Merge pull request #3195 from Alfresco/MNT-23926_add_sevenpass_dod_5220.22-M_ags_deletion

[MNT-23926] Added Seven Pass algorithm for deletion

amps/ags/rm-community/rm-community-repo/config/alfresco/module/org_alfresco_module_rm/content-context.xml

@@ -33,5 +33,8 @@
 
    <!-- content cleanser -->
    <bean id="contentCleanser.522022M" class="org.alfresco.module.org_alfresco_module_rm.content.cleanser.ContentCleanser522022M"/>
+   
+    <!-- content cleanser -->
+   <bean id="contentCleanser.SevenPass" class="org.alfresco.module.org_alfresco_module_rm.content.cleanser.ContentCleanserSevenPass"/>
 
 </beans>

amps/ags/rm-community/rm-community-repo/source/java/org/alfresco/module/org_alfresco_module_rm/content/cleanser/ContentCleanserSevenPass.java

@@ -0,0 +1,51 @@
+/*
+ * #%L
+ * Alfresco Records Management Module
+ * %%
+ * Copyright (C) 2005 - 2025 Alfresco Software Limited
+ * %%
+ * This file is part of the Alfresco software.
+ * -
+ * If the software was purchased under a paid Alfresco license, the terms of
+ * the paid license agreement will prevail.  Otherwise, the software is
+ * provided under the following open source license terms:
+ * -
+ * Alfresco is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ * -
+ * Alfresco is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Lesser General Public License for more details.
+ * -
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with Alfresco. If not, see <http://www.gnu.org/licenses/>.
+ * #L%
+ */
+
+package org.alfresco.module.org_alfresco_module_rm.content.cleanser;
+
+import java.io.File;
+
+/**
+ * DoD 5220-22M Seven Pass data cleansing implementation.
+ * 
+ */
+public class ContentCleanserSevenPass extends ContentCleanser522022M
+{
+    /**
+     * @see org.alfresco.module.org_alfresco_module_rm.content.cleanser.ContentCleanser#cleanse(java.io.File)
+     */
+    @Override
+    public void cleanse(File file)
+    {
+        super.cleanse(file);
+        overwrite(file, overwriteZeros);
+        overwrite(file, overwriteZeros);
+        overwrite(file, overwriteOnes);
+        overwrite(file, overwriteRandom);
+
+    }
+}

amps/ags/rm-community/rm-community-repo/unit-test/java/org/alfresco/module/org_alfresco_module_rm/content/cleanser/ContentCleanserSevenPassUnitTest.java

@@ -0,0 +1,100 @@
+/*
+ * #%L
+ * Alfresco Records Management Module
+ * %%
+ * Copyright (C) 2005 - 2025 Alfresco Software Limited
+ * %%
+ * This file is part of the Alfresco software.
+ * -
+ * If the software was purchased under a paid Alfresco license, the terms of
+ * the paid license agreement will prevail.  Otherwise, the software is
+ * provided under the following open source license terms:
+ * -
+ * Alfresco is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ * -
+ * Alfresco is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Lesser General Public License for more details.
+ * -
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with Alfresco. If not, see <http://www.gnu.org/licenses/>.
+ * #L%
+ */
+package org.alfresco.module.org_alfresco_module_rm.content.cleanser;
+
+import static org.mockito.Mockito.times;
+import static org.mockito.Mockito.verify;
+import static org.mockito.Mockito.when;
+
+import java.io.File;
+
+import org.junit.Test;
+import org.mockito.InjectMocks;
+import org.mockito.Mock;
+import org.mockito.Spy;
+
+import org.alfresco.module.org_alfresco_module_rm.test.util.BaseUnitTest;
+import org.alfresco.service.cmr.repository.ContentIOException;
+
+/**
+ * Eager content store cleaner unit test.
+ * 
+ */
+public class ContentCleanserSevenPassUnitTest extends BaseUnitTest
+{
+    @InjectMocks
+    @Spy
+    private ContentCleanserSevenPass contentCleanserSevenPass = new ContentCleanserSevenPass() 
+    {
+        /** dummy implementations */
+        @Override
+        protected void overwrite(File file, OverwriteOperation overwriteOperation)
+        {
+            // Intentionally left empty
+        }
+    };
+
+    @Mock
+    private File mockedFile;
+
+    /**
+     * Given that a file exists When I cleanse it Then the content is overwritten
+     */
+    @Test
+    public void cleanseFile()
+    {
+        when(mockedFile.exists()).thenReturn(true);
+        when(mockedFile.canWrite()).thenReturn(true);
+        contentCleanserSevenPass.cleanse(mockedFile);
+        verify(contentCleanserSevenPass, times(2)).overwrite(mockedFile, contentCleanserSevenPass.overwriteOnes);
+        verify(contentCleanserSevenPass, times(3)).overwrite(mockedFile, contentCleanserSevenPass.overwriteZeros);
+        verify(contentCleanserSevenPass, times(2)).overwrite(mockedFile, contentCleanserSevenPass.overwriteRandom);
+
+    }
+
+    /**
+     * Given that the file does not exist When I cleanse it Then an exception is thrown
+     */
+    @Test(expected = ContentIOException.class)
+    public void fileDoesNotExist()
+    {
+        when(mockedFile.exists()).thenReturn(false);
+        when(mockedFile.canWrite()).thenReturn(true);
+        contentCleanserSevenPass.cleanse(mockedFile);
+    }
+
+    /**
+     * Given that I can not write to the file When I cleanse it Then an exception is thrown
+     */
+    @Test(expected = ContentIOException.class)
+    public void cantWriteToFile()
+    {
+        when(mockedFile.exists()).thenReturn(true);
+        when(mockedFile.canWrite()).thenReturn(false);
+        contentCleanserSevenPass.cleanse(mockedFile);
+    }
+}