[Init] Initial commit - NetMesh terminal manager

domain/sshConnectionTimeouts.ts

@@ -0,0 +1,36 @@
+import type { Host } from './models.ts';
+
+export const DEFAULT_SSH_TCP_CONNECT_TIMEOUT_SECONDS = 20;
+export const DEFAULT_SSH_AUTH_READY_TIMEOUT_SECONDS = 120;
+export const MAX_SSH_CONNECTION_TIMEOUT_SECONDS = 3600;
+
+const normalizeTimeoutSeconds = (value: unknown, fallback: number): number => (
+  typeof value === 'number'
+  && Number.isFinite(value)
+  && value >= 1
+  && value <= MAX_SSH_CONNECTION_TIMEOUT_SECONDS
+    ? Math.round(value)
+    : fallback
+);
+
+export const sanitizeOptionalSshTimeoutSeconds = (value: unknown): number | undefined => (
+  typeof value === 'number'
+  && Number.isFinite(value)
+  && value >= 1
+  && value <= MAX_SSH_CONNECTION_TIMEOUT_SECONDS
+    ? Math.round(value)
+    : undefined
+);
+
+export const resolveHostSshConnectionTimeouts = (
+  host: Pick<Host, 'sshTcpConnectTimeoutSeconds' | 'sshAuthReadyTimeoutSeconds'>,
+) => ({
+  tcpConnectTimeoutSeconds: normalizeTimeoutSeconds(
+    host.sshTcpConnectTimeoutSeconds,
+    DEFAULT_SSH_TCP_CONNECT_TIMEOUT_SECONDS,
+  ),
+  authReadyTimeoutSeconds: normalizeTimeoutSeconds(
+    host.sshAuthReadyTimeoutSeconds,
+    DEFAULT_SSH_AUTH_READY_TIMEOUT_SECONDS,
+  ),
+});