mirror of
https://github.com/Stirling-Tools/Stirling-PDF.git
synced 2024-11-04 23:10:11 +01:00
all inf
This commit is contained in:
Anthony Stirling
parent
f98f089d63
commit
52a7885f3c
@ -0,0 +1,335 @@
|
||||
package stirling.software.SPDF.controller.api.security;
|
||||
|
||||
import org.apache.pdfbox.pdmodel.PDDocument;
|
||||
import org.apache.pdfbox.pdmodel.PDDocumentInformation;
|
||||
import com.itextpdf.kernel.pdf.PdfObject;
|
||||
import com.itextpdf.forms.PdfAcroForm;
|
||||
import com.itextpdf.forms.fields.PdfFormField;
|
||||
import com.itextpdf.kernel.geom.Rectangle;
|
||||
import com.itextpdf.kernel.pdf.PdfArray;
|
||||
import com.itextpdf.kernel.pdf.PdfCatalog;
|
||||
import com.itextpdf.kernel.pdf.PdfDictionary;
|
||||
import com.itextpdf.kernel.pdf.PdfDocument;
|
||||
import com.itextpdf.kernel.pdf.PdfDocumentInfo;
|
||||
import com.itextpdf.kernel.pdf.PdfEncryption;
|
||||
import com.itextpdf.kernel.pdf.PdfReader;
|
||||
import com.itextpdf.kernel.pdf.PdfResources;
|
||||
import com.itextpdf.kernel.pdf.PdfStream;
|
||||
import com.itextpdf.kernel.pdf.PdfName;
|
||||
import com.itextpdf.kernel.pdf.PdfViewerPreferences;
|
||||
import com.itextpdf.kernel.pdf.PdfWriter;
|
||||
import com.itextpdf.kernel.pdf.annot.PdfAnnotation;
|
||||
import com.itextpdf.kernel.pdf.annot.PdfFileAttachmentAnnotation;
|
||||
import com.itextpdf.kernel.pdf.annot.PdfLinkAnnotation;
|
||||
import com.itextpdf.kernel.pdf.layer.PdfLayer;
|
||||
import com.itextpdf.kernel.pdf.layer.PdfOCProperties;
|
||||
import com.fasterxml.jackson.databind.ObjectMapper;
|
||||
import com.fasterxml.jackson.databind.node.ArrayNode;
|
||||
import com.fasterxml.jackson.databind.node.ObjectNode;
|
||||
import org.apache.pdfbox.text.PDFTextStripper;
|
||||
import java.io.File;
|
||||
import java.io.FileWriter;
|
||||
import java.text.SimpleDateFormat;
|
||||
import java.util.Calendar;
|
||||
import java.util.List;
|
||||
import java.util.Map;
|
||||
|
||||
public class PDFExtractor {
|
||||
public static void main(String[] args) {
|
||||
try {
|
||||
PDDocument pdfBoxDoc = PDDocument.load(new File("path_to_pdf.pdf"));
|
||||
ObjectMapper objectMapper = new ObjectMapper();
|
||||
ObjectNode jsonOutput = objectMapper.createObjectNode();
|
||||
|
||||
// Metadata using PDFBox
|
||||
PDDocumentInformation info = pdfBoxDoc.getDocumentInformation();
|
||||
ObjectNode metadata = objectMapper.createObjectNode();
|
||||
metadata.put("Title", info.getTitle());
|
||||
metadata.put("Author", info.getAuthor());
|
||||
metadata.put("Subject", info.getSubject());
|
||||
metadata.put("Keywords", info.getKeywords());
|
||||
metadata.put("Producer", info.getProducer());
|
||||
metadata.put("Creator", info.getCreator());
|
||||
metadata.put("CreationDate", formatDate(info.getCreationDate()));
|
||||
metadata.put("ModificationDate", formatDate(info.getModificationDate()));
|
||||
metadata.put("Trapped", info.getTrapped());
|
||||
jsonOutput.set("Metadata", metadata);
|
||||
|
||||
// Document Information using PDFBox
|
||||
ObjectNode docInfoNode = objectMapper.createObjectNode();
|
||||
docInfoNode.put("Number of pages", pdfBoxDoc.getNumberOfPages());
|
||||
docInfoNode.put("PDF version", pdfBoxDoc.getVersion());
|
||||
;
|
||||
|
||||
// Page Mode using iText7
|
||||
PdfDocument itextDoc = new PdfDocument(new PdfReader("path_to_pdf.pdf"));
|
||||
PdfCatalog catalog = itextDoc.getCatalog();
|
||||
PdfName pageMode = catalog.getPdfObject().getAsName(PdfName.PageMode);
|
||||
|
||||
ObjectNode itextDocInfo = objectMapper.createObjectNode();
|
||||
docInfoNode.put("Page Mode", getPageModeDescription(pageMode));;
|
||||
|
||||
