From 8145ce57cc82a05be7ef6a7453f7137e84af7c67 Mon Sep 17 00:00:00 2001
From: Stefano Pigozzi <me@steffo.eu>
Date: Thu, 14 Nov 2024 04:02:40 +0100
Subject: [PATCH] `webfinger`: Parse query string with `serde` and `axum_extra`

---
 .idea/acrate.iml              |  1 +
 acrate-webfinger/Cargo.toml   |  2 ++
 acrate-webfinger/src/main.rs  |  2 +-
 acrate-webfinger/src/route.rs | 22 +++++++++++++++-------
 4 files changed, 19 insertions(+), 8 deletions(-)

diff --git a/.idea/acrate.iml b/.idea/acrate.iml
index 983a32b..32d223d 100644
--- a/.idea/acrate.iml
+++ b/.idea/acrate.iml
@@ -9,6 +9,7 @@
       <sourceFolder url="file://$MODULE_DIR$/acrate-inbox/src" isTestSource="false" />
       <sourceFolder url="file://$MODULE_DIR$/acrate-nodeinfo/src" isTestSource="false" />
       <sourceFolder url="file://$MODULE_DIR$/acrate-nodeinfo/tests" isTestSource="true" />
+      <sourceFolder url="file://$MODULE_DIR$/acrate-webfinger/src" isTestSource="false" />
       <excludeFolder url="file://$MODULE_DIR$/target" />
     </content>
     <orderEntry type="inheritedJdk" />
diff --git a/acrate-webfinger/Cargo.toml b/acrate-webfinger/Cargo.toml
index 4640b18..5c74e51 100644
--- a/acrate-webfinger/Cargo.toml
+++ b/acrate-webfinger/Cargo.toml
@@ -6,7 +6,9 @@ edition = "2021"
 [dependencies]
 anyhow = "1.0.93"
 axum = "0.7.7"
+axum-extra = { version = "0.9.4", features = ["query"] }
 log = "0.4.22"
 micronfig = "0.3.0"
 pretty_env_logger = "0.5.0"
+serde = { version = "1.0.215", features = ["derive"] }
 tokio = { version = "1.41.1", features = ["macros", "net", "rt-multi-thread"] }
diff --git a/acrate-webfinger/src/main.rs b/acrate-webfinger/src/main.rs
index 8958b4c..cc8ad4d 100644
--- a/acrate-webfinger/src/main.rs
+++ b/acrate-webfinger/src/main.rs
@@ -11,7 +11,7 @@ async fn main() -> anyhow::Result<std::convert::Infallible> {
 
 	log::trace!("Creating Axum router...");
 	let app = axum::Router::new()
-		.route("/inbox", axum::routing::post(route::inbox_handler));
+		.route("/.well-known/webfinger", axum::routing::get(route::webfinger_handler));
 	log::trace!("Axum router created successfully!");
 
 	log::trace!("Creating Tokio listener...");
diff --git a/acrate-webfinger/src/route.rs b/acrate-webfinger/src/route.rs
index ca9ec6b..82a7986 100644
--- a/acrate-webfinger/src/route.rs
+++ b/acrate-webfinger/src/route.rs
@@ -1,8 +1,16 @@
-#[allow(unreachable_code)]
-pub async fn inbox_handler() {
-	todo!("pre-validation hook");
-	todo!("validate signature");
-	todo!("post-validation hook");
-	todo!("database storage");
-	todo!("post-storage hook");
+use axum_extra::extract::Query;
+use serde::Deserialize;
+
+#[derive(Debug, Clone, Deserialize)]
+pub struct WebfingerQuery {
+	pub resource: String,
+	
+	#[serde(default)]
+	pub rel: Vec<String>,
+}
+
+pub async fn webfinger_handler(
+	Query(WebfingerQuery {resource, rel}): Query<WebfingerQuery>
+) {
+	todo!()
 }