Rename primary_domain to interface_domain, and make it optional

README.md

@@ -89,8 +89,8 @@ service:
   # Domani can serve the domains. All records given must route to this Domani
   # instance.
   #
-  # A CNAME record with the primary_domain of this server is automatically
+  # A CNAME record with the interface_domain of this server is automatically
-  # included.
+  # included, if it's not null itself.
   dns_records:
     #- kind: A
     #  addr: 127.0.0.1
@@ -105,7 +105,9 @@ service:
   # The domain name which will be used to serve the web interface of Domani. If
   # service.http.https_addr is enabled then an HTTPS certificate for this domain
   # will be retrieved automatically.
-  #primary_domain: "localhost"
+  #
+  # This can be set to null to disable the web interface entirely.
+  #interface_domain: "localhost"
 
   #http:
 

config.yml.tpl

@@ -13,7 +13,6 @@ domain:
       public: true
 service:
   passphrase: foobar
-  primary_domain: localhost
   dns_records:
     - kind: A
       addr: 127.0.0.1

src/domain/checker.rs

@@ -32,14 +32,12 @@ pub struct DNSChecker {
     // TODO we should use some kind of connection pool here, I suppose
     client: tokio::sync::Mutex<AsyncClient>,
     token_store: Box<dyn token::Store + Send + Sync>,
-    service_primary_domain: domain::Name,
 }
 
 impl DNSChecker {
     pub async fn new<TokenStore>(
         token_store: TokenStore,
         config: &domain::ConfigDNS,
-        service_primary_domain: domain::Name,
     ) -> Result<Self, unexpected::Error>
     where
         TokenStore: token::Store + Send + Sync + 'static,
@@ -52,7 +50,6 @@ impl DNSChecker {
         Ok(Self {
             token_store: Box::from(token_store),
             client: tokio::sync::Mutex::new(client),
-            service_primary_domain,
         })
     }
 
@@ -111,7 +108,7 @@ impl DNSChecker {
 
         let body = match reqwest::get(format!(
             "http://{}/.well-known/domani-challenge",
-            self.service_primary_domain.as_str()
+            domain.as_str(),
         ))
         .await
         {

src/main.rs

@@ -56,26 +56,25 @@ async fn main() {
             })
         };
 
-        // primary_cname is a CNAME record which points to the primary domain of the service. Since
+        // inteface_cname is a CNAME record which points to the interface domain of the service.
-        // the primary domain _must_ point to the service (otherwise HTTPS wouldn't work) it's
+        // Since the interface domain _must_ point to the service (otherwise it wouldn't work) it's
         // reasonable to assume that a CNAME on any domain would suffice to point that domain to
         // the service.
-        let primary_cname = domani::service::ConfigDNSRecord::CNAME {
+        if let Some(ref interface_domain) = config.service.interface_domain {
-            name: config.service.primary_domain.clone(),
+            let interface_cname = domani::service::ConfigDNSRecord::CNAME {
+                name: interface_domain.clone(),
             };
 
-        let dns_records_have_primary_cname = config
+            let dns_records_have_interface_cname = config
                 .service
                 .dns_records
                 .iter()
-            .any(|r| r == &primary_cname);
+                .any(|r| r == &interface_cname);
 
-        if !dns_records_have_primary_cname {
+            if !dns_records_have_interface_cname {
-            log::info!(
+                log::info!("Adding 'CNAME {interface_domain}' to service.dns_records");
-                "Adding 'CNAME {}' to service.dns_records",
+                config.service.dns_records.push(interface_cname);
-                &config.service.primary_domain
+            }
-            );
-            config.service.dns_records.push(primary_cname);
         }
 
         config
@@ -95,7 +94,6 @@ async fn main() {
     let domain_checker = domani::domain::checker::DNSChecker::new(
         domani::token::MemStore::new(),
         &config.domain.dns,
-        config.service.primary_domain.clone(),
     )
     .await
     .expect("domain checker initialization failed");

src/service/config.rs

@@ -2,8 +2,8 @@ use crate::{domain, service};
 use serde::{Deserialize, Serialize};
 use std::{net, str::FromStr};
 
-fn default_primary_domain() -> domain::Name {
+fn default_interface_domain() -> Option<domain::Name> {
-    domain::Name::from_str("localhost").unwrap()
+    Some(domain::Name::from_str("localhost").unwrap())
 }
 
