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-rw-r--r--src/main.rs44
1 files changed, 34 insertions, 10 deletions
diff --git a/src/main.rs b/src/main.rs
index a6bca8a..c041886 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -4,34 +4,58 @@ use std::net::SocketAddrV4;
use igd::aio::search_gateway;
use igd::PortMappingProtocol;
-struct DiplonatConfig<'a> {
- private_ip: &'a str,
- refresh_time: u16,
- expiration_time: u16
+struct DiplonatConfig {
+ private_ip: String,
+ refresh_time: u32,
+ expiration_time: u32
}
-fn fetch_configuration {
+fn fetch_configuration() -> Result<DiplonatConfig, String> {
let env_private_ip = "DIPLONAT_PRIVATE_IP";
let private_ip = match env::var(env_private_ip) {
Ok(val) => val,
- Err(e) => return println!("Unable to fetch {} environment variable: {}", env_private_ip, e),
+ Err(e) => return Err(format!("unable to fetch environment variable {}: {}", env_private_ip, e)),
};
+ let env_refresh_time = "DIPLONAT_REFRESH_TIME";
+ let refresh_time: u32 = match env::var(env_refresh_time) {
+ Ok(val) => val.parse().unwrap(),
+ Err(e) => return Err(format!("unable to fetch environment variable {}: {}", env_refresh_time,e))
+ };
+
+ let env_expiration_time = "DIPLONAT_EXPIRATION_TIME";
+ let expiration_time: u32 = match env::var(env_expiration_time) {
+ Ok(val) => val.parse().unwrap(),
+ Err(e) => return Err(format!("unable to fetch environment variable {}: {}", env_expiration_time,e))
+ };
+
+ if refresh_time * 2 > expiration_time {
+ return Err(format!("Expiration time (currently: {}s) must be twice bigger than refresh time (currently: {}s)", expiration_time, refresh_time))
+ }
+
+ let config = DiplonatConfig { private_ip: private_ip, refresh_time: refresh_time, expiration_time: expiration_time };
+ println!("\tPrivate IP address: {}", config.private_ip);
+ println!("\tRefresh time: {} seconds", config.refresh_time);
+ println!("\tExpiration time: {} seconds", config.expiration_time);
+ return Ok(config);
}
#[tokio::main]
async fn main() {
+ let config = match fetch_configuration() {
+ Ok(val) => val,
+ Err(e) => return println!("unable to build configuration: {}", e),
+ };
- println!("Private IP address: {}", private_ip);
let gateway = match search_gateway(Default::default()).await {
Ok(g) => g,
Err(err) => return println!("Faild to find IGD: {}", err),
};
- let service = format!("{}:{}", private_ip, 1234);
- let service: SocketAddrV4 = private_ip.parse().expect("Invalid socket address");
- match gateway.add_port(PortMappingProtocol::TCP, 1234, service, 120, "diplonat").await {
+ let service = format!("{}:{}", config.private_ip, 1234);
+ let service: SocketAddrV4 = service.parse().expect("Invalid socket address");
+ match gateway.add_port(PortMappingProtocol::TCP, 1234, service, config.expiration_time, "diplonat").await {
Ok(_) => (),
Err(e) => return println!("Unable to insert port 1234: {}", e),
};