Add Protected Actions Check (#4067)

Since the feature `Login with device` some actions done via the
web-vault need to be verified via an OTP instead of providing the MasterPassword.

This only happens if a user used the `Login with device` on a device
which uses either Biometrics login or PIN. These actions prevent the
athorizing device to send the MasterPasswordHash. When this happens, the
web-vault requests an OTP to be filled-in and this OTP is send to the
users email address which is the same as the email address to login.

The only way to bypass this is by logging in with the your password, in
those cases a password is requested instead of an OTP.

In case SMTP is not enabled, it will show an error message telling to
user to login using there password.

Fixes #4042

src/api/mod.rs

@@ -32,6 +32,7 @@ pub use crate::api::{
     web::routes as web_routes,
     web::static_files,
 };
+use crate::db::{models::User, DbConn};
 use crate::util;
 
 // Type aliases for API methods results
@@ -46,8 +47,31 @@ type JsonVec<T> = Json<Vec<T>>;
 // Common structs representing JSON data received
 #[derive(Deserialize)]
 #[allow(non_snake_case)]
-struct PasswordData {
-    MasterPasswordHash: String,
+struct PasswordOrOtpData {
+    MasterPasswordHash: Option<String>,
+    Otp: Option<String>,
+}
+
+impl PasswordOrOtpData {
+    /// Tokens used via this struct can be used multiple times during the process
+    /// First for the validation to continue, after that to enable or validate the following actions
+    /// This is different per caller, so it can be adjusted to delete the token or not
+    pub async fn validate(&self, user: &User, delete_if_valid: bool, conn: &mut DbConn) -> EmptyResult {
+        use crate::api::core::two_factor::protected_actions::validate_protected_action_otp;
+
+        match (self.MasterPasswordHash.as_deref(), self.Otp.as_deref()) {
+            (Some(pw_hash), None) => {
+                if !user.check_valid_password(pw_hash) {
+                    err!("Invalid password");
+                }
+            }
+            (None, Some(otp)) => {
+                validate_protected_action_otp(otp, &user.uuid, delete_if_valid, conn).await?;
+            }
+            _ => err!("No validation provided"),
+        }
+        Ok(())
+    }
 }
 
 #[derive(Deserialize, Debug, Clone)]