Fixed obvois errors. It even had done couple of update calls

diff --git a/dyngo b/dyngo
old mode 100644 (file)
new mode 100755 (executable)
index ab21fde..dcfe779
--- a/dyngo
+++ b/dyngo
@@ -2,6 +2,7 @@
 import ipaddress, subprocess, sys, getopt,dbm
 from configparser import ConfigParser
 import urllib.request,urllib.parse
+import logging,os.path,time
 class DyndnsNetwork(object):
     """
     This class represents dynamic DNS server and network.
@@ -11,7 +12,7 @@ class DyndnsNetwork(object):
         self.hostname = config_section['hostname']
         self.network = ipaddress.ip_network(config_section['network'])
         self.server = config_section['server']
-        if user in config_section:
+        if 'user' in config_section:
             self.user=config_section["user"]
             self.password=config_section["password"]
 
@@ -28,7 +29,8 @@ class DyndnsNetwork(object):
         Raises HTTPError if something goes wrong
         """
         #construct opener
-        if hasattr(self,user):
+        logging.debug("Going to send message to %s",self.server)
+        if hasattr(self,'user'):
             password_mgr =urllib.request.HTTPPasswordMgrWithDefaultRealm()
             password_mgr.add_password(None,self.server,self.user,self.password)
             handler=urllib.request.HTTPBasicAuthHandler(password_mgr)
@@ -44,6 +46,7 @@ class DyndnsNetwork(object):
 
 def get_current_addresses():
     result=[]    
+    logging.debug("Acquire current IPs")
     for line in subprocess.run(['ip','-o','addr','show'],check=True,stdout=subprocess.PIPE).stdout.decode('utf-8').split("\n"):
         if not len(line): 
             continue
@@ -52,6 +55,7 @@ def get_current_addresses():
         if address.is_loopback or address.is_link_local:
             continue
         result.append(address)
+    logging.debug("Got following addresses: %s",repr(result))
     return result
 def check_for_update():
     addrlist=get_current_addresses()
@@ -64,30 +68,32 @@ def check_for_update():
                     old_addr=ipaddress.ip_address(database[name].decode("utf-8"))
                     if old_addr==a:
                         # Nothing changed go, to next net
+                        logging.debug("Address for net %s not changed",name)
                         break
                 # address changed
                 try:
+                     logging.info("Doing update for net %s with address %s",name, str(a))
                      net.nsupdate(a)
                      database[name]=str(a)
                 except urllib.error.HTTPError as e:
-                    pass
+                    logging.exception("Http error doing nsupdate code %s",e.code)
                 break     
         if not found:
+            logging.info("Address for net %s no more found",name)
             del data[name]
 
-            
-
-
 config=ConfigParser()
-config['dyngo']={'interval':'60','database':'/var/lib/dyngo/dyngo.db','ca':'/etc/ssl/certs'}
+config['dyngo']={'interval':'60','database':'/var/lib/dyngo/dyngo.db',
+                 'ca':'/etc/ssl/certs','loglevel':'WARNING'}
 options=dict(getopt.getopt(sys.argv,"f:")[0])
 if not '-f' in options:
     options["-f"]="/etc/dyngo.conf"
 if len(config.read(options["-f"]))!=1:
     print("Cannot read config %s"%options["-f"],file=sys.stderr)
     sys.exit(1)
-    
 conf=config['dyngo']
+logging.basicConfig(format="%(asctime)s %(message)s",
+      level=getattr(logging,conf['loglevel'].upper()))
 interval=int(conf['interval'])
 database=dbm.open(conf['database'],"c")
 https_params={}
@@ -102,13 +108,14 @@ networks={}
 for sect in config.sections():
     if sect == 'dyngo' or sect == 'DEFAULT':
         continue
+    logging.debug("Processing network %s",sect)    
     networks[sect]=DyndnsNetwork(config[sect])
 # Remove stale items from persistent database, which are no more
 # mentioned in the config file
-for i in set([x.decode("utf-8") for x in database.keys()])-set(network.keys()):
+for i in set([x.decode("utf-8") for x in database.keys()])-set(networks.keys()):
+    logging.info("Removing from persistent state network %s which is no more  in config",i)
     del database[i]
 
-
 while True:
     check_for_update()
     time.sleep(interval)