Add legacy real-time log

Clients in ogLive offer a web page with lighttpd that shows a real-time
log. This commit links this log in ogcp.

Future patches will deprecate this log functionality in favour of more
robust solutions.

ogcp/templates/commands.html

@@ -42,5 +42,7 @@
          form="scopesForm" formaction="{{ url_for('action_mode') }}" formmethod="get">
   <input class="btn btn-light" type="submit" value="{{ _('Log') }}"
          form="scopesForm" formaction="{{ url_for('action_legacy_log') }}" formmethod="get">
+  <input class="btn btn-light" type="submit" value="{{ _('Real time log') }}"
+         form="scopesForm" formaction="{{ url_for('action_legacy_rt_log') }}" formmethod="get">
 {% endblock %}
 

ogcp/views.py

@@ -860,3 +860,15 @@ def action_legacy_log():
     else:
         return redirect(url_for('commands'))
 
+@app.route('/action/rt-log', methods=['GET'])
+@login_required
+def action_legacy_rt_log():
+    ips = parse_elements(request.args.to_dict())
+    if not validate_elements(ips, max_len=1):
+        return redirect(url_for('commands'))
+    ip = ips.pop()
+    scheme = "http://"
+    rt_log_path = "/cgi-bin/httpd-log.sh"
+    rt_log_url = scheme + ip + rt_log_path
+    return redirect(rt_log_url)
+