add fritzbox cpu usage plugin

fritzbox_cpu_usage.py

@@ -0,0 +1,68 @@
+#!/usr/bin/env python
+"""
+  fritzbox_cpu_usage - A munin plugin for Linux to monitor AVM Fritzbox
+  Copyright (C) 2015 Christian Stade-Schuldt
+  Author: Christian Stade-Schuldt
+  Like Munin, this plugin is licensed under the GNU GPL v2 license
+  http://www.opensource.org/licenses/GPL-2.0
+  Add the following section to your munin-node's plugin configuration:
+
+  [fritzbox_*]
+  env.fritzbox_ip [ip address of the fritzbox]
+  env.fritzbox_password [fritzbox password]
+  
+  This plugin supports the following munin configuration parameters:
+  #%# family=auto contrib
+  #%# capabilities=autoconf
+"""
+
+import hashlib
+import httplib
+import os
+import re
+import sys
+import fritzbox_helper as fh
+from io import StringIO, BytesIO
+
+PAGE = '/system/ecostat.lua'
+pattern = re.compile('.*\/(StatCPU)".*=.*"(.*?)"')
+
+
+def get_cpu_usage():
+    """get the current cpu usage"""
+    
+    server = os.environ['fritzbox_ip']
+    password = os.environ['fritzbox_password']
+    
+    sid = fh.get_sid(server, password)
+    data = fh.get_page(server, sid, PAGE)
+    
+    m = re.search(pattern, data)
+    if m:
+        print 'cpu.value %d' %(int(m.group(2).split(',')[0]))
+
+
+def print_config():
+    print "graph_title AVM Fritz!Box CPU usage"
+    print "graph_vlabel %"
+    print "graph_category system"
+    print "graph_order cpu"
+    print "graph_scale no"
+    print "cpu.label system"
+    print "cpu.type DERIVE"
+    print "cpu.graph AREA"
+    print "cpu.min 0"
+    print "cpu.info Fritzbox CPU usage"
+
+
+if __name__ == '__main__':
+    if len(sys.argv) == 2 and sys.argv[1] == 'config':
+        print_config()
+    elif len(sys.argv) == 2 and sys.argv[1] == 'autoconf':
+        print 'yes'
+    elif len(sys.argv) == 1 or len(sys.argv) == 2 and sys.argv[1] == 'fetch':
+    # Some docs say it'll be called with fetch, some say no arg at all
+        try:
+            get_cpu_usage()
+        except:
+            sys.exit("Couldn't retrieve fritzbox cpu usage")