adding infra to load settings from file

client/protector/Cargo.lock

@@ -2,6 +2,112 @@
 # It is not intended for manual editing.
 version = 4
 
+[[package]]
+name = "itoa"
+version = "1.0.15"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4a5f13b858c8d314ee3e8f639011f7ccefe71f97f96e50151fb991f267928e2c"
+
+[[package]]
+name = "memchr"
+version = "2.7.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f52b00d39961fc5b2736ea853c9cc86238e165017a493d1d5c8eac6bdc4cc273"
+
+[[package]]
+name = "once_cell"
+version = "1.21.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "42f5e15c9953c5e4ccceeb2e7382a716482c34515315f7b03532b8b4e8393d2d"
+
+[[package]]
+name = "proc-macro2"
+version = "1.0.103"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5ee95bc4ef87b8d5ba32e8b7714ccc834865276eab0aed5c9958d00ec45f49e8"
+dependencies = [
+ "unicode-ident",
+]
+
 [[package]]
 name = "protector"
 version = "0.1.0"
+dependencies = [
+ "once_cell",
+ "serde",
+ "serde_json",
+]
+
+[[package]]
+name = "quote"
+version = "1.0.41"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ce25767e7b499d1b604768e7cde645d14cc8584231ea6b295e9c9eb22c02e1d1"
+dependencies = [
+ "proc-macro2",
+]
+
+[[package]]
+name = "ryu"
+version = "1.0.20"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "28d3b2b1366ec20994f1fd18c3c594f05c5dd4bc44d8bb0c1c632c8d6829481f"
+
+[[package]]
+name = "serde"
+version = "1.0.228"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9a8e94ea7f378bd32cbbd37198a4a91436180c5bb472411e48b5ec2e2124ae9e"
+dependencies = [
+ "serde_core",
+]
+
+[[package]]
+name = "serde_core"
+version = "1.0.228"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "41d385c7d4ca58e59fc732af25c3983b67ac852c1a25000afe1175de458b67ad"
+dependencies = [
+ "serde_derive",
+]
+
+[[package]]
+name = "serde_derive"
+version = "1.0.228"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d540f220d3187173da220f885ab66608367b6574e925011a9353e4badda91d79"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
+[[package]]
+name = "serde_json"
+version = "1.0.145"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "402a6f66d8c709116cf22f558eab210f5a50187f702eb4d7e5ef38d9a7f1c79c"
+dependencies = [
+ "itoa",
+ "memchr",
+ "ryu",
+ "serde",
+ "serde_core",
+]
+
+[[package]]
+name = "syn"
+version = "2.0.108"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "da58917d35242480a05c2897064da0a80589a2a0476c9a3f2fdc83b53502e917"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "unicode-ident",
+]
+
+[[package]]
+name = "unicode-ident"
+version = "1.0.22"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9312f7c4f6ff9069b165498234ce8be658059c6728633667c526e27dc2cf1df5"

client/protector/Cargo.toml

@@ -4,3 +4,6 @@ version = "0.1.0"
 edition = "2024"
 
 [dependencies]
+once_cell = "1.19"
+serde = "1.0"
+serde_json = "1.0"

client/protector/src/main.rs

@@ -1,3 +1,28 @@
+//protector client 
+
+#![allow(unused_parens)] // do not warn about unused parentheses
+
+mod settings;
+use settings::settings as set;
+
+//const SETTINGS_FILE: &str = "/etc/protector/conf/protector.conf";
+const DEBUG: bool = true;
+//only debug
+const SETTINGS_FILE: &str = "protector.conf";
+
 fn main() {
-    println!("Hello, world!");
+	println!("Starting Protector Client");
+	println!("Loading settings from conf file");
+	if(!set::load_settings(SETTINGS_FILE)){
+		println!("error reading config file\nexiting...");
+		std::process::exit(3);
+	}
+	if(DEBUG){	
+		let b = set::get_settings_value_str("server_ip");
+		let c = set::get_settings_value_int("server_port");
+		let d = set::get_settings_value_str("server_secret");
+		let e = set::get_settings_value_str("client_secret");
+		println!("Server ip is {} and port is {}.\nAnd server_secret is {} and client_secret is {}",b,c,d,e);
+	}
+	println!("Finished, exiting...");
 }

client/protector/src/settings/mod.rs

@@ -0,0 +1 @@
+pub mod settings; 

client/protector/src/settings/settings.rs

@@ -0,0 +1,76 @@
+use std::fs;
+use std::sync::RwLock;
+use once_cell::sync::Lazy;
+
+pub struct Settings {
+    pub server_ip: String,
+    pub server_port: i64,
+    pub client_secret: String,
+    pub server_secret: String,
+}
+
+pub static SETTINGS: Lazy<RwLock<Settings>> = Lazy::new(|| {
+    RwLock::new(Settings {
+        server_ip: String::new(),
+        server_port: 0,
+	client_secret: String::new(),
+	server_secret: String::new(),
+    })
+});
+
+pub fn load_settings(path: &str) -> bool {
+    let contents = match fs::read_to_string(path) {
+        Ok(c) => c,
+        Err(_) => return false, //file error
+    };
+
+    let mut settings = SETTINGS.write().unwrap();
+
+    for line in contents.lines() {
+        let line = line.trim();
+        if (line.is_empty() || line.starts_with('#') || line.starts_with("//") || line.starts_with("[")) {
+            continue; //skip comments
+        }
+
+        let (key, value) = match line.split_once(':') {
+            Some(kv) => kv,
+            None => return false, // malformed line, should be name: value
+        };
+
+        let key = key.trim();
+        let value = value.trim();
+
+        match key { //can be used with a lot more settings key&values
+            "server_ip" => settings.server_ip = value.to_string(),
+	    "client_secret" => settings.client_secret = value.to_string(),
+	    "server_secret" => settings.server_secret = value.to_string(),
+            "server_port" => {
+                match value.parse::<i64>() {
+                    Ok(port) => settings.server_port = port,
+                    Err(_) => return false, // invalid port number
+                }
+            }
+            _ => continue, //return false, // unknown key
+        }
+    }
+
+    return true;
+}
+
+pub fn get_settings_value_int(name: &str) -> i64 {
+	let settings = SETTINGS.read().unwrap();
+	match name{
+		"server_port" => return settings.server_port,
+		_ => return 0,
+	}
+}
+
+pub fn get_settings_value_str(name: &str) -> String {
+	let settings = SETTINGS.read().unwrap();
+	match name{
+		"server_ip" => return settings.server_ip.clone(),
+		"server_secret" => return settings.server_secret.clone(),
+		"client_secret" => return settings.client_secret.clone(),
+		_ => return "err_not_found".to_string(),
+	}
+}