Unable to export with error: MalformedURLException: Unknown Protocol: JAR

[mariaWitch]

I have OpenJDK 17.0.5 and python 3 both installed, and I receive the following error when I use it on my file.

ghidra2dwarf.py> Running...

/home/maria/Downloads/ghidra_scripts/ghidra2dwarf.py:34: RuntimeWarning: PyTableCode.call caught a Throwable that is not an Exception:
java.lang.ExceptionInInitializerError
Jython internals might be in a bad state now that can cause deadlocks later on.
See http://bugs.jython.org/issue2536 for details.
  from libdwarf import LibdwarfLibrary
Traceback (most recent call last):
  File "/home/maria/Downloads/ghidra_scripts/ghidra2dwarf.py", line 34, in <module>
    from libdwarf import LibdwarfLibrary
java.lang.ExceptionInInitializerError
	at java.base/java.lang.Class.forName0(Native Method)
	at java.base/java.lang.Class.forName(Class.java:467)
	at org.python.core.Py.loadAndInitClass(Py.java:1160)
	at org.python.core.Py.findClassInternal(Py.java:1095)
	at org.python.core.Py.findClass(Py.java:1129)
	at org.python.core.JavaImportHelper.isJavaClass(JavaImportHelper.java:184)
	at org.python.core.JavaImportHelper.tryAddPackage(JavaImportHelper.java:42)
	at org.python.core.imp.import_next(imp.java:1166)
	at org.python.core.imp.import_module_level(imp.java:1350)
	at org.python.core.imp.importName(imp.java:1528)
	at org.python.core.ImportFunction.__call__(__builtin__.java:1285)
	at org.python.core.PyObject.__call__(PyObject.java:433)
	at org.python.core.__builtin__.__import__(__builtin__.java:1232)
	at org.python.core.imp.importFromAs(imp.java:1620)
	at org.python.core.imp.importFrom(imp.java:1595)
	at org.python.pycode._pyx13.f$0(/home/maria/Downloads/ghidra_scripts/ghidra2dwarf.py:518)
	at org.python.pycode._pyx13.call_function(/home/maria/Downloads/ghidra_scripts/ghidra2dwarf.py)
	at org.python.core.PyTableCode.call(PyTableCode.java:173)
	at org.python.core.PyCode.call(PyCode.java:18)
	at org.python.core.Py.runCode(Py.java:1687)
	at org.python.core.__builtin__.execfile_flags(__builtin__.java:535)
	at org.python.util.PythonInterpreter.execfile(PythonInterpreter.java:287)
	at ghidra.python.GhidraPythonInterpreter.execFile(GhidraPythonInterpreter.java:239)
	at ghidra.python.PythonScriptExecutionThread.run(PythonScriptExecutionThread.java:51)
Caused by: java.lang.RuntimeException: java.net.MalformedURLException: Unknown protocol: jar
	at org.python.core.SyspathJavaLoader.findResource(SyspathJavaLoader.java:152)
	at java.base/java.lang.ClassLoader.getResource(ClassLoader.java:1403)
	at com.sun.jna.Native.extractFromResourcePath(Native.java:1085)
	at com.sun.jna.NativeLibrary.loadLibrary(NativeLibrary.java:276)
	at com.sun.jna.NativeLibrary.getInstance(NativeLibrary.java:455)
	at com.sun.jna.Library$Handler.<init>(Library.java:192)
	at com.sun.jna.Native.loadLibrary(Native.java:646)
	at com.sun.jna.Native.loadLibrary(Native.java:630)
	at libdwarf.LibdwarfLibrary.<clinit>(LibdwarfLibrary.java:13)
	... 24 more
Caused by: java.net.MalformedURLException: Unknown protocol: jar
	at java.base/java.net.URL.<init>(URL.java:708)
	at java.base/java.net.URL.<init>(URL.java:569)
	at java.base/java.net.URL.<init>(URL.java:516)
	at org.python.core.SyspathJavaLoader.findResource(SyspathJavaLoader.java:150)
	... 32 more
Caused by: java.lang.IllegalStateException: Unknown protocol: jar
	at org.apache.felix.framework.URLHandlersStreamHandlerProxy.parseURL(URLHandlersStreamHandlerProxy.java:373)
	at java.base/java.net.URL.<init>(URL.java:703)
	... 35 more
