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wmantly 8f0158eb9f Add LDAP byte-pump tunnel, secrets rendering, and IAM engine
See CHANGELOG.md for the full breakdown. Summary:

- ldap_tunnel.go: serves a local unix socket for SSSD/PAM and relays raw
  bytes to the SSO over the existing WSS channel (ldap_tunnel messages);
  the agent never parses LDAP (DESIGN.md §4). Adds safeWriter to
  serialize WebSocket writes now that telemetry, heartbeat, the LDAP
  tunnel, and command responses all share one connection.
- secrets.go: renders local templates ({{ bao "path#key" }} placeholders)
  by fetching node-scoped values from the SSO and writing the target
  atomically at 0600, on a signed render_secrets command (DESIGN.md §5).
  demo/ has minimal bash + Node consumers of the rendered file.
- iam.go: applies signed node IAM pushes -- sudoers.d rules (visudo -c
  validated), SSH AuthorizedKeysCommand keys, /etc/security/access.conf,
  and revocation via sss_cache -E + pkill -u (DESIGN.md §6).
- Capability reporting: the agent's enabled capabilities ride along in
  its discovery frame so the SSO can show them in the Directory.
- DESIGN.md: the v2 protocol design this implements.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
2026-08-07 17:12:58 -04:00

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JavaScript

// Demo: a 3rd-party node app reads the secret the theta-agent rendered to disk.
const fs = require('fs');
const path = '/etc/theta/rendered/db.env';
console.log('=== node app reads the rendered secret ===');
if (fs.existsSync(path)) {
const env = fs.readFileSync(path, 'utf8');
const db = {};
for (const line of env.split('\n')) {
const m = /^(\w+)="(.*)"$/.exec(line.trim());
if (m) db[m[1]] = m[2];
}
console.log('DB_USER=' + db.DB_USER);
console.log('DB_PASS=' + db.DB_PASS);
} else {
console.error('rendered secret not found — run render_secrets first');
process.exit(1);
}