src/ooxml/testcases/org/apache/poi/xwpf/TestDocumentProtection.java

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   this work for additional information regarding copyright ownership.
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package org.apache.poi.xwpf;

import static org.junit.jupiter.api.Assertions.assertEquals;
import static org.junit.jupiter.api.Assertions.assertFalse;
import static org.junit.jupiter.api.Assertions.assertTrue;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;

import org.apache.poi.poifs.crypt.CryptoFunctions;
import org.apache.poi.poifs.crypt.HashAlgorithm;
import org.apache.poi.util.TempFile;
import org.apache.poi.xwpf.usermodel.XWPFDocument;
import org.apache.poi.xwpf.usermodel.XWPFParagraph;
import org.apache.poi.xwpf.usermodel.XWPFRun;
import org.junit.jupiter.api.Test;

class TestDocumentProtection {

    @Test
    void testShouldReadEnforcementProperties() throws IOException {

        XWPFDocument documentWithoutDocumentProtectionTag = XWPFTestDataSamples.openSampleDocument("documentProtection_no_protection.docx");
        assertFalse(documentWithoutDocumentProtectionTag.isEnforcedReadonlyProtection());
        assertFalse(documentWithoutDocumentProtectionTag.isEnforcedFillingFormsProtection());
        assertFalse(documentWithoutDocumentProtectionTag.isEnforcedCommentsProtection());
        assertFalse(documentWithoutDocumentProtectionTag.isEnforcedTrackedChangesProtection());
        documentWithoutDocumentProtectionTag.close();

        XWPFDocument documentWithoutEnforcement = XWPFTestDataSamples.openSampleDocument("documentProtection_no_protection_tag_existing.docx");
        assertFalse(documentWithoutEnforcement.isEnforcedReadonlyProtection());
        assertFalse(documentWithoutEnforcement.isEnforcedFillingFormsProtection());
        assertFalse(documentWithoutEnforcement.isEnforcedCommentsProtection());
        assertFalse(documentWithoutEnforcement.isEnforcedTrackedChangesProtection());
        documentWithoutEnforcement.close();

        XWPFDocument documentWithReadonlyEnforcement = XWPFTestDataSamples.openSampleDocument("documentProtection_readonly_no_password.docx");
        assertTrue(documentWithReadonlyEnforcement.isEnforcedReadonlyProtection());
        assertFalse(documentWithReadonlyEnforcement.isEnforcedFillingFormsProtection());
        assertFalse(documentWithReadonlyEnforcement.isEnforcedCommentsProtection());
        assertFalse(documentWithReadonlyEnforcement.isEnforcedTrackedChangesProtection());
        documentWithReadonlyEnforcement.close();

        XWPFDocument documentWithFillingFormsEnforcement = XWPFTestDataSamples.openSampleDocument("documentProtection_forms_no_password.docx");
        assertTrue(documentWithFillingFormsEnforcement.isEnforcedFillingFormsProtection());
        assertFalse(documentWithFillingFormsEnforcement.isEnforcedReadonlyProtection());
        assertFalse(documentWithFillingFormsEnforcement.isEnforcedCommentsProtection());
        assertFalse(documentWithFillingFormsEnforcement.isEnforcedTrackedChangesProtection());
        documentWithFillingFormsEnforcement.close();

        XWPFDocument documentWithCommentsEnforcement = XWPFTestDataSamples.openSampleDocument("documentProtection_comments_no_password.docx");
        assertFalse(documentWithCommentsEnforcement.isEnforcedFillingFormsProtection());
        assertFalse(documentWithCommentsEnforcement.isEnforcedReadonlyProtection());
        assertTrue(documentWithCommentsEnforcement.isEnforcedCommentsProtection());
        assertFalse(documentWithCommentsEnforcement.isEnforcedTrackedChangesProtection());
        documentWithCommentsEnforcement.close();

        XWPFDocument documentWithTrackedChangesEnforcement = XWPFTestDataSamples.openSampleDocument("documentProtection_trackedChanges_no_password.docx");
        assertFalse(documentWithTrackedChangesEnforcement.isEnforcedFillingFormsProtection());
        assertFalse(documentWithTrackedChangesEnforcement.isEnforcedReadonlyProtection());
        assertFalse(documentWithTrackedChangesEnforcement.isEnforcedCommentsProtection());
        assertTrue(documentWithTrackedChangesEnforcement.isEnforcedTrackedChangesProtection());
        documentWithTrackedChangesEnforcement.close();
    }

