From df6d0625f19f37711b646d05527c77c78e0d9016 Mon Sep 17 00:00:00 2001
From: Eric Mc Sween <eric.mcsween@overleaf.com>
Date: Thu, 21 Nov 2019 07:42:45 -0500
Subject: [PATCH] Merge pull request #2368 from
 overleaf/ew-ukamf-metadata-processor-cli

ukamf metadata processor cli

GitOrigin-RevId: f823a1dca231546f3ab67c47f6443e56b50e30d1
---
 .../web/scripts/ukamf/metadata-processor.js   | 42 +++++++++++++++++
 services/web/scripts/ukamf/ukamf-db.js        | 31 +++++++++++++
 services/web/scripts/ukamf/ukamf-entity.js    | 45 +++++++++++++++++++
 3 files changed, 118 insertions(+)
 create mode 100644 services/web/scripts/ukamf/metadata-processor.js
 create mode 100644 services/web/scripts/ukamf/ukamf-db.js
 create mode 100644 services/web/scripts/ukamf/ukamf-entity.js

diff --git a/services/web/scripts/ukamf/metadata-processor.js b/services/web/scripts/ukamf/metadata-processor.js
new file mode 100644
index 0000000000..f657a66be3
--- /dev/null
+++ b/services/web/scripts/ukamf/metadata-processor.js
@@ -0,0 +1,42 @@
+'use strict'
+
+/**
+ * Run with: node metadata-processor /path/ukamf.xml http://idp/entity/id
+ *
+ * The ukamf metadata xml file can be downloaded from:
+ *     http://metadata.ukfederation.org.uk/
+ *
+ * The entity id should be provided by the university.
+ */
+
+const UKAMFDB = require('./ukamf-db')
+
+main().catch(err => {
+  console.error(err.stack)
+})
+
+async function main() {
+  const [, , file, entityId] = process.argv
+
+  console.log(`loading file ${file}`)
+
+  const ukamfDB = new UKAMFDB(file)
+  await ukamfDB.init()
+
+  const entity = ukamfDB.findByEntityID(entityId)
+  if (!entity) {
+    throw new Error(`could not find entity for ${entityId}`)
+  }
+  const samlConfig = entity.getSamlConfig()
+
+  console.log(`UPDATE universities SET
+  sso_entity_id = '${entityId}',
+  sso_entry_point = '${samlConfig.entryPoint}',
+  sso_cert = '${samlConfig.cert}',
+  sso_user_id_attribute = 'eduPersonPrincipalName',
+  sso_user_email_attribute = 'mail',
+  sso_license_entitlement_attribute = 'eduPersonPrincipalName',
+  sso_license_entitlement_matcher = '.'
+  WHERE id =
+  `)
+}
diff --git a/services/web/scripts/ukamf/ukamf-db.js b/services/web/scripts/ukamf/ukamf-db.js
new file mode 100644
index 0000000000..bfca7b1e47
--- /dev/null
+++ b/services/web/scripts/ukamf/ukamf-db.js
@@ -0,0 +1,31 @@
+'use strict'
+
+const fs = require('fs-extra')
+const xml2js = require('xml2js')
+
+const UKAMFEntity = require('./ukamf-entity')
+
+class UKAMFDB {
+  constructor(file) {
+    this.file = file
+  }
+
+  async init() {
+    const data = await fs.readFile(this.file, 'utf8')
+    const parser = new xml2js.Parser()
+    const xml = await parser.parseStringPromise(data)
+
+    this.entities = xml.EntitiesDescriptor.EntityDescriptor
+  }
+
+  findByEntityID(matcher) {
+    const entity = this.entities.find(
+      matcher instanceof RegExp
+        ? e => e.$.entityID.match(matcher)
+        : e => e.$.entityID === matcher
+    )
+    return entity ? new UKAMFEntity(entity) : null
+  }
+}
+
+module.exports = UKAMFDB
diff --git a/services/web/scripts/ukamf/ukamf-entity.js b/services/web/scripts/ukamf/ukamf-entity.js
new file mode 100644
index 0000000000..6a8f8a133f
--- /dev/null
+++ b/services/web/scripts/ukamf/ukamf-entity.js
@@ -0,0 +1,45 @@
+'use strict'
+
+const _ = require('lodash')
+
+class UKAMFEntity {
+  constructor(data) {
+    this.data = data
+  }
+
+  getSamlConfig() {
+    const idp = this.data.IDPSSODescriptor[0]
+    const keys = idp.KeyDescriptor
+    const signingKey = keys.find(key => _.get(key, ['$', 'use']) === 'signing')
+
+    let cert = _.get(signingKey, [
+      'ds:KeyInfo',
+      0,
+      'ds:X509Data',
+      0,
+      'ds:X509Certificate',
+      0
+    ])
+    if (!cert) {
+      throw new Error('no cert')
+    }
+    cert = cert.replace(/\s/g, '')
+
+    let entryPoint = idp.SingleSignOnService.find(
+      sso =>
+        _.get(sso, ['$', 'Binding']) ===
+        'urn:oasis:names:tc:SAML:2.0:bindings:HTTP-Redirect'
+    )
+    entryPoint = _.get(entryPoint, ['$', 'Location'])
+    if (!entryPoint) {
+      throw new Error('no entryPoint')
+    }
+
+    return {
+      cert,
+      entryPoint
+    }
+  }
+}
+
+module.exports = UKAMFEntity