refactor: extract bridge-api and rework IPC data model

Author: Mufanc

Cargo.lock

@@ -31,7 +31,7 @@ run-emulator: build-debug
     adb shell "chmod +x /data/local/tmp/zynx"
     adb shell "(su 0 killall zynx || true) && sleep 1"
     adb shell su 0 setenforce 0
-    adb shell "RUST_LOG=debug RUST_LOG_STYLE=always RUST_BACKTRACE=1 su 0 /data/local/tmp/zynx --cfg-enable-zygisk"
+    adb shell "RUST_LOG=debug RUST_LOG_STYLE=always RUST_BACKTRACE=1 su 0 /data/local/tmp/zynx --cfg-enable-zygisk --cfg-enable-debugger"
 
 setup-ondk:
     @python3 scripts/setup-ondk.py --version {{ONDK_VERSION}}

justfile

@@ -0,0 +1,11 @@
+[package]
+name = "zynx-bridge-api"
+version.workspace = true
+edition.workspace = true
+
+[dependencies]
+anyhow = { workspace = true }
+zynx-bridge-shared = { path = "../bridge-shared" }
+
+[lints]
+workspace = true

src/bridge-api/Cargo.toml

@@ -0,0 +1,15 @@
+use crate::zygote::ProviderBundle;
+use anyhow::Result;
+use zynx_bridge_shared::zygote::{ProviderType, SpecializeArgs};
+
+pub trait ProviderHandler: Send + Sync + 'static {
+    const TYPE: ProviderType;
+
+    fn on_specialize_pre(_args: &mut SpecializeArgs, _bundle: &mut ProviderBundle) -> Result<()> {
+        Ok(())
+    }
+
+    fn on_specialize_post(_args: &SpecializeArgs, _bundle: &mut ProviderBundle) -> Result<()> {
+        Ok(())
+    }
+}

src/bridge-api/src/injector.rs

@@ -0,0 +1,2 @@
+pub mod injector;
+pub mod zygote;

src/bridge-api/src/lib.rs

@@ -0,0 +1,15 @@
+use std::os::fd::OwnedFd;
+use zynx_bridge_shared::zygote::ProviderType;
+
+#[derive(Debug)]
+pub struct Attachment {
+    pub fd: Option<OwnedFd>,
+    pub data: Option<Vec<u8>>,
+}
+
+#[derive(Debug)]
+pub struct ProviderBundle {
+    pub ty: ProviderType,
+    pub attachments: Vec<Attachment>,
+    pub data: Option<Vec<u8>>,
+}

src/bridge-api/src/zygote.rs

@@ -3,9 +3,6 @@ name = "zynx-bridge-shared"
 version.workspace = true
 edition.workspace = true
 
-[features]
-zygisk = []
-
 [dependencies]
 anyhow = { workspace = true }
 bytemuck = { workspace = true }

src/bridge-shared/Cargo.toml

@@ -1,4 +1,3 @@
-pub mod injector;
 pub mod policy;
 pub mod remote_lib;
 pub mod zygote;

src/bridge-shared/src/injector.rs

@@ -1 +1,3 @@
 pub mod debugger;
+pub mod liteloader;
+pub mod zygisk;