From 0b84ee367283e52de4c4d19f8e2d0ac90729f257 Mon Sep 17 00:00:00 2001
From: Florian Esser <fe@wetransform.to>
Date: Wed, 24 Apr 2024 16:41:00 +0200
Subject: [PATCH] feat: add binding to service provider for use in Groovy
 script

Add an additional binding for the Service Provider to Groovy scripts.

ING-4265
---
 .../plugin.xml                                |   7 ++
 .../core/service/DelegateServiceProvider.java |  44 ++++++++
 .../cst/functions/groovy/GroovyConstants.java |   5 +
 .../functions/groovy/internal/GroovyUtil.java |   4 +
 .../plugin.xml                                |   1 +
 ...mboldt.util.service.provider.delegate.exsd | 102 ++++++++++++++++++
 .../RestrictiveGroovyInterceptor.java         |  39 +++++++
 7 files changed, 202 insertions(+)
 create mode 100644 common/plugins/eu.esdihumboldt.hale.common.core/src/eu/esdihumboldt/hale/common/core/service/DelegateServiceProvider.java
 create mode 100644 util/plugins/eu.esdihumboldt.util.groovy.sandbox/schema/eu.esdihumboldt.util.service.provider.delegate.exsd

diff --git a/common/plugins/eu.esdihumboldt.hale.common.core/plugin.xml b/common/plugins/eu.esdihumboldt.hale.common.core/plugin.xml
index a68c08c8ea..a8ca5d0f76 100644
--- a/common/plugins/eu.esdihumboldt.hale.common.core/plugin.xml
+++ b/common/plugins/eu.esdihumboldt.hale.common.core/plugin.xml
@@ -190,6 +190,13 @@
             id="eu.esdihumboldt.hale.common.core.qname">
       </alias>
    </extension>
+   <extension
+         point="eu.esdihumboldt.util.service.provider.delegate">
+      <allow
+            allowAll="false"
+            class="eu.esdihumboldthale.hale.common.core.service.DelegateServiceProvider">
+      </allow>
+   </extension>
    <extension
          point="eu.esdihumboldt.util.groovy.meta">
       <metaClass
diff --git a/common/plugins/eu.esdihumboldt.hale.common.core/src/eu/esdihumboldt/hale/common/core/service/DelegateServiceProvider.java b/common/plugins/eu.esdihumboldt.hale.common.core/src/eu/esdihumboldt/hale/common/core/service/DelegateServiceProvider.java
new file mode 100644
index 0000000000..9c5e2df382
--- /dev/null
+++ b/common/plugins/eu.esdihumboldt.hale.common.core/src/eu/esdihumboldt/hale/common/core/service/DelegateServiceProvider.java
@@ -0,0 +1,44 @@
+/*
+ * Copyright (c) 2024 wetransform GmbH
+ * 
+ * All rights reserved. This program and the accompanying materials are made
+ * available 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.
+ * 
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this distribution. If not, see <http://www.gnu.org/licenses/>.
+ * 
+ * Contributors:
+ *     wetransform GmbH <http://www.wetransform.to>
+ */
+
+package eu.esdihumboldt.hale.common.core.service;
+
+/**
+ * A DelegateServiceProvider delegates service requests to an underlying
+ * ServiceProvider. It implements the ServiceProvider interface and forwards
+ * getService calls to the specified underlying ServiceProvider.
+ * 
+ * @author EmanuelaEpure
+ */
+public class DelegateServiceProvider implements ServiceProvider {
+
+	private final ServiceProvider serviceProvider;
+
+	/**
+	 * Constructs a new DelegateServiceProvider with the specified
+	 * ServiceProvider.
+	 * 
+	 * @param serviceProvider the underlying ServiceProvider to delegate to
+	 */
+	public DelegateServiceProvider(ServiceProvider serviceProvider) {
+		this.serviceProvider = serviceProvider;
+	}
+
+	@Override
+	public <T> T getService(Class<T> serviceInterface) {
+		return serviceProvider.getService(serviceInterface);
+	}
+
+}
diff --git a/cst/plugins/eu.esdihumboldt.cst.functions.groovy/src/eu/esdihumboldt/cst/functions/groovy/GroovyConstants.java b/cst/plugins/eu.esdihumboldt.cst.functions.groovy/src/eu/esdihumboldt/cst/functions/groovy/GroovyConstants.java
index 3c293ab165..4f0200bb57 100644
--- a/cst/plugins/eu.esdihumboldt.cst.functions.groovy/src/eu/esdihumboldt/cst/functions/groovy/GroovyConstants.java
+++ b/cst/plugins/eu.esdihumboldt.cst.functions.groovy/src/eu/esdihumboldt/cst/functions/groovy/GroovyConstants.java
@@ -69,6 +69,11 @@ public interface GroovyConstants {
 	 */
 	public static final String BINDING_INSTANCE_INDEX = "_instanceIndex";
 
