add: ability to ban strings/characters through server config

crates/core/src/database/posts.rs

@@ -1,6 +1,7 @@
 use std::collections::HashMap;
 use super::*;
 use crate::cache::Cache;
+use crate::config::StringBan;
 use crate::model::auth::Notification;
 use crate::model::communities::Question;
 use crate::model::communities_permissions::CommunityPermission;
@@ -1153,6 +1154,25 @@ impl DataManager {
     /// # Arguments
     /// * `data` - a mock [`Post`] object to insert
     pub async fn create_post(&self, mut data: Post) -> Result<usize> {
+        // check characters
+        for ban in &self.0.banned_data {
+            match ban {
+                StringBan::String(x) => {
+                    if data.content.contains(x) {
+                        return Ok(0);
+                    }
+                }
+                StringBan::Unicode(x) => {
+                    if data.content.contains(&match char::from_u32(x.to_owned()) {
+                        Some(c) => c.to_string(),
+                        None => continue,
+                    }) {
+                        return Ok(0);
+                    }
+                }
+            }
+        }
+
         // check values (if this isn't reposting something else)
         let is_reposting = if let Some(ref repost) = data.context.repost {
             repost.reposting.is_some()