botserv: op assigned bots on join; statserv: persist counters across restart

Problem 1: an assigned bot joined via IJOIN with no status mode, so it had no
+o. Join it with the 4-param IJOIN form (ts 1, mode o) so it's opped, matching
Anope's default bot modes (+o), and exempt bots from SECUREOPS/RESTRICTED so the
op is never stripped.

Problem 2: the shared stat counters lived only in memory, so a restart wiped
them. Snapshot them to the log (StatsSet event, folded into NetData + compaction)
periodically and on shutdown, and reseed the live registry from the log at
startup. Live gauges (online counts) stay re-derived, not stored.

src/engine/db/event.rs

@@ -136,6 +136,9 @@ pub enum Event {
     // by minting a fake one on `sid`), so Local scope but still persisted.
     JupeAdded { name: String, sid: String, reason: String },
     JupeRemoved { name: String },
+    // A full snapshot of the shared stat counters (StatServ / gRPC Stats),
+    // written periodically and on shutdown so they survive a restart.
+    StatsSet { counters: Vec<(String, u64)> },
 }
 
 // Whether an event replicates across the federation. Account identity is Global
@@ -238,7 +241,8 @@ impl Event {
             | Event::ChannelExpiryWarned { .. }
             | Event::ChannelOperNoteSet { .. }
             | Event::JupeAdded { .. }
-            | Event::JupeRemoved { .. } => Scope::Local,
+            | Event::JupeRemoved { .. }
+            | Event::StatsSet { .. } => Scope::Local,
         }
     }
 }
@@ -623,6 +627,10 @@ pub(crate) fn apply(accounts: &mut HashMap<String, Account>, channels: &mut Hash
         Event::JupeRemoved { name } => {
             net.jupes.retain(|j| !j.name.eq_ignore_ascii_case(&name));
         }
+        Event::StatsSet { counters } => {
+            // A full snapshot: replace, so replaying the newest wins.
+            net.stats = counters.into_iter().collect();
+        }
         Event::AccountExpiryWarned { account } => {
             if let Some(a) = accounts.get_mut(&key(&account)) {
                 a.expiry_warned = true;

src/engine/db/mod.rs

@@ -307,6 +307,9 @@ pub struct NetData {
     // The bot auto-assigned to newly registered channels (BotServ AUTOASSIGN),
     // if any. Casefolded nick; None disables auto-assignment.
     pub default_bot: Option<String>,
+    // Persisted shared stat counters (StatServ / gRPC Stats), snapshotted so they
+    // survive a restart (live gauges are re-derived, not stored here).
+    pub stats: std::collections::BTreeMap<String, u64>,
 }
 
 // A session-limit exception: an IP-mask glob and the session allowance for IPs
@@ -1165,6 +1168,9 @@ impl Db {
         if self.net.default_bot.is_some() {
             snapshot.push(Event::DefaultBotSet { bot: self.net.default_bot.clone() });
         }
+        if !self.net.stats.is_empty() {
+            snapshot.push(Event::StatsSet { counters: self.net.stats.iter().map(|(k, v)| (k.clone(), *v)).collect() });
+        }
         for host in &self.host_cfg.offers {
             snapshot.push(Event::VhostOfferAdded { host: host.clone() });
         }

src/engine/db/network.rs

@@ -245,6 +245,18 @@ impl Db {
         self.net.jupes.iter().map(|j| (j.name.clone(), j.sid.clone(), j.reason.clone())).collect()
     }
 
+    /// The persisted stat counters, to seed the live registry on startup.
+    pub fn persisted_stats(&self) -> std::collections::BTreeMap<String, u64> {
+        self.net.stats.clone()
+    }
+
+    /// Snapshot the live stat counters to the log so they survive a restart.
+    pub fn persist_stats(&mut self, counters: &std::collections::BTreeMap<String, u64>) -> std::io::Result<()> {
+        self.log.append(Event::StatsSet { counters: counters.iter().map(|(k, v)| (k.clone(), *v)).collect() })?;
+        self.net.stats = counters.clone();
+        Ok(())
+    }
+
     /// File an abuse report, rate-limited per reporter. Returns the new report's
     /// id, or None if the reporter filed one too recently.
     pub fn report_file(&mut self, reporter: &str, target: &str, reason: &str) -> Option<u64> {

src/engine/db/tests.rs

@@ -525,6 +525,22 @@
         assert_eq!(db.jupes(), vec![("rogue.example".to_string(), sid, "abuse".to_string())], "the jupe replays from the log");
     }
 