java.lang.ExceptionInInitializerError: java.lang.ExceptionInInitializerError
ghidra2dwarf.py> Finished!
ghidra2dwarf.py> Running...
Traceback (most recent call last):
  File "/home/maria/Downloads/ghidra2dwarf/ghidra2dwarf.py", line 34, in <module>
    from libdwarf import LibdwarfLibrary
java.lang.ExceptionInInitializerError
	at java.base/java.lang.Class.forName0(Native Method)
	at java.base/java.lang.Class.forName(Class.java:467)
	at org.python.core.Py.loadAndInitClass(Py.java:1160)
	at org.python.core.Py.findClassInternal(Py.java:1095)
	at org.python.core.Py.findClassEx(Py.java:1147)
	at org.python.core.packagecache.SysPackageManager.findClass(SysPackageManager.java:233)
	at org.python.core.packagecache.PackageManager.findClass(PackageManager.java:36)
	at org.python.core.packagecache.SysPackageManager.findClass(SysPackageManager.java:221)
	at org.python.core.PyJavaPackage.__findattr_ex__(PyJavaPackage.java:137)
	at org.python.core.PyObject.__findattr__(PyObject.java:902)
	at org.python.core.PyObject.__findattr__(PyObject.java:889)
	at org.python.core.imp.ensureFromList(imp.java:1484)
	at org.python.core.imp.ensureFromList(imp.java:1449)
	at org.python.core.imp.import_module_level(imp.java:1377)
	at org.python.core.imp.importName(imp.java:1528)
	at org.python.core.ImportFunction.__call__(__builtin__.java:1285)
	at org.python.core.PyObject.__call__(PyObject.java:433)
	at org.python.core.__builtin__.__import__(__builtin__.java:1232)
	at org.python.core.imp.importFromAs(imp.java:1620)
	at org.python.core.imp.importFrom(imp.java:1595)
	at org.python.pycode._pyx20.f$0(/home/maria/Downloads/ghidra2dwarf/ghidra2dwarf.py:518)
	at org.python.pycode._pyx20.call_function(/home/maria/Downloads/ghidra2dwarf/ghidra2dwarf.py)
	at org.python.core.PyTableCode.call(PyTableCode.java:173)
	at org.python.core.PyCode.call(PyCode.java:18)
	at org.python.core.Py.runCode(Py.java:1687)
	at org.python.core.__builtin__.execfile_flags(__builtin__.java:535)
	at org.python.util.PythonInterpreter.execfile(PythonInterpreter.java:287)
	at ghidra.python.GhidraPythonInterpreter.execFile(GhidraPythonInterpreter.java:239)
	at ghidra.python.PythonScriptExecutionThread.run(PythonScriptExecutionThread.java:51)
Caused by: java.lang.RuntimeException: java.net.MalformedURLException: Unknown protocol: jar
	at org.python.core.SyspathJavaLoader.findResource(SyspathJavaLoader.java:152)
	at java.base/java.lang.ClassLoader.getResource(ClassLoader.java:1403)
	at com.sun.jna.Native.extractFromResourcePath(Native.java:1085)
	at com.sun.jna.NativeLibrary.loadLibrary(NativeLibrary.java:276)
	at com.sun.jna.NativeLibrary.getInstance(NativeLibrary.java:455)
	at com.sun.jna.Library$Handler.<init>(Library.java:192)
	at com.sun.jna.Native.loadLibrary(Native.java:646)
	at com.sun.jna.Native.loadLibrary(Native.java:630)
	at libdwarf.LibdwarfLibrary.<clinit>(LibdwarfLibrary.java:13)
	... 29 more
Caused by: java.net.MalformedURLException: Unknown protocol: jar
	at java.base/java.net.URL.<init>(URL.java:708)
	at java.base/java.net.URL.<init>(URL.java:569)
	at java.base/java.net.URL.<init>(URL.java:516)
	at org.python.core.SyspathJavaLoader.findResource(SyspathJavaLoader.java:150)
	... 37 more
Caused by: java.lang.IllegalStateException: Unknown protocol: jar
	at org.apache.felix.framework.URLHandlersStreamHandlerProxy.parseURL(URLHandlersStreamHandlerProxy.java:373)
	at java.base/java.net.URL.<init>(URL.java:703)
	... 40 more
java.lang.ExceptionInInitializerError: java.lang.ExceptionInInitializerError

