loool

.gitignore

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+/target

Cargo.toml

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+[package]
+name = "auth-callback-watcher"
+version = "0.1.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+rocket = "0.5.0"
+log = "0.4.20"
+env_logger = "0.11.1"

Rocket.toml

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+[default]
+port = 7887

src/main.rs

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+#[macro_use]
+extern crate rocket;
+
+#[get("/authenticated/<_..>")]
+fn authenticated(uri: &rocket::http::uri::Origin) -> &'static str {
+    log::error!("AUTHENTICATED: {uri:?}");
+    "authentication successful 🙂"
+}
+#[get("/deauthenticated/<_..>")]
+fn deauthenticated(uri: &rocket::http::uri::Origin) -> &'static str {
+    log::error!("DEAUTHENTICATED: {uri:?}");
+    "deauthentication successful 🙂"
+}
+
+#[launch]
+fn rocket() -> _ {
+    env_logger::builder()
+        .format_module_path(false)
+        .format_timestamp(
+            if std::env::var("LOG_TIMESTAMP").is_ok_and(|v| v == "false") {
+                None
+            } else {
+                Some(env_logger::TimestampPrecision::Seconds)
+            },
+        )
+        .init();
+    rocket::build().mount("/", routes![authenticated, deauthenticated])
+}

tesla-auth-callback-watcher.service

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+[Unit]
+Description=Tesla Auth Callback Watcher
+After=network.target
+StartLimitIntervalSec=0
+
+[Service]
+Type=simple
+Restart=always
+RestartSec=10s
+User=tesla
+Environment="RUST_LOG=error,warn"
+Environment="LOG_TIMESTAMP=false"
+ExecStart=/usr/bin/auth-callback-watcher
+
+[Install]
+WantedBy=multi-user.target