feat(api): added email regex validation on registration

Cargo.lock

@@ -1610,6 +1610,7 @@ dependencies = [
  "log",
  "mail-send",
  "pbkdf2 0.12.2",
+ "regex",
  "serde",
  "sha2",
  "sqlx",

Cargo.toml

@@ -21,3 +21,4 @@ sqlx = { version = "0.7.1", features = ["runtime-tokio", "mysql", "chrono"] }
 uuid = { version = "1.4.1", features = ["v4"] }
 chrono = "0.4"
 mail-send = "0.4.0"
+regex = "1.9.3"

src/api/account/handlers.rs

@@ -5,7 +5,7 @@ use crate::{
 };
 use anyhow::Result;
 use log::info;
-use mail_send::{mail_builder::MessageBuilder, SmtpClient, SmtpClientBuilder};
+use mail_send::{mail_builder::MessageBuilder, SmtpClientBuilder};
 use sqlx::MySqlPool;
 
 fn is_sql_injection(string: &String) -> bool {
@@ -33,6 +33,12 @@ pub async fn register(
         return Ok(data::RegisterResponse::Blocked);
     }
 
+    let email_regex = regex::Regex::new(r"^([a-z0-9_+]([a-z0-9_+.]*[a-z0-9_+])?)@([a-z0-9]+([\-\.]{1}[a-z0-9]+)*\.[a-z]{2,6})")?;
+
+    if !email_regex.is_match(&request.email) {
+        return Ok(data::RegisterResponse::MalformedEmail);
+    }
+
     if Account::from_username(pool, &request.username)
         .await?
         .is_some()