+	/**
+	 * Name of the service provider in the binding.
+	 */
+	public static final String BINDING_SERVICE_PROVIDER = "_serviceProvider";
+
 	/**
 	 * Name of the helper functions accessor.
 	 */
diff --git a/cst/plugins/eu.esdihumboldt.cst.functions.groovy/src/eu/esdihumboldt/cst/functions/groovy/internal/GroovyUtil.java b/cst/plugins/eu.esdihumboldt.cst.functions.groovy/src/eu/esdihumboldt/cst/functions/groovy/internal/GroovyUtil.java
index 66107c00a4..a32c27ccf5 100644
--- a/cst/plugins/eu.esdihumboldt.cst.functions.groovy/src/eu/esdihumboldt/cst/functions/groovy/internal/GroovyUtil.java
+++ b/cst/plugins/eu.esdihumboldt.cst.functions.groovy/src/eu/esdihumboldt/cst/functions/groovy/internal/GroovyUtil.java
@@ -43,6 +43,7 @@
 import eu.esdihumboldt.hale.common.core.io.Text;
 import eu.esdihumboldt.hale.common.core.io.project.ProjectInfoService;
 import eu.esdihumboldt.hale.common.core.report.SimpleLog;
+import eu.esdihumboldt.hale.common.core.service.DelegateServiceProvider;
 import eu.esdihumboldt.hale.common.instance.groovy.InstanceBuilder;
 import eu.esdihumboldt.hale.common.instance.index.InstanceIndexService;
 import eu.esdihumboldt.hale.common.instance.index.spatial.SpatialIndexService;
@@ -305,6 +306,9 @@ public static Binding createBinding(InstanceBuilder builder, Cell cell, Cell typ
 		binding.setVariable(BINDING_INSTANCE_INDEX,
 				executionContext.getService(InstanceIndexService.class));
 
+		binding.setVariable(BINDING_SERVICE_PROVIDER,
+				new DelegateServiceProvider(executionContext));
+
 		return binding;
 	}
 }
diff --git a/util/plugins/eu.esdihumboldt.util.groovy.sandbox/plugin.xml b/util/plugins/eu.esdihumboldt.util.groovy.sandbox/plugin.xml
index 64c1c129ef..a1adb497ed 100644
--- a/util/plugins/eu.esdihumboldt.util.groovy.sandbox/plugin.xml
+++ b/util/plugins/eu.esdihumboldt.util.groovy.sandbox/plugin.xml
@@ -2,4 +2,5 @@
 <?eclipse version="3.4"?>
 <plugin>
    <extension-point id="eu.esdihumboldt.util.groovy.sandbox" name="Groovy Sandbox restriction configuration" schema="schema/eu.esdihumboldt.util.groovy.sandbox.exsd"/>
+   <extension-point id="eu.esdihumboldt.util.service.provider.delegate" name="Service Provider Delegate" schema="schema/eu.esdihumboldt.util.service.provider.delegate.exsd"/>
 </plugin>
diff --git a/util/plugins/eu.esdihumboldt.util.groovy.sandbox/schema/eu.esdihumboldt.util.service.provider.delegate.exsd b/util/plugins/eu.esdihumboldt.util.groovy.sandbox/schema/eu.esdihumboldt.util.service.provider.delegate.exsd
new file mode 100644
index 0000000000..702034d5be
--- /dev/null
+++ b/util/plugins/eu.esdihumboldt.util.groovy.sandbox/schema/eu.esdihumboldt.util.service.provider.delegate.exsd
@@ -0,0 +1,102 @@
+<?xml version='1.0' encoding='UTF-8'?>
+<!-- Schema file written by PDE -->
+<schema targetNamespace="eu.esdihumboldt.util.groovy.sandbox" xmlns="http://www.w3.org/2001/XMLSchema">
+<annotation>
+      <appinfo>
+         <meta.schema plugin="eu.esdihumboldt.util.groovy.sandbox" id="eu.esdihumboldt.util.service.provider.delegate" name="Service Provider Delegate"/>
+      </appinfo>
+      <documentation>
+         [Enter description of this extension point.]
+      </documentation>
+   </annotation>
+
+   <element name="extension">
+      <annotation>
+         <appinfo>
+            <meta.element />
+         </appinfo>
+      </annotation>
+      <complexType>
+         <choice minOccurs="1" maxOccurs="unbounded">
+            <element ref="delegate"/>
+         </choice>
+         <attribute name="point" type="string" use="required">
+            <annotation>
+               <documentation>
+                  
+               </documentation>
+            </annotation>
+         </attribute>
+         <attribute name="id" type="string">
+            <annotation>
+               <documentation>
+                  
+               </documentation>
+            </annotation>
+         </attribute>
+         <attribute name="name" type="string">
+            <annotation>
+               <documentation>
+                  
+               </documentation>
+               <appinfo>
+                  <meta.attribute translatable="true"/>
+               </appinfo>
+            </annotation>
+         </attribute>
+      </complexType>
+   </element>
+
+   <element name="delegate">
+      <complexType>
+         <attribute name="class" type="string" use="required">
+            <annotation>
+               <documentation>
+                  
+               </documentation>
+               <appinfo>
+                  <meta.attribute kind="java" basedOn="eu.esdihumboldt.hale.common.core.service.DelegateServiceProvider:"/>
+               </appinfo>
+            </annotation>
+         </attribute>
+      </complexType>
+   </element>
+
+   <annotation>
+      <appinfo>
+         <meta.section type="since"/>
+      </appinfo>
+      <documentation>
+         [Enter the first release in which this extension point appears.]
+      </documentation>
+   </annotation>
+
+   <annotation>
+      <appinfo>
+         <meta.section type="examples"/>
+      </appinfo>
+      <documentation>
+         [Enter extension point usage example here.]
+      </documentation>
+   </annotation>
+
+   <annotation>
+      <appinfo>
+         <meta.section type="apiinfo"/>
+      </appinfo>
+      <documentation>
+         [Enter API information here.]
+      </documentation>
+   </annotation>
+
+   <annotation>
+      <appinfo>
+         <meta.section type="implementation"/>
+      </appinfo>
+      <documentation>
+         [Enter information about supplied implementation of this extension point.]
+      </documentation>
+   </annotation>
+
+
+</schema>
diff --git a/util/plugins/eu.esdihumboldt.util.groovy.sandbox/src/eu/esdihumboldt/util/groovy/sandbox/internal/RestrictiveGroovyInterceptor.java b/util/plugins/eu.esdihumboldt.util.groovy.sandbox/src/eu/esdihumboldt/util/groovy/sandbox/internal/RestrictiveGroovyInterceptor.java
index 3aa23e30b1..fe5050055d 100644
--- a/util/plugins/eu.esdihumboldt.util.groovy.sandbox/src/eu/esdihumboldt/util/groovy/sandbox/internal/RestrictiveGroovyInterceptor.java
+++ b/util/plugins/eu.esdihumboldt.util.groovy.sandbox/src/eu/esdihumboldt/util/groovy/sandbox/internal/RestrictiveGroovyInterceptor.java
@@ -53,8 +53,13 @@
 
