implement password changes

bank_core/src/util.rs

@@ -34,6 +34,31 @@ impl Name {
     }
 }
 
+#[derive(Clone, PartialEq, Eq, Validate, Serialize, Deserialize)]
+#[cfg_attr(feature = "schemas", derive(schemars::JsonSchema))]
+#[garde(transparent)]
+pub struct Password(#[garde(length(min = 8, max = 96))] pub String);
+
+impl std::fmt::Debug for Password {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        f.debug_tuple("Password").field(&"...").finish()
+    }
+}
+
+impl Deref for Password {
+    type Target = str;
+
+    fn deref(&self) -> &Self::Target {
+        self.0.as_str()
+    }
+}
+
+impl Password {
+    pub fn into_inner(self) -> String {
+        self.0
+    }
+}
+
 #[derive(Debug, Clone, Deserialize, Serialize, Validate, PartialEq, Eq)]
 #[cfg_attr(feature = "schemas", derive(schemars::JsonSchema))]
 #[serde(untagged)]
@@ -42,22 +67,20 @@ pub enum NameOrUuid {
     Name(#[garde(dive)] Name),
 }
 
-#[derive(Clone, Deserialize, Serialize, Validate, PartialEq, Eq)]
+#[derive(Debug, Clone, Deserialize, Serialize, Validate, PartialEq, Eq)]
+#[cfg_attr(feature = "schemas", derive(schemars::JsonSchema))]
+pub struct ChangePassword {
+    #[garde(dive)]
+    pub password: Password,
+}
+
+#[derive(Debug, Clone, Deserialize, Serialize, Validate, PartialEq, Eq)]
 #[cfg_attr(feature = "schemas", derive(schemars::JsonSchema))]
 pub struct Credentials {
     #[garde(dive)]
     pub name: Name,
-    #[garde(length(min = 8, max = 96))]
-    pub password: String,
-}
-
-impl std::fmt::Debug for Credentials {
-    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
-        f.debug_struct("Credentials")
-            .field("name", &self.name)
-            .field("password", &"...")
-            .finish()
-    }
+    #[garde(dive)]
+    pub password: Password,
 }
 
 #[derive(Debug, Clone, Deserialize, Serialize, PartialEq, Eq)]

openapi-def.yaml

@@ -125,6 +125,27 @@ paths:
           $ref: '#/components/responses/Unauthorized'
         default:
           $ref: '#/components/responses/Default'
+  /api/users/@me/password:
+    put:
+      operationId: self-change-password
+      summary: Change password
+      tags:
+        - Users
+      security:
+        - bearer: []
+      responses:
+        200:
+          description: Ok
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/TokenResponse'
+        401:
+          $ref: '#/components/responses/Unauthorized'
+        422:
+          $ref: '#/components/responses/InvalidBody'
+        default:
+          $ref: '#/components/responses/Default'
   /api/users/@me/data:
     get:
       operationId: self-list-data

src/api/auth.rs

@@ -52,7 +52,7 @@ async fn login(
     else {
         return Err(invalid_username_or_password().into());
     };
-    verify_password(credentials.password, &hash).map_err(|err| match err {
+    verify_password(&credentials.password.0, &hash).map_err(|err| match err {
         password_auth::VerifyError::Parse(parse_error) => {
             Error::new(InnerError::PHCParse(parse_error))
         }
@@ -63,7 +63,7 @@ async fn login(
 }
 
 #[derive(Serialize, Deserialize)]
-struct Claims<'a> {
+pub(crate) struct Claims<'a> {
     #[serde(rename = "iss")]
     issuer: Cow<'a, str>,
     #[serde(rename = "sub")]

src/api/user.rs

@@ -1,11 +1,17 @@
 use std::sync::Arc;
 
-use axum::{Router, extract::Path, routing::get};
+use axum::{
+    Router,
+    extract::Path,
+    routing::{get, put},
+};
 use bank_core::{
+    ChangePassword, TokenResponse,
     pagination::Pagination,
     transaction::{FullTransaction, TransactionQuery},
     user::{User, UserAccounts, UserBalance},
 };
+use garde::Validate;
 use serde::{Deserialize, Serialize};
 use tracing::instrument;
 use uuid::Uuid;
@@ -15,7 +21,10 @@ use crate::{
     model::{Accounts, Transactions, Users},
 };
 
-use super::{AppState, EState, Error, Json, PaginationQuery, Query, State, auth::Auth};
+use super::{
+    AppState, EState, Error, Json, PaginationQuery, Query, State,
+    auth::{Auth, Claims},
+};
 
 pub(super) fn router() -> Router<Arc<AppState>> {
     Router::new()
@@ -25,6 +34,7 @@ pub(super) fn router() -> Router<Arc<AppState>> {
         .route("/@me/data/{key}", get(get_user_data).put(set_user_data))
         .route("/@me/accounts", get(user_accounts))
         .route("/@me/transactions", get(me_transaction_history))
+        .route("/@me/password", put(change_password))
         .route("/", get(list_users))
 }
 
@@ -141,6 +151,20 @@ pub async fn set_user_data(
     Ok(())
 }
 
+#[instrument(skip(state))]
+async fn change_password(
+    EState(state): State,
+    auth: Auth,
+    Json(body): Json<ChangePassword>,
+) -> Result<Json<TokenResponse>, Error> {
+    body.validate()?;
+    let mut conn = state.conn().await?;
+    let id = auth.user_id();
+    Users::change_password(&mut conn, id, &body.password).await?;
+    let token = Claims::new(id).encode(&state.encoding_key).unwrap();
+    Ok(Json(TokenResponse { token }))
+}
+
 #[cfg(test)]
 mod tests {
     use uuid::Uuid;

src/model/user.rs

@@ -42,6 +42,7 @@ impl Users {
         let result = client.query_one(&stmt, &[&id]).await?;
         Ok(result.get(0))
     }
+
     #[instrument(skip(client, password))]
     pub async fn create(
         client: &mut impl GenericClient,
@@ -64,6 +65,20 @@ impl Users {
         Ok(id)
     }
 
+    #[instrument(skip(client, password))]
+    pub async fn change_password(
+        client: &mut impl GenericClient,
+        user: Uuid,
+        password: &str,
+    ) -> Result<(), tokio_postgres::Error> {
+        let hash = password_auth::generate_hash(password);
+        let stmt = client
+            .prepare_cached("update users set password = $2 where id = $1")
+            .await?;
+        client.execute(&stmt, &[&user, &hash]).await?;
+        Ok(())
+    }
+
     #[instrument(skip(client))]
     pub async fn get_password_and_info_by_username(
         client: &impl GenericClient,

tests/integration/user-password.hurl

@@ -0,0 +1,24 @@
+POST {{host}}/api/login
+{
+  "name": "user6",
+  "password": "this-is-a-password"
+}
+HTTP 200
+[Captures]
+token: jsonpath "$.token"
+
+
+PUT {{host}}/api/users/@me/password
+Authorization: Bearer {{token}}
+{
+  "password": "this-is-another-password"
+}
+HTTP 200
+
+
+POST {{host}}/api/login
+{
+  "name": "user6",
+  "password": "this-is-another-password"
+}
+HTTP 200