Fixed embarrasing global variabel mess

TODO

@@ -1,8 +1,10 @@
 TODO for dnsupdate
 
-- Check if address needs update before sending data
-- Add a config-file for hostname, domain and password
-  All options should be configurable, ttl and force as well.
+- Check if address needs update before sending data and create a force 
+  update option
+- Add a config-file for hostname, domain and password. Option to select
+
+  All options should be configurable, ttl and force as well. 
 - Have options to delete a server as well as add/update
 - Integrate the relevant dnspython modules
 - Add a GUI
@@ -10,9 +12,11 @@ TODO for dnsupdate
 
 
 Done:
+- Fix the global variabel mess!!
 - Add command line parameter prefixes
+  -c alternative config file *
   -d domain
-  -f force
+  -f force * 
   -h help
   -i ipadress
   -k keyname

dnsupdate.py

@@ -1,18 +1,12 @@
-import dns.query
-import dns.tsigkeyring
-import dns.update
-from optparse import OptionParser
-import re
-import string
-import sys
-
 # dnsupdate.py
 # Updates a dynamic dns-record using a TSIG key.
 
-domain = "lubcke.se"
-keyname = "lubcke.se."
-keysecret = "ZGhNJ05b8ThmHOXhJvkvMw=="
-ttl = 60
+class dnsvalues:
+  def __init__(self):
+    self.domain = "lubcke.se"
+    self.keyname = "lubcke.se."
+    self.keysecret = "ZGhNJ05b8ThmHOXhJvkvMw=="
+    self.ttl = 60
 
 def get_ipaddress():
   # Connects to the dns server to determine which ip address
@@ -24,6 +18,8 @@ def get_ipaddress():
   return ip
 
 def main():
+  from optparse import OptionParser
+  import sys
   # Define option parameters
   usage = "usage: %prog [-n] hostname [-i] ip adress [OPTIONS]"
   parser = OptionParser(usage)
@@ -32,7 +28,7 @@ def main():
                     help="Name of the domain to update")
   parser.add_option("-i", "--ipaddress", 
                     type="string",
-                    help="IP-address of the host")
+                    help="IP-address of the host [auto detected]")
   parser.add_option("-k", "--keyname", 
                     type="string",
                     help="Name of the TSIG key")
@@ -47,62 +43,64 @@ def main():
                     help="TTL in seconds")
   (options, args) = parser.parse_args()
   
-
-  global domain, ipaddress, keyname, keysecret, ttl
-
-  if options.domain:
-    domain = options.domain
   if options.ipaddress:
-    ipaddress = options.ipaddress
+    msg.ipaddress = options.ipaddress
   else:
-    ipaddress = get_ipaddress()
+    msg.ipaddress = get_ipaddress()
+  if options.domain:
+    msg.domain = options.domain
   if options.keyname:
-    keyname = options.keyname
+    msg.keyname = options.keyname
   if options.password:
-    keysecret = options.password
+    msg.keysecret = options.password
   if options.ttl:
-    ttl = options.ttl
+    msg.ttl = options.ttl
   
   if not options.name:
     print "A hostname is required for operation.\nEnter '%s -h' for usage information" % sys.argv[0]
     return 
   else:
-    global hostname
-    hostname = options.name
+    msg.hostname = options.name
 
   update()
 
 
 def update():
+  import dns.query
+  import dns.tsigkeyring
+  import dns.update
+  import re
+  import string
   # The update function connects to the dns server
   
   # Sanity check incoming data
-  global hostname, ipaddress, ttl
-  hostname = string.replace(hostname, "."+domain, '')
-  if not re.search('^[12]?[0-9]?[0-9](\.[12]?[0-9]?[0-9]){3}$', ipaddress):
-    print "Invalid ip address '%s'" % ipaddress
+  #global hostname, ipaddress, ttl
+  msg.hostname = string.replace(msg.hostname, "."+msg.domain, '')
+  if not re.search('^[12]?[0-9]?[0-9](\.[12]?[0-9]?[0-9]){3}$', msg.ipaddress):
+    print "Invalid ip address '%s'" % msg.ipaddress
     return
   
 
   # The name of the key and the secret
   keyring = dns.tsigkeyring.from_text({
-      keyname: keysecret
+      msg.keyname: msg.keysecret
   })
 
   # dns.update.Update(name of domain, keyring, keyname)
-  update = dns.update.Update(domain, keyring=keyring, keyname=keyname)
+  update = dns.update.Update(msg.domain, keyring=keyring, keyname=msg.keyname)
 
   # update.replace(hostname, ttl, record-type, new ip)
-  update.replace(hostname, ttl, 'a', ipaddress)
+  update.replace(msg.hostname, msg.ttl, 'a', msg.ipaddress)
 
   # doit, servername
   response = dns.query.tcp(update, 'nic.wahlberg.se')
   
   # Verify response
   if response.rcode() == 0:
-    print "Host '%s.%s' has been added with ip address %s" % (hostname, domain, ipaddress)
+    print "Host '%s.%s' has been added with ip address %s" % (msg.hostname, msg.domain, msg.ipaddress)
   else:
     print "An error has occurred, the server returned:\n%s" % response
 
 if __name__=="__main__":
+  msg = dnsvalues()
   main()