    @Test
    void testShouldEnforceForReadOnly() throws IOException {
        //		XWPFDocument document = createDocumentFromSampleFile("test-data/document/documentProtection_no_protection.docx");
        XWPFDocument document = XWPFTestDataSamples.openSampleDocument("documentProtection_no_protection.docx");
        assertFalse(document.isEnforcedReadonlyProtection());

        document.enforceReadonlyProtection();

        assertTrue(document.isEnforcedReadonlyProtection());
        document.close();
    }

    @Test
    void testShouldEnforceForFillingForms() throws IOException {
        XWPFDocument document = XWPFTestDataSamples.openSampleDocument("documentProtection_no_protection.docx");
        assertFalse(document.isEnforcedFillingFormsProtection());

        document.enforceFillingFormsProtection();

        assertTrue(document.isEnforcedFillingFormsProtection());
        document.close();
    }

    @Test
    void testShouldEnforceForComments() throws IOException {
        XWPFDocument document = XWPFTestDataSamples.openSampleDocument("documentProtection_no_protection.docx");
        assertFalse(document.isEnforcedCommentsProtection());

        document.enforceCommentsProtection();

        assertTrue(document.isEnforcedCommentsProtection());
        document.close();
    }

    @Test
    void testShouldEnforceForTrackedChanges() throws IOException {
        XWPFDocument document = XWPFTestDataSamples.openSampleDocument("documentProtection_no_protection.docx");
        assertFalse(document.isEnforcedTrackedChangesProtection());

        document.enforceTrackedChangesProtection();

        assertTrue(document.isEnforcedTrackedChangesProtection());
        document.close();
    }

    @Test
    void testShouldUnsetEnforcement() throws IOException {
        XWPFDocument document = XWPFTestDataSamples.openSampleDocument("documentProtection_readonly_no_password.docx");
        assertTrue(document.isEnforcedReadonlyProtection());

        document.removeProtectionEnforcement();

        assertFalse(document.isEnforcedReadonlyProtection());
        document.close();
    }

    @Test
    void testIntegration() throws IOException {
        XWPFDocument doc1 = new XWPFDocument();

        XWPFParagraph p1 = doc1.createParagraph();

        XWPFRun r1 = p1.createRun();
        r1.setText("Lorem ipsum dolor sit amet.");
        doc1.enforceCommentsProtection();

        File tempFile = TempFile.createTempFile("documentProtectionFile", ".docx");
        FileOutputStream out = new FileOutputStream(tempFile);

        doc1.write(out);
        out.close();

        FileInputStream inputStream = new FileInputStream(tempFile);
        XWPFDocument doc2 = new XWPFDocument(inputStream);
        inputStream.close();

        assertTrue(doc2.isEnforcedCommentsProtection());
        doc2.close();
        doc1.close();
    }

    @Test
    void testUpdateFields() throws IOException {
        XWPFDocument doc = new XWPFDocument();
        assertFalse(doc.isEnforcedUpdateFields());
        doc.enforceUpdateFields();
        assertTrue(doc.isEnforcedUpdateFields());
        doc.close();
    }

    @Test
    void bug56076_read() throws IOException {
        // test legacy xored-hashed password
        assertEquals("64CEED7E", CryptoFunctions.xorHashPassword("Example"));
        // check leading 0
        assertEquals("0005CB00", CryptoFunctions.xorHashPassword("34579"));

        // test document write protection with password
        XWPFDocument document = XWPFTestDataSamples.openSampleDocument("bug56076.docx");
        boolean isValid = document.validateProtectionPassword("Example");
        assertTrue(isValid);
        document.close();
    }

    @Test
    void bug56076_write() throws IOException {
        // test document write protection with password
        XWPFDocument doc1 = new XWPFDocument();
        doc1.enforceCommentsProtection("Example", HashAlgorithm.sha512);
        XWPFDocument doc2 = XWPFTestDataSamples.writeOutAndReadBack(doc1);
        doc1.close();
        boolean isValid = doc2.validateProtectionPassword("Example");
        assertTrue(isValid);
        doc2.close();
    }
}