Display Tor hidden service configuration on Tor page.

Currently assumes that there is no more than 1 hidden service.

actions/tor

@@ -25,6 +25,7 @@ import argparse
 import subprocess
 
 SERVICE_CONFIG = '/etc/default/tor'
+TOR_CONFIG = '/etc/tor/torrc'
 
 
 def parse_arguments():
@@ -41,6 +42,9 @@ def parse_arguments():
     # Stop Tor and disable service
     subparsers.add_parser('stop', help='Stop Tor service')
 
+    # Get currently configured Tor hidden service
+    subparsers.add_parser('get-hs', help='Get hidden service')
+
     return parser.parse_args()
 
 
@@ -73,6 +77,26 @@ def subcommand_stop(_):
     subprocess.call(['service', 'tor', 'stop'])
 
 
+def subcommand_get_hs(_):
+    """Get currently configured Tor hidden service"""
+    hs_dir = ""
+    hs_ports = []
+
+    with open(TOR_CONFIG, 'r') as file:
+        lines = file.readlines()
+        for line in lines:
+            if line.startswith('HiddenServiceDir'):
+                hs_dir = line.split()[1]
+            elif line.startswith('HiddenServicePort'):
+                hs_ports.append(line.split()[1])
+
+    if hs_dir != "":
+        with open(hs_dir + 'hostname', 'r') as file:
+            hs_hostname = file.read().strip()
+
+        print hs_hostname + ' ' + ','.join(hs_ports)
+
+
 def set_tor_service(enable):
     """Enable/disable tor service; enable: boolean"""
     newline = "RUN_DAEMON=\"yes\"\n" if enable else "RUN_DAEMON=\"no\"\n"

plinth/modules/tor/templates/tor.html

@@ -30,6 +30,16 @@
 {% endif %}
 <br style='clear:both'>
 
+<p><h3>Hidden Service</h3>
+A hidden service will allow your FreedomBox to provide selected
+services (such as OwnCloud or Chat) without revealing its location.
+Here is the current configuration:
+<ul>
+  <li>Hostname: {{ tor_hs_hostname }}</li>
+  <li>Ports: {{ tor_hs_ports }}</li>
+</ul>
+</p>
+
 <p><h3>Bridge</h3>
 Your FreedomBox is configured as a Tor bridge with obfsproxy, so it
 can help circumvent censorship. If your FreedomBox is behind a router

plinth/modules/tor/tor.py

@@ -47,8 +47,19 @@ def index(request):
         except ValueError:
             continue
 
+    output = actions.superuser_run("tor", ["get-hs"])
+    if output == "":
+        tor_hs_hostname = "Not Configured"
+        tor_hs_ports = ""
+    else:
+        hs_info = output.split()
+        tor_hs_hostname = hs_info[0]
+        tor_hs_ports = hs_info[1]
+
     is_running = actions.superuser_run("tor", ["is-running"]).strip() == "yes"
     return TemplateResponse(request, 'tor.html',
                             {'title': _('Tor Control Panel'),
+                             'tor_hs_hostname': tor_hs_hostname,
+                             'tor_hs_ports': tor_hs_ports,
                              'tor_ports': tor_ports,
                              'is_running': is_running})