Catch PermissionError when testing for dependencies

ofrak_core/ofrak/core/apk.py

@@ -3,6 +3,7 @@
 import pathlib
 import sys
 import tempfile
+import logging
 from subprocess import CalledProcessError
 from dataclasses import dataclass
 
@@ -21,6 +22,8 @@
 from ofrak.core.magic import Magic, MagicMimeIdentifier
 from ofrak_type.range import Range
 
+LOGGER = logging.getLogger(__name__)
+
 
 APKTOOL = ComponentExternalTool("apktool", "https://ibotpeaches.github.io/Apktool/", "-version")
 JAVA = ComponentExternalTool(
@@ -71,6 +74,9 @@ async def is_tool_installed(self) -> bool:
             returncode = await proc.wait()
         except FileNotFoundError:
             return False
+        except PermissionError:
+            LOGGER.warning("Encountered PermissionError while searching PATH for java.")
+            return False
 
         return 0 == returncode
 

ofrak_core/ofrak/core/squashfs.py

@@ -37,6 +37,9 @@ async def is_tool_installed(self) -> bool:
             stdout, stderr = await proc.communicate()
         except FileNotFoundError:
             return False
+        except PermissionError:
+            LOGGER.warning("Encountered PermissionError while searching PATH for unsquashfs.")
+            return False
 
         if 0 != proc.returncode:
             return False

ofrak_core/ofrak/core/strings_analyzer.py

@@ -1,5 +1,6 @@
 import asyncio
 import tempfile
+import logging
 from dataclasses import dataclass
 from typing import Dict, Optional
 
@@ -8,6 +9,8 @@
 from ofrak.model.component_model import ComponentConfig, ComponentExternalTool
 from ofrak.model.resource_model import ResourceAttributes
 
+LOGGER = logging.getLogger(__name__)
+
 
 @dataclass
 class StringsAnalyzerConfig(ComponentConfig):
@@ -45,6 +48,9 @@ async def is_tool_installed(self) -> bool:
             await proc.wait()
         except FileNotFoundError:
             return False
+        except PermissionError:
+            LOGGER.warning("Encountered PermissionError while searching PATH for strings command.")
+            return False
 
         return True
 

ofrak_core/ofrak/model/component_model.py

@@ -1,4 +1,5 @@
 import asyncio
+import logging
 from collections import defaultdict
 from dataclasses import dataclass, field
 from typing import Dict, List, Optional, Set, Type, TypeVar
@@ -11,6 +12,9 @@
 CLIENT_COMPONENT_VERSION = -1
 
 
+LOGGER = logging.getLogger(__name__)
+
+
 @dataclass
 class ComponentConfig:
     """
@@ -67,6 +71,9 @@ async def is_tool_installed(self) -> bool:
             returncode = await proc.wait()
         except FileNotFoundError:
             return False
+        except PermissionError:
+            LOGGER.warning(f"Encountered PermissionError while searching PATH for {self.tool}.")
+            return False
 
         return 0 == returncode