add platform list of platform api

Cargo.lock

@@ -39,6 +39,7 @@ name = "androscalpel"
 version = "0.1.0"
 dependencies = [
  "adler",
+ "androscalpel_platform_api_list",
  "androscalpel_serializer",
  "anyhow",
  "apk_frauder",
@@ -53,6 +54,10 @@ dependencies = [
  "zip",
 ]
 
+[[package]]
+name = "androscalpel_platform_api_list"
+version = "0.1.0"
+
 [[package]]
 name = "androscalpel_serializer"
 version = "0.1.0"

Cargo.toml

@@ -4,6 +4,6 @@ members = [
     "apk_frauder",
     "androscalpel_serializer",
     "androscalpel_serializer_derive",
-    "androscalpel",
+    "androscalpel", "androscalpel_platform_api_list",
 ]
 resolver = "2"

androscalpel/Cargo.toml

@@ -11,6 +11,7 @@ crate-type = ["cdylib", "lib"]
 [dependencies]
 adler = "1.0.2"
 androscalpel_serializer = { version = "0.1.0", path = "../androscalpel_serializer" }
+androscalpel_platform_api_list = { version = "0.1.0", path = "../androscalpel_platform_api_list", optional = true }
 anyhow = { version = "1.0.75", features = ["backtrace"] }
 apk_frauder = { version = "0.1.0", path = "../apk_frauder" }
 log = "0.4.20"
@@ -26,8 +27,9 @@ zip = {version = "2.2.2", optional = true}
 pretty_assertions = "1.4.1"
 
 [features]
-default = ["code-analysis"]
+default = ["code-analysis", "platform-list"]
 # TODO: need refactoring to https://github.com/PyO3/pyo3/issues/2935#issuecomment-2560930677 or cfg_eval https://github.com/rust-lang/rust/issues/82679
 python = ["pyo3", "pyo3-log"] # Currently not supported
 external-zip-reader = ["zip"]
+platform-list = ["androscalpel_platform_api_list"]
 code-analysis = []

androscalpel/src/class.rs

@@ -383,6 +383,12 @@ impl Class {
         }
         flags
     }
+
+    /// Check if the class is a platform class (ie in the android SDK or a hidden API).
+    #[cfg(feature = "platform-list")]
+    pub fn is_platform_class(&self) -> bool {
+        self.descriptor.is_platform_class()
+    }
 }
 
 impl<V: Visitor> Visitable<V> for Class {

androscalpel/src/dex_id.rs

@@ -5,11 +5,11 @@ use std::cmp::{Ord, Ordering, PartialOrd};
 use std::collections::HashSet;
 use std::hash::Hash;
 
-use anyhow::{Context, anyhow, bail};
+use anyhow::{anyhow, bail, Context};
 #[cfg(feature = "python")]
 use pyo3::prelude::*;
 
-use crate::{DexString, DexValue, Result, Visitable, VisitableMut, Visitor, VisitorMut, scalar::*};
+use crate::{scalar::*, DexString, DexValue, Result, Visitable, VisitableMut, Visitor, VisitorMut};
 use androscalpel_serializer::{StringDataItem, Uleb128};
 
 /// The type of a method. The shorty is formated as described in
@@ -641,6 +641,16 @@ impl IdType {
         types.insert(self.clone());
         types
     }
+
+    /// Check if the class is a platform class (ie in the android SDK or a hidden API).
+    #[cfg(feature = "platform-list")]
+    pub fn is_platform_class(&self) -> bool {
+        match self.try_to_smali() {
+            Ok(smali) => androscalpel_platform_api_list::is_platform_class(&smali),
+            Err(_) => false,
+        }
+    }
+
     // TODO: TESTS
 }
 
@@ -795,6 +805,15 @@ impl IdField {
         fields.insert(self.clone());
         fields
     }
+
+    /// Check if the field is a platform field (ie in the android SDK or a hidden API).
+    #[cfg(feature = "platform-list")]
+    pub fn is_platform_field(&self) -> bool {
+        match self.try_to_smali() {
+            Ok(smali) => androscalpel_platform_api_list::is_platform_field(&smali),
+            Err(_) => false,
+        }
+    }
 }
 
 impl Ord for IdField {
@@ -992,6 +1011,15 @@ impl IdMethod {
         method_ids.insert(self.clone());
         method_ids
     }
+
+    /// Check if the method is a platform method (ie in the android SDK or a hidden API).
+    #[cfg(feature = "platform-list")]
+    pub fn is_platform_method(&self) -> bool {
+        match self.try_to_smali() {
+            Ok(smali) => androscalpel_platform_api_list::is_platform_method(&smali),
+            Err(_) => false,
+        }
+    }
 }
 
 impl Ord for IdMethod {

androscalpel/src/field.rs

@@ -255,6 +255,12 @@ impl Field {
     pub fn has_annotations(&self) -> bool {
         !self.annotations.is_empty()
     }
+
+    /// Check if the field is a platform field (ie in the android SDK or a hidden API).
+    #[cfg(feature = "platform-list")]
+    pub fn is_platform_field(&self) -> bool {
+        self.descriptor.is_platform_field()
+    }
 }
 
