fileInfo.ErrorMessages.Add($"Page {i} Text Extraction Exception {ex.Message.Replace(',', ' ')}");
}
page.PageNum = i;
page.ImageCount = listener.Images.Count;
page.Images = listener.Images;
for (int j = 0; j < page.ImageCount; j++)
{
page.Images[j].ImageNum = j + 1;
page.ImageBytes += page.Images[j].ImageBytes;
}
fileInfo.Pages.Add(page);
fileInfo.ImageCount += page.ImageCount;
fileInfo.ImageBytes += page.ImageBytes;
fileInfo.TextCharacters += page.TextCharacters;
}
}
}
}
catch (Exception ex)
{
fileInfo.ErrorMessages.Add(ex.Message);
}
return(fileInfo);
}
/// <summary>Verifies a signature.</summary>
/// <remarks>
/// Verifies a signature. Further verification can be done on the returned
/// <see cref="PdfPKCS7"/>
/// object.
/// </remarks>
/// <param name="name">the signature field name</param>
/// <param name="provider">the provider or null for the default provider</param>
/// <returns>PdfPKCS7 object to continue the verification</returns>
public virtual PdfPKCS7 VerifySignature(String name)
{
PdfDictionary v = GetSignatureDictionary(name);
if (v == null)
{
return(null);
}
try {
PdfName sub = v.GetAsName(PdfName.SubFilter);
PdfString contents = v.GetAsString(PdfName.Contents);
PdfPKCS7 pk = null;
if (sub.Equals(PdfName.Adbe_x509_rsa_sha1))
{
PdfString cert = v.GetAsString(PdfName.Cert);
if (cert == null)
{
cert = v.GetAsArray(PdfName.Cert).GetAsString(0);
}
pk = new PdfPKCS7(PdfEncodings.ConvertToBytes(contents.GetValue(), null), cert.GetValueBytes());
}
else
{
pk = new PdfPKCS7(PdfEncodings.ConvertToBytes(contents.GetValue(), null), sub);
}
UpdateByteRange(pk, v);
PdfString str = v.GetAsString(PdfName.M);
if (str != null)
{
pk.SetSignDate(PdfDate.Decode(str.ToString()));
}
PdfObject obj = v.Get(PdfName.Name);
if (obj != null)
{
if (obj.IsString())
{
pk.SetSignName(((PdfString)obj).ToUnicodeString());
}
else
{
if (obj.IsName())
{
pk.SetSignName(((PdfName)obj).GetValue());
}
}
}
str = v.GetAsString(PdfName.Reason);
if (str != null)
{
pk.SetReason(str.ToUnicodeString());
}
str = v.GetAsString(PdfName.Location);
if (str != null)
{
pk.SetLocation(str.ToUnicodeString());
}
return(pk);
}
catch (Exception e) {
throw new PdfException(e);
}
}
public static void CheckForXMPMetadataUpdateStrings(string file, Metadata metadata, OutputFormat format, bool encryption, string ownerPassword)
{
if (encryption)
{
file = GetDecryptedFile(file, ownerPassword);
}
var content = File.ReadAllText(file);
var regex = new Regex(@"(<.xpacket begin=[\s\S]*?<.xpacket end=.+>)");
var matches = regex.Matches(content);
string xmlString;
Assert.DoesNotThrow(() => { xmlString = matches[matches.Count - 1].ToString(); },
"Missing XMP Metadata starting and ending with \'<?xpacket\'.");
xmlString = matches[matches.Count - 1].ToString();
//Check if xmp structure is valid
var doc = new XmlDocument();
doc.LoadXml(xmlString); //Throws XmlException
doc.Schemas = new XmlSchemaSet();
var reader = new PdfReader(file);
var nsmgr = new XmlNamespaceManager(doc.NameTable);
nsmgr.AddNamespace("pdfaid", "http://www.aiim.org/pdfa/ns/id/");
nsmgr.AddNamespace("rdf", "http://www.w3.org/1999/02/22-rdf-syntax-ns#");
nsmgr.AddNamespace("dc", "http://purl.org/dc/elements/1.1/");
nsmgr.AddNamespace("xmp", "http://ns.adobe.com/xap/1.0/");
nsmgr.AddNamespace("xmpMM", "http://ns.adobe.com/xap/1.0/mm/");
nsmgr.AddNamespace("pdf", "http://ns.adobe.com/pdf/1.3/");
var node = doc.SelectSingleNode("//pdfaid:part", nsmgr);
Assert.NotNull(node, "PDF/A id part is not set.");
var part = format == OutputFormat.PdfA1B ? "1" : "2";
Assert.AreEqual(part, node.InnerText.Trim(), "PDF/A id part is not set properly.");
node = doc.SelectSingleNode("//pdfaid:conformance", nsmgr);
Assert.NotNull(node, "PDF/A id conformance is not set.");
Assert.AreEqual("B", node.InnerText.Trim(), "PDF/A id conformance is not set properly.");
node = doc.SelectSingleNode("//xmp:CreateDate", nsmgr);
Assert.NotNull(node, "Creation date is not set.");
var expectedDate = PdfDate.Decode(reader.Info["CreationDate"]);
var creationDate = DateTime.Parse(node.InnerText.Trim());
Assert.AreEqual(expectedDate, creationDate, "Creation date is wrong.");
node = doc.SelectSingleNode("//xmp:ModifyDate", nsmgr);
Assert.NotNull(node, "Modify date is not set.");
Assert.IsTrue(Regex.IsMatch(node.InnerText.Trim(), @"[1-2][0-9]{3}-[0-1][0-9]-[0-3][0-9]T[0-2][0-9]:[0-5][0-9]:[0-5][0-9]([\+\-Z][0-2][0-9]:[0-5][0-9]){0,1}"), "Modify date in wrong format.");
//same as creation date???
node = doc.SelectSingleNode("//dc:title/rdf:Alt/rdf:li", nsmgr);
Assert.NotNull(node, "Title is not set.");
Assert.AreEqual(metadata.Title, node.InnerText.Trim(), "Title is not set properly.");
node = doc.SelectSingleNode("//dc:description/rdf:Alt/rdf:li", nsmgr);
Assert.NotNull(node, "Description is not set.");
Assert.AreEqual(metadata.Subject, node.InnerText.Trim(), "Description (Subject) is not set properly.");
node = doc.SelectSingleNode("//dc:creator/rdf:Seq/rdf:li", nsmgr);
Assert.NotNull(node, "Creator is not set.");
Assert.AreEqual(metadata.Author, node.InnerText.Trim(), "Creator (Author) is not set properly.");
node = doc.SelectSingleNode("//pdf:Producer", nsmgr);
Assert.NotNull(node, "PDF producer is not set.");
Assert.IsTrue(Regex.IsMatch(node.InnerText.Trim(), "PDFCreator [0-9].[0-9].[0-9].[0-9].*"), "PDF producer is not PDFCreator X.X.X.X.");
node = doc.SelectSingleNode("//pdf:Keywords", nsmgr);
Assert.NotNull(node, "PDF Keywords are not set.");
Assert.AreEqual(metadata.Keywords, node.InnerText.Trim(), "Keywords are not set properly.");
/*
* node = doc.SelectSingleNode("//xmpMM:DocumentID", nsmgr);
* Assert.NotNull(node, "Document ID is not set.");
* Assert.IsTrue(Regex.IsMatch(node.InnerText.Trim(), @"uuid:[0-9A-Za-z\-]{32,}"), "Document ID in wrong format.");
* //*/
}
public static DateTime ToDateTime(this string str)
{
return(PdfDate.Decode(str));
}
