Add lamassu-revoke and lamassu-users (#270)

* lamassu-list-users

Lists registered users to the admin panel

* Add in unregister function to revoke token access

* Create lamassu-revoke

* Changed name to lamassu-users

* Update login.js

* Update login.js

* Add lamassu-users & lamassu revoke to package.json

* Re-add missing comma.

bin/lamassu-revoke

@@ -0,0 +1,20 @@
+#!/usr/bin/env node
+
+const db = require('../lib/db')
+
+const argv = process.argv.slice(2)
+
+if (argv.length !== 1) {
+  console.log('Usage: lamassu-revoke <user>')
+  console.log('Revokes admin panel access from a specific user.')
+  process.exit(1)
+}
+
+const name = argv[0]
+
+const sql = `delete from user_tokens where name = $1 RETURNING *;`
+
+return db.result(sql, [name], r => r.rowCount)
+    .then(r => {if(r==0){console.log('could not find user.')}
+            else{console.log(name + ' removed successfully.')}})
+.then(() => process.exit(0))

bin/lamassu-users

@@ -0,0 +1,9 @@
+#!/usr/bin/env bash
+set -e
+
+if [ "$(whoami)" != "root" ]; then
+  echo -e "This script has to be run as \033[1mroot\033[0m user"
+  exit 3
+fi
+
+su - postgres -c "psql \"lamassu\" -Atc \"select * from user_tokens\""