 #[derive(Serialize, Deserialize, Clone, PartialEq)]
@@ -28,10 +28,13 @@ impl From<ConfigDNSRecord> for domain::checker::DNSRecord {
 pub struct Config {
     pub passphrase: String,
     pub dns_records: Vec<ConfigDNSRecord>,
-    #[serde(default = "default_primary_domain")]
+
-    pub primary_domain: domain::Name,
+    #[serde(default = "default_interface_domain")]
+    pub interface_domain: Option<domain::Name>,
+
     #[serde(default)]
     pub http: service::http::Config,
+
     #[serde(default)]
     pub gemini: service::gemini::Config,
 }

src/service/gemini.rs

@@ -196,11 +196,7 @@ async fn listen(
             .with_cert_resolver(service.cert_resolver.clone()),
     );
 
-    log::info!(
+    log::info!("Listening on gemini://{}", addr);
-        "Listening on gemini://{}:{}",
-        &service.config.primary_domain.clone(),
-        addr,
-    );
 
     let listener = tokio::net::TcpListener::bind(addr)
         .await

src/service/http.rs

@@ -10,7 +10,6 @@ use http::request::Parts;
 use hyper::{Body, Method, Request, Response};
 use serde::{Deserialize, Serialize};
 
-use std::str::FromStr;
 use std::{future, net, sync};
 
 use crate::error::unexpected;
@@ -164,7 +163,7 @@ impl Service {
         match self.domain_manager.get_file(&domain, &path) {
             Ok(f) => self.serve(200, &path, Body::wrap_stream(f)),
             Err(domain::manager::GetFileError::DomainNotFound) => {
-                return self.render_error_page(404, "Domain not found")
+                return self.render_error_page(404, "Unknown domain name")
             }
             Err(domain::manager::GetFileError::FileNotFound) => {
                 self.render_error_page(404, "File not found")
@@ -396,83 +395,7 @@ impl Service {
         self.render_page("/domains.html", Response { domains })
     }
 
-    async fn handle_request(
+    async fn serve_interface(&self, req: Request<Body>) -> Response<Body> {
-        &self,
-        client_ip: net::IpAddr,
-        req: Request<Body>,
-        req_is_https: bool,
-    ) -> Response<Body> {
-        let maybe_host = match (
-            req.headers()
-                .get("Host")
-                .and_then(|v| v.to_str().ok())
-                .map(strip_port),
-            req.uri().host().map(strip_port),
-        ) {
-            (Some(h), _) if h != self.config.primary_domain.as_str() => Some(h),
-            (_, Some(h)) if h != self.config.primary_domain.as_str() => Some(h),
-            _ => None,
-        }
-        .and_then(|h| domain::Name::from_str(h).ok());
-
-        {
-            let path = req.uri().path();
-
-            // Serving acme challenges always takes priority. We serve them from the same store no
-            // matter the domain, presumably they are cryptographically random enough that it doesn't
-            // matter.
-            if req.method() == Method::GET && path.starts_with("/.well-known/acme-challenge/") {
-                let token = path.trim_start_matches("/.well-known/acme-challenge/");
-
-                if let Ok(key) = self.domain_manager.get_acme_http01_challenge_key(token) {
-                    return self.serve(200, "token.txt", key.into());
-                }
-            }
-
-            // Serving domani challenges similarly takes priority.
-            if req.method() == Method::GET && path == "/.well-known/domani-challenge" {
-                if let Some(ref domain) = maybe_host {
-                    match self
-                        .domain_manager
-                        .get_domain_checker_challenge_token(domain)
-                    {
-                        Ok(Some(token)) => return self.serve(200, "token.txt", token.into()),
-                        Ok(None) => return self.render_error_page(404, "Token not found"),
-                        Err(e) => {
-                            return self.internal_error(
-                                format!("failed to get token for domain {}: {e}", domain).as_str(),
-                            )
-                        }
-                    }
-                }
-            }
-        }
-
-        // If a managed domain was given then serve that from its origin or a proxy.
-        if let Some(domain) = maybe_host {
-            if let Some(proxied_domain_config) = self.config.http.proxied_domains.get(&domain) {
-                return service::http::proxy::serve_http_request(
-                    proxied_domain_config,
-                    client_ip,
-                    req,
-                    req_is_https,
-                )
-                .await
-                .unwrap_or_else(|e| {
-                    self.internal_error(
-                        format!(
-                            "serving {domain} via proxy {}: {e}",
-                            proxied_domain_config.url.as_ref()
-                        )
-                        .as_str(),
-                    )
-                });
-            }
-
-            return self.serve_origin(domain, req).await;
-        }
-
-        // Serve main domani site
         let (req, body) = req.into_parts();
         let path = req.uri.path();
 