 impl<V: Visitor> Visitable<V> for Field {

androscalpel/src/method.rs

@@ -313,6 +313,12 @@ impl Method {
         }
         ins
     }
+
+    /// Check if the method is a platform method (ie in the android SDK or a hidden API).
+    #[cfg(feature = "platform-list")]
+    pub fn is_platform_method(&self) -> bool {
+        self.descriptor.is_platform_method()
+    }
 }
 
 impl<V: Visitor> Visitable<V> for Method {

androscalpel/src/tests/mod.rs

@@ -716,3 +716,11 @@ fn test_hidden_api() {
         }
     }
 }
+
+#[test]
+fn test_is_platform_class() {
+    let activity = Class::new("Landroid/app/Activity;".into()).unwrap();
+    assert!(activity.is_platform_class());
+    let not_platform = Class::new("Landroid/app/NotAPlatformClass;".into()).unwrap();
+    assert!(!not_platform.is_platform_class());
+}

androscalpel_platform_api_list/Cargo.toml

@@ -0,0 +1,9 @@
+[package]
+name = "androscalpel_platform_api_list"
+version = "0.1.0"
+edition = "2024"
+
+[dependencies]
+
+[features]
+sdk34 = []

androscalpel_platform_api_list/README.md

@@ -0,0 +1,5 @@
+# Android Platform API
+
+List of android platform API (API that are either in the android SDK or hidden API).
+
+The list is extracted from the default android emulator the respective SDKs.

androscalpel_platform_api_list/src/lib.rs

@@ -0,0 +1,20 @@
+pub mod sdk34;
+pub use sdk34::*;
+
+// TODO: automate addign a new SDK
+//  TODO: different version with different features
+
+/// Test if the class is part of the platform classes.
+pub fn is_platform_class(smali: &str) -> bool {
+    is_sdk34_platform_class(smali)
+}
+
+/// Test if the field is part of the platform classes.
+pub fn is_platform_field(smali: &str) -> bool {
+    is_sdk34_platform_field(smali)
+}
+
+/// Test if the method is part of the platform classes.
+pub fn is_platform_method(smali: &str) -> bool {
+    is_sdk34_platform_method(smali)
+}

androscalpel_platform_api_list/src/sdk34/mod.rs

@@ -0,0 +1,60 @@
+use std::collections::HashSet;
+use std::sync::LazyLock;
+
+pub static PLATFORM_CLASSES_SDK34: LazyLock<HashSet<&'static str>> =
+    LazyLock::new(|| include_str!("classes.txt").lines().collect());
+pub static PLATFORM_FIELDS_SDK34: LazyLock<HashSet<&'static str>> =
+    LazyLock::new(|| include_str!("fields.txt").lines().collect());
+pub static PLATFORM_METHODS_SDK34: LazyLock<HashSet<&'static str>> =
+    LazyLock::new(|| include_str!("methods.txt").lines().collect());
+
+/// Test if the class is part of the platform classes of the SDK 34.
+pub fn is_sdk34_platform_class(smali: &str) -> bool {
+    PLATFORM_CLASSES_SDK34.contains(smali)
+}
+
+/// Test if the field is part of the platform classes of the SDK 34.
+pub fn is_sdk34_platform_field(smali: &str) -> bool {
+    PLATFORM_FIELDS_SDK34.contains(smali)
+}
+
+/// Test if the method is part of the platform classes of the SDK 34.
+pub fn is_sdk34_platform_method(smali: &str) -> bool {
+    PLATFORM_METHODS_SDK34.contains(smali)
+}
+
+#[cfg(test)]
+mod test {
+    use super::*;
+
+    #[test]
+    fn test_classes_sdk34_set() {
+        assert!(PLATFORM_CLASSES_SDK34
+            .contains("Landroid/accessibilityservice/AccessibilityGestureEvent;"));
+        let s: String = "Landroid/accessibilityservice/AccessibilityInputMethodSession;".into();
+        assert!(PLATFORM_CLASSES_SDK34.contains(s.as_str()));
+    }
+
+    #[test]
+    fn test_fields_sdk34_set() {
+        assert!(PLATFORM_FIELDS_SDK34.contains(
+            "Landroid/accessibilityservice/AccessibilityButtonController$$\
+                ExternalSyntheticLambda1;->f$0:Landroid/accessibilityservice/\
+                AccessibilityButtonController;"
+        ));
+        let s: String = "Landroid/accessibilityservice/AccessibilityButtonController;->mLock:Ljava/lang/Object;".into();
+        assert!(PLATFORM_FIELDS_SDK34.contains(s.as_str()));
+    }
+
+    #[test]
+    fn test_methods_sdk34_set() {
+        assert!(PLATFORM_METHODS_SDK34
+            .contains("Landroid/accessibilityservice/AccessibilityButtonController$$ExternalSyntheticLambda1;->run()V"));
+        let s: String = "Landroid/accessibilityservice/AccessibilityButtonController;->\
+                         $r8$lambda$h5Na0_pkg6ffhlKQPqxrTXannSI(\
+                             Landroid/accessibilityservice/AccessibilityButtonController;\
+                             Landroid/accessibilityservice/AccessibilityButtonController$AccessibilityButtonCallback;\
+                             )V".into();
+        assert!(PLATFORM_METHODS_SDK34.contains(s.as_str()));
+    }
+}