408 lines
15 KiB
JavaScript
408 lines
15 KiB
JavaScript
'use strict';
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const router = require('express').Router();
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const permission = require('../utils/permission');
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const { Resource, ResourceEdge, ResourceGroup } = require('../models/resource');
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const { Group } = require('../models/group_ldap');
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const { User } = require('../models/user_ldap');
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const { cnFromDn } = require('../utils/user_groups');
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const { projectResources } = require('@simpleworkjs/directory-schema');
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const SUPER_ADMIN_GROUP = permission.SUPER_ADMIN_GROUP;
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// Make `childCn` a member of `parentCn`, i.e. everyone in the child is
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// transitively in the parent. Idempotent and non-fatal: "already a member" is
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// the goal state, and a missing group (e.g. app_super_admin absent on a
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// directory seeded by an older entrypoint) is a reason to skip, not to fail the
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// caller's real work.
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async function nestGroup(childCn, parentCn) {
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try {
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const parent = await Group.get(parentCn);
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const child = await Group.get(childCn);
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if (await Group.wouldCycle(parentCn, child.dn)) {
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console.error(`nestGroup: refusing ${childCn} -> ${parentCn} (would create a cycle)`);
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return;
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}
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await parent.addMember({ dn: child.dn });
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} catch (err) {
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const benign = err.name === 'TypeOrValueExistsError' || err.code === 20 || err.name === 'GroupNotFound';
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if (!benign) console.error(`nestGroup: ${childCn} -> ${parentCn} failed:`, err.message);
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}
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}
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// Require the admin group
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router.use(async (req, res, next) => {
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try {
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await permission.byGroup(req.user, ['app_sso_directory_admin', 'app_sso_admin']);
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next();
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} catch(err) {
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next(err);
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}
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});
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// --- Resources ---
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router.get('/resources', async (req, res, next) => {
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try {
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let resources = await Resource.list();
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resources = resources.filter(r => {
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const isAuto = r.metadata?.discovery_sources?.length > 0 && !r.metadata.discovery_sources.includes('manual');
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const isManaged = r.metadata?.managed === true;
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return !isAuto || isManaged;
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});
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// Even admins never receive secret metadata (e.g. client_secret_hash) over
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// the wire; projectResources strips it unconditionally.
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res.json({ results: projectResources(resources, { fullMetadata: true }) });
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} catch (err) { next(err); }
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});
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router.post('/resources', async (req, res, next) => {
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try {
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if (!req.body.hostId && req.body.parentSlug) {
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const parents = await Resource.list({ where: { slug: req.body.parentSlug } });
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if (parents.length > 0) req.body.hostId = parents[0].id;
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}
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if (req.body.kind === 'host' && !req.body.hostId) {
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return res.status(400).json({ error: 'Hosts must have a parent Site or Host' });
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}
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if (req.body.kind === 'service' && !req.body.hostId) {
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return res.status(400).json({ error: 'Services must have a parent Host' });
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}
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if (req.body.kind === 'oauth' && !req.body.hostId) {
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return res.status(400).json({ error: 'OAuth Integrations must have a parent Service' });
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}
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req.body.owner = req.body.owner || req.user.uid;
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const now = Date.now();
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req.body.created_by = req.body.created_by || req.user.uid;
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req.body.created_on = now;
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req.body.updated_by = req.user.uid;
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req.body.updated_on = now;
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let r;
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if (req.body.kind === 'oauth') {
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const { OAuthClient } = require('../models/oauth_client');
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// Pass created_by explicitly for the wrapper (overrides the generic
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// assignment above -- this is OAuthClient-wrapper-specific behavior).
