Ghidra 9.2 bug in "-scriptPath" option of analyzeHeadless

[jimmy-sonny]

I've noticed a strange behaviour in the "-scriptPath" option of Ghidra analyzeHeadless.
Up to Ghidra 9.1.2, analyzeHeadless runs a custom Python script either if it is in the local folder or in the path specified in "-scriptPath".
However, in Ghidra 9.2 analyzeHeadless runs a custom Python script only if it is in the local folder, regardless the path specified in "-scriptPath".

How to reproduce the bug:

• Tested on Ubuntu 19.10
• Create a simple HelloWorld.py script in the ~/Desktop/tmp_ghidra/ folder.
• Run the following commands from the Desktop folder.

It works as expected in version 9.1.2

~/Desktop/ghidra_9.1.2/support/analyzeHeadless ~/Desktop/tmp_ghidra/ Project1 -scriptPath ~/Desktop/tmp_ghidra/ -postScript HelloWorld.py

It does not work. BUG in version 9.2

~/Desktop/ghidra_9.2/support/analyzeHeadless ~/Desktop/tmp_ghidra/ Project1 -scriptPath ~/Desktop/tmp_ghidra/ -postScript HelloWorld.py

...
INFO  HEADLESS Script Paths:
    /home/osboxes/Desktop/ghidra_9.2/Ghidra/Features/Base/ghidra_scripts
    /home/osboxes/Desktop/ghidra_9.2/Ghidra/Features/Decompiler/ghidra_scripts
    /home/osboxes/Desktop/ghidra_9.2/Ghidra/Processors/8051/ghidra_scripts
    /home/osboxes/Desktop/tmp_ghidra
    /home/osboxes/Desktop/ghidra_9.2/Ghidra/Processors/PIC/ghidra_scripts
    /home/osboxes/Desktop/ghidra_9.2/Ghidra/Features/FunctionID/ghidra_scripts
    /home/osboxes/Desktop/ghidra_9.2/Ghidra/Features/GnuDemangler/ghidra_scripts
    /home/osboxes/Desktop/ghidra_9.2/Ghidra/Features/FileFormats/ghidra_scripts
    /home/osboxes/Desktop/ghidra_9.2/Ghidra/Features/VersionTracking/ghidra_scripts
    /home/osboxes/Desktop/ghidra_9.2/Ghidra/Features/BytePatterns/ghidra_scripts
    /home/osboxes/ghidra_scripts
    /home/osboxes/Desktop/ghidra_9.2/Ghidra/Features/Python/ghidra_scripts
    /home/osboxes/Desktop/ghidra_9.2/Ghidra/Processors/DATA/ghidra_scripts (HeadlessAnalyzer)  
ERROR REPORT SCRIPT ERROR: HelloWorld.py : Script not found: HelloWorld.py (HeadlessAnalyzer)  
ERROR Abort due to Headless analyzer error: Invalid script: HelloWorld.py (HeadlessAnalyzer) java.lang.IllegalArgumentException: Invalid script: HelloWorld.py
	at ghidra.app.util.headless.HeadlessAnalyzer.checkScript(HeadlessAnalyzer.java:770)
	at ghidra.app.util.headless.HeadlessAnalyzer.checkScriptsList(HeadlessAnalyzer.java:783)
	at ghidra.app.util.headless.HeadlessAnalyzer.compileScripts(HeadlessAnalyzer.java:817)
	at ghidra.app.util.headless.HeadlessAnalyzer.processLocal(HeadlessAnalyzer.java:406)
	at ghidra.app.util.headless.AnalyzeHeadless.launch(AnalyzeHeadless.java:121)
	at ghidra.GhidraLauncher.main(GhidraLauncher.java:82)

Further tests

Running the commands from ~/Desktop/tmp_ghidra

They work, as expected:

~/Desktop/ghidra_9.2/support/analyzeHeadless ~/Desktop/tmp_ghidra/ Project1 -scriptPath ~/Desktop/tmp_ghidra/ -postScript HelloWorld.py
~/Desktop/ghidra_9.1.2/support/analyzeHeadless ~/Desktop/tmp_ghidra/ Project1 -scriptPath ~/Desktop/tmp_ghidra/ -postScript HelloWorld.py

They work, but the HelloWorld.py is not in the ~/Desktop/ folder:

~/Desktop/ghidra_9.2/support/analyzeHeadless ~/Desktop/tmp_ghidra/ Project1 -scriptPath ~/Desktop/ -postScript HelloWorld.py
~/Desktop/ghidra_9.1.2/support/analyzeHeadless ~/Desktop/tmp_ghidra/ Project1 -scriptPath ~/Desktop/ -postScript HelloWorld.py

Running the commands from ~/Desktop/

They do not work, as expected.

~/Desktop/ghidra_9.2/support/analyzeHeadless ~/Desktop/tmp_ghidra/ Project1 -scriptPath ~/Desktop/ -postScript HelloWorld.py
~/Desktop/ghidra_9.1.2/support/analyzeHeadless ~/Desktop/tmp_ghidra/ Project1 -scriptPath ~/Desktop/ -postScript HelloWorld.py

[meowmeowxw]

I've the same problem :( .

[jpleasu]

I'm sorry -- I never know how much detail to give about progress for tickets. A fix is in the pipeline.

The bug is due to GhidraScriptUtil#fixupName assuming all scripts are Java. A hack to fix this problem would return name if it ends with .py.

[jpleasu]

despite the typo in the commit message (doh), THIS issue is fixed by e4e15cd

[lxyeternal]

I have a project with the following structure:

project_root/
│
├── backend/
│   └── app.py
│
└── preprocess/
    ├── ghidra_analysis.py
    └── ghidra_call_graph.py

• app.py calls ghidra_analysis.py to analyze a given binary file.
• ghidra_analysis.py is responsible for invoking Ghidra and uses ghidra_call_graph.py as a Ghidra script to perform the actual analysis.

Problem:
When app.py calls ghidra_analysis.py, it triggers the following error:

ERROR REPORT SCRIPT ERROR: ghidra_call_graph.py : Script not found: ghidra_call_graph.py (HeadlessAnalyzer)
ERROR Abort due to Headless analyzer error: Invalid script: ghidra_call_graph.py (HeadlessAnalyzer) java.lang.IllegalArgumentException: Invalid script: ghidra_call_graph.py

However, if I move all three files (app.py, ghidra_analysis.py, and ghidra_call_graph.py) into the same directory, the issue does not occur, and everything works as expected.