rpc: add server/stats/ban/message/whowas/spamfilter providers; fix REHASH to reload raw_config

src/modules/rpc/whowas.rs

@@ -0,0 +1,35 @@
+//! rpc whowas provider — `whowas.get`. InspIRCd's `m_rpc_whowas`. Returns the
+//! recent-nick-history entries the ircd keeps for `WHOWAS`.
+
+use super::json::{self, obj, qstr};
+use super::RpcError;
+use crate::server::Server;
+
+pub fn handle(s: &mut Server, action: &str, params: &str) -> Result<String, RpcError> {
+    match action {
+        "get" => {
+            let nick = json::get_str(params, "nick")
+                .ok_or_else(|| RpcError::invalid_params("missing 'nick'"))?;
+            let entries: Vec<String> = s
+                .whowas
+                .iter()
+                .filter(|e| e.nick.eq_ignore_ascii_case(&nick))
+                .map(|e| {
+                    let mut fields = vec![
+                        ("nick", qstr(&e.nick)),
+                        ("ident", qstr(&e.ident)),
+                        ("host", qstr(&e.host)),
+                        ("realname", qstr(&e.realname)),
+                        ("signon", e.ts.to_string()),
+                    ];
+                    if let Some(acct) = &e.account {
+                        fields.push(("account", qstr(acct)));
+                    }
+                    obj(&fields)
+                })
+                .collect();
+            Ok(obj(&[("entries", format!("[{}]", entries.join(",")))]))
+        }
+        other => Err(RpcError::method_not_found(&format!("whowas.{other}"))),
+    }
+}