Enable SSH only if any keys exist

usr/lib/python3.6/vmmgr/remote.py

@@ -18,6 +18,13 @@ def set_authorized_keys(keys):
     # Saves content of root's authorized_files
     with open(AUTHORIZED_KEYS, 'w') as f:
         f.write(keys)
+    # Enable or disable SSH service
+    if keys.strip():
+        subprocess.run(['/sbin/rc-update', 'add', 'sshd', 'boot'])
+        subprocess.run(['/sbin/service', 'sshd', 'start'])
+    else:
+        subprocess.run(['/sbin/service', 'sshd', 'stop'])
+        subprocess.run(['/sbin/rc-update', 'del', 'sshd', 'boot'])
 
 def is_wireguard_running():
     # Returns status of wg0 interface (inferred from existence of its config file)

usr/share/vmmgr/templates/setup-remote.html

@@ -3,7 +3,7 @@
 {% block body %}
 <div class="setup-box">
     <h2>SSH klíče</h2>
-    <p>Obsah souboru <em>authorized_hosts</em> uživatele root.</p>
+    <p>Obsah souboru <em>authorized_keys</em> uživatele root.</p>
     <form id="update-ssh-keys" action="/update-ssh-keys" method="post">
         <textarea name="ssh-keys" id="ssh-keys">{{ authorized_keys }}</textarea>
         <input type="submit" value="Nastavit klíče">