Disable zaps

migrations/2024-04-11-210151_disable_zaps/down.sql

@@ -0,0 +1 @@
+ALTER TABLE app_user DROP COLUMN disabled_zaps;

migrations/2024-04-11-210151_disable_zaps/up.sql

@@ -0,0 +1 @@
+ALTER TABLE app_user ADD COLUMN disabled_zaps BOOLEAN NOT NULL DEFAULT FALSE;

src/db.rs

@@ -29,6 +29,7 @@ pub(crate) trait DBConnection {
         federation_id: String,
         federation_invite_code: String,
     ) -> anyhow::Result<()>;
+    fn disable_user_zaps(&self, user: AppUser) -> anyhow::Result<()>;
     fn get_user_and_increment_counter(&self, name: &str) -> anyhow::Result<Option<AppUser>>;
     fn insert_new_zap(&self, new_zap: Zap) -> anyhow::Result<Zap>;
     fn get_zap_by_id(&self, id: i32) -> anyhow::Result<Option<Zap>>;
@@ -73,6 +74,11 @@ impl DBConnection for PostgresConnection {
         user.update_federation(conn, federation_id, federation_invite_code)
     }
 
+    fn disable_user_zaps(&self, user: AppUser) -> anyhow::Result<()> {
+        let conn = &mut self.db.get()?;
+        user.disable_zaps(conn)
+    }
+
     fn get_pending_invoices(&self) -> anyhow::Result<Vec<Invoice>> {
         let conn = &mut self.db.get()?;
         Invoice::get_by_state(conn, 0)

src/lnurlp.rs

@@ -61,6 +61,12 @@ pub async fn lnurl_callback(
     }
     let user = user.expect("just checked");
 
+    if user.disabled_zaps {
+        return Err(anyhow!(
+            "Internal error: User has disabled their address temporarily"
+        ));
+    }
+
     let amount_msats = match params.amount {
         Some(amt) => amt,
         None => return Err(anyhow!(INVALID_AMT_ERR)),

src/main.rs

@@ -17,9 +17,9 @@ use crate::{
     invoice::handle_pending_invoices,
     mint::{setup_multimint, MultiMintWrapperTrait},
     routes::{
-        change_federation, check_pubkey, check_registration_info, check_username, health_check,
-        lnurl_callback_route, lnurl_verify_route, register_route, root, validate_cors,
-        well_known_lnurlp_route, well_known_nip5_route,
+        change_federation, check_pubkey, check_registration_info, check_username, disable_zaps,
+        health_check, lnurl_callback_route, lnurl_verify_route, register_route, root,
+        validate_cors, well_known_lnurlp_route, well_known_nip5_route,
     },
 };
 
@@ -172,6 +172,7 @@ async fn main() -> anyhow::Result<()> {
         .route("/v1/check-pubkey/:pubkey", get(check_pubkey)) // DEPRECATED for check-registration
         .route("/v1/check-registration", post(check_registration_info))
         .route("/v1/change-federation", post(change_federation))
+        .route("/v1/disable-zaps", post(disable_zaps))
         .route("/v1/register", post(register_route))
         .route("/.well-known/nostr.json", get(well_known_nip5_route))
         .route(

src/models/app_user.rs

@@ -17,6 +17,7 @@ pub struct AppUser {
     pub federation_id: String,
     pub federation_invite_code: String,
     pub invoice_index: i32,
+    pub disabled_zaps: bool,
 }
 
 impl AppUser {
@@ -99,11 +100,21 @@ impl AppUser {
             .set((
                 app_user::federation_id.eq(new_federation_id),
                 app_user::federation_invite_code.eq(new_federation_invite_code),
+                app_user::disabled_zaps.eq(false),
             ))
             .execute(conn)?;
 
         Ok(())
     }
+
+    pub fn disable_zaps(&self, conn: &mut PgConnection) -> anyhow::Result<()> {
+        diesel::update(app_user::table)
+            .filter(app_user::name.eq(&self.name))
+            .set((app_user::disabled_zaps.eq(true),))
+            .execute(conn)?;
+
+        Ok(())
+    }
 }
 