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req.body.created_by = req.body.owner;
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// In the UI we might pass slug, but OAuthClient wrapper expects name
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r = await OAuthClient.add(req.body);
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} else {
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r = await Resource.create(req.body);
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}
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if ((r.kind === 'host' || r.kind === 'service' || r.kind === 'oauth') && req.body.hostId) {
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await ResourceEdge.create({ parentId: req.body.hostId, childId: r.id, relation: r.kind === 'oauth' ? 'oauth' : 'hosts' });
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}
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if (r.kind === 'host' || r.kind === 'service') {
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const siteSlug = await Resource.findAncestorSiteSlug(r.id);
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const groupCn = suffix => (siteSlug ? `${siteSlug}_${r.slug}_${suffix}` : `${r.slug}_${suffix}`);
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const createGroup = async (suffix, accessLevel) => {
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const cn = groupCn(suffix);
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try {
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await Group.add({
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name: cn,
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owner: req.user.dn,
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description: `${suffix === 'admin' ? 'Admin' : 'Access'} group for ${r.name}`
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});
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} catch (err) {
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if (err.name !== 'EntryAlreadyExistsError' && err.code !== 68) {
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console.error(`Failed to create LDAP group ${cn}:`, err);
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}
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}
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try {
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await ResourceGroup.create({ resourceId: r.id, groupCn: cn, accessLevel });
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} catch(err) { /* ignore duplicate links */ }
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};
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await createGroup('access', 'member');
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await createGroup('admin', 'owner');
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// Wire up the two standing relationships every resource has, as nesting
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// rather than as membership that has to be maintained per resource:
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//
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// app_super_admin -> <slug>_admin cross-app super admins administer
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// every resource, automatically
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// <slug>_admin -> <slug>_access administering something implies
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// being able to use it
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//
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// Before nesting, both of these could only be expressed by adding every
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// super admin to every new group by hand -- which nobody does, so the
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// groups drifted. A failure here must not fail resource creation: the
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// resource and its groups already exist and the nesting is repairable.
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await nestGroup(groupCn('admin'), groupCn('access'));
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await nestGroup(SUPER_ADMIN_GROUP, groupCn('admin'));
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}
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res.json({ results: r });
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} catch (err) {
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if (err.name === 'SequelizeUniqueConstraintError') {
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return res.status(400).json({ error: 'A resource with this slug already exists.' });
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}
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if (err.name === 'SequelizeValidationError') {
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return res.status(400).json({ error: err.message });
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}
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next(err);
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}
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});
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router.put('/resources/:id', async (req, res, next) => {
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try {
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// Validate before loading anything -- a rejected body should never have
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// touched the store.
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if (req.body.kind === 'host' && !req.body.hostId) {
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return res.status(400).json({ error: 'Hosts must have a parent Site or Host' });
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}
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if (req.body.kind === 'service' && !req.body.hostId) {
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return res.status(400).json({ error: 'Services must have a parent Host' });
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}
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if (req.body.kind === 'oauth' && !req.body.hostId) {
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return res.status(400).json({ error: 'OAuth Integrations must have a parent Service' });
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}
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// OAuthClient is a wrapper over the same `resource` row, but its .update()
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// handles the oauth-specific body fields (redirect_uris, scopes,
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// token_lifetime) that a bare Resource would drop into metadata unvalidated.
