sniffing early work

use `tun` crate examope for starters, to map all traffic through tun
virtual interface, in next commits will push these packets to sniffing
module which will deciede further modifications of proxies based by
user's Config.

1 files changed, 25 insertions, 0 deletions

diff --git a/src/startup.rs b/src/startup.rs
new file mode 100644
index 0000000..32ed278
--- /dev/null
+++ b/src/startup.rs
@@ -0,0 +1,25 @@
+// Here we iniitialize systems crucial for nsc
+use std::io::Read;
+
+pub fn init() -> Result<(), Box<dyn std::error::Error + Send + Sync + 'static>> {
+    let mut config = tun::Configuration::default();
+    config
+        .address((10, 0, 0, 9))
+        .netmask((255, 255, 255, 0))
+        .destination((10, 0, 0, 1))
+        .up();
+
+    #[cfg(target_os = "linux")]
+    config.platform_config(|config| {
+        // requiring root privilege to acquire complete functions
+        config.ensure_root_privileges(true);
+    });
+
+    let mut dev = tun::create(&config)?;
+    let mut buf = [0; 4096];
+
+    loop {
+        let amount = dev.read(&mut buf)?;
+        println!("{:?}", &buf[0..amount]);
+    }
+}