+    // StatServ / Stats-API counters are snapshotted to the log, so they survive a
+    // restart instead of resetting to zero.
+    #[test]
+    fn stat_counters_survive_a_restart() {
+        let p = tmp("statspersist");
+        let counters: std::collections::BTreeMap<String, u64> =
+            [("chanserv.register".to_string(), 7u64), ("nickserv.identify".to_string(), 42u64)].into_iter().collect();
+        {
+            let mut db = Db::open(&p, "N1");
+            db.persist_stats(&counters).unwrap();
+            assert_eq!(db.persisted_stats(), counters, "stored while live");
+        }
+        let db = Db::open(&p, "N1");
+        assert_eq!(db.persisted_stats(), counters, "counters replay from the log after a restart");
+    }
+
     // Fold parity: the live state after a broad sequence of writes must equal the
     // state rebuilt by replaying the same log — every event's manual live mutation
     // has to match its `apply()` arm, or a restart silently changes the data.

src/engine/mod.rs

@@ -213,6 +213,8 @@ impl Engine {
                 (!topics.is_empty()).then(|| (s.nick().to_string(), blurb, topics))
             })
             .collect();
+        // Restore the persisted stat counters so they survive a restart.
+        network.seed_stats(db.persisted_stats());
         Self {
             services,
             network,
@@ -268,6 +270,19 @@ impl Engine {
         m
     }
 
+    // Snapshot the accumulated stat counters to the log (periodically and on
+    // shutdown) so StatServ / the Stats API keep their history across a restart.
+    // Only the real counters are persisted; the live gauges above are re-derived.
+    pub fn persist_stats(&mut self) {
+        let counters = self.network.stat_counters().clone();
+        if counters.is_empty() {
+            return;
+        }
+        if let Err(err) = self.db.persist_stats(&counters) {
+            tracing::warn!(%err, "failed to persist stat counters");
+        }
+    }
+
     // Wall-clock seconds, overridable in tests so the time-based FLOOD kicker is
     // deterministic.
     fn now_secs(&self) -> u64 {
@@ -930,13 +945,16 @@ impl Engine {
                 // Computed before the match below moves `channel` into its actions.
                 let greet = self.greet_on_join(&channel, account.as_deref());
                 let mut out = Vec::new();
+                // A services bot assigned here is opped on join and is never subject
+                // to secureops/restricted — it's staff, not a member.
+                let is_bot = self.bot_uids.values().any(|b| b == &uid);
                 // SECUREOPS: a user who arrives opped (FJOIN prefix) but lacks op-level
                 // access loses it, unless we're about to grant it to them anyway.
-                if op && mode != Some("+o") && self.db.channel(&channel).is_some_and(|c| c.settings.secureops) {
+                if op && mode != Some("+o") && !is_bot && self.db.channel(&channel).is_some_and(|c| c.settings.secureops) {
                     out.push(NetAction::ChannelMode { from: from.clone(), channel: channel.clone(), modes: format!("-o {uid}") });
                 }
                 // RESTRICTED: only users with access (or opers) may be in the channel.
-                if mode.is_none() && self.db.channel(&channel).is_some_and(|c| c.settings.restricted) {
+                if mode.is_none() && !is_bot && self.db.channel(&channel).is_some_and(|c| c.settings.restricted) {
                     let is_oper = account.as_deref().is_some_and(|a| self.oper_privs(a).any());
                     if !is_oper {
                         out.push(NetAction::Kick { from, channel, uid, reason: "This channel is restricted to users with access.".to_string() });
@@ -1348,7 +1366,7 @@ fn audit_summary(event: &db::Event) -> Option<String> {
         | ChannelMlock { .. } | ChannelDescSet { .. } | ChannelEntryMsgSet { .. } | ChannelUrlSet { .. } | ChannelEmailSet { .. } | ChannelSettingsSet { .. }
         | ChannelKickerSet { .. } | ChannelBadwordsSet { .. } | ChannelTriggersSet { .. }
         | ChannelTopicSet { .. } | AccountSeen { .. } | ChannelUsed { .. }
-        | AccountExpiryWarned { .. } | ChannelExpiryWarned { .. } => return None,
+        | AccountExpiryWarned { .. } | ChannelExpiryWarned { .. } | StatsSet { .. } => return None,
     };
     Some(s)
 }

