Added support for running as a BN plugin

Wrote a wrapper class to run as a background task in the UI. Created a
plugin.json file

__init__.py

@@ -0,0 +1,95 @@
+"""
+Binary Ninja plugin for recovering kernel build configuration settings using BNIL
+"""
+
+import argparse
+import logging
+from binaryninja import (BinaryViewType, BinaryView, PluginCommand,
+                         SaveFileNameField, get_form_input, BackgroundTaskThread)
+
+class RecoverKConfigBackground(BackgroundTaskThread):
+    """Class for running kernel configuration recovery in background
+    """
+
+    def __init__(self, view: BinaryView, outpath: str) -> None:
+        BackgroundTaskThread.__init__(self, 'Recovering Linux kernel configuration', False)
+        self.outpath = outpath
+        self.view = view
+
+    def run(self):
+        """Run analysis task
+        """
+
+        self.view.reanalyze()
+        self.view.update_analysis_and_wait()
+        kconfigr = KConfigRecover(self.view)
+        config = kconfigr.recover()
+        save_kconfig(config, self.outpath)
+        self.progress = ""
+
+def run_from_ui(view: BinaryView) -> None:
+    """Run as a plugin under the UI
+
+    Args:
+      view: Binary view
+    """
+
+    logger = logging.getLogger()
+    logger.setLevel(logging.INFO)
+
+    config_field = SaveFileNameField('Configuration Output Path')
+    get_form_input([config_field], 'Kernel Configuration Recovery Options')
+    outpath = 'generated.config'
+    if config_field.result != '':
+        outpath = config_field.result
+
+    kconfig_task = RecoverKConfigBackground(view, outpath)
+    kconfig_task.start()
+
+def parse_args() -> argparse.Namespace:
+    """Parses command line arguments.
+
+    Returns:
+      Parsed command line arguments.
+    """
+
+    parser = argparse.ArgumentParser()
+    parser.add_argument(
+        'bndb', help='File path to kernel ELF or Binary Ninja database')
+    parser.add_argument(
+        'kconfig', help='File path to save recovered kernel configuration')
+    parser.add_argument('-d',
+                        '--debug',
+                        action='store_true',
+                        help='Enable debug logging')
+    return parser.parse_args()
+
+def run_headless() -> None:
+    """Parse command line arguments and run app.
+    """
+
+    args = parse_args()
+
+    logger = logging.getLogger()
+    if args.debug:
+        logger.setLevel(logging.DEBUG)
+    else:
+        logger.setLevel(logging.INFO)
+
+    logging.info('Opening "%s" and getting view...', args.bndb)
+    view = BinaryViewType.get_view_of_file(args.bndb)
+    logging.info('Running BN analysis, this may take some time...')
+
+    kconfig_task = RecoverKConfigBackground(view, args.kconfig)
+    kconfig_task.start()
+
+if __name__ == '__main__':
+    from kconfig import KConfigRecover, save_kconfig
+    run_headless()
+else:
+    from .kconfig import KConfigRecover, save_kconfig
+    PluginCommand.register(
+        "Recover Linux kernel config",
+        "Analyze Linux kernel binary and recover kernel configuration options",
+        run_from_ui,
+    )

kconfig/recover.py

@@ -68,7 +68,7 @@ class KConfigRecover:
     """Class that uses BN API to attempt to recover kernel configurations.
     """
 
-    def __init__(self, view: BinaryView):
+    def __init__(self, view: BinaryView) -> None:
         self.view = view
         self.helpers = {
             'General Setup': {

plugin.json

@@ -0,0 +1,24 @@
+{
+  "pluginmetadataversion": 2,
+  "name": "BN KConfig Recover",
+  "type": [
+    "helper"
+  ],
+  "api": [
+    "python3"
+  ],
+  "description": "Recover Linux kernel build configurations",
+  "longdescription": "",
+  "license": {
+    "name": "MIT",
+    "text": "Copyright (c) 2022 Brandon Miller\n\nPermission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the \"Software\"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:\n\nThe above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.\n\nTHE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE."
+  },
+  "platforms": [
+    "Darwin",
+    "Linux",
+    "Windows"
+  ],
+  "version": "0.2",
+  "author": "Brandon Miller",
+  "minimumbinaryninjaversion": 3164
+}