jsonOutput.set("Document Information", docInfoNode);
|
||||
|
||||
for (int pageNum = 1; pageNum <= itextDoc.getNumberOfPages(); pageNum++) {
|
||||
ObjectNode pageInfo = objectMapper.createObjectNode();
|
||||
|
||||
// Page-level Information
|
||||
Rectangle pageSize = itextDoc.getPage(pageNum).getPageSize();
|
||||
pageInfo.put("Width", pageSize.getWidth());
|
||||
pageInfo.put("Height", pageSize.getHeight());
|
||||
pageInfo.put("Rotation", itextDoc.getPage(pageNum).getRotation());
|
||||
|
||||
// Boxes
|
||||
pageInfo.put("MediaBox", itextDoc.getPage(pageNum).getMediaBox().toString());
|
||||
pageInfo.put("CropBox", itextDoc.getPage(pageNum).getCropBox().toString());
|
||||
pageInfo.put("BleedBox", itextDoc.getPage(pageNum).getBleedBox().toString());
|
||||
pageInfo.put("TrimBox", itextDoc.getPage(pageNum).getTrimBox().toString());
|
||||
pageInfo.put("ArtBox", itextDoc.getPage(pageNum).getArtBox().toString());
|
||||
|
||||
// Content Extraction
|
||||
PDFTextStripper textStripper = new PDFTextStripper();
|
||||
textStripper.setStartPage(pageNum -1);
|
||||
textStripper.setEndPage(pageNum - 1);
|
||||
String pageText = textStripper.getText(pdfBoxDoc);
|
||||
|
||||
pageInfo.put("Text Characters Count", pageText.length()); //
|
||||
|
||||
// Annotations
|
||||
ArrayNode annotationsArray = objectMapper.createArrayNode();
|
||||
List<PdfAnnotation> annotations = itextDoc.getPage(pageNum).getAnnotations();
|
||||
for (PdfAnnotation annotation : annotations) {
|
||||
ObjectNode annotationNode = objectMapper.createObjectNode();
|
||||
annotationNode.put("Subtype", annotation.getSubtype().toString());
|
||||
annotationNode.put("Contents", annotation.getContents().getValue());
|
||||
annotationsArray.add(annotationNode);
|
||||
}
|
||||
pageInfo.set("Annotations", annotationsArray);
|
||||
|
||||
// Images (simplified)
|
||||
// This part is non-trivial as images can be embedded in multiple ways in a PDF.
|
||||
// Here is a basic structure to recognize image XObjects on a page.
|
||||
ArrayNode imagesArray = objectMapper.createArrayNode();
|
||||
PdfResources resources = itextDoc.getPage(pageNum).getResources();
|
||||
for (PdfName name : resources.getResourceNames()) {
|
||||
PdfObject obj = resources.getResource(name);
|
||||
if (obj instanceof PdfStream) {
|
||||
PdfStream stream = (PdfStream) obj;
|
||||
if (PdfName.Image.equals(stream.getAsName(PdfName.Subtype))) {
|
||||
ObjectNode imageNode = objectMapper.createObjectNode();
|
||||
imageNode.put("Width", stream.getAsNumber(PdfName.Width).intValue());
|
||||
imageNode.put("Height", stream.getAsNumber(PdfName.Height).intValue());
|
||||
PdfObject colorSpace = stream.get(PdfName.ColorSpace);
|
||||
if (colorSpace != null) {
|
||||
imageNode.put("ColorSpace", colorSpace.toString());
|
||||
}
|
||||
imagesArray.add(imageNode);
|
||||
}
|
||||
}
|
||||
}
|
||||
pageInfo.set("Images", imagesArray);
|
||||
|
||||
// Links
|
||||
ArrayNode linksArray = objectMapper.createArrayNode();
|
||||
for (PdfAnnotation annotation : annotations) {
|
||||
if (annotation instanceof PdfLinkAnnotation) {
|
||||
PdfLinkAnnotation linkAnnotation = (PdfLinkAnnotation) annotation;
|
||||
ObjectNode linkNode = objectMapper.createObjectNode();
|
||||
linkNode.put("URI", linkAnnotation.getAction().toString()); // Basic, might not work for all links
|
||||
linksArray.add(linkNode);
|
||||
}
|
||||
}
|
||||
pageInfo.set("Links", linksArray);
|
||||
|
||||
//Fonts
|
||||
ArrayNode fontsArray = objectMapper.createArrayNode();
|
||||
PdfDictionary fontDicts = resources.getResource(PdfName.Font);
|
||||
if (fontDicts != null) {
|
||||
for (PdfName key : fontDicts.keySet()) {
|
||||