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const { OAuthClient } = require('../models/oauth_client');
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const model = req.body.kind === 'oauth' ? OAuthClient : Resource;
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const r = await model.get(req.params.id);
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if (!r) return res.status(404).json({ error: 'Not found' });
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req.body.updated_by = req.user.uid;
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req.body.updated_on = Date.now();
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const updated = await r.update(req.body);
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if ((updated.kind === 'host' || updated.kind === 'service' || updated.kind === 'oauth') && req.body.hostId !== undefined) {
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const existingEdges = await ResourceEdge.list({ where: { childId: r.id } });
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for (const e of existingEdges) {
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if (e.relation === 'hosts' || e.relation === 'oauth') await e.delete();
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}
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if (req.body.hostId) {
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await ResourceEdge.create({ parentId: req.body.hostId, childId: r.id, relation: updated.kind === 'oauth' ? 'oauth' : 'hosts' });
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}
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}
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res.json({ results: updated });
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} catch (err) {
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next(err);
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}
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});
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router.post('/resources/:id/rotate-secret', async (req, res, next) => {
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try {
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const { OAuthClient } = require('../models/oauth_client');
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const client = await OAuthClient.get(req.params.id);
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const secret = await client.rotateSecret();
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res.json({ secret });
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} catch (err) {
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next(err);
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}
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});
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router.delete('/resources/:id', async (req, res, next) => {
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try {
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const r = await Resource.get(req.params.id);
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if (!r) return res.status(404).json({ error: 'Not found' });
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// Clear the dependents FIRST. There is no transaction here, so ordering is
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// the only thing protecting us: if a dependent delete throws after the
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// resource row is gone, the leftovers are edges/links pointing at a
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// nonexistent id -- invisible in the UI and poisonous to getGraph(). Failing
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// with the resource still present is the recoverable direction (retry the
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// delete); the caller sees the error either way.
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const edgesParent = await ResourceEdge.list({ where: { parentId: req.params.id } });
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const edgesChild = await ResourceEdge.list({ where: { childId: req.params.id } });
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const groups = await ResourceGroup.list({ where: { resourceId: req.params.id } });
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for (const e of [...edgesParent, ...edgesChild]) await e.delete();
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for (const g of groups) await g.delete();
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await r.delete();
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res.json({ results: true });
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} catch (err) { next(err); }
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});
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// --- Edges ---
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router.get('/edges', async (req, res, next) => {
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try {
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const edges = await ResourceEdge.list();
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res.json({ results: edges });
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} catch (err) { next(err); }
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});
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router.post('/edges', async (req, res, next) => {
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try {
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const edge = await ResourceEdge.create(req.body);
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res.json({ results: edge });
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} catch (err) { next(err); }
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});
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router.delete('/edges/:id', async (req, res, next) => {
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try {
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const edge = await ResourceEdge.get(req.params.id);
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if (!edge) return res.status(404).json({ error: 'Not found' });
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await edge.delete();
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res.json({ results: true });
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} catch (err) { next(err); }
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});
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// --- Groups ---
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router.get('/groups', async (req, res, next) => {
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try {
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const groups = await ResourceGroup.list();
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res.json({ results: groups });
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} catch (err) { next(err); }
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});
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router.post('/groups', async (req, res, next) => {
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try {
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const g = await ResourceGroup.create(req.body);
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res.json({ results: g });
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} catch (err) { next(err); }
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});
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router.delete('/groups/:id', async (req, res, next) => {
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try {
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const g = await ResourceGroup.get(req.params.id);
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if (!g) return res.status(404).json({ error: 'Not found' });
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await g.delete();
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res.json({ results: true });
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} catch (err) { next(err); }
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});
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// --- Access visibility ---
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//
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// The two questions an access-control pane has to answer, neither of which the
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// directory could answer before: "who can reach this resource" (a column on the
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// table, rather than three clicks into a modal) and "what can this user reach"
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// (which had no UI at all). Both are joins of the same two sets, so both are
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// served from one cached Group.listDetail() rather than a lookup per row.
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// dn -> uid, so member DNs can be reported as the uids admins actually think in.
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async function dnToUidMap() {
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const users = await User.listDetail();
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return new Map(users.map(u => [String(u.dn).toLowerCase(), u.uid]));
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}
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// GET /access-summary — { resourceId: { groups: [...], memberCount } }
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router.get('/access-summary', async (req, res, next) => {
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try {
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const [links, groups, uidByDn] = await Promise.all([
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ResourceGroup.list(),
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Group.listDetail(),
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dnToUidMap(),
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]);
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const groupByCn = new Map(groups.map(g => [g.cn, g]));
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const summary = {};
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for (const link of links) {
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const group = groupByCn.get(link.groupCn);
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// A link whose LDAP group has been deleted out from under it: report it
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// rather than skipping, since a dangling link grants nothing and the
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// admin needs to see that it is dead.