@@ -509,6 +432,86 @@ impl Service {
             ),
         }
     }
+
+    fn domain_from_req(req: &Request<Body>) -> Option<domain::Name> {
+        let host_header = req
+            .headers()
+            .get("Host")
+            .and_then(|v| v.to_str().ok())
+            .map(strip_port);
+
+        host_header
+            // if host_header isn't present, try the host from the URI
+            .or_else(|| req.uri().host().map(strip_port))
+            .and_then(|h| h.parse().ok())
+    }
+
+    async fn handle_request(
+        &self,
+        client_ip: net::IpAddr,
+        req: Request<Body>,
+        req_is_https: bool,
+    ) -> Response<Body> {
+        let domain = match Self::domain_from_req(&req) {
+            Some(domain) => domain,
+            None => return self.render_error_page(400, "Cannot serve page without domain"),
+        };
+
+        let method = req.method();
+        let path = req.uri().path();
+
+        // Serving acme challenges always takes priority. We serve them from the same store no
+        // matter the domain, presumably they are cryptographically random enough that it doesn't
+        // matter.
+        if method == Method::GET && path.starts_with("/.well-known/acme-challenge/") {
+            let token = path.trim_start_matches("/.well-known/acme-challenge/");
+
+            if let Ok(key) = self.domain_manager.get_acme_http01_challenge_key(token) {
+                return self.serve(200, "token.txt", key.into());
+            }
+        }
+
+        // Serving domani challenges similarly takes priority.
+        if method == Method::GET && path == "/.well-known/domani-challenge" {
+            match self
+                .domain_manager
+                .get_domain_checker_challenge_token(&domain)
+            {
+                Ok(Some(token)) => return self.serve(200, "token.txt", token.into()),
+                Ok(None) => return self.render_error_page(404, "Token not found"),
+                Err(e) => {
+                    return self.internal_error(
+                        format!("failed to get token for domain {}: {e}", domain).as_str(),
+                    )
+                }
+            }
+        }
+
+        if let Some(proxied_domain_config) = self.config.http.proxied_domains.get(&domain) {
+            return service::http::proxy::serve_http_request(
+                proxied_domain_config,
+                client_ip,
+                req,
+                req_is_https,
+            )
+            .await
+            .unwrap_or_else(|e| {
+                self.internal_error(
+                    format!(
+                        "serving {domain} via proxy {}: {e}",
+                        proxied_domain_config.url.as_ref()
+                    )
+                    .as_str(),
+                )
+            });
+        }
+
+        if Some(&domain) == self.config.interface_domain.as_ref() {
+            return self.serve_interface(req).await;
+        }
+
+        self.serve_origin(domain, req).await
+    }
 }
 
 fn strip_port(host: &str) -> &str {

src/service/http/tasks.rs

@@ -13,7 +13,13 @@ pub async fn listen_http(
     canceller: CancellationToken,
 ) -> Result<(), unexpected::Error> {
     let addr = service.config.http.http_addr.clone();
-    let primary_domain = service.config.primary_domain.clone();
+
+    // only used for logging
+    let listen_host = service
+        .config
+        .interface_domain
+        .clone()
+        .map_or(addr.ip().to_string(), |ref d| d.as_str().to_string());
 
     let make_service = hyper::service::make_service_fn(move |conn: &AddrStream| {
         let service = service.clone();
@@ -31,11 +37,7 @@ pub async fn listen_http(
         async move { Ok::<_, convert::Infallible>(hyper_service) }
     });
 
-    log::info!(
+    log::info!("Listening on http://{}:{}", listen_host, addr.port(),);
-        "Listening on http://{}:{}",
-        primary_domain.as_str(),
-        addr.port(),
-    );
     let server = hyper::Server::bind(&addr).serve(make_service);
 
     let graceful = server.with_graceful_shutdown(async {
@@ -51,7 +53,13 @@ pub async fn listen_https(
 ) -> Result<(), unexpected::Error> {
     let cert_resolver = service.cert_resolver.clone();
     let addr = service.config.http.https_addr.unwrap().clone();
-    let primary_domain = service.config.primary_domain.clone();
+
+    // only used for logging
+    let listen_host = service
+        .config
+        .interface_domain
+        .clone()
+        .map_or(addr.ip().to_string(), |ref d| d.as_str().to_string());
 
     let make_service = hyper::service::make_service_fn(move |conn: &TlsStream<AddrStream>| {
         let service = service.clone();
@@ -91,11 +99,7 @@ pub async fn listen_https(
 
     let incoming = hyper::server::accept::from_stream(incoming);
 
-    log::info!(
+    log::info!("Listening on https://{}:{}", listen_host, addr.port());
-        "Listening on https://{}:{}",
-        primary_domain.as_str(),
-        addr.port()
-    );
 
     let server = hyper::Server::builder(incoming).serve(make_service);