[mariaWitch]

ping @meowmeowxw @nneonneo @NextLight

[nneonneo]

Duplicate of #17. I don't really understand what's happening here; I see some scattered references to a similar issue elsewhere online, but I cannot replicate this locally. It's odd that we have it happening on both Linux (which I presume you're using) and Windows (#17). I'd be interested to know what jar you're using, etc.

[mariaWitch]

So I haven't tried this in a while, but the last time I recall, this was on ghidra 10.1.2, and I used the latest release of ghidra2dwarf. And yes I am using Linux.
Doing some quick inspections on the environment show that the following openjdks are installed.
java-1.11.0-openjdk-amd64 1111 /usr/lib/jvm/java-1.11.0-openjdk-amd64
java-1.17.0-openjdk-amd64 1711 /usr/lib/jvm/java-1.17.0-openjdk-amd64
java-1.8.0-openjdk-amd64 1081 /usr/lib/jvm/java-1.8.0-openjdk-amd64

The system is running Ubuntu 22.04, and is running the 6.2.1 linux kernel.

[mariaWitch]

@nneonneo
If you have any specific information that you would like me to collect about my setup I can do that for you.
Also what version of OpenJDK are you using?

[nneonneo]

I guess I'd like to know how you're running Ghidra (e.g. how is it packaged?), and which JDK you're actually running Ghidra with.

I'm on macOS, with the following Java:

$ java -version
openjdk version "17.0.7" 2023-04-18
OpenJDK Runtime Environment GraalVM CE 22.3.2 (build 17.0.7+7-jvmci-22.3-b18)
OpenJDK 64-Bit Server VM GraalVM CE 22.3.2 (build 17.0.7+7-jvmci-22.3-b18, mixed mode, sharing)

[mariaWitch]

It's packaged like any other ghidra release. I don't exactly know what you are asking for me with that. I run it with the ghidraRun script.
What version of Ghidra are you testing on? An older version of Ghidra may have a different version of jython, when I open up the python interpreter in Ghidra, this is what it says.

Python Interpreter for Ghidra
Based on Jython version 2.7.2 (v2.7.2:925a3cc3b49d, Mar 21 2020, 10:03:58)
[OpenJDK 64-Bit Server VM (Private Build)]
Press 'F1' for usage instructions

[nneonneo]

In your Jython interpreter in Ghidra, can you post the output of “import sys; print sys.path”?

[mariaWitch]

Here's what the output was:

['/home/maria/.ghidra/.ghidra_10.1.2_PUBLIC/dev/jython_cachedir/python-src', 
'/home/maria/Downloads/ghidra_10.1.2_PUBLIC_20220125/ghidra_10.1.2_PUBLIC/Ghidra/Features/Python/data/jython-2.7.2/Lib', 
'/home/maria/Downloads/ghidra_10.1.2_PUBLIC_20220125/ghidra_10.1.2_PUBLIC/Ghidra/Features/Python/lib/jython-standalone-2.7.2.jar/Lib', 
'__classpath__', 
'__pyclasspath__/', 
'/home/maria/Downloads/ghidra_10.1.2_PUBLIC_20220125/ghidra_10.1.2_PUBLIC/Ghidra/Features/Python/data/jython-2.7.2/Lib/site-packages', 
'/home/maria/Downloads/ghidra_10.1.2_PUBLIC_20220125/ghidra_10.1.2_PUBLIC/Ghidra/Processors/DATA/ghidra_scripts',
 '/home/maria/Downloads/ghidra2dwarf',
 '/home/maria/Downloads/ghidra_10.1.2_PUBLIC_20220125/ghidra_10.1.2_PUBLIC/Ghidra/Features/Decompiler/ghidra_scripts',
 '/home/maria/Downloads/ghidra_10.1.2_PUBLIC_20220125/ghidra_10.1.2_PUBLIC/Ghidra/Features/FunctionID/ghidra_scripts',
 '/home/maria/Downloads/ghidra_10.1.2_PUBLIC_20220125/ghidra_10.1.2_PUBLIC/Ghidra/Features/GnuDemangler/ghidra_scripts', 
'/home/maria/Downloads/ghidra_10.1.2_PUBLIC_20220125/ghidra_10.1.2_PUBLIC/Ghidra/Debug/Debugger-agent-dbgmodel-traceloader/ghidra_scripts', 
'/home/maria/Downloads/ghidra_10.1.2_PUBLIC_20220125/ghidra_10.1.2_PUBLIC/Ghidra/Features/FileFormats/ghidra_scripts', 
'/home/maria/.ghidra/.ghidra_10.1.2_PUBLIC/Extensions/ghidra-xbe/ghidra_scripts',
 '/home/maria/Downloads/ghidra_10.1.2_PUBLIC_20220125/ghidra_10.1.2_PUBLIC/Ghidra/Debug/Debugger/ghidra_scripts',
 '/home/maria/Downloads/ghidra_10.1.2_PUBLIC_20220125/ghidra_10.1.2_PUBLIC/Ghidra/Features/Base/ghidra_scripts', 
'/home/maria/Downloads/ghidra_10.1.2_PUBLIC_20220125/ghidra_10.1.2_PUBLIC/Ghidra/Processors/PIC/ghidra_scripts', 
'/home/maria/Downloads/ghidra_10.1.2_PUBLIC_20220125/ghidra_10.1.2_PUBLIC/Ghidra/Processors/8051/ghidra_scripts', 
'/home/maria/.ghidra/.ghidra_10.1.2_PUBLIC/Extensions/retsync/ghidra_scripts', 
'/home/maria/Downloads/ghidra_10.1.2_PUBLIC_20220125/ghidra_10.1.2_PUBLIC/Ghidra/Features/Python/ghidra_scripts', 
'/home/maria/.ghidra/.ghidra_10.1.2_PUBLIC/Extensions/kaiju/ghidra_scripts', 
'/home/maria/Downloads/ghidra_10.1.2_PUBLIC_20220125/ghidra_10.1.2_PUBLIC/Ghidra/Features/VersionTracking/ghidra_scripts', 
'/home/maria/Downloads/ghidra_scripts', 
'/home/maria/Downloads/ghidra_10.1.2_PUBLIC_20220125/ghidra_10.1.2_PUBLIC/Ghidra/Features/MicrosoftCodeAnalyzer/ghidra_scripts', 
'/home/maria/.ghidra/.ghidra_10.1.2_PUBLIC/Extensions/Ghidra-Cpp-Class-Analyzer/ghidra_scripts', 
'/home/maria/Downloads/ghidra_10.1.2_PUBLIC_20220125/ghidra_10.1.2_PUBLIC/Ghidra/Features/BytePatterns/ghidra_scripts', 
'/home/maria/.ghidra/.ghidra_10.1.2_PUBLIC/osgi/compiled-bundles', 
'/home/maria/.ghidra/.ghidra_10.1.2_PUBLIC/osgi/felixcache']

[nneonneo]

10.1.2 is a bit old. What happens with e.g. 10.3?

Have you tried using a clean install with no extensions? Move or rename /home/maria/.ghidra so it starts from a clean state without migrating any settings, add just ghidra2dwarf to the script path, and see if the problem occurs then.