refactor: move library implementations into modules

senbei-android-engine/src/lib.rs

@@ -2,31 +2,13 @@
 
 mod error;
 mod extract;
+mod probe;
 mod report;
 mod stage1;
 mod stream;
 
 pub use error::Error;
 pub use extract::{ExtractOptions, extract_stage2};
+pub use probe::is_protected_libil2cpp;
 pub use report::ExtractionReport;
 pub use stage1::{DEFAULT_CIPHER_CONSTANT, DEFAULT_OUTER_SIZE};
-
-/// Return whether `data` has the protected AArch64 Stage 1 section layout.
-///
-/// This is a cheap, read-only probe used by folder mode to distinguish the
-/// protected target from ordinary Unity libraries before invoking extraction.
-#[must_use]
-pub fn is_protected_libil2cpp(data: &[u8]) -> bool {
-    if !stage1::looks_protected(data) {
-        return false;
-    }
-    let Ok(stage1) = stage1::inspect(
-        data,
-        std::path::Path::new("<probe>"),
-        DEFAULT_OUTER_SIZE,
-        DEFAULT_CIPHER_CONSTANT,
-    ) else {
-        return false;
-    };
-    senbei_android_crypto::Module9bConfig::parse_embedded(&stage1.plaintext).is_ok()
-}