PdfDictionary font = fontDicts.getAsDictionary(key);
|
||||
ObjectNode fontNode = objectMapper.createObjectNode();
|
||||
fontNode.put("Name", font.getAsString(PdfName.BaseFont).toString());
|
||||
|
||||
// Font Subtype (e.g., Type1, TrueType)
|
||||
if (font.containsKey(PdfName.Subtype)) {
|
||||
fontNode.put("Subtype", font.getAsName(PdfName.Subtype).toString());
|
||||
}
|
||||
|
||||
// Font Descriptor
|
||||
PdfDictionary fontDescriptor = font.getAsDictionary(PdfName.FontDescriptor);
|
||||
if (fontDescriptor != null) {
|
||||
// Italic Angle
|
||||
if (fontDescriptor.containsKey(PdfName.ItalicAngle)) {
|
||||
fontNode.put("ItalicAngle", fontDescriptor.getAsNumber(PdfName.ItalicAngle).floatValue());
|
||||
}
|
||||
|
||||
// Flags (e.g., italic, bold)
|
||||
if (fontDescriptor.containsKey(PdfName.Flags)) {
|
||||
int flags = fontDescriptor.getAsNumber(PdfName.Flags).intValue();
|
||||
fontNode.put("IsItalic", (flags & 64) != 0);
|
||||
fontNode.put("IsBold", (flags & 1) != 0);
|
||||
}
|
||||
}
|
||||
|
||||
fontsArray.add(fontNode);
|
||||
}
|
||||
}
|
||||
pageInfo.set("Fonts", fontsArray);
|
||||
|
||||
|
||||
|
||||
|
||||
// Access resources dictionary
|
||||
PdfDictionary resourcesDict = itextDoc.getPage(pageNum).getResources().getPdfObject();
|
||||
|
||||
// Color Spaces & ICC Profiles
|
||||
ArrayNode colorSpacesArray = objectMapper.createArrayNode();
|
||||
PdfDictionary colorSpaces = resourcesDict.getAsDictionary(PdfName.ColorSpace);
|
||||
if (colorSpaces != null) {
|
||||
for (PdfName name : colorSpaces.keySet()) {
|
||||
PdfObject colorSpaceObject = colorSpaces.get(name);
|
||||
if (colorSpaceObject instanceof PdfArray) {
|
||||
PdfArray colorSpaceArray = (PdfArray) colorSpaceObject;
|
||||
if (colorSpaceArray.size() > 1 && colorSpaceArray.get(0) instanceof PdfName && PdfName.ICCBased.equals(colorSpaceArray.get(0))) {
|
||||
ObjectNode iccProfileNode = objectMapper.createObjectNode();
|
||||
PdfStream iccStream = (PdfStream) colorSpaceArray.get(1);
|
||||
byte[] iccData = iccStream.getBytes();
|
||||
// TODO: Further decode and analyze the ICC data if needed
|
||||
iccProfileNode.put("ICC Profile Length", iccData.length);
|
||||
colorSpacesArray.add(iccProfileNode);
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
pageInfo.set("Color Spaces & ICC Profiles", colorSpacesArray);
|
||||
|
||||
// Other XObjects
|
||||
ArrayNode xObjectsArray = objectMapper.createArrayNode();
|
||||
PdfDictionary xObjects = resourcesDict.getAsDictionary(PdfName.XObject);
|
||||
if (xObjects != null) {
|
||||
for (PdfName name : xObjects.keySet()) {
|
||||
PdfStream xObjectStream = xObjects.getAsStream(name);
|
||||
ObjectNode xObjectNode = objectMapper.createObjectNode();
|
||||
xObjectNode.put("Type", xObjectStream.getAsName(PdfName.Subtype).toString());
|
||||
// TODO: Extract further details depending on the XObject type
|
||||
xObjectsArray.add(xObjectNode);
|
||||
}
|
||||
}
|
||||
pageInfo.set("XObjects", xObjectsArray);
|
||||
|
||||
jsonOutput.set("Page " + pageNum, pageInfo);
|
||||
}
|
||||
|
||||
PdfAcroForm acroForm = PdfAcroForm.getAcroForm(itextDoc, false);
|
||||
if (acroForm != null) {
|
||||
ObjectNode formFieldsNode = objectMapper.createObjectNode();
|
||||
for (Map.Entry<String, PdfFormField> entry : acroForm.getFormFields().entrySet()) {
|
||||
formFieldsNode.put(entry.getKey(), entry.getValue().getValueAsString());
|
||||
}
|
||||
jsonOutput.set("FormFields", formFieldsNode);
|
||||
}
|
||||
|
||||
|
||||
|
||||
//TODO bookmarks here
|
||||
|
||||
|
||||
|
||||
|
||||
//embeed files TODO size
|
||||
PdfDictionary embeddedFiles = itextDoc.getCatalog().getPdfObject().getAsDictionary(PdfName.Names)
