feat(bridge): implement encrypted credential storage and add test client

Author: yiwang

Cargo.lock

@@ -15,6 +15,8 @@ tarpc = { version = "0.37.0", features = ["tokio1", "serde-transport"] }
 tokio-serde = { version = "0.9", features = ["json"] }
 futures = "0.3"
 tokio-util = { version = "0.7", features = ["codec", "compat"] }
+clap = { version = "4.5.60", features = ["derive"] }
+tracing-subscriber = { workspace = true, features = ["env-filter"] }
 
 [target.'cfg(unix)'.dependencies]
 nix = { version = "0.29", features = ["socket", "uio", "user"] }

crates/bridge/Cargo.toml

@@ -0,0 +1,46 @@
+use clap::Parser;
+use localgpt_bridge::connect;
+use tarpc::context;
+
+#[derive(Parser)]
+#[command(name = "test-bridge")]
+struct Cli {
+    #[arg(short, long)]
+    socket: String,
+
+    #[arg(short, long)]
+    bridge_id: String,
+}
+
+#[tokio::main]
+async fn main() -> anyhow::Result<()> {
+    // Initialize logging
+    tracing_subscriber::fmt()
+        .with_env_filter("info")
+        .init();
+
+    let cli = Cli::parse();
+    
+    tracing::info!("Connecting to bridge socket at: {}", cli.socket);
+    
+    // Connect to Bridge
+    let client = connect(&cli.socket).await?;
+    
+    // Request credentials
+    tracing::info!("Requesting credentials for: {}", cli.bridge_id);
+    match client.get_credentials(context::current(), cli.bridge_id.clone()).await? {
+        Ok(secret) => {
+            tracing::info!("Successfully retrieved credentials!");
+            tracing::info!("Secret length: {} bytes", secret.len());
+            if let Ok(s) = String::from_utf8(secret) {
+                tracing::info!("Secret content (utf8): {}", s);
+            }
+        },
+        Err(e) => {
+            tracing::error!("Failed to retrieve credentials: {}", e);
+            std::process::exit(1);
+        }
+    }
+
+    Ok(())
+}

crates/bridge/src/bin/test_client.rs

@@ -75,6 +75,7 @@ sha2 = "0.10"
 hmac = "0.12"
 localgpt-bridge = { version = "0.1.0", path = "../bridge" }
 tarpc = { version = "0.37.0", features = ["tokio1", "serde-transport"] }
+chacha20poly1305 = "0.10.1"
 
 [target.'cfg(target_os = "linux")'.build-dependencies]
 cc = "1"