Allow users to specify a custom ghidrathon.save path via an environment variable

README.md

@@ -34,6 +34,11 @@ Use the following steps to install Ghidrathon to your Ghidra environment:
 $ python -m pip install -r requirements.txt
 $ python ghidrathon_configure.py <absolute_path_to_ghidra_install_dir>
 ```
+**Note**: If you want to use a custom directory path for the ghidrathon.save file location, set the `GHIDRATHON_SAVE_PATH` environment variable before running ghidrathon_configure.py:
+```
+$ export GHIDRATHON_SAVE_PATH="/path/to/custom/dir" # Linux/MacOS
+$ set GHIDRATHON_SAVE_PATH="C:\path\to\custom\dir"  # Windows
+```
 **Note**: you may be prompted to set an environment variable named `JAVA_HOME`. This should reference the absolute path of the JDK that you have configured for your Ghidra install.
 
 3. Install the Ghidrathon extension (`.zip`) into Ghidra:

util/ghidrathon_configure.py

@@ -6,6 +6,7 @@
 #  is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 # See the License for the specific language governing permissions and limitations under the License.
 
+import os
 import sys
 import json
 import logging
@@ -17,6 +18,7 @@
 SUPPORTED_JEP_VERSION = "4.2.0"
 PYTHON_HOME_DIR_KEY = "home"
 PYTHON_EXECUTABLE_FILE_KEY = "executable"
+GHIDRATHON_SAVE_PATH =  "GHIDRATHON_SAVE_PATH"
 
 logger = logging.getLogger(__name__)
 
@@ -91,7 +93,8 @@ def main(args):
     logger.debug('Using Python home located at "%s".', home_path)
 
     json_: str = json.dumps(ghidrathon_save)
-    save_path: pathlib.Path = install_path / "ghidrathon.save"
+    save_path: pathlib.Path = pathlib.Path(os.environ.get(GHIDRATHON_SAVE_PATH, install_path)) / "ghidrathon.save"
+    logger.debug('Using ghidrathon.save path: "%s"' % save_path)
     try:
         save_path.write_text(json_, encoding="utf-8")
     except Exception as e: