add remote fleet terminal sessions

This commit is contained in:
lda
2026-07-15 07:33:37 +07:00 Verified
parent 4ecef8da38
commit 4d793136ba
24 changed files with 2386 additions and 26 deletions
+2 -2
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@@ -1,7 +1,7 @@
# Caddy template for wakey-control-plane with Cloudflare Access.
#
# Security model:
# - Public endpoints for agents: /healthz, /api/v1/agents/enroll, /api/v1/agent/ws
# - Public endpoints for agents: health, enrollment, control WS, and scoped terminal relay WS
# - Private admin surface: /ui/* and /api/v1/control/* (requires CF Access headers)
#
# Replace cp.example.com with your public control-plane domain.
@@ -10,7 +10,7 @@ wakey.ldlda.com {
encode zstd gzip
# Public agent-facing endpoints.
@public path /healthz /api/v1/agents/enroll /api/v1/agent/ws
@public path /healthz /api/v1/agents/enroll /api/v1/agent/ws /api/v1/agent/terminals/*
handle @public {
reverse_proxy 127.0.0.1:6767
}
+1 -1
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@@ -39,7 +39,7 @@ Use `pty-process` with its async feature as the initial PTY abstraction because
- child session-leader and controlling-terminal setup; and
- a small implementation built on `rustix`.
Adoption remains gated on successfully cross-compiling for the router target and exercising `/bin/ash` or the configured shell on a real device. Wakey does not call `forkpty` or add its own unsafe PTY implementation.
The PTY wrapper is cross-compiled for `armv7-unknown-linux-musleabihf` and its input, output, resize, and exit test has passed on the target router. That focused test remains part of the remote compatibility workflow. Wakey does not call `forkpty` or add its own unsafe PTY implementation.
The executable, working directory, environment, UID, and GID are agent-controlled configuration. The browser cannot supply an arbitrary executable or process environment.
+2
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@@ -15,6 +15,8 @@
"@base-ui/react": "^1.4.0",
"@fontsource-variable/inter": "^5.2.8",
"@tailwindcss/vite": "^4.2.2",
"@xterm/addon-fit": "^0.11.0",
"@xterm/xterm": "^6.0.0",
"class-variance-authority": "^0.7.1",
"clsx": "^2.1.1",
"lucide-react": "^1.8.0",
+22
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@@ -16,6 +16,12 @@ importers:
"@tailwindcss/vite":
specifier: ^4.2.2
version: 4.2.2([email protected](@types/[email protected])([email protected]))
"@xterm/addon-fit":
specifier: ^0.11.0
version: 0.11.0
"@xterm/xterm":
specifier: ^6.0.0
version: 6.0.0
class-variance-authority:
specifier: ^0.7.1
version: 0.7.1
@@ -1242,6 +1248,18 @@ packages:
peerDependencies:
vite: ^4.2.0 || ^5.0.0 || ^6.0.0 || ^7.0.0
"@xterm/[email protected]":
resolution:
{
integrity: sha512-jYcgT6xtVYhnhgxh3QgYDnnNMYTcf8ElbxxFzX0IZo+vabQqSPAjC3c1wJrKB5E19VwQei89QCiZZP86DCPF7g==,
}
"@xterm/[email protected]":
resolution:
{
integrity: sha512-TQwDdQGtwwDt+2cgKDLn0IRaSxYu1tSUjgKarSDkUM0ZNiSRXFpjxEsvc/Zgc5kq5omJ+V0a8/kIM2WD3sMOYg==,
}
[email protected]:
resolution:
{
@@ -4203,6 +4221,10 @@ snapshots:
transitivePeerDependencies:
- supports-color
"@xterm/[email protected]": {}
"@xterm/[email protected]": {}
[email protected]:
dependencies:
mime-types: 3.0.2
+24 -1
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@@ -1,4 +1,4 @@
import { useEffect, useState } from "react";
import { lazy, Suspense, useEffect, useState } from "react";
import { Navigate, Route, Routes } from "react-router-dom";
import { toast } from "sonner";
@@ -15,6 +15,7 @@ import {
setAgentNickname,
} from "@/api";
import { Toaster } from "@/components/ui/sonner";
import { Skeleton } from "@/components/ui/skeleton";
import { AppLayout } from "@/layout/AppLayout";
import { AgentsPage } from "@/pages/AgentsPage";
import { AlertsPage } from "@/pages/AlertsPage";
@@ -23,6 +24,12 @@ import { CommandsPage } from "@/pages/CommandsPage";
import { DashboardPage } from "@/pages/DashboardPage";
import { DevicesPage } from "@/pages/DevicesPage";
import { TokensPage } from "@/pages/TokensPage";
const TerminalPage = lazy(() =>
import("@/pages/TerminalPage").then((module) => ({
default: module.TerminalPage,
})),
);
import { WakeToolsPage } from "@/pages/WakeToolsPage";
type LoadState = "idle" | "loading" | "ready" | "error";
@@ -215,6 +222,22 @@ export function App() {
}
/>
<Route path="tokens" element={<TokensPage />} />
<Route
path="terminal"
element={
<Suspense
fallback={
<Skeleton className="h-[calc(100dvh-2.5rem)] w-full" />
}
>
<TerminalPage
agents={agents}
selectedAgentId={selectedAgentId}
onSelectAgent={setSelectedAgentId}
/>
</Suspense>
}
/>
<Route path="*" element={<Navigate to="/" replace />} />
</Route>
+39
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@@ -2,6 +2,17 @@ export type Agent = {
agent_id: string;
connected: boolean;
nickname?: string | null;
capabilities: "terminal"[];
};
export type TerminalSession = {
terminal_id: string;
agent_id: string;
created_at_unix: number;
agent_attached: boolean;
operator_attached: boolean;
websocket_url: string;
attachment_token?: string;
};
export type Alert = {
@@ -225,6 +236,34 @@ export function fetchAgents(): Promise<Agent[]> {
return request<Agent[]>("/api/v1/control/agents");
}
export function createTerminal(
agentId: string,
rows: number,
cols: number,
): Promise<TerminalSession> {
return request<TerminalSession>("/api/v1/control/terminals", {
method: "POST",
body: JSON.stringify({ agent_id: agentId, rows, cols }),
});
}
export function attachTerminal(terminalId: string): Promise<TerminalSession> {
return request<TerminalSession>(
`/api/v1/control/terminals/${encodeURIComponent(terminalId)}/attach`,
{ method: "POST" },
);
}
export async function closeTerminal(terminalId: string): Promise<void> {
const response = await fetch(
`/api/v1/control/terminals/${encodeURIComponent(terminalId)}`,
{ method: "DELETE" },
);
if (!response.ok) {
throw new Error(`Failed to close terminal: ${response.status}`);
}
}
export function fetchAlerts(): Promise<Alert[]> {
return request<Alert[]>("/api/v1/control/alerts");
}
+2
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@@ -12,6 +12,7 @@ import {
FileText,
Key,
Terminal,
SquareTerminal,
PanelLeftClose,
PanelLeft,
} from "lucide-react";
@@ -57,6 +58,7 @@ const navSections: NavSection[] = [
{ to: "/audit", label: "Audit", icon: FileText },
{ to: "/tokens", label: "Tokens", icon: Key },
{ to: "/commands", label: "Commands", icon: Terminal },
{ to: "/terminal", label: "Terminal", icon: SquareTerminal },
],
},
];
+1
View File
@@ -4,6 +4,7 @@ import { BrowserRouter } from "react-router-dom";
import { ThemeProvider } from "next-themes";
import { TooltipProvider } from "@/components/ui/tooltip";
import { App } from "@/App";
import "@xterm/xterm/css/xterm.css";
import "./styles.css";
createRoot(document.getElementById("root")!).render(
+380
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@@ -0,0 +1,380 @@
import { useCallback, useEffect, useRef, useState } from "react";
import { FitAddon } from "@xterm/addon-fit";
import { Terminal as XTerm } from "@xterm/xterm";
import { Eraser, PlugZap, RotateCcw, Square, Terminal } from "lucide-react";
import { toast } from "sonner";
import {
type Agent,
type TerminalSession,
attachTerminal,
closeTerminal,
createTerminal,
} from "@/api";
import { AgentSelector, displayAgentLabel } from "@/components/AgentSelector";
import { Badge } from "@/components/ui/badge";
import { Button } from "@/components/ui/button";
import {
Tooltip,
TooltipContent,
TooltipTrigger,
} from "@/components/ui/tooltip";
type Props = {
agents: Agent[];
selectedAgentId: string;
onSelectAgent: (agentId: string) => void;
};
type ConnectionState =
| "idle"
| "connecting"
| "ready"
| "disconnected"
| "exited";
function websocketUrl(path: string): string {
const scheme = window.location.protocol === "https:" ? "wss:" : "ws:";
return `${scheme}//${window.location.host}${path}`;
}
export function TerminalPage({
agents,
selectedAgentId,
onSelectAgent,
}: Props) {
const hostRef = useRef<HTMLDivElement>(null);
const terminalRef = useRef<XTerm | null>(null);
const fitRef = useRef<FitAddon | null>(null);
const socketRef = useRef<WebSocket | null>(null);
const intentionalCloseRef = useRef(false);
const lastTerminalSizeRef = useRef({ rows: 0, cols: 0 });
const [session, setSession] = useState<TerminalSession | null>(null);
const [connection, setConnection] = useState<ConnectionState>("idle");
const selectedAgent = agents.find(
(agent) => agent.agent_id === selectedAgentId,
);
const canStart =
selectedAgent?.connected &&
selectedAgent.capabilities.includes("terminal") &&
connection === "idle";
const sendResize = useCallback(() => {
const terminal = terminalRef.current;
const socket = socketRef.current;
if (!terminal || socket?.readyState !== WebSocket.OPEN) return;
if (
lastTerminalSizeRef.current.rows === terminal.rows &&
lastTerminalSizeRef.current.cols === terminal.cols
) {
return;
}
lastTerminalSizeRef.current = {
rows: terminal.rows,
cols: terminal.cols,
};
socket.send(
JSON.stringify({
type: "resize",
rows: terminal.rows,
cols: terminal.cols,
}),
);
}, []);
const connect = useCallback(
(nextSession: TerminalSession) => {
if (!nextSession.attachment_token) {
throw new Error(
"Control plane did not issue a terminal attachment token",
);
}
socketRef.current?.close();
intentionalCloseRef.current = false;
setConnection("connecting");
const socket = new WebSocket(websocketUrl(nextSession.websocket_url));
socket.binaryType = "arraybuffer";
socketRef.current = socket;
socket.onopen = () => {
socket.send(
JSON.stringify({
type: "attach",
attachment_token: nextSession.attachment_token,
}),
);
fitRef.current?.fit();
sendResize();
};
socket.onmessage = (event) => {
if (typeof event.data !== "string") {
terminalRef.current?.write(new Uint8Array(event.data as ArrayBuffer));
return;
}
try {
const control = JSON.parse(event.data) as {
type: string;
exit_code?: number | null;
message?: string;
};
if (control.type === "ready") {
setConnection("ready");
window.requestAnimationFrame(() => {
fitRef.current?.fit();
lastTerminalSizeRef.current = { rows: 0, cols: 0 };
sendResize();
terminalRef.current?.focus();
});
} else if (control.type === "exited") {
setConnection("exited");
terminalRef.current?.writeln(
`\r\n[process exited${control.exit_code == null ? "" : ` ${control.exit_code}`}]`,
);
} else if (control.type === "error") {
setConnection("exited");
terminalRef.current?.writeln(
`\r\n[terminal error: ${control.message ?? "unknown error"}]`,
);
}
} catch {
terminalRef.current?.writeln("\r\n[invalid terminal control frame]");
}
};
socket.onerror = () => {
terminalRef.current?.writeln("\r\n[terminal transport error]");
};
socket.onclose = () => {
socketRef.current = null;
setConnection((current) => {
if (intentionalCloseRef.current || current === "exited")
return current;
return "disconnected";
});
};
},
[sendResize],
);
useEffect(() => {
if (!hostRef.current) return;
const terminal = new XTerm({
cursorBlink: true,
convertEol: false,
fontFamily: '"SFMono-Regular", Consolas, "Liberation Mono", monospace',
fontSize: 14,
lineHeight: 1.1,
scrollback: 5000,
theme: {
background: "#0b1117",
foreground: "#e5e7eb",
cursor: "#6ee7a8",
},
});
const fit = new FitAddon();
terminal.loadAddon(fit);
terminal.open(hostRef.current);
fit.fit();
terminalRef.current = terminal;
fitRef.current = fit;
let cancelled = false;
void document.fonts.ready.then(() => {
if (cancelled) return;
fit.fit();
lastTerminalSizeRef.current = { rows: 0, cols: 0 };
sendResize();
});
const input = terminal.onData((data) => {
const socket = socketRef.current;
if (socket?.readyState === WebSocket.OPEN) {
socket.send(new TextEncoder().encode(data));
}
});
let resizeFrame = 0;
let lastHostWidth = 0;
let lastHostHeight = 0;
const resizeObserver = new ResizeObserver(([entry]) => {
const width = Math.round(entry.contentRect.width);
const height = Math.round(entry.contentRect.height);
if (width === lastHostWidth && height === lastHostHeight) return;
lastHostWidth = width;
lastHostHeight = height;
window.cancelAnimationFrame(resizeFrame);
resizeFrame = window.requestAnimationFrame(() => {
fit.fit();
sendResize();
});
});
resizeObserver.observe(hostRef.current);
return () => {
cancelled = true;
input.dispose();
resizeObserver.disconnect();
window.cancelAnimationFrame(resizeFrame);
socketRef.current?.close();
terminal.dispose();
terminalRef.current = null;
fitRef.current = null;
};
}, [sendResize]);
async function start() {
if (!selectedAgentId || !terminalRef.current) return;
setConnection("connecting");
terminalRef.current.clear();
try {
fitRef.current?.fit();
const created = await createTerminal(
selectedAgentId,
terminalRef.current.rows,
terminalRef.current.cols,
);
setSession(created);
connect(created);
} catch (error) {
setConnection("idle");
toast.error("Could not start terminal", { description: String(error) });
}
}
async function reconnect() {
if (!session) return;
try {
const attached = await attachTerminal(session.terminal_id);
setSession(attached);
connect(attached);
} catch (error) {
setConnection("exited");
toast.error("Terminal session is no longer available", {
description: String(error),
});
}
}
async function close() {
if (!session) return;
intentionalCloseRef.current = true;
socketRef.current?.send(JSON.stringify({ type: "close" }));
socketRef.current?.close();
try {
await closeTerminal(session.terminal_id);
} catch (error) {
toast.error("Terminal cleanup failed", { description: String(error) });
} finally {
setSession(null);
setConnection("idle");
terminalRef.current?.clear();
}
}
return (
<section className="terminal-page" aria-label="Remote terminal">
<header className="terminal-toolbar">
<div className="terminal-heading">
<Terminal className="size-5 text-primary" aria-hidden />
<h1>Remote Terminal</h1>
</div>
<div className="terminal-controls">
<AgentSelector
agents={agents.filter(
(agent) =>
agent.connected && agent.capabilities.includes("terminal"),
)}
value={selectedAgentId}
onChange={onSelectAgent}
disabled={connection !== "idle"}
className="w-full min-w-0 sm:w-64"
/>
{connection === "idle" ? (
<Button type="button" onClick={start} disabled={!canStart}>
<PlugZap className="size-4" aria-hidden />
Connect
</Button>
) : null}
</div>
</header>
{!selectedAgent && connection === "idle" ? (
<p className="terminal-notice">
No connected terminal-capable agent is selected.
</p>
) : selectedAgent && !selectedAgent.capabilities.includes("terminal") ? (
<p className="terminal-notice">
This agent has not enabled remote terminal capability.
</p>
) : null}
<div className="terminal-frame">
<div className="terminal-framebar">
<div className="terminal-session-label">
<Terminal className="size-4" aria-hidden />
<span>
{session && selectedAgent
? displayAgentLabel(selectedAgent)
: "No active session"}
</span>
<Badge
variant="outline"
className="terminal-status"
data-state={connection}
>
<span aria-hidden />
{connection}
</Badge>
</div>
<div className="terminal-frame-actions">
{connection === "disconnected" ? (
<Button
type="button"
size="sm"
variant="ghost"
onClick={reconnect}
>
<RotateCcw className="size-4" aria-hidden />
Reconnect
</Button>
) : null}
<Tooltip>
<TooltipTrigger>
<Button
type="button"
size="icon"
variant="ghost"
disabled={connection === "idle"}
aria-label="Clear terminal"
onClick={() => terminalRef.current?.clear()}
>
<Eraser className="size-4" aria-hidden />
</Button>
</TooltipTrigger>
<TooltipContent>Clear terminal</TooltipContent>
</Tooltip>
{session ? (
<Tooltip>
<TooltipTrigger>
<Button
type="button"
size="icon"
variant="ghost"
className="text-destructive hover:text-destructive"
aria-label="Close terminal session"
onClick={close}
>
<Square className="size-3.5 fill-current" aria-hidden />
</Button>
</TooltipTrigger>
<TooltipContent>Close session</TooltipContent>
</Tooltip>
) : null}
</div>
</div>
<div className="terminal-surface" ref={hostRef} />
</div>
</section>
);
}
+172
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@@ -192,6 +192,12 @@
transition: background 100ms ease-in-out;
}
/* xterm focuses an input near the active row. Keep that focus operation from
scrolling the page shell and moving the terminal toolbar off-screen. */
.app-main:has(.terminal-page) {
overflow: hidden;
}
/* ── Sidebar internals ────────────────────────────────────────────────── */
.sidebar-brand {
@@ -316,6 +322,172 @@
padding: 0.5rem;
}
/* ── Remote terminal ─────────────────────────────────────────────────── */
.terminal-page {
display: flex;
height: calc(100dvh - 2.5rem);
min-height: 0;
flex-direction: column;
gap: 1rem;
overflow: hidden;
}
.terminal-toolbar {
display: flex;
align-items: center;
justify-content: space-between;
gap: 1rem;
flex-wrap: wrap;
}
.terminal-heading {
display: flex;
align-items: center;
gap: 0.65rem;
}
.terminal-heading h1 {
margin: 0;
font-size: 1.0625rem;
font-weight: 650;
}
.terminal-controls {
display: flex;
align-items: center;
justify-content: flex-end;
gap: 0.5rem;
flex-wrap: wrap;
}
.terminal-status {
gap: 0.4rem;
height: 1.4rem;
padding-inline: 0.45rem;
font-size: 0.6875rem;
text-transform: capitalize;
}
.terminal-status > span {
width: 0.45rem;
height: 0.45rem;
border-radius: 999px;
background: var(--presence-unknown);
}
.terminal-status[data-state="ready"] > span {
background: var(--presence-online);
}
.terminal-status[data-state="connecting"] > span {
background: var(--presence-likely);
}
.terminal-status[data-state="disconnected"] > span,
.terminal-status[data-state="exited"] > span {
background: var(--presence-offline);
}
.terminal-notice {
margin: 0;
color: var(--muted-foreground);
font-size: 0.8125rem;
}
.terminal-frame {
display: flex;
flex: 1;
min-height: 0;
flex-direction: column;
overflow: hidden;
border: 1px solid var(--border);
border-radius: var(--radius);
background: #0b1117;
}
.terminal-framebar {
display: flex;
min-height: 2.5rem;
flex-shrink: 0;
align-items: center;
justify-content: space-between;
gap: 0.75rem;
padding: 0.35rem 0.45rem 0.35rem 0.75rem;
border-bottom: 1px solid color-mix(in oklab, white 9%, transparent);
background: #101820;
color: #cbd5e1;
}
.terminal-session-label,
.terminal-frame-actions {
display: flex;
min-width: 0;
align-items: center;
gap: 0.5rem;
}
.terminal-session-label > span:not(.terminal-status) {
overflow: hidden;
color: #dbe4ee;
font-size: 0.75rem;
font-weight: 550;
text-overflow: ellipsis;
white-space: nowrap;
}
.terminal-framebar button {
color: #aab7c4;
}
.terminal-framebar button:hover {
color: #f1f5f9;
background: rgb(255 255 255 / 7%);
}
.terminal-surface {
flex: 1;
min-height: 0;
overflow: hidden;
background: #0b1117;
padding: 0;
}
.terminal-surface .xterm {
height: 100%;
box-sizing: border-box;
background: #0b1117;
padding: 0.75rem;
}
.terminal-surface .xterm-viewport {
/* xterm defaults this element to pure black. It remains visible around the
fitted canvas, so keep it on the same surface as the terminal theme. */
background-color: #0b1117;
overscroll-behavior: contain;
scrollbar-color: color-mix(in oklab, white 28%, transparent) transparent;
scrollbar-width: thin;
}
@media (max-width: 640px) {
.terminal-page {
height: calc(100dvh - 2.5rem);
}
.terminal-controls {
width: 100%;
justify-content: flex-start;
}
.terminal-surface {
min-height: 0;
}
.terminal-surface .xterm {
padding: 0.5rem;
}
}
/* ── Presence badges ──────────────────────────────────────────────────── */
.presence-dot {
+1
View File
@@ -23,6 +23,7 @@ serde_json = "1"
tokio = { version = "1", features = [
"fs",
"macros",
"io-util",
"rt-multi-thread",
"time",
"signal",
+38
View File
@@ -35,6 +35,28 @@ pub struct AgentConfig {
pub mac_name_cache_path: PathBuf,
#[serde(default = "default_observation_store_path")]
pub observation_store_path: PathBuf,
#[serde(default)]
pub terminal: TerminalConfig,
}
#[derive(Clone, Debug, Serialize, Deserialize, PartialEq, Eq)]
pub struct TerminalConfig {
#[serde(default)]
pub enabled: bool,
#[serde(default = "default_terminal_shell")]
pub shell: PathBuf,
#[serde(default = "default_terminal_max_sessions")]
pub max_sessions: usize,
}
impl Default for TerminalConfig {
fn default() -> Self {
Self {
enabled: false,
shell: default_terminal_shell(),
max_sessions: default_terminal_max_sessions(),
}
}
}
pub static DEFAULT_CONFIG: LazyLock<AgentConfig> = LazyLock::new(|| AgentConfig {
@@ -49,6 +71,7 @@ pub static DEFAULT_CONFIG: LazyLock<AgentConfig> = LazyLock::new(|| AgentConfig
dhcp_leases_path: default_dhcp_leases_path(),
mac_name_cache_path: default_mac_name_cache_path(),
observation_store_path: default_observation_store_path(),
terminal: TerminalConfig::default(),
});
impl fmt::Debug for AgentConfig {
@@ -71,6 +94,7 @@ impl fmt::Debug for AgentConfig {
.field("dhcp_leases_path", &self.dhcp_leases_path)
.field("mac_name_cache_path", &self.mac_name_cache_path)
.field("observation_store_path", &self.observation_store_path)
.field("terminal", &self.terminal)
.finish()
}
}
@@ -107,6 +131,14 @@ fn default_observation_store_path() -> PathBuf {
DEFAULT_OBSERVATION_STORE_PATH.into()
}
fn default_terminal_shell() -> PathBuf {
"/bin/ash".into()
}
const fn default_terminal_max_sessions() -> usize {
2
}
impl AgentConfig {
pub fn local_path_envs(&self) -> Vec<(&'static str, &Path)> {
vec![
@@ -214,6 +246,11 @@ mod tests {
dhcp_leases_path: "/tmp/test-dhcp.leases".into(),
mac_name_cache_path: "/tmp/test-names.json".into(),
observation_store_path: "/tmp/test-observations.json".into(),
terminal: TerminalConfig {
enabled: true,
shell: "/bin/sh".into(),
max_sessions: 2,
},
};
save_config(&path, &config).expect("save");
@@ -245,5 +282,6 @@ agent_token = "secret"
config.observation_retention_days,
DEFAULT_OBSERVATION_RETENTION_DAYS
);
assert_eq!(config.terminal, TerminalConfig::default());
}
}
+6
View File
@@ -151,6 +151,11 @@ mod tests {
dhcp_leases_path: "/tmp/custom-dhcp.leases".into(),
mac_name_cache_path: "/tmp/custom-names.json".into(),
observation_store_path: "/tmp/custom-observations.json".into(),
terminal: crate::config::TerminalConfig {
enabled: true,
shell: "/bin/ash".into(),
max_sessions: 2,
},
};
let outcome = enroll(&server_url, "enroll-abc", &path, Some(&base_config))
@@ -164,6 +169,7 @@ mod tests {
assert_eq!(config.observation_retention_days, 11);
assert_eq!(config.pid_file, base_config.pid_file);
assert_eq!(config.dhcp_leases_path, base_config.dhcp_leases_path);
assert_eq!(config.terminal, base_config.terminal);
assert!(outcome.backup_path.is_none());
let persisted = crate::config::load_config(&path).expect("load persisted config");
+2 -1
View File
@@ -2,14 +2,15 @@ mod cli;
mod config;
mod dispatch;
mod enroll;
mod protocol;
mod serve;
mod session;
mod terminal;
mod tracing;
use anyhow::Result;
use clap::Parser;
use cli::{Cli, Command, InitConfigArgs, ObserveCommand};
use wakey_agent::protocol;
#[tokio::main]
async fn main() -> Result<()> {
+90
View File
@@ -17,6 +17,61 @@ impl RequestId {
}
}
#[derive(Debug, Clone, PartialEq, Eq, Hash, Serialize, Deserialize)]
#[serde(transparent)]
pub struct TerminalId(String);
impl TerminalId {
pub fn new(value: impl Into<String>) -> Result<Self, String> {
let value = value.into();
if value.trim().is_empty() {
return Err("terminal_id must not be empty".into());
}
Ok(Self(value))
}
pub fn as_str(&self) -> &str {
&self.0
}
}
impl fmt::Display for TerminalId {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
self.0.fmt(f)
}
}
#[derive(Debug, Clone, Copy, PartialEq, Eq, Serialize, Deserialize)]
#[serde(rename_all = "snake_case")]
pub enum AgentCapability {
Terminal,
}
#[derive(Debug, Clone, Serialize, Deserialize)]
#[serde(tag = "type", rename_all = "snake_case")]
pub enum TerminalControl {
Resize { rows: u16, cols: u16 },
Ready,
Exited { exit_code: Option<i32> },
Error { code: String, message: String },
Close,
}
#[derive(Debug, Clone, Serialize, Deserialize)]
#[serde(tag = "type", rename_all = "snake_case")]
pub enum TerminalAgentHandshake {
Auth {
agent_id: String,
relay_token: String,
},
}
#[derive(Debug, Clone, Serialize, Deserialize)]
#[serde(tag = "type", rename_all = "snake_case")]
pub enum TerminalOperatorHandshake {
Attach { attachment_token: String },
}
impl TryFrom<String> for RequestId {
type Error = String;
@@ -153,6 +208,8 @@ pub enum CommandResult {
pub enum ClientMessage {
Hello {
agent_id: String,
#[serde(default, skip_serializing_if = "Vec::is_empty")]
capabilities: Vec<AgentCapability>,
},
Auth {
agent_id: String,
@@ -173,6 +230,10 @@ pub enum ClientMessage {
request_id: RequestId,
error: ErrorPayload,
},
TerminalRejected {
terminal_id: TerminalId,
error: ErrorPayload,
},
}
#[derive(Clone, Debug, Serialize, Deserialize)]
@@ -183,6 +244,15 @@ pub enum ServerMessage {
command: AgentCommand,
},
SyncDeviceSnapshot,
OpenTerminal {
terminal_id: TerminalId,
relay_token: String,
rows: u16,
cols: u16,
},
CloseTerminal {
terminal_id: TerminalId,
},
}
#[cfg(test)]
@@ -232,4 +302,24 @@ mod tests {
assert!(json.contains("\"type\":\"device_snapshot\""));
assert!(json.contains("\"devices\""));
}
#[test]
fn terminal_messages_serialize_with_explicit_frame_types() {
let message = ServerMessage::OpenTerminal {
terminal_id: TerminalId::new("term-1").expect("terminal id"),
relay_token: "secret".into(),
rows: 30,
cols: 120,
};
let json = serde_json::to_string(&message).expect("serialize open terminal");
assert!(json.contains("\"type\":\"open_terminal\""));
assert!(json.contains("\"terminal_id\":\"term-1\""));
let resize = TerminalControl::Resize {
rows: 40,
cols: 160,
};
let json = serde_json::to_string(&resize).expect("serialize resize");
assert_eq!(json, r#"{"type":"resize","rows":40,"cols":160}"#);
}
}
+58 -2
View File
@@ -8,7 +8,8 @@ use tracing::{debug, error, info, info_span, warn};
use crate::config::AgentConfig;
use crate::dispatch::{dispatch_command, inventory_for_config};
use crate::protocol::{AgentCommand, ClientMessage, ErrorPayload, ServerMessage};
use crate::protocol::{AgentCapability, AgentCommand, ClientMessage, ErrorPayload, ServerMessage};
use crate::terminal::TerminalManager;
pub async fn run(config: AgentConfig) -> Result<()> {
let mut backoff = config.reconnect_base_ms.max(100);
@@ -71,6 +72,7 @@ async fn run_once(config: &AgentConfig) -> Result<()> {
&mut sink,
&ClientMessage::Hello {
agent_id: config.agent_id.clone(),
capabilities: agent_capabilities(config),
},
)
.await?;
@@ -91,9 +93,23 @@ async fn run_once(config: &AgentConfig) -> Result<()> {
));
snapshot_sync.set_missed_tick_behavior(MissedTickBehavior::Skip);
snapshot_sync.reset();
let (terminal_manager, mut terminal_events) = TerminalManager::new(config);
loop {
tokio::select! {
Some(event) = terminal_events.recv() => {
send_json(
&mut sink,
&ClientMessage::TerminalRejected {
terminal_id: event.terminal_id,
error: ErrorPayload {
code: "terminal_worker_failed".into(),
message: event.error,
retryable: Some(false),
},
},
).await?;
}
_ = heartbeat.tick() => {
send_json(&mut sink, &ClientMessage::Heartbeat {
agent_id: config.agent_id.clone(),
@@ -118,7 +134,7 @@ async fn run_once(config: &AgentConfig) -> Result<()> {
Message::Text(text) => {
match serde_json::from_str::<ServerMessage>(&text) {
Ok(message) => {
handle_server_message(config, &mut sink, &mut snapshot_sync, message).await?;
handle_server_message(config, &terminal_manager, &mut sink, &mut snapshot_sync, message).await?;
}
Err(err) => {
// Allow the server to introduce extra frame types without
@@ -181,6 +197,7 @@ pub fn next_backoff_ms(current_ms: u64, max_ms: u64) -> u64 {
async fn handle_server_message<S>(
config: &AgentConfig,
terminal_manager: &TerminalManager,
sink: &mut S,
snapshot_sync: &mut tokio::time::Interval,
message: ServerMessage,
@@ -223,6 +240,35 @@ where
send_device_snapshot_ws(sink, config).await?;
snapshot_sync.reset();
}
ServerMessage::OpenTerminal {
terminal_id,
relay_token,
rows,
cols,
} => {
info!(terminal_id = %terminal_id, rows, cols, "received terminal open request");
if let Err(err) =
terminal_manager.open(config, terminal_id.clone(), relay_token, rows, cols)
{
error!(terminal_id = %terminal_id, error = %err, "terminal open request rejected");
send_json(
sink,
&ClientMessage::TerminalRejected {
terminal_id,
error: ErrorPayload {
code: "terminal_open_rejected".into(),
message: err.to_string(),
retryable: Some(false),
},
},
)
.await?;
}
}
ServerMessage::CloseTerminal { terminal_id } => {
info!(terminal_id = %terminal_id, "received terminal close request");
terminal_manager.close(&terminal_id);
}
}
Ok(())
}
@@ -301,9 +347,19 @@ fn client_message_kind(message: &ClientMessage) -> &'static str {
ClientMessage::DeviceSnapshot { .. } => "device_snapshot",
ClientMessage::Result { .. } => "result",
ClientMessage::Error { .. } => "error",
ClientMessage::TerminalRejected { .. } => "terminal_rejected",
}
}
fn agent_capabilities(config: &AgentConfig) -> Vec<AgentCapability> {
#[cfg(unix)]
if config.terminal.enabled {
return vec![AgentCapability::Terminal];
}
Vec::new()
}
pub fn websocket_url(server_url: &str) -> Result<url::Url> {
let base = url::Url::parse(server_url).context("invalid server_url")?;
let scheme = match base.scheme() {
+345
View File
@@ -0,0 +1,345 @@
use std::collections::HashMap;
use std::path::Path;
use std::sync::{Arc, Mutex, Weak};
use std::time::Duration;
use crate::config::AgentConfig;
use crate::protocol::{TerminalAgentHandshake, TerminalControl, TerminalId};
use anyhow::{Context, Result};
use futures_util::{SinkExt, StreamExt};
use tokio::io::{AsyncReadExt, AsyncWriteExt};
use tokio::sync::{mpsc, oneshot};
use tokio_tungstenite::tungstenite::Message;
use tracing::{info, warn};
const MAX_TERMINAL_FRAME_BYTES: usize = 64 * 1024;
const PROCESS_SIGNAL_GRACE: Duration = Duration::from_secs(1);
/// Owns cancellation handles for terminal workers started by the control socket.
pub struct TerminalManager {
active: Arc<Mutex<HashMap<String, oneshot::Sender<()>>>>,
max_sessions: usize,
events: mpsc::UnboundedSender<TerminalManagerEvent>,
}
pub struct TerminalManagerEvent {
pub terminal_id: TerminalId,
pub error: String,
}
impl TerminalManager {
pub fn new(config: &AgentConfig) -> (Self, mpsc::UnboundedReceiver<TerminalManagerEvent>) {
let (events, event_rx) = mpsc::unbounded_channel();
(
Self {
active: Arc::new(Mutex::new(HashMap::new())),
max_sessions: config.terminal.max_sessions.max(1),
events,
},
event_rx,
)
}
pub fn open(
&self,
config: &AgentConfig,
terminal_id: TerminalId,
relay_token: String,
rows: u16,
cols: u16,
) -> Result<()> {
if !config.terminal.enabled {
anyhow::bail!("terminal capability is disabled");
}
let terminal_key = terminal_id.to_string();
let (cancel_tx, cancel_rx) = oneshot::channel();
{
let mut active = self.active.lock().expect("terminal manager poisoned");
if active.contains_key(&terminal_key) {
anyhow::bail!("terminal session {terminal_key} is already active");
}
if active.len() >= self.max_sessions {
anyhow::bail!("agent terminal session limit reached");
}
active.insert(terminal_key.clone(), cancel_tx);
}
let config = config.clone();
let active = Arc::downgrade(&self.active);
let events = self.events.clone();
tokio::spawn(async move {
if let Err(err) =
run_terminal(&config, &terminal_id, &relay_token, rows, cols, cancel_rx).await
{
warn!(terminal_id = %terminal_id, error = %err, "terminal worker failed");
let _ = events.send(TerminalManagerEvent {
terminal_id: terminal_id.clone(),
error: err.to_string(),
});
}
remove_completed(&active, terminal_id.as_str());
});
Ok(())
}
pub fn close(&self, terminal_id: &TerminalId) -> bool {
self.active
.lock()
.expect("terminal manager poisoned")
.remove(terminal_id.as_str())
.is_some_and(|cancel| cancel.send(()).is_ok())
}
}
impl Drop for TerminalManager {
fn drop(&mut self) {
if Arc::strong_count(&self.active) == 1
&& let Ok(mut active) = self.active.lock()
{
for (_, cancel) in active.drain() {
let _ = cancel.send(());
}
}
}
}
fn remove_completed(active: &Weak<Mutex<HashMap<String, oneshot::Sender<()>>>>, terminal_id: &str) {
if let Some(active) = active.upgrade()
&& let Ok(mut active) = active.lock()
{
active.remove(terminal_id);
}
}
#[cfg(unix)]
async fn run_terminal(
config: &AgentConfig,
terminal_id: &TerminalId,
relay_token: &str,
rows: u16,
cols: u16,
mut cancel: oneshot::Receiver<()>,
) -> Result<()> {
let ws_url = terminal_websocket_url(&config.server_url, terminal_id)?;
let (stream, _) = tokio::select! {
_ = &mut cancel => return Ok(()),
result = tokio_tungstenite::connect_async(ws_url.as_str()) => {
result.context("failed to connect terminal relay websocket")?
}
};
let (mut sink, mut source) = stream.split();
send_json(
&mut sink,
&TerminalAgentHandshake::Auth {
agent_id: config.agent_id.clone(),
relay_token: relay_token.to_string(),
},
)
.await?;
let terminal = match wakey::wakey_linux::terminal::TerminalPty::spawn(
Path::new(&config.terminal.shell),
rows,
cols,
) {
Ok(terminal) => terminal,
Err(err) => {
let _ = send_json(
&mut sink,
&TerminalControl::Error {
code: "terminal_spawn_failed".into(),
message: err.to_string(),
},
)
.await;
let _ = sink.send(Message::Close(None)).await;
return Err(err);
}
};
let wakey::wakey_linux::terminal::TerminalPty {
mut reader,
mut writer,
mut child,
} = terminal;
let process_group = child.id();
send_json(&mut sink, &TerminalControl::Ready).await?;
info!(terminal_id = %terminal_id, shell = %config.terminal.shell.display(), "terminal PTY ready");
let mut output = [0_u8; 16 * 1024];
let mut requested_close = false;
let mut observed_status = None;
loop {
tokio::select! {
_ = &mut cancel => {
requested_close = true;
break;
}
status = child.wait() => {
observed_status = Some(status.context("failed waiting for terminal child")?);
break;
}
read = reader.read(&mut output) => {
match read {
Ok(0) => break,
Ok(count) => sink
.send(Message::Binary(output[..count].to_vec().into()))
.await
.context("failed to send PTY output")?,
// Linux PTY masters commonly report EIO after the slave closes.
Err(err) if err.raw_os_error() == Some(5) => break,
Err(err) => return Err(err).context("failed to read PTY output"),
}
}
incoming = source.next() => {
let Some(message) = incoming else { break; };
match message.context("terminal relay websocket receive failed")? {
Message::Binary(bytes) => {
if bytes.len() > MAX_TERMINAL_FRAME_BYTES {
anyhow::bail!("terminal input frame exceeds size limit");
}
writer.write_all(&bytes).await.context("failed to write PTY input")?;
}
Message::Text(text) => {
match serde_json::from_str::<TerminalControl>(&text)
.context("invalid terminal control frame")?
{
TerminalControl::Resize { rows, cols } => {
validate_size(rows, cols)?;
wakey::wakey_linux::terminal::resize_terminal(
&writer, rows, cols,
)?;
}
TerminalControl::Close => {
requested_close = true;
break;
}
_ => anyhow::bail!("terminal control frame has invalid direction"),
}
}
Message::Ping(payload) => sink.send(Message::Pong(payload)).await?,
Message::Pong(_) => {}
Message::Close(_) => {
requested_close = true;
break;
}
Message::Frame(_) => {}
}
}
}
}
let status = match observed_status {
Some(status) => status,
None => terminate_process_group(&mut child, process_group).await?,
};
let _ = send_json(
&mut sink,
&TerminalControl::Exited {
exit_code: status.code(),
},
)
.await;
let _ = sink.send(Message::Close(None)).await;
info!(terminal_id = %terminal_id, exit_code = ?status.code(), requested_close, "terminal worker exited");
Ok(())
}
#[cfg(not(unix))]
async fn run_terminal(
_config: &AgentConfig,
_terminal_id: &TerminalId,
_relay_token: &str,
_rows: u16,
_cols: u16,
_cancel: oneshot::Receiver<()>,
) -> Result<()> {
anyhow::bail!("terminal sessions are unsupported on this platform")
}
#[cfg(unix)]
async fn terminate_process_group(
child: &mut tokio::process::Child,
process_group: Option<u32>,
) -> Result<std::process::ExitStatus> {
use nix::sys::signal::{Signal, killpg};
use nix::unistd::Pid;
let Some(process_group) = process_group else {
child
.start_kill()
.context("failed to kill terminal child")?;
return child
.wait()
.await
.context("failed waiting for terminal child");
};
let pid = Pid::from_raw(process_group as i32);
let _ = killpg(pid, Signal::SIGHUP);
if let Ok(status) = tokio::time::timeout(PROCESS_SIGNAL_GRACE, child.wait()).await {
return status.context("failed waiting for terminal child after SIGHUP");
}
let _ = killpg(pid, Signal::SIGTERM);
if let Ok(status) = tokio::time::timeout(PROCESS_SIGNAL_GRACE, child.wait()).await {
return status.context("failed waiting for terminal child after SIGTERM");
}
let _ = killpg(pid, Signal::SIGKILL);
child
.wait()
.await
.context("failed waiting for terminal child after SIGKILL")
}
async fn send_json<S, T>(sink: &mut S, value: &T) -> Result<()>
where
S: futures_util::Sink<Message> + Unpin,
S::Error: std::error::Error + Send + Sync + 'static,
T: serde::Serialize,
{
let json = serde_json::to_string(value).context("failed to encode terminal frame")?;
sink.send(Message::Text(json.into()))
.await
.context("failed to send terminal frame")
}
fn terminal_websocket_url(server_url: &str, terminal_id: &TerminalId) -> Result<url::Url> {
let mut url = url::Url::parse(server_url).context("invalid server_url")?;
let scheme = match url.scheme() {
"http" => "ws",
"https" => "wss",
"ws" => "ws",
"wss" => "wss",
other => anyhow::bail!("unsupported server_url scheme `{other}`"),
};
url.set_scheme(scheme)
.map_err(|_| anyhow::anyhow!("failed to convert server_url scheme"))?;
url.set_path(&format!(
"/api/v1/agent/terminals/{}/ws",
terminal_id.as_str()
));
url.set_query(None);
url.set_fragment(None);
Ok(url)
}
fn validate_size(rows: u16, cols: u16) -> Result<()> {
if !(1..=300).contains(&rows) || !(1..=500).contains(&cols) {
anyhow::bail!("terminal size is outside supported bounds");
}
Ok(())
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn terminal_url_uses_dedicated_agent_path() {
let id = TerminalId::new("term-1").expect("terminal id");
let url = terminal_websocket_url("https://example.com/base", &id).expect("url");
assert_eq!(
url.as_str(),
"wss://example.com/api/v1/agent/terminals/term-1/ws"
);
}
}
+6
View File
@@ -6,6 +6,7 @@ use serde::{Deserialize, Serialize};
use std::time::Instant;
use tracing::{info, info_span, warn};
use uuid::Uuid;
use wakey_agent::protocol::AgentCapability;
use wakey_agent::protocol::{AgentCommand, ErrorPayload, RequestId, ServerMessage};
use crate::api::ApiError;
@@ -17,6 +18,7 @@ pub struct AgentStatus {
pub agent_id: String,
pub connected: bool,
pub nickname: Option<String>,
pub capabilities: Vec<AgentCapability>,
}
#[derive(Debug, Deserialize)]
@@ -43,6 +45,10 @@ pub async fn list_agents(State(state): State<AppState>) -> Result<impl IntoRespo
.into_iter()
.map(|(agent_id, nickname)| AgentStatus {
connected: sessions.contains_key(&agent_id),
capabilities: sessions
.get(&agent_id)
.map(|session| session.capabilities.clone())
.unwrap_or_default(),
agent_id,
nickname,
})
+5
View File
@@ -5,6 +5,7 @@ mod alerts;
mod audit;
mod commands;
mod control;
mod terminals;
pub use alerts::{active_alerts, alert_history, alerts_stream};
pub use audit::list_audit_events;
@@ -16,6 +17,10 @@ pub use control::{
list_fleet_devices, list_known_devices, merge_known_device, refresh_fleet_devices,
revoke_agent, revoke_enroll_token, set_agent_nickname, state_stats, wake_fleet_device,
};
pub use terminals::{
agent_terminal_ws, attach_terminal, close_terminal, create_terminal, get_terminal,
operator_terminal_ws,
};
use axum::response::{IntoResponse, Response};
use serde::{Deserialize, Serialize};
+617
View File
@@ -0,0 +1,617 @@
use axum::Json;
use axum::extract::ws::{Message, WebSocket, WebSocketUpgrade};
use axum::extract::{Path, State};
use axum::http::StatusCode;
use axum::response::Response;
use futures_util::{SinkExt, StreamExt};
use serde::{Deserialize, Serialize};
use tracing::{info, warn};
use wakey_agent::protocol::{
AgentCapability, ServerMessage, TerminalAgentHandshake, TerminalControl, TerminalId,
TerminalOperatorHandshake,
};
use crate::api::ApiError;
use crate::runtime::terminals::{
TERMINAL_ABSOLUTE_TIMEOUT, TERMINAL_ATTACH_TIMEOUT, TERMINAL_DISCONNECT_GRACE,
TERMINAL_MAX_FRAME_BYTES, TerminalRelayFrame,
};
use crate::runtime::{AppState, SessionEvent};
use crate::state::AuditEventInput;
#[derive(Debug, Deserialize)]
pub struct CreateTerminalRequest {
pub agent_id: String,
#[serde(default = "default_rows")]
pub rows: u16,
#[serde(default = "default_cols")]
pub cols: u16,
}
#[derive(Debug, Serialize)]
pub struct TerminalSessionResponse {
pub terminal_id: String,
pub agent_id: String,
pub created_at_unix: u64,
pub agent_attached: bool,
pub operator_attached: bool,
pub websocket_url: String,
#[serde(skip_serializing_if = "Option::is_none")]
pub attachment_token: Option<String>,
}
pub async fn create_terminal(
State(state): State<AppState>,
Json(request): Json<CreateTerminalRequest>,
) -> Result<(StatusCode, Json<TerminalSessionResponse>), ApiError> {
validate_size(request.rows, request.cols)?;
let agent_tx = {
let sessions = state.sessions.read().await;
let session = sessions.get(&request.agent_id).ok_or_else(|| {
ApiError::new(
StatusCode::NOT_FOUND,
"agent_not_connected",
"agent is not connected",
)
})?;
if !session.capabilities.contains(&AgentCapability::Terminal) {
return Err(ApiError::new(
StatusCode::CONFLICT,
"terminal_not_supported",
"agent has not advertised terminal capability",
));
}
session.tx.clone()
};
let created = state
.terminals
.create(request.agent_id.clone())
.await
.map_err(registry_error)?;
let terminal_id = TerminalId::new(created.terminal_id.clone()).map_err(|message| {
ApiError::new(
StatusCode::INTERNAL_SERVER_ERROR,
"terminal_id_invalid",
message,
)
})?;
if agent_tx
.send(SessionEvent::Message(ServerMessage::OpenTerminal {
terminal_id: terminal_id.clone(),
relay_token: created.relay_token,
rows: request.rows,
cols: request.cols,
}))
.is_err()
{
state.terminals.remove(terminal_id.as_str()).await;
return Err(ApiError::new(
StatusCode::BAD_GATEWAY,
"agent_send_failed",
"failed to send terminal request to agent",
));
}
spawn_absolute_timeout(state.clone(), terminal_id.clone(), request.agent_id.clone());
append_terminal_audit(
&state,
&request.agent_id,
terminal_id.as_str(),
TerminalAudit {
actor_type: "admin_api",
event_type: "terminal_request",
outcome: "sent",
message: "terminal session requested",
metadata: serde_json::json!({ "rows": request.rows, "cols": request.cols }),
},
)
.await;
info!(terminal_id = %terminal_id, agent_id = %request.agent_id, "terminal session requested");
Ok((
StatusCode::CREATED,
Json(TerminalSessionResponse {
websocket_url: operator_ws_path(terminal_id.as_str()),
terminal_id: terminal_id.to_string(),
agent_id: request.agent_id,
created_at_unix: created.created_at_unix,
agent_attached: false,
operator_attached: false,
attachment_token: Some(created.attachment_token),
}),
))
}
pub async fn get_terminal(
State(state): State<AppState>,
Path(terminal_id): Path<String>,
) -> Result<Json<TerminalSessionResponse>, ApiError> {
let (agent_id, created_at_unix, agent_attached, operator_attached) = state
.terminals
.summary(&terminal_id)
.await
.ok_or_else(|| terminal_not_found(&terminal_id))?;
Ok(Json(TerminalSessionResponse {
websocket_url: operator_ws_path(&terminal_id),
terminal_id,
agent_id,
created_at_unix,
agent_attached,
operator_attached,
attachment_token: None,
}))
}
pub async fn attach_terminal(
State(state): State<AppState>,
Path(terminal_id): Path<String>,
) -> Result<Json<TerminalSessionResponse>, ApiError> {
let attachment_token = state
.terminals
.issue_attachment_token(&terminal_id)
.await
.map_err(registry_error)?;
let (agent_id, created_at_unix, agent_attached, operator_attached) = state
.terminals
.summary(&terminal_id)
.await
.ok_or_else(|| terminal_not_found(&terminal_id))?;
Ok(Json(TerminalSessionResponse {
websocket_url: operator_ws_path(&terminal_id),
terminal_id,
agent_id,
created_at_unix,
agent_attached,
operator_attached,
attachment_token: Some(attachment_token),
}))
}
pub async fn close_terminal(
State(state): State<AppState>,
Path(terminal_id): Path<String>,
) -> Result<StatusCode, ApiError> {
if let Some(agent_id) = close_registered_terminal(&state, &terminal_id).await {
info!(terminal_id, agent_id, "terminal session closed by operator");
append_terminal_audit(
&state,
&agent_id,
&terminal_id,
TerminalAudit {
actor_type: "admin_api",
event_type: "terminal_close",
outcome: "ok",
message: "terminal session closed by operator",
metadata: serde_json::json!({}),
},
)
.await;
} else {
if !state.terminals.was_closed(&terminal_id).await {
return Err(terminal_not_found(&terminal_id));
}
info!(terminal_id, "terminal session was already closed");
}
Ok(StatusCode::NO_CONTENT)
}
pub async fn agent_terminal_ws(
ws: WebSocketUpgrade,
State(state): State<AppState>,
Path(terminal_id): Path<String>,
) -> Response {
ws.max_message_size(TERMINAL_MAX_FRAME_BYTES)
.on_upgrade(move |socket| handle_agent_terminal_socket(state, terminal_id, socket))
}
pub async fn operator_terminal_ws(
ws: WebSocketUpgrade,
State(state): State<AppState>,
Path(terminal_id): Path<String>,
) -> Response {
ws.max_message_size(TERMINAL_MAX_FRAME_BYTES)
.on_upgrade(move |socket| handle_operator_terminal_socket(state, terminal_id, socket))
}
async fn handle_agent_terminal_socket(state: AppState, terminal_id: String, mut socket: WebSocket) {
let auth = match receive_text_handshake(&mut socket).await.and_then(|text| {
serde_json::from_str::<TerminalAgentHandshake>(&text).map_err(|_| "invalid handshake")
}) {
Ok(TerminalAgentHandshake::Auth {
agent_id,
relay_token,
}) => (agent_id, relay_token),
Err(code) => {
close_socket(&mut socket, code).await;
return;
}
};
let (mut outbound, pending) = match state
.terminals
.attach_agent(&terminal_id, &auth.0, &auth.1)
.await
{
Ok(outbound) => outbound,
Err(code) => {
close_socket(&mut socket, code).await;
return;
}
};
info!(terminal_id, agent_id = %auth.0, "agent terminal socket attached");
append_terminal_audit(
&state,
&auth.0,
&terminal_id,
TerminalAudit {
actor_type: "agent",
event_type: "terminal_agent_attach",
outcome: "ok",
message: "agent terminal transport attached",
metadata: serde_json::json!({}),
},
)
.await;
let (mut write, mut read) = socket.split();
for frame in pending {
let closes = matches!(frame, TerminalRelayFrame::Close);
if send_relay_frame(&mut write, frame).await.is_err() || closes {
state.terminals.remove(&terminal_id).await;
return;
}
}
loop {
tokio::select! {
outbound_frame = outbound.recv() => {
let Some(frame) = outbound_frame else { break; };
if send_relay_frame(&mut write, frame).await.is_err() { break; }
}
incoming = read.next() => {
let Some(Ok(message)) = incoming else { break; };
match agent_relay_frame(message) {
Ok(Some(frame)) => {
let closes = matches!(frame, TerminalRelayFrame::Close);
audit_agent_control_frame(&state, &auth.0, &terminal_id, &frame).await;
if state.terminals.relay_from_agent(&terminal_id, frame).await.is_err() { break; }
if closes { break; }
}
Ok(None) => {}
Err(code) => {
warn!(terminal_id, code, "invalid agent terminal frame");
break;
}
}
}
}
}
state.terminals.remove(&terminal_id).await;
info!(
terminal_id,
"agent terminal socket detached; session closed"
);
}
async fn handle_operator_terminal_socket(
state: AppState,
terminal_id: String,
mut socket: WebSocket,
) {
let attachment_token = match receive_text_handshake(&mut socket).await.and_then(|text| {
serde_json::from_str::<TerminalOperatorHandshake>(&text).map_err(|_| "invalid handshake")
}) {
Ok(TerminalOperatorHandshake::Attach { attachment_token }) => attachment_token,
Err(code) => {
close_socket(&mut socket, code).await;
return;
}
};
let (mut outbound, replay) = match state
.terminals
.attach_operator(&terminal_id, &attachment_token)
.await
{
Ok(attached) => attached,
Err(code) => {
close_socket(&mut socket, code).await;
return;
}
};
info!(terminal_id, "operator terminal socket attached");
if let Some((agent_id, _, _, _)) = state.terminals.summary(&terminal_id).await {
append_terminal_audit(
&state,
&agent_id,
&terminal_id,
TerminalAudit {
actor_type: "admin_api",
event_type: "terminal_operator_attach",
outcome: "ok",
message: "operator terminal transport attached",
metadata: serde_json::json!({}),
},
)
.await;
}
let (mut write, mut read) = socket.split();
for frame in replay {
if send_relay_frame(&mut write, frame).await.is_err() {
return;
}
}
let mut explicit_close = false;
loop {
tokio::select! {
outbound_frame = outbound.recv() => {
let Some(frame) = outbound_frame else { break; };
if send_relay_frame(&mut write, frame).await.is_err() { break; }
}
incoming = read.next() => {
let Some(Ok(message)) = incoming else { break; };
match operator_relay_frame(message) {
Ok(Some(frame)) => {
explicit_close = matches!(frame, TerminalRelayFrame::Close);
if state.terminals.relay_to_agent(&terminal_id, frame).await.is_err() { break; }
if explicit_close { break; }
}
Ok(None) => {}
Err(code) => {
warn!(terminal_id, code, "invalid operator terminal frame");
break;
}
}
}
}
}
if explicit_close {
close_registered_terminal(&state, &terminal_id).await;
} else if let Some(detached_at) = state.terminals.detach_operator(&terminal_id).await {
let terminals = state.terminals.clone();
let terminal_id_for_grace = terminal_id.clone();
tokio::spawn(async move {
tokio::time::sleep(TERMINAL_DISCONNECT_GRACE).await;
terminals
.remove_if_still_detached(&terminal_id_for_grace, detached_at)
.await;
});
}
info!(
terminal_id,
explicit_close, "operator terminal socket detached"
);
}
fn agent_relay_frame(message: Message) -> Result<Option<TerminalRelayFrame>, &'static str> {
match message {
Message::Binary(bytes) => Ok(Some(TerminalRelayFrame::Binary(bytes.to_vec()))),
Message::Text(text) => {
let control: TerminalControl =
serde_json::from_str(&text).map_err(|_| "terminal_control_invalid")?;
if !matches!(
control,
TerminalControl::Ready
| TerminalControl::Exited { .. }
| TerminalControl::Error { .. }
| TerminalControl::Close
) {
return Err("terminal_control_direction_invalid");
}
Ok(Some(TerminalRelayFrame::Text(
serde_json::to_string(&control).map_err(|_| "terminal_control_invalid")?,
)))
}
Message::Ping(_) | Message::Pong(_) => Ok(None),
Message::Close(_) => Ok(Some(TerminalRelayFrame::Close)),
}
}
fn operator_relay_frame(message: Message) -> Result<Option<TerminalRelayFrame>, &'static str> {
match message {
Message::Binary(bytes) => Ok(Some(TerminalRelayFrame::Binary(bytes.to_vec()))),
Message::Text(text) => {
let control: TerminalControl =
serde_json::from_str(&text).map_err(|_| "terminal_control_invalid")?;
if !matches!(
control,
TerminalControl::Resize { .. } | TerminalControl::Close
) {
return Err("terminal_control_direction_invalid");
}
if let TerminalControl::Resize { rows, cols } = control {
validate_size(rows, cols).map_err(|_| "terminal_size_invalid")?;
}
Ok(Some(TerminalRelayFrame::Text(
serde_json::to_string(&control).map_err(|_| "terminal_control_invalid")?,
)))
}
Message::Ping(_) | Message::Pong(_) => Ok(None),
Message::Close(_) => Ok(None),
}
}
async fn receive_text_handshake(socket: &mut WebSocket) -> Result<String, &'static str> {
match tokio::time::timeout(TERMINAL_ATTACH_TIMEOUT, socket.recv()).await {
Ok(Some(Ok(Message::Text(text)))) => Ok(text.to_string()),
Ok(_) => Err("terminal_handshake_required"),
Err(_) => Err("terminal_handshake_timeout"),
}
}
async fn close_socket(socket: &mut WebSocket, code: &str) {
let control = TerminalControl::Error {
code: code.into(),
message: code.replace('_', " "),
};
if let Ok(json) = serde_json::to_string(&control) {
let _ = socket.send(Message::Text(json.into())).await;
}
let _ = socket.send(Message::Close(None)).await;
}
async fn send_relay_frame<S>(write: &mut S, frame: TerminalRelayFrame) -> Result<(), axum::Error>
where
S: futures_util::Sink<Message, Error = axum::Error> + Unpin,
{
let message = match frame {
TerminalRelayFrame::Binary(bytes) => Message::Binary(bytes.into()),
TerminalRelayFrame::Text(text) => Message::Text(text.into()),
TerminalRelayFrame::Close => Message::Close(None),
};
write.send(message).await
}
async fn close_registered_terminal(state: &AppState, terminal_id: &str) -> Option<String> {
let agent_id = state.terminals.remove(terminal_id).await?;
if let Some(session) = state.sessions.read().await.get(&agent_id) {
let terminal_id = TerminalId::new(terminal_id.to_string()).ok()?;
let _ = session
.tx
.send(SessionEvent::Message(ServerMessage::CloseTerminal {
terminal_id,
}));
}
Some(agent_id)
}
fn spawn_absolute_timeout(state: AppState, terminal_id: TerminalId, agent_id: String) {
tokio::spawn(async move {
tokio::time::sleep(TERMINAL_ABSOLUTE_TIMEOUT).await;
if close_registered_terminal(&state, terminal_id.as_str())
.await
.is_some()
{
info!(terminal_id = %terminal_id, agent_id, "terminal absolute timeout reached");
}
});
}
struct TerminalAudit<'a> {
actor_type: &'a str,
event_type: &'a str,
outcome: &'a str,
message: &'a str,
metadata: serde_json::Value,
}
async fn audit_agent_control_frame(
state: &AppState,
agent_id: &str,
terminal_id: &str,
frame: &TerminalRelayFrame,
) {
let TerminalRelayFrame::Text(text) = frame else {
return;
};
let Ok(control) = serde_json::from_str::<TerminalControl>(text) else {
return;
};
let audit = match control {
TerminalControl::Ready => TerminalAudit {
actor_type: "agent",
event_type: "terminal_ready",
outcome: "ok",
message: "terminal PTY ready",
metadata: serde_json::json!({}),
},
TerminalControl::Exited { exit_code } => TerminalAudit {
actor_type: "agent",
event_type: "terminal_exit",
outcome: "exited",
message: "terminal process exited",
metadata: serde_json::json!({ "exit_code": exit_code }),
},
TerminalControl::Error { code, .. } => TerminalAudit {
actor_type: "agent",
event_type: "terminal_error",
outcome: "error",
message: "terminal worker reported an error",
metadata: serde_json::json!({ "code": code }),
},
_ => return,
};
append_terminal_audit(state, agent_id, terminal_id, audit).await;
}
async fn append_terminal_audit(
state: &AppState,
agent_id: &str,
terminal_id: &str,
audit: TerminalAudit<'_>,
) {
if let Err(err) = state
.store
.append_audit_event(AuditEventInput {
actor_type: audit.actor_type.into(),
actor_id: None,
agent_id: Some(agent_id.to_string()),
request_id: Some(terminal_id.to_string()),
event_type: audit.event_type.into(),
outcome: audit.outcome.into(),
latency_ms: None,
message: audit.message.into(),
metadata: audit.metadata,
})
.await
{
warn!(terminal_id, event_type = audit.event_type, error = %err, "failed to append terminal audit event");
}
}
fn validate_size(rows: u16, cols: u16) -> Result<(), ApiError> {
if !(1..=300).contains(&rows) || !(1..=500).contains(&cols) {
return Err(ApiError::new(
StatusCode::BAD_REQUEST,
"terminal_size_invalid",
"terminal rows must be 1..=300 and columns must be 1..=500",
));
}
Ok(())
}
fn registry_error(code: &'static str) -> ApiError {
let status = match code {
"terminal_not_found" => StatusCode::NOT_FOUND,
"terminal_relay_token_invalid" | "terminal_attachment_token_invalid" => {
StatusCode::UNAUTHORIZED
}
_ => StatusCode::CONFLICT,
};
ApiError::new(status, code, code.replace('_', " "))
}
fn terminal_not_found(terminal_id: &str) -> ApiError {
ApiError::new(
StatusCode::NOT_FOUND,
"terminal_not_found",
format!("terminal session {terminal_id} was not found"),
)
}
fn operator_ws_path(terminal_id: &str) -> String {
format!("/api/v1/control/terminals/{terminal_id}/ws")
}
const fn default_rows() -> u16 {
24
}
const fn default_cols() -> u16 {
80
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn terminal_control_direction_is_enforced() {
let resize = serde_json::to_string(&TerminalControl::Resize { rows: 24, cols: 80 })
.expect("resize json");
assert!(operator_relay_frame(Message::Text(resize.into())).is_ok());
let ready = serde_json::to_string(&TerminalControl::Ready).expect("ready json");
assert!(operator_relay_frame(Message::Text(ready.into())).is_err());
}
}
+22 -1
View File
@@ -16,7 +16,7 @@ use tower_http::services::ServeFile;
use tracing::info;
#[cfg(unix)]
use tracing::warn;
use wakey_agent::protocol::{ErrorPayload, ServerMessage};
use wakey_agent::protocol::{AgentCapability, ErrorPayload, ServerMessage};
use crate::api;
use crate::config;
@@ -25,6 +25,7 @@ use crate::ws;
mod admin;
mod process;
pub mod terminals;
pub use admin::revoke_agent;
pub use admin::{
issue_enroll_token, list_enroll_tokens, migrate_sqlite_state, revoke_enroll_token, state_stats,
@@ -41,12 +42,14 @@ pub struct AppState {
pub public_url: String,
pub command_timeout: Duration,
pub enroll_token_ttl: Duration,
pub terminals: terminals::TerminalRegistry,
}
#[derive(Clone)]
pub struct AgentSession {
pub connection_id: String,
pub tx: mpsc::UnboundedSender<SessionEvent>,
pub capabilities: Vec<AgentCapability>,
}
#[derive(Clone)]
pub enum SessionEvent {
@@ -72,6 +75,10 @@ fn public_api_routes(ui_dist_dir: std::path::PathBuf) -> Router<AppState> {
.route("/healthz", get(api::healthz))
.route("/api/v1/agents/enroll", post(api::enroll))
.route("/api/v1/agent/ws", get(ws::agent_ws))
.route(
"/api/v1/agent/terminals/{terminal_id}/ws",
get(api::agent_terminal_ws),
)
}
fn control_api_routes() -> Router<AppState> {
@@ -135,6 +142,19 @@ fn control_api_routes() -> Router<AppState> {
"/api/v1/control/agents/{agent_id}/command",
post(api::run_command),
)
.route("/api/v1/control/terminals", post(api::create_terminal))
.route(
"/api/v1/control/terminals/{terminal_id}",
get(api::get_terminal).delete(api::close_terminal),
)
.route(
"/api/v1/control/terminals/{terminal_id}/attach",
post(api::attach_terminal),
)
.route(
"/api/v1/control/terminals/{terminal_id}/ws",
get(api::operator_terminal_ws),
)
}
/// Starts the control-plane HTTP and websocket surfaces and manages daemon lifecycle hooks.
@@ -157,6 +177,7 @@ pub async fn serve(daemon: config::DaemonConfig) -> Result<()> {
public_url: daemon.public_url.clone(),
command_timeout: daemon.command_timeout,
enroll_token_ttl: daemon.enroll_token_ttl,
terminals: terminals::TerminalRegistry::new(),
};
// Keep route classes explicit so edge policy can map directly:
@@ -0,0 +1,481 @@
use std::collections::{HashMap, VecDeque};
use std::sync::Arc;
use std::time::{Duration, Instant, SystemTime, UNIX_EPOCH};
use tokio::sync::{Mutex, mpsc};
use uuid::Uuid;
pub const TERMINAL_RELAY_QUEUE: usize = 32;
pub const TERMINAL_MAX_FRAME_BYTES: usize = 64 * 1024;
pub const TERMINAL_REPLAY_BYTES: usize = 256 * 1024;
pub const TERMINAL_MAX_SESSIONS_PER_AGENT: usize = 2;
pub const TERMINAL_ATTACH_TIMEOUT: Duration = Duration::from_secs(10);
pub const TERMINAL_DISCONNECT_GRACE: Duration = Duration::from_secs(15);
pub const TERMINAL_ABSOLUTE_TIMEOUT: Duration = Duration::from_secs(30 * 60);
const TERMINAL_TOMBSTONE_TTL: Duration = Duration::from_secs(5 * 60);
const TERMINAL_MAX_TOMBSTONES: usize = 1024;
#[derive(Clone, Debug)]
pub enum TerminalRelayFrame {
Binary(Vec<u8>),
Text(String),
Close,
}
#[derive(Clone)]
pub struct TerminalRegistry {
inner: Arc<Mutex<HashMap<String, TerminalSession>>>,
closed: Arc<Mutex<HashMap<String, Instant>>>,
}
struct TerminalSession {
agent_id: String,
created_at_unix: u64,
expires_at: Instant,
relay_token: Option<String>,
attachment_token: Option<String>,
agent_tx: Option<mpsc::Sender<TerminalRelayFrame>>,
pending_agent: VecDeque<TerminalRelayFrame>,
pending_agent_bytes: usize,
operator_tx: Option<mpsc::Sender<TerminalRelayFrame>>,
operator_detached_at: Option<Instant>,
replay: VecDeque<TerminalRelayFrame>,
replay_bytes: usize,
}
pub struct CreatedTerminal {
pub terminal_id: String,
pub relay_token: String,
pub attachment_token: String,
pub created_at_unix: u64,
}
impl Default for TerminalRegistry {
fn default() -> Self {
Self::new()
}
}
impl TerminalRegistry {
pub fn new() -> Self {
Self {
inner: Arc::new(Mutex::new(HashMap::new())),
closed: Arc::new(Mutex::new(HashMap::new())),
}
}
pub async fn create(&self, agent_id: String) -> Result<CreatedTerminal, &'static str> {
let mut sessions = self.inner.lock().await;
if sessions
.values()
.filter(|session| session.agent_id == agent_id)
.count()
>= TERMINAL_MAX_SESSIONS_PER_AGENT
{
return Err("agent_terminal_limit_reached");
}
let terminal_id = Uuid::new_v4().to_string();
let relay_token = new_token();
let attachment_token = new_token();
let created_at_unix = SystemTime::now()
.duration_since(UNIX_EPOCH)
.unwrap_or_default()
.as_secs();
sessions.insert(
terminal_id.clone(),
TerminalSession {
agent_id,
created_at_unix,
expires_at: Instant::now() + TERMINAL_ABSOLUTE_TIMEOUT,
relay_token: Some(relay_token.clone()),
attachment_token: Some(attachment_token.clone()),
agent_tx: None,
pending_agent: VecDeque::new(),
pending_agent_bytes: 0,
operator_tx: None,
operator_detached_at: None,
replay: VecDeque::new(),
replay_bytes: 0,
},
);
Ok(CreatedTerminal {
terminal_id,
relay_token,
attachment_token,
created_at_unix,
})
}
pub async fn remove(&self, terminal_id: &str) -> Option<String> {
let session = self.inner.lock().await.remove(terminal_id)?;
self.remember_closed(terminal_id).await;
if let Some(tx) = session.agent_tx {
let _ =
tokio::time::timeout(Duration::from_secs(1), tx.send(TerminalRelayFrame::Close))
.await;
}
if let Some(tx) = session.operator_tx {
let _ =
tokio::time::timeout(Duration::from_secs(1), tx.send(TerminalRelayFrame::Close))
.await;
}
Some(session.agent_id)
}
/// Reports whether a session ID was recently removed. Tombstones make
/// idempotent DELETE distinguishable from a completely unknown ID.
pub async fn was_closed(&self, terminal_id: &str) -> bool {
let mut closed = self.closed.lock().await;
prune_tombstones(&mut closed);
closed.contains_key(terminal_id)
}
async fn remember_closed(&self, terminal_id: &str) {
let mut closed = self.closed.lock().await;
prune_tombstones(&mut closed);
closed.insert(terminal_id.to_string(), Instant::now());
if closed.len() > TERMINAL_MAX_TOMBSTONES
&& let Some(oldest) = closed
.iter()
.min_by_key(|(_, closed_at)| **closed_at)
.map(|(terminal_id, _)| terminal_id.clone())
{
closed.remove(&oldest);
}
}
pub async fn remove_agent(&self, agent_id: &str) {
let terminal_ids = {
let sessions = self.inner.lock().await;
sessions
.iter()
.filter(|(_, session)| session.agent_id == agent_id)
.map(|(terminal_id, _)| terminal_id.clone())
.collect::<Vec<_>>()
};
for terminal_id in terminal_ids {
self.remove(&terminal_id).await;
}
}
pub async fn issue_attachment_token(&self, terminal_id: &str) -> Result<String, &'static str> {
let mut sessions = self.inner.lock().await;
let session = active_session(&mut sessions, terminal_id)?;
if session.operator_tx.is_some() {
return Err("terminal_operator_already_attached");
}
let token = new_token();
session.attachment_token = Some(token.clone());
Ok(token)
}
pub async fn attach_agent(
&self,
terminal_id: &str,
agent_id: &str,
relay_token: &str,
) -> Result<(mpsc::Receiver<TerminalRelayFrame>, Vec<TerminalRelayFrame>), &'static str> {
let mut sessions = self.inner.lock().await;
let session = active_session(&mut sessions, terminal_id)?;
if session.agent_id != agent_id {
return Err("terminal_agent_mismatch");
}
if session.agent_tx.is_some() {
return Err("terminal_agent_already_attached");
}
if session.relay_token.as_deref() != Some(relay_token) {
return Err("terminal_relay_token_invalid");
}
session.relay_token = None;
let (tx, rx) = mpsc::channel(TERMINAL_RELAY_QUEUE);
session.agent_tx = Some(tx);
let pending = session.pending_agent.drain(..).collect();
session.pending_agent_bytes = 0;
Ok((rx, pending))
}
pub async fn attach_operator(
&self,
terminal_id: &str,
attachment_token: &str,
) -> Result<(mpsc::Receiver<TerminalRelayFrame>, Vec<TerminalRelayFrame>), &'static str> {
let mut sessions = self.inner.lock().await;
let session = active_session(&mut sessions, terminal_id)?;
if session.operator_tx.is_some() {
return Err("terminal_operator_already_attached");
}
if session.attachment_token.as_deref() != Some(attachment_token) {
return Err("terminal_attachment_token_invalid");
}
session.attachment_token = None;
session.operator_detached_at = None;
let replay = session.replay.drain(..).collect();
session.replay_bytes = 0;
let (tx, rx) = mpsc::channel(TERMINAL_RELAY_QUEUE);
session.operator_tx = Some(tx);
Ok((rx, replay))
}
pub async fn relay_to_agent(
&self,
terminal_id: &str,
frame: TerminalRelayFrame,
) -> Result<(), &'static str> {
let tx = self
.inner
.lock()
.await
.get(terminal_id)
.and_then(|session| session.agent_tx.clone());
if let Some(tx) = tx {
return tx
.send(frame)
.await
.map_err(|_| "terminal_agent_disconnected");
}
let mut sessions = self.inner.lock().await;
let session = active_session(&mut sessions, terminal_id)?;
session.pending_agent_bytes += relay_frame_size(&frame);
session.pending_agent.push_back(frame);
while session.pending_agent_bytes > TERMINAL_REPLAY_BYTES {
if let Some(dropped) = session.pending_agent.pop_front() {
session.pending_agent_bytes -= relay_frame_size(&dropped);
} else {
break;
}
}
Ok(())
}
pub async fn relay_from_agent(
&self,
terminal_id: &str,
frame: TerminalRelayFrame,
) -> Result<(), &'static str> {
let operator_tx = self
.inner
.lock()
.await
.get(terminal_id)
.and_then(|session| session.operator_tx.clone());
if let Some(tx) = operator_tx {
match tx.send(frame).await {
Ok(()) => return Ok(()),
Err(err) => {
// The browser task may not have marked itself detached yet.
// Preserve this frame so that race does not kill the PTY.
let mut sessions = self.inner.lock().await;
let session = active_session(&mut sessions, terminal_id)?;
session.operator_tx = None;
session
.operator_detached_at
.get_or_insert_with(Instant::now);
push_replay(session, err.0);
return Ok(());
}
}
}
let mut sessions = self.inner.lock().await;
let session = active_session(&mut sessions, terminal_id)?;
push_replay(session, frame);
Ok(())
}
pub async fn reject(
&self,
terminal_id: &str,
agent_id: &str,
error_json: String,
) -> Result<(), &'static str> {
let matches_agent = self
.inner
.lock()
.await
.get(terminal_id)
.is_some_and(|session| session.agent_id == agent_id);
if !matches_agent {
return Err("terminal_agent_mismatch");
}
self.relay_from_agent(terminal_id, TerminalRelayFrame::Text(error_json))
.await?;
self.relay_from_agent(terminal_id, TerminalRelayFrame::Close)
.await
}
pub async fn detach_operator(&self, terminal_id: &str) -> Option<Instant> {
let mut sessions = self.inner.lock().await;
let session = sessions.get_mut(terminal_id)?;
session.operator_tx = None;
let detached_at = Instant::now();
session.operator_detached_at = Some(detached_at);
Some(detached_at)
}
pub async fn remove_if_still_detached(&self, terminal_id: &str, detached_at: Instant) -> bool {
let should_remove = self
.inner
.lock()
.await
.get(terminal_id)
.is_some_and(|session| session.operator_detached_at == Some(detached_at));
if should_remove {
self.remove(terminal_id).await;
}
should_remove
}
pub async fn summary(&self, terminal_id: &str) -> Option<(String, u64, bool, bool)> {
self.inner.lock().await.get(terminal_id).map(|session| {
(
session.agent_id.clone(),
session.created_at_unix,
session.agent_tx.is_some(),
session.operator_tx.is_some(),
)
})
}
}
fn active_session<'a>(
sessions: &'a mut HashMap<String, TerminalSession>,
terminal_id: &str,
) -> Result<&'a mut TerminalSession, &'static str> {
let session = sessions.get_mut(terminal_id).ok_or("terminal_not_found")?;
if session.expires_at <= Instant::now() {
return Err("terminal_expired");
}
Ok(session)
}
fn new_token() -> String {
format!("{}{}", Uuid::new_v4().simple(), Uuid::new_v4().simple())
}
fn prune_tombstones(closed: &mut HashMap<String, Instant>) {
closed.retain(|_, closed_at| closed_at.elapsed() < TERMINAL_TOMBSTONE_TTL);
}
fn relay_frame_size(frame: &TerminalRelayFrame) -> usize {
match frame {
TerminalRelayFrame::Binary(bytes) => bytes.len(),
TerminalRelayFrame::Text(text) => text.len(),
TerminalRelayFrame::Close => 0,
}
}
fn push_replay(session: &mut TerminalSession, frame: TerminalRelayFrame) {
session.replay_bytes += relay_frame_size(&frame);
session.replay.push_back(frame);
while session.replay_bytes > TERMINAL_REPLAY_BYTES {
if let Some(dropped) = session.replay.pop_front() {
session.replay_bytes -= relay_frame_size(&dropped);
} else {
break;
}
}
}
#[cfg(test)]
mod tests {
use super::*;
#[tokio::test]
async fn credentials_are_scoped_and_single_use() {
let registry = TerminalRegistry::new();
let created = registry.create("router".into()).await.expect("create");
assert!(
registry
.attach_agent(&created.terminal_id, "other", &created.relay_token)
.await
.is_err()
);
let _ = registry
.attach_agent(&created.terminal_id, "router", &created.relay_token)
.await
.expect("attach agent");
assert_eq!(
registry
.attach_agent(&created.terminal_id, "router", &created.relay_token)
.await
.expect_err("relay token is single use"),
"terminal_agent_already_attached"
);
registry
.attach_operator(&created.terminal_id, &created.attachment_token)
.await
.expect("attach operator");
assert!(
registry
.attach_operator(&created.terminal_id, &created.attachment_token)
.await
.is_err()
);
}
#[tokio::test]
async fn detached_output_replay_is_bounded() {
let registry = TerminalRegistry::new();
let created = registry.create("router".into()).await.expect("create");
for _ in 0..10 {
registry
.relay_from_agent(
&created.terminal_id,
TerminalRelayFrame::Binary(vec![0; TERMINAL_REPLAY_BYTES / 4]),
)
.await
.expect("buffer output");
}
let (_, replay) = registry
.attach_operator(&created.terminal_id, &created.attachment_token)
.await
.expect("attach operator");
assert!(replay.iter().map(relay_frame_size).sum::<usize>() <= TERMINAL_REPLAY_BYTES);
}
#[tokio::test]
async fn operator_input_waits_for_agent_attachment() {
let registry = TerminalRegistry::new();
let created = registry.create("router".into()).await.expect("create");
let resize = TerminalRelayFrame::Text(r#"{"type":"resize","rows":30,"cols":120}"#.into());
registry
.relay_to_agent(&created.terminal_id, resize)
.await
.expect("queue resize before agent attachment");
let (_, pending) = registry
.attach_agent(&created.terminal_id, "router", &created.relay_token)
.await
.expect("attach agent");
assert_eq!(pending.len(), 1);
assert!(matches!(pending[0], TerminalRelayFrame::Text(_)));
}
#[tokio::test]
async fn agent_can_hold_two_terminal_sessions() {
let registry = TerminalRegistry::new();
registry.create("router".into()).await.expect("first");
registry.create("router".into()).await.expect("second");
let third = registry.create("router".into()).await;
assert_eq!(third.err(), Some("agent_terminal_limit_reached"));
}
#[tokio::test]
async fn removed_session_is_distinct_from_unknown_session() {
let registry = TerminalRegistry::new();
let created = registry.create("router".into()).await.expect("create");
assert!(!registry.was_closed(&created.terminal_id).await);
assert!(!registry.was_closed("never-existed").await);
registry.remove(&created.terminal_id).await.expect("remove");
assert!(registry.was_closed(&created.terminal_id).await);
assert!(!registry.was_closed("never-existed").await);
}
}
+61 -17
View File
@@ -8,7 +8,9 @@ use std::time::Instant;
use tokio::sync::mpsc;
use tracing::{debug, info, info_span, warn};
use uuid::Uuid;
use wakey_agent::protocol::{ErrorPayload, RequestId, ServerMessage};
use wakey_agent::protocol::{
AgentCapability, ErrorPayload, RequestId, ServerMessage, TerminalControl, TerminalId,
};
use wakey_core::Device;
use crate::runtime::{AgentReply, AgentSession, AppState, SessionEvent};
@@ -19,6 +21,8 @@ use crate::state::AuditEventInput;
enum IncomingClientMessage {
Hello {
agent_id: String,
#[serde(default)]
capabilities: Vec<AgentCapability>,
},
Auth {
agent_id: String,
@@ -39,6 +43,17 @@ enum IncomingClientMessage {
request_id: RequestId,
error: ErrorPayload,
},
TerminalRejected {
terminal_id: TerminalId,
error: ErrorPayload,
},
}
#[derive(Default)]
struct AgentConnectionState {
authed_agent_id: Option<String>,
hello_at: Option<Instant>,
capabilities: Vec<AgentCapability>,
}
pub async fn agent_ws(ws: WebSocketUpgrade, State(state): State<AppState>) -> impl IntoResponse {
@@ -80,8 +95,7 @@ async fn handle_agent_socket(state: AppState, socket: WebSocket) {
debug!("websocket writer loop ended");
});
let mut authed_agent_id: Option<String> = None;
let mut hello_at: Option<Instant> = None;
let mut connection = AgentConnectionState::default();
loop {
let frame = read.next().await;
@@ -103,8 +117,7 @@ async fn handle_agent_socket(state: AppState, socket: WebSocket) {
&state,
&tx,
&connection_id,
&mut authed_agent_id,
&mut hello_at,
&mut connection,
connected_at,
&text,
)
@@ -126,7 +139,7 @@ async fn handle_agent_socket(state: AppState, socket: WebSocket) {
}
}
if let Some(agent_id) = authed_agent_id {
if let Some(agent_id) = connection.authed_agent_id {
info!(agent_id = %agent_id, "agent disconnected");
let mut sessions = state.sessions.write().await;
let should_remove = sessions
@@ -136,6 +149,8 @@ async fn handle_agent_socket(state: AppState, socket: WebSocket) {
if should_remove {
sessions.remove(&agent_id);
}
drop(sessions);
state.terminals.remove_agent(&agent_id).await;
if let Err(err) = state
.store
.append_audit_event(AuditEventInput {
@@ -163,8 +178,7 @@ async fn process_agent_text(
state: &AppState,
tx: &mpsc::UnboundedSender<SessionEvent>,
connection_id: &str,
authed_agent_id: &mut Option<String>,
hello_at: &mut Option<Instant>,
connection: &mut AgentConnectionState,
connected_at: Instant,
text: &str,
) -> Result<()> {
@@ -172,20 +186,26 @@ async fn process_agent_text(
serde_json::from_str(text).context("invalid client websocket payload")?;
match message {
IncomingClientMessage::Hello { agent_id } => {
IncomingClientMessage::Hello {
agent_id,
capabilities,
} => {
let now = Instant::now();
if hello_at.is_none() {
*hello_at = Some(now);
if connection.hello_at.is_none() {
connection.hello_at = Some(now);
}
let connect_to_hello_ms = connected_at.elapsed().as_millis() as u64;
info!(agent_id = %agent_id, connect_to_hello_ms, "agent hello received");
connection.capabilities = capabilities;
}
IncomingClientMessage::Auth {
agent_id,
agent_token,
} => {
let connect_to_auth_ms = connected_at.elapsed().as_millis() as u64;
let hello_to_auth_ms = hello_at.map(|t| now_duration_ms(t.elapsed()));
let hello_to_auth_ms = connection
.hello_at
.map(|time| now_duration_ms(time.elapsed()));
if !state
.store
.verify_agent_token(&agent_id, &agent_token)
@@ -219,9 +239,10 @@ async fn process_agent_text(
AgentSession {
connection_id: connection_id.to_string(),
tx: tx.clone(),
capabilities: connection.capabilities.clone(),
},
);
*authed_agent_id = Some(agent_id.clone());
connection.authed_agent_id = Some(agent_id.clone());
info!(agent_id = %agent_id, connect_to_auth_ms, hello_to_auth_ms = hello_to_auth_ms.unwrap_or(0), "agent authenticated");
if let Err(err) = state
.store
@@ -246,14 +267,14 @@ async fn process_agent_text(
let _ = tx.send(SessionEvent::Message(ServerMessage::SyncDeviceSnapshot));
}
IncomingClientMessage::Heartbeat { agent_id } => {
if authed_agent_id.as_deref() != Some(agent_id.as_str()) {
if connection.authed_agent_id.as_deref() != Some(agent_id.as_str()) {
anyhow::bail!("heartbeat for unauthenticated or mismatched agent");
}
ensure_current_session(state, &agent_id, connection_id).await?;
debug!(agent_id = %agent_id, "heartbeat received");
}
IncomingClientMessage::DeviceSnapshot { agent_id, devices } => {
if authed_agent_id.as_deref() != Some(agent_id.as_str()) {
if connection.authed_agent_id.as_deref() != Some(agent_id.as_str()) {
anyhow::bail!("device_snapshot for unauthenticated or mismatched agent");
}
ensure_current_session(state, &agent_id, connection_id).await?;
@@ -272,7 +293,8 @@ async fn process_agent_text(
}
}
IncomingClientMessage::Result { request_id, result } => {
let agent_id = authed_agent_id
let agent_id = connection
.authed_agent_id
.as_deref()
.ok_or_else(|| anyhow::anyhow!("result before auth"))?;
ensure_current_session(state, agent_id, connection_id).await?;
@@ -284,7 +306,8 @@ async fn process_agent_text(
}
}
IncomingClientMessage::Error { request_id, error } => {
let agent_id = authed_agent_id
let agent_id = connection
.authed_agent_id
.as_deref()
.ok_or_else(|| anyhow::anyhow!("error before auth"))?;
ensure_current_session(state, agent_id, connection_id).await?;
@@ -295,6 +318,26 @@ async fn process_agent_text(
debug!(request_id = %key, "dropping unsolicited error from agent");
}
}
IncomingClientMessage::TerminalRejected { terminal_id, error } => {
let agent_id = connection
.authed_agent_id
.as_deref()
.ok_or_else(|| anyhow::anyhow!("terminal rejection before auth"))?;
ensure_current_session(state, agent_id, connection_id).await?;
let error_json = serde_json::to_string(&TerminalControl::Error {
code: error.code,
message: error.message,
})?;
if let Err(code) = state
.terminals
.reject(terminal_id.as_str(), agent_id, error_json)
.await
{
debug!(terminal_id = %terminal_id, agent_id, code, "dropping rejection for inactive terminal");
return Ok(());
}
warn!(terminal_id = %terminal_id, agent_id, "agent rejected terminal request");
}
}
Ok(())
@@ -349,6 +392,7 @@ mod tests {
AgentSession {
connection_id: "conn-new".to_string(),
tx,
capabilities: Vec::new(),
},
);
+9 -1
View File
@@ -23,7 +23,7 @@ impl TerminalPty {
pty.resize(Size::new(rows, cols))
.context("failed to set initial PTY size")?;
let command = Command::new(program);
let command = Command::new(program).kill_on_drop(true);
let child = command
.spawn(pts)
.with_context(|| format!("failed to spawn {} in PTY", program.display()))?;
@@ -37,6 +37,14 @@ impl TerminalPty {
}
}
/// Resizes an owned PTY writer without exposing `pty-process` protocol types
/// to higher-level crates.
pub fn resize_terminal(writer: &OwnedWritePty, rows: u16, cols: u16) -> Result<()> {
writer
.resize(Size::new(rows, cols))
.context("failed to resize PTY")
}
#[cfg(test)]
mod tests {
use std::time::Duration;