feat(tokens): implemented token duplication protection

src/api/account/handlers.rs

@@ -92,7 +92,7 @@ pub async fn verify(
         return Ok(data::VerifyResponse::Blocked);
     }
 
-    let token = match VerificationToken::check(pool, request.token).await? {
+    let token = match VerificationToken::check(pool, &request.token).await? {
         Some(t) => t,
         None => return Ok(data::VerifyResponse::TokenUnknown),
     };
@@ -135,12 +135,15 @@ pub async fn delete(pool: &MySqlPool, token: String) -> Result<data::DeleteRespo
         return Ok(data::DeleteResponse::Blocked);
     }
 
-    let token = match AuthToken::check(pool, token).await? {
+    let token = match AuthToken::check(pool, &token).await? {
         Some(t) => t,
         None => return Ok(data::DeleteResponse::Unauthorized),
     };
 
-    sqlx::query!(r#"DELETE FROM AuthTokens WHERE account = ?;"#, token.account)
+    sqlx::query!(
+        r#"DELETE FROM AuthTokens WHERE account = ?;"#,
+        token.account
+    )
     .execute(pool)
     .await?;
 

src/tokens.rs

@@ -1,4 +1,3 @@
-use crate::accounts::Account;
 use anyhow::{Error, Result};
 use sqlx::{mysql::MySqlPool, types::chrono as sqlx_chrono};
 
@@ -27,12 +26,16 @@ impl AuthToken {
             }
         };
 
-        let token = Self {
+        let mut token = Self {
             token: uuid::Uuid::new_v4().simple().to_string(),
             account: account_id as u64,
             expire,
         };
 
+        while AuthToken::check(pool, &token.token).await?.is_some() {
+            token.token = uuid::Uuid::new_v4().simple().to_string();
+        }
+
         sqlx::query!(
             r#"
             INSERT INTO AuthTokens (token, account, expire) VALUES (?, ?, ?);
@@ -47,7 +50,7 @@ impl AuthToken {
         Ok(token)
     }
 
-    pub async fn check(pool: &MySqlPool, alphanumeric_token: String) -> Result<Option<Self>> {
+    pub async fn check(pool: &MySqlPool, alphanumeric_token: &String) -> Result<Option<Self>> {
         let query_result = sqlx::query!(
             r#"SELECT * FROM AuthTokens WHERE token = ?;"#,
             alphanumeric_token
@@ -107,12 +110,19 @@ impl VerificationToken {
             }
         };
 
-        let token = Self {
+        let mut token = Self {
             token: uuid::Uuid::new_v4().simple().to_string(),
             account: account_id as u64,
             expire,
         };
 
+        while VerificationToken::check(pool, &token.token)
+            .await?
+            .is_some()
+        {
+            token.token = uuid::Uuid::new_v4().simple().to_string();
+        }
+
         sqlx::query!(
             r#"
             INSERT INTO VerificationTokens (token, account, expire) VALUES (?, ?, ?);
@@ -127,7 +137,7 @@ impl VerificationToken {
         Ok(token)
     }
 
-    pub async fn check(pool: &MySqlPool, alphanumeric_token: String) -> Result<Option<Self>> {
+    pub async fn check(pool: &MySqlPool, alphanumeric_token: &String) -> Result<Option<Self>> {
         let query_result = sqlx::query!(
             r#"SELECT * FROM VerificationTokens WHERE token = ?;"#,
             alphanumeric_token
@@ -162,11 +172,17 @@ impl VerificationToken {
     }
 
     pub async fn apply(&self, pool: &MySqlPool) -> Result<()> {
-        sqlx::query!(r#"DELETE FROM VerificationTokens WHERE token = ?;"#, self.token)
+        sqlx::query!(
+            r#"DELETE FROM VerificationTokens WHERE token = ?;"#,
+            self.token
+        )
         .execute(pool)
         .await?;
 
-        sqlx::query!(r#"UPDATE Accounts SET verified=true WHERE id = ?;"#, self.account)
+        sqlx::query!(
+            r#"UPDATE Accounts SET verified=true WHERE id = ?;"#,
+            self.account
+        )
         .execute(pool)
         .await?;