make android unit tests and earthly build work

.cargo/config.toml

@@ -1,7 +1,11 @@
 [target.aarch64-unknown-linux-gnu]
-# ar = "aarch64-linux-gnu-ar"
 linker = "aarch64-linux-gnu-gcc"
 
 [target.aarch64-linux-android]
-#ar = "$ANDROID_NDK_HOME/toolchains/llvm/prebuilt/linux-x86_64/bin/aarch64-linux-android-ar" 
-linker = "$ANDROID_NDK_HOME/toolchains/llvm/prebuilt/linux-x86_64/bin/aarch64-linux-android-clang"
+linker = "/Android/Sdk/ndk/22.0.7026061/toolchains/llvm/prebuilt/linux-x86_64/bin/aarch64-linux-android30-clang"
+[target.armv7-linux-androideabi]
+linker = "/Android/Sdk/ndk/22.0.7026061/toolchains/llvm/prebuilt/linux-x86_64/bin/armv7a-linux-androideabi30-clang"
+[target.x86_64-linux-android]
+linker = "/Android/Sdk/ndk/22.0.7026061/toolchains/llvm/prebuilt/linux-x86_64/bin/x86_64-linux-android30-clang"
+[target.i686-linux-android]
+linker = "/Android/Sdk/ndk/22.0.7026061/toolchains/llvm/prebuilt/linux-x86_64/bin/i686-linux-android30-clang"

Earthfile

@@ -43,15 +43,23 @@ deps-rust:
     # WASM
     RUN rustup target add wasm32-unknown-unknown
 
-# Install cross-platform tooling
+# Install Linux cross-platform tooling
 deps-cross:
     FROM +deps-rust
-    RUN apt-get install -y gcc-aarch64-linux-gnu 
+    RUN apt-get install -y gcc-aarch64-linux-gnu curl unzip
 
+# Install android tooling
+deps-android:
+    FROM +deps-cross
+    RUN apt-get install -y openjdk-9-jdk-headless
+    RUN mkdir /Android; mkdir /Android/Sdk
+    RUN curl -o /Android/cmdline-tools.zip https://dl.google.com/android/repository/commandlinetools-linux-7583922_latest.zip
+    RUN cd /Android; unzip /Android/cmdline-tools.zip
+    RUN yes | /Android/cmdline-tools/bin/sdkmanager --sdk_root=/Android/Sdk build-tools\;30.0.3 ndk\;22.0.7026061 cmake\;3.18.1 platform-tools platforms\;android-30
     
 # Install stub secrets daemon for keyring tests
 deps-secretsd:
-    FROM +deps-cross
+    FROM +deps-android
     COPY scripts/earthly/secretsd /secretsd
     RUN pip install -r /secretsd/requirements.txt
     RUN pip install keyring
@@ -64,7 +72,8 @@ deps:
 
 code:
     FROM +deps
-    COPY . .
+    COPY --dir .cargo external files scripts veilid-cli veilid-core veilid-server veilid-wasm Cargo.lock Cargo.toml /veilid
+    WORKDIR /veilid
 
 # Clippy only
 clippy:
@@ -82,6 +91,20 @@ build-linux-arm64:
     RUN cargo build --target aarch64-unknown-linux-gnu --release
     SAVE ARTIFACT ./target/aarch64-unknown-linux-gnu AS LOCAL ./target/artifacts/aarch64-unknown-linux-gnu
 
+build-android:
+    FROM +code
+    WORKDIR /veilid/veilid-core
+    ENV PATH=$PATH:/Android/Sdk/ndk/22.0.7026061/toolchains/llvm/prebuilt/linux-x86_64/bin/
+    RUN cargo build --target aarch64-linux-android --release
+    RUN cargo build --target armv7-linux-androideabi --release
+    RUN cargo build --target i686-linux-android --release
+    RUN cargo build --target x86_64-linux-android --release
+    WORKDIR /veilid
+    SAVE ARTIFACT ./target/aarch64-linux-android AS LOCAL ./target/artifacts/aarch64-linux-android
+    SAVE ARTIFACT ./target/armv7-linux-androideabi AS LOCAL ./target/artifacts/armv7-linux-androideabi
+    SAVE ARTIFACT ./target/i686-linux-android AS LOCAL ./target/artifacts/i686-linux-android
+    SAVE ARTIFACT ./target/x86_64-linux-android AS LOCAL ./target/artifacts/x86_64-linux-android
+
 # Unit tests
 unit-tests-linux-amd64:
     FROM +code

veilid-core/src/intf/native/protected_store.rs

@@ -33,8 +33,14 @@ impl ProtectedStore {
         let c = self.config.get();
         let mut inner = self.inner.lock();
         if !c.protected_store.always_use_insecure_storage {
+            cfg_if! {
+                if #[cfg(target_os = "android")] {
+                    inner.keyring_manager = KeyringManager::new_secure(&c.program_name, intf::native::utils::android::get_android_globals()).ok();
+                } else {
                     inner.keyring_manager = KeyringManager::new_secure(&c.program_name).ok();
                 }
+            }
+        }
         if (c.protected_store.always_use_insecure_storage
             || c.protected_store.allow_insecure_fallback)
             && inner.keyring_manager.is_none()

veilid-core/src/intf/native/utils/android/get_directories.rs

@@ -6,7 +6,7 @@ pub fn get_files_dir() -> String {
     let ag = aglock.as_ref().unwrap();
     let env = ag.vm.attach_current_thread().unwrap();
 
-    with_null_local_frame(env, 64, || {
+    with_null_local_frame(*env, 64, || {
         // context.getFilesDir().getAbsolutePath()
         let file = env
             .call_method(ag.ctx.as_obj(), "getFilesDir", "()Ljava/io/File;", &[])
@@ -30,7 +30,7 @@ pub fn get_cache_dir() -> String {
     let ag = aglock.as_ref().unwrap();
     let env = ag.vm.attach_current_thread().unwrap();
 
-    with_null_local_frame(env, 64, || {
+    with_null_local_frame(*env, 64, || {
         // context.getCacheDir().getAbsolutePath()
         let file = env
             .call_method(ag.ctx.as_obj(), "getCacheDir", "()Ljava/io/File;", &[])
@@ -44,7 +44,7 @@ pub fn get_cache_dir() -> String {
             .unwrap();
 
         let jstrval = env.get_string(JString::from(path)).unwrap();
-        String::from(jstrval.to_string_lossy())
+        Ok(String::from(jstrval.to_string_lossy()))
     })
     .unwrap()
 }

veilid-core/src/intf/native/utils/android/mod.rs

@@ -68,6 +68,15 @@ pub fn veilid_core_setup_android<'a>(
     });
 }
 
+pub fn get_android_globals() -> (JavaVM, GlobalRef) {
+    let globals_locked = ANDROID_GLOBALS.lock();
+    let globals = globals_locked.as_ref().unwrap();
+    let env = globals.vm.attach_current_thread().unwrap();
+    let vm = env.get_java_vm().unwrap();
+    let ctx = globals.ctx.clone();
+    (vm, ctx)
+}
+
 pub fn with_null_local_frame<'b, T, F>(env: JNIEnv<'b>, s: i32, f: F) -> JniResult<T>
 where
     F: FnOnce() -> JniResult<T>,