[pitboss] phase 03: Track J.1 + Track L.1 — DESERIALIZE corpus + Java/Python/PHP/Ruby adapters

src/dynamic/framework/adapters/java_deserialize.rs

@@ -0,0 +1,97 @@
+//! Java [`super::super::FrameworkAdapter`] matching deserialization sinks.
+//!
+//! Fires when the function body invokes `ObjectInputStream.readObject`
+//! or `XMLDecoder.readObject` (matched by the last segment of the
+//! callee name — the call graph normaliser drops the receiver).
+
+use crate::dynamic::framework::{FrameworkAdapter, FrameworkBinding};
+use crate::evidence::EntryKind;
+use crate::summary::FuncSummary;
+use crate::symbol::Lang;
+
+pub struct JavaDeserializeAdapter;
+
+const ADAPTER_NAME: &str = "java-deserialize";
+
+fn callee_is_java_deserialize(name: &str) -> bool {
+    let last = name.rsplit_once('.').map(|(_, s)| s).unwrap_or(name);
+    matches!(last, "readObject" | "fromXML" | "deserialize")
+}
+
+impl FrameworkAdapter for JavaDeserializeAdapter {
+    fn name(&self) -> &'static str {
+        ADAPTER_NAME
+    }
+
+    fn lang(&self) -> Lang {
+        Lang::Java
+    }
+
+    fn detect(
+        &self,
+        summary: &FuncSummary,
+        _ast: tree_sitter::Node<'_>,
+        file_bytes: &[u8],
+    ) -> Option<FrameworkBinding> {
+        let matches_call = super::any_callee_matches(summary, callee_is_java_deserialize);
+        let matches_source = file_bytes
+            .windows(b"ObjectInputStream".len())
+            .any(|w| w == b"ObjectInputStream")
+            || file_bytes
+                .windows(b"XMLDecoder".len())
+                .any(|w| w == b"XMLDecoder");
+        if matches_call || matches_source {
+            Some(FrameworkBinding {
+                adapter: ADAPTER_NAME.to_owned(),
+                kind: EntryKind::Function,
+                route: None,
+                request_params: Vec::new(),
+                response_writer: None,
+                middleware: Vec::new(),
+            })
+        } else {
+            None
+        }
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    fn parse_java(src: &[u8]) -> tree_sitter::Tree {
+        let mut parser = tree_sitter::Parser::new();
+        let lang = tree_sitter::Language::from(tree_sitter_java::LANGUAGE);
+        parser.set_language(&lang).unwrap();
+        parser.parse(src, None).unwrap()
+    }
+
+    #[test]
+    fn fires_when_source_imports_object_input_stream() {
+        let src: &[u8] = b"import java.io.ObjectInputStream;\npublic class V { public static void run(byte[] b) {} }\n";
+        let tree = parse_java(src);
+        let summary = FuncSummary {
+            name: "run".into(),
+            ..Default::default()
+        };
+        let binding = JavaDeserializeAdapter
+            .detect(&summary, tree.root_node(), src)
+            .expect("must fire on ObjectInputStream source");
+        assert_eq!(binding.adapter, ADAPTER_NAME);
+        assert_eq!(binding.kind, EntryKind::Function);
+    }
+
+    #[test]
+    fn skips_plain_function() {
+        let src: &[u8] =
+            b"public class V { public static void run(String b) { System.out.println(b); } }\n";
+        let tree = parse_java(src);
+        let summary = FuncSummary {
+            name: "run".into(),
+            ..Default::default()
+        };
+        assert!(JavaDeserializeAdapter
+            .detect(&summary, tree.root_node(), src)
+            .is_none());
+    }
+}