don't assume that scripts are Java, fixes #2562

Ghidra/Features/Base/src/main/java/ghidra/app/script/GhidraScriptProvider.java

@@ -133,4 +133,19 @@ public abstract class GhidraScriptProvider
 	protected void writeBody(PrintWriter writer) {
 		writer.println(getCommentCharacter() + "TODO Add User Code Here");
 	}
+
+	/**
+	 * Fixup a script name for searching in script directories.
+	 *
+	 * <p>This method is part of a poorly specified behavior that is due for future amendment, 
+	 * see {@link GhidraScriptUtil#fixupName(String)}.
+	 * 
+	 * @param scriptName the name of the script, must end with this provider's extension
+	 * @return a (relative) file path to the corresponding script
+	 */
+	@Deprecated
+	protected String fixupName(String scriptName) {
+		return scriptName;
+	}
+
 }

Ghidra/Features/Base/src/main/java/ghidra/app/script/GhidraScriptUtil.java

@@ -28,6 +28,7 @@ import generic.jar.ResourceFile;
 import ghidra.app.plugin.core.osgi.BundleHost;
 import ghidra.app.plugin.core.osgi.OSGiException;
 import ghidra.app.plugin.core.script.GhidraScriptMgrPlugin;
+import ghidra.app.util.headless.HeadlessAnalyzer;
 import ghidra.framework.Application;
 import ghidra.util.Msg;
 import ghidra.util.classfinder.ClassSearcher;
@@ -139,8 +140,7 @@ public class GhidraScriptUtil {
 		}
 		catch (IOException e) {
 			Msg.error(GhidraScriptUtil.class,
-				"Failed to find script in any script directory: " + sourceFile.toString(),
+				"Failed to find script in any script directory: " + sourceFile.toString(), e);
-				e);
 		}
 		return null;
 	}
@@ -293,14 +293,7 @@ public class GhidraScriptUtil {
 	 * @return the Ghidra script provider
 	 */
 	public static GhidraScriptProvider getProvider(ResourceFile scriptFile) {
-		String scriptFileName = scriptFile.getName().toLowerCase();
+		return findProvider(scriptFile.getName());
-
-		for (GhidraScriptProvider provider : getProviders()) {
-			if (scriptFileName.endsWith(provider.getExtension().toLowerCase())) {
-				return provider;
-			}
-		}
-		return null;
 	}
 
 	/**
@@ -310,13 +303,23 @@ public class GhidraScriptUtil {
 	 * @return true if a provider exists that can process the specified file
 	 */
 	public static boolean hasScriptProvider(ResourceFile scriptFile) {
-		String scriptFileName = scriptFile.getName().toLowerCase();
+		return findProvider(scriptFile.getName()) != null;
+	}
+
+	/**
+	 * Find the provider whose extension matches the given filename extension.
+	 * 
+	 * @param fileName name of script file
+	 * @return the first matching provider or null if no provider matches
+	 */
+	private static GhidraScriptProvider findProvider(String fileName) {
+		fileName = fileName.toLowerCase();
 		for (GhidraScriptProvider provider : getProviders()) {
-			if (scriptFileName.endsWith(provider.getExtension().toLowerCase())) {
+			if (fileName.endsWith(provider.getExtension().toLowerCase())) {
-				return true;
+				return provider;
 			}
 		}
-		return false;
+		return null;
 	}
 
