Working template configuration file

src/config.rs

@@ -34,6 +34,7 @@ pub struct GeoIpConfig {
 #[derive(serde::Deserialize)]
 pub struct TemplateConfig {
 	pub template_location: String,
+	pub extra_config: Option<String>,
 }
 
 impl Default for ServerConfig {
@@ -69,6 +70,7 @@ impl Default for TemplateConfig {
 	fn default() -> Self {
 		TemplateConfig {
 			template_location: "templates/".to_string(),
+			extra_config: None,
 		}
 	}
 }

src/main.rs

@@ -72,7 +72,7 @@ struct ServiceSharedState {
 }
 
 #[derive(Parser)]
-#[command(author, version, long_about="None")]
+#[command(author, version, long_about="A web service that tells you your ip-address and more …")]
 struct CliArgs {
 	#[arg(short, long)]
 	config: Option<String>,
@@ -80,6 +80,8 @@ struct CliArgs {
 	listen_on: Option<String>,
 	#[arg(short, long)]
 	templates: Option<String>,
+	#[arg(short,long)]
+	extra_config: Option<String>,
 }
 
 fn match_domain_hidden_list(domain: &String, hidden_list: &Vec<String>) -> bool {
@@ -93,6 +95,23 @@ fn match_domain_hidden_list(domain: &String, hidden_list: &Vec<String>) -> bool
 	return false;
 }
 
+fn read_toml_from_file<T: for<'de> serde::Deserialize<'de>>(path: &String) -> Option<T> {
+	let text = match fs::read_to_string(path) {
+		Ok(t) => t,
+		Err(e) => {
+			println!("Error while reading file '{path}': {e}");
+			return None;
+		}
+	};
+	match toml::from_str(&text) {
+		Ok(t) => Some(t),
+		Err(e) => {
+			println!("Unable to parse file '{path}':\n{e}");
+			return None;
+		}
+	}
+}
+
 #[tokio::main]
 async fn main() {
 	// Parse Command line arguments
@@ -101,26 +120,33 @@ async fn main() {
 	// Read configuration file
 	let config: config::EchoIpServiceConfig = match cli_args.config {
 		Some(config_path) => {
-			let config_text = fs::read_to_string(config_path)
-				.expect("Can't read configuration file!");
-			match toml::from_str(&config_text) {
-				Ok(c) => c,
-				Err(e) => {
-					println!("Unable to parse configuration file:\n{e}");
+			match read_toml_from_file::<config::EchoIpServiceConfig>(&config_path) {
+				Some(c) => c,
+				None => {
+					println!("Could not read confuration file, exiting.");
 					::std::process::exit(1);
 				}
 			}
 		},
 		None => Default::default(),
 	};
-
-	
 	
 	// Initalize Tera templates
 	let mut template_base_dir = (&config.template.template_location).to_owned();
 	if !template_base_dir.ends_with("/") {
 		template_base_dir = template_base_dir + "/";
 	}
+	let template_extra_config = match &cli_args.extra_config {
+		Some(path) => read_toml_from_file(path),
+		None => match &config.template.extra_config {
+			Some(path) => read_toml_from_file(path),
+			None => {
+				println!("Trying to read default template configuration ...");
+				println!("(If this fails that may be ok, depending on your template)");
+				read_toml_from_file(&(template_base_dir.clone()+"extra.toml"))
+			},
+		},
+	};
 	let template_glob = template_base_dir+"*.html";
 	println!("Parsing Templates from '{}' ...", &template_glob);
 	let res = Tera::new((template_glob).as_str());
@@ -174,6 +200,7 @@ async fn main() {
 		ServiceSharedState {
 		templating_engine: templating_engine::Engine{
 			tera: tera,
+			template_config: template_extra_config,
 		},
 		dns_resolver: dns_resolver,
 		asn_db: asn_db,
@@ -196,7 +223,7 @@ async fn main() {
 	println!("Starting Server ...");
 
     axum::Server::bind(&listen_on)
-        .serve(app.into_make_service())
+        .serve(app.into_make_service_with_connect_info::<std::net::SocketAddr>())
         .await
         .unwrap();
 }

src/templating_engine.rs

@@ -11,6 +11,7 @@ use axum::{
 	response::Json,
 };
 use tera::Tera;
+use toml::Table;
 
 use crate::simple_dns;
 use crate::IpResult;
@@ -68,6 +69,7 @@ impl View {
 
 pub struct Engine {
 	pub tera: Tera,
+	pub template_config: Option<Table>,
 }
 
 impl Engine {
@@ -85,6 +87,7 @@ impl Engine {
 				//intented for shared macros
 				context.insert("format", &format.to_string());
 				context.insert("data", &view);
+				context.insert("extra", &self.template_config);
 
 				match self.tera.render(&(template_name+".html"), &context) {
 					Ok(html) => Html(html).into_response(),

templates/extra.toml

@@ -0,0 +1 @@
+site_name="echoip-slatecave"

templates/index.html

@@ -6,6 +6,11 @@
 </head>
 <body>
 	{% set r = data.result %}
+	<header>
+		<nav>
+			<a href="/" class="site-name">{{extra.site_name|default(val="echoip")}}</a>
+		</nav>
+	</header>
 	<h1>Your IP-Address is: {{ data.query.ip }}</h1>
 	<section>
 		<h2>Network Information</h2>