First minimal commit

src/geoparsers/geoip2.rs

@@ -0,0 +1,41 @@
+use ipnet::IpNet;
+use crate::config::NSCConfig; 
+
+/// Enum for declaring GeoSite/IP routing 
+pub enum RouteType {
+    /// GeoSite MMDB type, like `category-ads-all`
+    GeoSite(String),
+    /// Subnet
+    GeoIp(IpNet),   
+}
+
+/// Routing actions
+pub enum RouteAction {
+    Block,
+    Proxy,
+    Direct,
+}
+
+/// Type for declaring the routing rules like: 
+/// ```toml 
+/// [rule]
+/// action = enum RouteAction 
+/// target = enum RouteType 
+///
+/// [rule]
+/// target = "geosite:category-ads-all" 
+/// action = "block" 
+/// ```
+pub struct Rule {
+    pub target: RouteType,
+    pub action: RouteAction,
+}
+
+pub fn parse_ruleset(config: NSCConfig) -> Result<Vec<Rule>, Box<dyn std::error::Error>> {
+    let reader = maxminddb::Reader::open_readfile(config.geo_files[0].clone())?;
+    
+
+    // Ok(())
+    todo!();
+}
+

src/geoparsers/mod.rs

@@ -0,0 +1 @@
+mod geoip2;