 	/**
@@ -362,31 +365,35 @@ public class GhidraScriptUtil {
 	}
 
 	/**
-	 * Fixup name issues, such as package parts in the name and inner class names.
+	 * Fix script name issues for searching in script directories.
+	 * If no provider can be identified, Java is assumed.
 	 * 
-	 * <p>This method can handle names with or without '.java' at the end; names with 
+	 * <p>This method is part of a poorly specified behavior that is due for future amendment.
-	 * '$' (inner classes) and names with '.' characters for package separators
+	 * 
+	 * <p>It is used by {@link GhidraScript#runScript(String)} methods, 
+	 * {@link #createNewScript(String, String, ResourceFile, List)}, and by {@link HeadlessAnalyzer} for 
+	 * {@code preScript} and {@code postScript}.  The intent was to allow some freedom in how a user specifies
+	 * a script in two ways: 1) if the extension is omitted ".java" is assumed and 2) if a Java class name is
+	 * given it's converted to a relative path.
 	 *  
 	 * @param name the name of the script
-	 * @return the name as a '.java' file path (with '/'s and not '.'s)
+	 * @return the name as a file path
 	 */
+	@Deprecated
 	static String fixupName(String name) {
-		if (name.endsWith(".java")) {
+		GhidraScriptProvider provider = findProvider(name);
-			name = name.substring(0, name.length() - 5);
+		// assume Java if no provider matched
+		if (provider == null) {
+			name = name + ".java";
+			provider = findProvider(".java");
 		}
-
+		return provider.fixupName(name);
-		String path = name.replace('.', '/');
-		int innerClassIndex = path.indexOf('$');
-		if (innerClassIndex != -1) {
-			path = path.substring(0, innerClassIndex);
-		}
-		return path + ".java";
 	}
 
 	static ResourceFile findScriptFileInPaths(Collection<ResourceFile> scriptDirectories,
-			String filename) {
+			String name) {
 
-		String validatedName = fixupName(filename);
+		String validatedName = fixupName(name);
 
 		for (ResourceFile resourceFile : scriptDirectories) {
 			if (resourceFile.isDirectory()) {

Ghidra/Features/Base/src/main/java/ghidra/app/script/JavaScriptProvider.java

@@ -164,4 +164,29 @@ public class JavaScriptProvider extends GhidraScriptProvider {
 		return "//";
 	}
 
+	/**
+	 *
+	 * Fix script name for search in script directories, such as Java package parts in the name and inner class names.
+	 *
+	 * <p>This method can handle names with '$' (inner classes) and names with '.' 
+	 * characters for package separators
+	 *
+	 * <p>It is part of a poorly specified behavior that is due for future amendment, 
+	 * see {@link GhidraScriptUtil#fixupName(String)}.
+	 *
+	 * @param scriptName the name of the script
+	 * @return the name as a '.java' file path (with '/'s and not '.'s)
+	 */
+	@Override
+	protected String fixupName(String scriptName) {
+		scriptName = scriptName.substring(0, scriptName.length() - 5);
+
+		String path = scriptName.replace('.', '/');
+		int innerClassIndex = path.indexOf('$');
+		if (innerClassIndex != -1) {
+			path = path.substring(0, innerClassIndex);
+		}
+		return path + ".java";
+	}
+
 }

Ghidra/Test/IntegrationTest/src/test.slow/java/ghidra/app/script/GhidraScriptUtilTest.java

@@ -15,14 +15,23 @@
  */
 package ghidra.app.script;
 
-import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.*;
 
+import org.junit.Before;
 import org.junit.Test;
 
 import generic.test.AbstractGenericTest;
+import ghidra.util.classfinder.ClassSearcher;
+import ghidra.util.exception.CancelledException;
+import ghidra.util.task.ConsoleTaskMonitor;
 
 public class GhidraScriptUtilTest extends AbstractGenericTest {
 
+	@Before
+	public void setup() throws CancelledException {
+		ClassSearcher.search(false, new ConsoleTaskMonitor());
+	}
+
 	@Test
 	public void fixupName_WithExtension() {
 		String input = "Bob.java";
@@ -58,4 +67,11 @@ public class GhidraScriptUtilTest extends AbstractGenericTest {
 		String input = "a.b.c.Bob$InnerClass";
 		assertEquals(GhidraScriptUtil.fixupName(input), "a/b/c/Bob.java");
 	}
+
+	@Test
+	public void fixupName_Python() {
+		String input = "Bob.py";
+		assertEquals(GhidraScriptUtil.fixupName(input), "Bob.py");
+	}
+
 }