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//
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// Counts come from the transitive closure, not from `member`. Reading the
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// attribute would report only who is listed on the group, missing anyone
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// who reaches it through a nested group -- and since app_super_admin is
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// nested into every resource's _admin group, that is not an edge case.
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let members = [];
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if (group) {
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const eff = await Group.effectiveMembers(link.groupCn);
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members = eff.effective.map(dn => uidByDn.get(String(dn).toLowerCase()) || cnFromDn(dn));
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}
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const entry = summary[link.resourceId] || (summary[link.resourceId] = { groups: [], members: [] });
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entry.groups.push({
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cn: link.groupCn,
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accessLevel: link.accessLevel,
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exists: !!group,
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memberCount: members.length,
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});
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for (const uid of members) {
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if (!entry.members.includes(uid)) entry.members.push(uid);
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}
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}
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for (const id of Object.keys(summary)) {
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summary[id].memberCount = summary[id].members.length;
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}
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res.json({ results: summary });
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} catch (err) { next(err); }
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});
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// GET /user-access/:uid — every resource a given user can reach, and via which
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// group. This is the reverse lookup; previously an admin could only see their
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// own access, via /api/discovery/me.
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router.get('/user-access/:uid', async (req, res, next) => {
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try {
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const user = await User.get({ uid: req.params.uid });
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if (!user) return res.status(404).json({ error: 'User not found' });
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const dn = String(user.dn).toLowerCase();
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const groups = await Group.listDetail();
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const memberOf = groups
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.filter(g => [].concat(g.member || []).some(m => String(m).toLowerCase() === dn))
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.map(g => g.cn);
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const [links, resources] = await Promise.all([ResourceGroup.list(), Resource.list()]);
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const byId = new Map(resources.map(r => [r.id, r]));
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const results = [];
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for (const link of links) {
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if (!memberOf.includes(link.groupCn)) continue;
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const resource = byId.get(link.resourceId);
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if (!resource) continue;
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results.push({
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id: resource.id,
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name: resource.name,
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slug: resource.slug,
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kind: resource.kind,
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groupCn: link.groupCn,
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accessLevel: link.accessLevel,
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});
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}
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res.json({ results: { uid: user.uid, groups: memberOf, resources: results } });
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} catch (err) { next(err); }
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});
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// Tail the last `lines` lines of a log file without shelling out. Reads at most
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// the trailing MAX_TAIL_BYTES so an unrotated multi-GB log can't blow up the
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// heap. A missing/unreadable file is normal (the log only exists once slapd has
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// written to it), so it yields '' rather than an error.
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const MAX_TAIL_BYTES = 256 * 1024;
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async function tailFile(filePath, lines = 100) {
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const fs = require('fs/promises');
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let fh;
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try {
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fh = await fs.open(filePath, 'r');
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const { size } = await fh.stat();
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const start = Math.max(0, size - MAX_TAIL_BYTES);
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const buf = Buffer.alloc(Math.min(size, MAX_TAIL_BYTES));
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await fh.read(buf, 0, buf.length, start);
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const text = buf.toString('utf8');
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// A partial first line when we started mid-file; drop it.
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const rows = (start > 0 ? text.slice(text.indexOf('\n') + 1) : text).split('\n');
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return rows.slice(-lines).join('\n');
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} catch (err) {
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return '';
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} finally {
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if (fh) await fh.close().catch(() => {});
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}
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}
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router.get('/audit-logs', async (req, res, next) => {
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try {
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const [ldap, oauth, audit] = await Promise.all([
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tailFile('/var/lib/ldap/slapd.log'),
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tailFile('/var/lib/ldap/oauth.log'),
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tailFile('/var/lib/ldap/auditlog.ldif'),
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]);
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res.json({ results: { ldap, oauth, audit } });
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} catch (err) { next(err); }
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});
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module.exports = router;
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