src/engine/state.rs

@@ -349,6 +349,11 @@ impl Network {
         &self.stats
     }
 
+    // Seed the counters from persisted state at startup, so they survive restarts.
+    pub fn seed_stats(&mut self, stats: BTreeMap<String, u64>) {
+        self.stats = stats;
+    }
+
     // BOTSTATS view: (total lines, top talkers by count, descending).
     pub fn channel_activity(&self, channel: &str) -> Option<(u64, Vec<(String, u64)>)> {
         let c = self.channels.get(&lc(channel))?;

src/grpc.rs

@@ -181,6 +181,7 @@ fn to_wire(entry: &LogEntry) -> Option<ReplicationEvent> {
         | Event::ForbidRemoved { .. }
         | Event::JupeAdded { .. }
         | Event::JupeRemoved { .. }
+        | Event::StatsSet { .. }
         | Event::AccountExpiryWarned { .. }
         | Event::ChannelExpiryWarned { .. }
         | Event::AccountOperNoteSet { .. }

src/link.rs

@@ -40,7 +40,7 @@ fn redact(line: &str) -> Cow<'_, str> {
                 let is_set_password = cmd == "set"
                     && words.next().map(|w| w.eq_ignore_ascii_case("password")).unwrap_or(false);
                 if (SECRET_CMDS.contains(&cmd.as_str()) || is_set_password) && argstart < line.len() {
-                    return format!("{} :[REDACTED]", &line[..tstart].trim_end_matches(" :")).into();
+                    return format!("{} :[REDACTED]", line[..tstart].trim_end_matches(" :")).into();
                 }
             }
         }
@@ -130,6 +130,7 @@ pub async fn run(mut proto: Box<dyn Protocol>, engine: Arc<Mutex<Engine>>, addr:
                                 continue;
                             }
                             if let NetAction::Shutdown { restart, reason } = act {
+                                engine.lock().await.persist_stats();
                                 let _ = write.flush().await;
                                 shutdown(restart, &reason);
                             }
@@ -146,6 +147,7 @@ pub async fn run(mut proto: Box<dyn Protocol>, engine: Arc<Mutex<Engine>>, addr:
                 if let NetAction::SendEmail { to, subject, text, html } = action {
                     dispatch_email(&email, to, subject, text, html);
                 } else if let NetAction::Shutdown { restart, reason } = action {
+                    engine.lock().await.persist_stats();
                     let _ = write.flush().await;
                     shutdown(restart, &reason);
                 } else {

src/main.rs

@@ -208,8 +208,9 @@ async fn main() -> Result<()> {
         let engine = engine.clone();
         tokio::spawn(async move {
             loop {
-                tokio::time::sleep(std::time::Duration::from_secs(1800)).await;
+                tokio::time::sleep(std::time::Duration::from_secs(300)).await;
                 let mut e = engine.lock().await;
+                e.persist_stats(); // snapshot counters so a crash loses at most ~5 min
                 e.expire_sweep();
                 if let Err(err) = e.maybe_compact() {
                     tracing::warn!(%err, "compaction failed");
@@ -246,9 +247,12 @@ async fn main() -> Result<()> {
     // Run until the uplink loop ends or the process is asked to stop. Every
     // committed change is already fsync'd, so a clean stop loses nothing; this
     // just lets systemd stop us without waiting out the kill timeout.
+    let shutdown_engine = engine.clone();
     tokio::select! {
         res = link::run(proto, engine, &addr, irc_rx, cfg.email.clone()) => res,
         _ = shutdown_signal() => {
+            // Flush stat counters so a clean stop/restart keeps StatServ history.
+            shutdown_engine.lock().await.persist_stats();
             tracing::info!("received shutdown signal, exiting");
             Ok(())
         }