Add initial parser for ADB state in Dumpsys (#547)

* Add initial parser for ADB dumpsys

* Add ADBState tests and support for AndroidQF and
check-adb

* Handle case where ADB is not available in device dumpsys

tests/android/test_artifact_dumpsys_adb.py

@@ -0,0 +1,31 @@
+# Mobile Verification Toolkit (MVT)
+# Copyright (c) 2021-2023 The MVT Authors.
+# Use of this software is governed by the MVT License 1.1 that can be found at
+#   https://license.mvt.re/1.1/
+
+from mvt.android.artifacts.dumpsys_adb import DumpsysADBArtifact
+
+from ..utils import get_artifact
+
+
+class TestDumpsysADBArtifact:
+    def test_parsing(self):
+        da_adb = DumpsysADBArtifact()
+        file = get_artifact("android_data/dumpsys_adb.txt")
+        with open(file, "rb") as f:
+            data = f.read()
+
+        assert len(da_adb.results) == 0
+        da_adb.parse(data)
+
+        assert len(da_adb.results) == 1
+        adb_data = da_adb.results[0]
+        assert "user_keys" in adb_data
+        assert len(adb_data["user_keys"]) == 1
+
+        # Check key and fingerprint parsed successfully.
+        user_key = adb_data["user_keys"][0]
+        assert (
+            user_key["fingerprint"] == "F0:A1:3D:8C:B3:F4:7B:09:9F:EE:8B:D8:38:2E:BD:C6"
+        )
+        assert user_key["user"] == "user@linux"