backend functions for mail account

- creating aliases works


git-svn-id: file:///home/www/usr01/svn/gnuviechadmin/gnuviech.info/gnuviechadmin/trunk@29 a67ec6bc-e5d5-0310-a910-815c51eb3124

backend/mailtools.py

@@ -0,0 +1,78 @@
+#! /usr/bin/env python
+
+import os, string
+
+USERPREFIX="usr"
+EXIMCONFDIR="etc/exim/"
+VIRTUALDOMDIR=EXIMCONFDIR+"virtual/"
+
+# if [ -n $USERPREFIX ]; then
+# 	USERPREFIX="usr"
+# fi
+
+# if [ $1 == "" ]; then
+# 	echo "give <UserNumber>p<pop3Account> as parameter"
+# 	exit
+# fi
+
+# NEWUSER="$USERPREFIX$1"
+# NEWHOME="/home/mail/$NEWUSER"
+# NEWPASS=$(apg -n 1 -a 1 -CL -m 8 -x 12)
+# echo $NEWHOME
+
+# adduser --home "$NEWHOME" --shell /bin/true --no-create-home --firstuid 20000 --ingroup poponly --disabled-password --disabled-login --gecos "Popuser $NEWUSER" $NEWUSER
+
+# mkdir -p "$NEWHOME"
+# chown -Rc $NEWUSER.poponly "$NEWHOME"
+# echo "${NEWUSER}:${NEWPASS}" | chpasswd
+
+# echo "Herzlich willkommen auf dem GNU-Viech" | mail -s "Willkommen auf dem GNU-Viech" ${NEWUSER}
+# echo added new pop3 user $NEWUSER with password $NEWPASS
+
+def readaliasfile(domainname):
+    """reads the aliasfile for the given domain and returns a dictionary
+    object with the aliases
+    """
+    aliases={}
+    if (os.access(VIRTUALDOMDIR, os.R_OK)):
+        try:
+            aliasfile=open(VIRTUALDOMDIR+domainname, 'r')
+            for line in aliasfile.readlines():
+                keyvals = string.split(line,":",1)
+                aliases[keyvals[0]]=keyvals[1].strip()
+            aliasfile.close()
+        except IOError:
+            print "couldn't read the aliasfile for "+domainname+"."
+    else:
+        print "couldn't read from "+VIRTUALDOMDIR+"."
+    return aliases
+
+def writealiasfile(domainname, aliases):
+    """writes the aliasfile for the given domain with the aliases defined
+    in the dictionary object aliases
+    """
+    if (os.access(VIRTUALDOMDIR, os.W_OK)):
+        try:
+            aliasfile=open(VIRTUALDOMDIR+domainname, 'w')
+            for key in aliases.keys():
+                aliasfile.write(key+":"+aliases[key]+"\n")
+            aliasfile.close()
+        except IOError:
+            print "writing to aliasfile failed."
+    else:
+        print "no write access to directory "+VIRTUALDOMDIR+"."
+
+def createpopaccount(domainname, sysuser):
+    """Creates a pop3/imap account for given domain and system user"""
+    "addpopuser sysusrp<num>"
+
+def setmailalias(domainname, alias, target):
+    """sets a mail alias for given domain which directs the MTA to the
+    given target
+    """
+    aliases=readaliasfile(domainname)
+    aliases[alias]=target
+    writealiasfile(domainname, aliases)
+
+createpopaccount("test.de", "usr03")
+setmailalias("test.de", "doedel", "horst@dittberner.info")