refactor diag_routes.php

src/opnsense/scripts/routes/show_routes.py

+#!/usr/local/bin/python2.7
+
+"""
+    Copyright (c) 2016 Ad Schellevis
+    All rights reserved.
+
+    Redistribution and use in source and binary forms, with or without
+    modification, are permitted provided that the following conditions are met:
+
+    1. Redistributions of source code must retain the above copyright notice,
+     this list of conditions and the following disclaimer.
+
+    2. Redistributions in binary form must reproduce the above copyright
+     notice, this list of conditions and the following disclaimer in the
+     documentation and/or other materials provided with the distribution.
+
+    THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
+    INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
+    AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+    AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
+    OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+    SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+    INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+    CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+    ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+    POSSIBILITY OF SUCH DAMAGE.
+
+    --------------------------------------------------------------------------------------
+    returns the system routing table
+"""
+import tempfile
+import subprocess
+import os
+import sys
+import ujson
+
+if __name__ == '__main__':
+    result = []
+    fieldnames=[]
+    with tempfile.NamedTemporaryFile() as output_stream:
+        if '-n' in sys.argv:
+            resolv = '-n'
+        else:
+            resolv = ''
+        subprocess.call(['/usr/bin/netstat', '-rW', resolv], stdout=output_stream, stderr=open(os.devnull, 'wb'))
+        output_stream.seek(0)
+        current_proto = ""
+        for line in output_stream.read().strip().split('\n'):
+            fields = line.split()
+            if len(fields) == 0:
+                continue
+            elif len(fields) == 1 and fields[0] == 'Internet:':
+                current_proto = 'ipv4'
+            elif len(fields) == 1 and  fields[0] == 'Internet6:':
+                current_proto = 'ipv6'
+            elif len(fields) > 2 and fields[0] == 'Destination' and fields[1] == 'Gateway':
+                fieldnames = map(lambda x : x.lower(), fields)
+            elif len(fields) > 2:
+                record = {'proto': current_proto}
+                for fieldid in range(len(fields)):
+                    if len(fieldnames) > fieldid:
+                        record[fieldnames[fieldid]] = fields[fieldid]
+                # space out missing fields
+                for fieldname in fieldnames:
+                    if fieldname not in record:
+                        record[fieldname] = ""
+                result.append(record)
+
+    # handle command line argument (type selection)
+    if len(sys.argv) > 1 and 'json' in sys.argv:
+        print(ujson.dumps(result))
+    else:
+        # output plain
+        print ('\t\t'.join(fieldnames))
+        frmt = "%(proto)s\t"
+        for fieldname in fieldnames:
+            frmt = frmt + "%("+fieldname+")s\t"
+        for record in result:
+            print (frmt%record)

src/opnsense/service/conf/actions.d/actions_system.conf

@@ -3,3 +3,10 @@ command:/usr/local/opnsense/scripts/systemhealth/activity.py
 parameters:%s
 type:script_output
 message:show system activity
+
+[routes.list]
+command:/usr/local/opnsense/scripts/routes/show_routes.py
+parameters:%s %s
+type:script_output
+message:show system routing table
+