 import org.codehaus.groovy.runtime.GStringImpl;
 import org.codehaus.groovy.runtime.InvokerHelper;
+import org.eclipse.core.runtime.IConfigurationElement;
+import org.eclipse.core.runtime.IExtension;
+import org.eclipse.core.runtime.IExtensionPoint;
+import org.eclipse.core.runtime.Platform;
 import org.kohsuke.groovy.sandbox.GroovyInterceptor;
 
+import de.fhg.igd.eclipse.util.extension.ExtensionUtil;
 import eu.esdihumboldt.util.groovy.sandbox.GroovyRestrictionException;
 import groovy.lang.Closure;
 import groovy.lang.GString;
@@ -107,6 +112,11 @@ public class RestrictiveGroovyInterceptor extends GroovyInterceptor {
 	 */
 	private static final Set<String> disallowedClosureWriteProperties = new HashSet<>();
 
+	/**
+	 * The extension point identifier.
+	 */
+	public static final String EXTENSION_ID = "eu.esdihumboldt.util.service.provider.delegate";
+
 	/**
 	 * Allowed packages.
 	 */
@@ -170,6 +180,7 @@ public class RestrictiveGroovyInterceptor extends GroovyInterceptor {
 		// Binding classes
 		allowedClasses.add(Timestamp.class);
 		allowedClasses.add(java.sql.Date.class);
+		addAllowedClassesForID(EXTENSION_ID);
 
 		// Number formatting
 		allowedClasses.add(NumberFormat.class);
@@ -206,6 +217,34 @@ public class RestrictiveGroovyInterceptor extends GroovyInterceptor {
 		disallowedClosureWriteProperties.add("directive");
 	}
 
+	/**
+	 * add allowed classes from the extension point ID
+	 * 
+	 * @param extension_point ID
+	 */
+	private static void addAllowedClassesForID(String extension_point) {
+		// Get the extension point
+		IExtensionPoint extensionPoint = Platform.getExtensionRegistry()
+				.getExtensionPoint(extension_point);
+
+		// Get all extensions contributed to the extension point
+		IExtension[] extensions = extensionPoint.getExtensions();
+		for (IExtension extension : extensions) {
+			// Get all configuration elements of the extension
+			IConfigurationElement[] configElements = extension.getConfigurationElements();
+			for (IConfigurationElement configElement : configElements) {
+				try {
+					for (IConfigurationElement element : configElement.getChildren("delegate")) {
+						Class<?> loadedClass = ExtensionUtil.loadClass(element, "class");
+						allowedClasses.add(loadedClass);
+					}
+				} catch (Exception e) {
+					// Handle any exceptions
+				}
+			}
+		}
+	}
+
 	/**
 	 * AllowedPackage saves information to allow the use of all classes with a
 	 * given prefix.