Jean
993f5b2eea
Rebrand the daemon and workspace: the binary is now `echo`, every crate is `echo-*` (`echo-api` and the module crates), Rust imports use `echo_*`, the gRPC proto is `proto/echo.proto` with package `echo.v1`, and the log filter, gossip peer-name default, and on-disk store default (`echo.db.jsonl`) follow. Docs updated throughout. No behaviour change; crate directories and the config schema are untouched.
40 lines
1.8 KiB
Rust
40 lines
1.8 KiB
Rust
use echo_api::{Priv, Sender, ServiceCtx, Store};
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// DEFCON [1-5]: read or set the network defence level. 5 is normal; each lower
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// level adds a restriction — 4 freezes channel registrations, 3 freezes all
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// registrations, 2 also caps everyone to one session, 1 is a full lockdown that
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// turns away new connections. Changing it announces the level to the network.
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// Admin-only.
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pub fn handle(me: &str, from: &Sender, args: &[&str], ctx: &mut ServiceCtx, db: &mut dyn Store) {
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if !from.privs.has(Priv::Admin) {
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ctx.notice(me, from.uid, "Access denied — DEFCON needs the \x02admin\x02 privilege.");
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return;
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}
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match args.get(1) {
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None => ctx.notice(me, from.uid, format!("The network is at \x02DEFCON {}\x02 — {}.", db.defcon(), describe(db.defcon()))),
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Some(&arg) => match arg.parse::<u8>() {
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Ok(level) if (1..=5).contains(&level) => {
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db.set_defcon(level);
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ctx.notice(me, from.uid, format!("DEFCON set to \x02{level}\x02 — {}.", describe(level)));
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// Let everyone know the posture changed.
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let msg = if level == 5 {
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"The network is back to normal operations (DEFCON 5).".to_string()
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} else {
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format!("Network defence level is now \x02DEFCON {level}\x02: {}.", describe(level))
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};
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ctx.global(me, msg);
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}
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_ => ctx.notice(me, from.uid, "Syntax: DEFCON [1-5] (5 = normal, 1 = lockdown)"),
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},
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}
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}
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fn describe(level: u8) -> &'static str {
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match level {
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5 => "normal operations",
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4 => "channel registrations frozen",
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3 => "all registrations frozen",
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2 => "registrations frozen and sessions capped to one per host",
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_ => "full lockdown, no new connections",
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}
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}
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