|
||||
.getAsDictionary(PdfName.EmbeddedFiles);
|
||||
if (embeddedFiles != null) {
|
||||
ArrayNode embeddedFilesArray = objectMapper.createArrayNode();
|
||||
PdfArray namesArray = embeddedFiles.getAsArray(PdfName.Names);
|
||||
for (int i = 0; i < namesArray.size(); i += 2) {
|
||||
ObjectNode embeddedFileNode = objectMapper.createObjectNode();
|
||||
embeddedFileNode.put("Name", namesArray.getAsString(i).toString());
|
||||
// Add other details if required
|
||||
embeddedFilesArray.add(embeddedFileNode);
|
||||
}
|
||||
jsonOutput.set("EmbeddedFiles", embeddedFilesArray);
|
||||
}
|
||||
|
||||
|
||||
//attachments TODO size
|
||||
ArrayNode attachmentsArray = objectMapper.createArrayNode();
|
||||
for (int pageNum = 1; pageNum <= itextDoc.getNumberOfPages(); pageNum++) {
|
||||
for (PdfAnnotation annotation : itextDoc.getPage(pageNum).getAnnotations()) {
|
||||
if (annotation instanceof PdfFileAttachmentAnnotation) {
|
||||
ObjectNode attachmentNode = objectMapper.createObjectNode();
|
||||
attachmentNode.put("Name", ((PdfFileAttachmentAnnotation) annotation).getName().toString());
|
||||
attachmentNode.put("Description", annotation.getContents().getValue());
|
||||
attachmentsArray.add(attachmentNode);
|
||||
}
|
||||
}
|
||||
}
|
||||
jsonOutput.set("Attachments", attachmentsArray);
|
||||
|
||||
//Javascript
|
||||
PdfDictionary namesDict = itextDoc.getCatalog().getPdfObject().getAsDictionary(PdfName.Names);
|
||||
if (namesDict != null) {
|
||||
PdfDictionary javascriptDict = namesDict.getAsDictionary(PdfName.JavaScript);
|
||||
if (javascriptDict != null) {
|
||||
ArrayNode javascriptArray = objectMapper.createArrayNode();
|
||||
PdfArray namesArray = javascriptDict.getAsArray(PdfName.Names);
|
||||
for (int i = 0; i < namesArray.size(); i += 2) {
|
||||
ObjectNode jsNode = objectMapper.createObjectNode();
|
||||
jsNode.put("JS Name", namesArray.getAsString(i).toString());
|
||||
jsNode.put("JS Code", namesArray.getAsString(i + 1).toString());
|
||||
javascriptArray.add(jsNode);
|
||||
}
|
||||
jsonOutput.set("JavaScripts", javascriptArray);
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
//TODO size
|
||||
PdfOCProperties ocProperties = itextDoc.getCatalog().getOCProperties(false);
|
||||
if (ocProperties != null) {
|
||||
ArrayNode layersArray = objectMapper.createArrayNode();
|
||||
for (PdfLayer layer : ocProperties.getLayers()) {
|
||||
ObjectNode layerNode = objectMapper.createObjectNode();
|
||||
layerNode.put("Name", layer.getPdfObject().getAsString(PdfName.Name).toString());
|
||||
layersArray.add(layerNode);
|
||||
}
|
||||
jsonOutput.set("Layers", layersArray);
|
||||
}
|
||||
|
||||
|
||||
//TODO Security
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
// Digital Signatures using iText7 TODO
|
||||
|
||||
|
||||
// Save JSON to file
|
||||
try (FileWriter file = new FileWriter("output.json")) {
|
||||
file.write(objectMapper.writerWithDefaultPrettyPrinter().writeValueAsString(jsonOutput));
|
||||
file.flush();
|
||||
}
|
||||
|
||||
pdfBoxDoc.close();
|
||||
itextDoc.close();
|
||||
} catch (Exception e) {
|
||||
e.printStackTrace();
|
||||
}
|
||||
}
|
||||
|
||||
private static String formatDate(Calendar calendar) {
|
||||
if (calendar != null) {
|
||||
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
|
||||
return sdf.format(calendar.getTime());
|
||||
} else {
|
||||
return null;
|
||||
}
|
||||
}
|
||||
|
||||
private static String getPageModeDescription(PdfName pageMode) {
|
||||
return pageMode != null ? pageMode.toString().replaceFirst("/", "") : "Unknown";
|
||||
}
|
||||
}
|
||||
Loading…
Reference in New Issue
Block a user