 #[derive(Insertable)]

src/models/schema.rs

@@ -14,6 +14,7 @@ diesel::table! {
         #[max_length = 255]
         federation_invite_code -> Varchar,
         invoice_index -> Int4,
+        disabled_zaps -> Bool,
     }
 }
 

src/register.rs

@@ -50,6 +50,10 @@ pub fn change_user_federation(
         .update_user_federation(user, federation_id, federation_invite_code)
 }
 
+pub fn disable_user_zaps(state: &State, user: AppUser) -> anyhow::Result<()> {
+    state.db.disable_user_zaps(user)
+}
+
 pub fn generate_random_name(state: &State) -> anyhow::Result<String> {
     loop {
         let new_name = Generator::with_naming(names::Name::Numbered)

src/routes.rs

@@ -2,8 +2,8 @@ use crate::{
     lnurlp::{lnurl_callback, verify, well_known_lnurlp},
     nostr::well_known_nip5,
     register::{
-        change_user_federation, check_available, check_registered_pubkey, ensure_added_federation,
-        get_user_by_pubkey, register,
+        change_user_federation, check_available, check_registered_pubkey, disable_user_zaps,
+        ensure_added_federation, get_user_by_pubkey, register,
     },
     State, ALLOWED_LOCALHOST, ALLOWED_ORIGINS, ALLOWED_SUBDOMAIN, API_VERSION,
 };
@@ -25,6 +25,7 @@ use url::Url;
 
 const REGISTRATION_CHECK_EVENT_KIND: Kind = Kind::Custom(93_186);
 const NEW_FEDERATION_EVENT_KIND: Kind = Kind::Custom(93_187);
+const DISABLE_ZAPS_EVENT_KIND: Kind = Kind::Custom(93_188);
 
 #[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
 pub struct LnUrlErrorResponse {
@@ -199,6 +200,57 @@ pub async fn change_federation(
     }
 }
 
+pub async fn disable_zaps(
+    origin: Option<TypedHeader<Origin>>,
+    Extension(state): Extension<State>,
+    Json(event): Json<Event>,
+) -> Result<(), (StatusCode, String)> {
+    validate_cors(origin)?;
+
+    let pubkey = event.author();
+    info!("disable_zaps: {}", pubkey);
+
+    if event.verify().is_err() && event.kind() != DISABLE_ZAPS_EVENT_KIND {
+        error!("error in disable_zaps: bad event");
+        return Err((StatusCode::BAD_REQUEST, "Bad event".to_string()));
+    }
+
+    // make sure it was made recently
+    let created_at = event.created_at();
+    let now = nostr::Timestamp::now();
+    if created_at < now - 120_i64 && created_at > now + 120_i64 {
+        error!("error in disable_zaps: event time not in range");
+        return Err((
+            StatusCode::BAD_REQUEST,
+            "Event time not in range".to_string(),
+        ));
+    }
+
+    match get_user_by_pubkey(&state, pubkey.to_string()) {
+        Ok(Some(u)) => {
+            info!("disable_zaps found user for pubkey: {}", pubkey);
+
+            // got the user, now change the federation
+            match disable_user_zaps(&state, u) {
+                Ok(_) => {
+                    info!(
+                        "disable_zaps changed user federation for pubkey: {}",
+                        pubkey
+                    );
+                    Ok(())
+                }
+                Err(e) => Err(handle_anyhow_error("disable_zaps", e)),
+            }
+        }
+        Ok(None) => {
+            error!("disable_zaps not found: {}", pubkey);
+
+            Err((StatusCode::NOT_FOUND, "User not found".to_string()))
+        }
+        Err(e) => Err(handle_anyhow_error("disable_zaps", e)),
+    }
+}
+
 #[derive(Deserialize, Clone)]
 pub struct RegisterRequest {
     pub name: Option<String>,