#Copyright (C) Joe Maimon 2002- All rights released except for attribution/#

#
#	versions of this and related can be found on www.jmaimon.com/sendmail 
/#

#########################################################################################################
#	Migrate Sendmail for NT users,passwords,mailbox spools to a unix-like sendmail setup			
#	use at your own risk, Proof-Of-Concept code.		
#
# This is written in Aestiva HTML/OS code. Really all it does is parse the sendmail for nt users file,
# which is a passwd style file, and generate a bash shell script or two.
#
# To rewrite it in bash shell script entirely should be fairly simple.			
#########################################################################################################
#	REQUIRES: 											
#On winnt Machine: Sendmail for NT 3.02, Aestiva HTML/OS 1.8+ runtime.(start.exe), FTP server for spool	
#files setup. ( See below to configure ncftpget statement						
#On Unix Machine: Redhat style useradd, userdel, passwd, ncftpget. Unix style chown, chgrp, mkdir	
#########################################################################################################
#	Run this script in the sendmail for nt installation directory root. You need to handle these	
# files manualy. virtusertable,access,relay-domains,sendmail.cw,aliases,access and so on				
#
#	Some things you may miss from Sendmail for NT (besides the web interface) are: buildcf and makevirt
#	Check out www.jmaimon.com/sendmail/scripts for stuff I use.
#													
#	Copy the resulting shell scripts to the unix machine and run the migrateion script. The undo	
# script is provided for convenience if it screws up. Might I suggest eyeballing the results before	
# running them?												
#########################################################################################################
#	CONFIGURABLES: Noted in comments through the script						
#	Include: New users home dir, New users GID, base UID to increment for new users			
#	file to be created, user creation statement, ncftpget download spool file statement		
#########################################################################################################
#	Security implications:	If cleartext password is unavailable (no APOP configured for user) the	
# password is migrated as is which is not MD5, just DES, you may change this lower down at the cost of 	
# having to reset the users password									
#	ALL USERNAMES ARE CONVERTED TO LOWERCASE. This is probaly what you want				
#	ALL users share the same GID.You may wish to change that lower down				
#########################################################################################################
#	Side effects: Log files in /tmp/success.log and /tmp/failure.log				
#	Creation of local users with home directories. No skeleton files				
#########################################################################################################
#	Testimonial:											
# I migrated my 600-800 userbase to RHL 7.1 Sendmail 8.12/Qpopper 4/Uw-Imap with this in one night	
# Actual execution time is under an hour with fast network for spool file transfer ( Bulk of work)									#
# Lost a couple passwords and had to deal with some {Lower|Upper}case issues. Thats it.			
#######################################################################################################/#


#The passwd style file that sendmail for NT uses/#
passwd.file="smusers.txt"
copy file=passwd.file ts=":" to passwd.contents /copy

counter.pwd=0

##################################################################################
#Some configurables here. Change the resulting users home dir to suit your setup #
################################################################################/#
scriptmove=
"#!/bin/bash
USERS_MAIL_HOME=/home/mail/
PATH=${PATH}:/usr/sbin:/sbin:.

rm -f /tmp/success.log
rm -f /tmp/failure.log

"
scriptdelete=
"#!/bin/bash
PATH=${PATH}:/usr/sbin:/sbin:.
"

for name=passwd.contents rownum=passwd.row do

User.Name=lower(passwd.contents[1,passwd.row])

#Put all users to skip here/#

If 
	User.Name = "root" or 
	User.Name = "Administrator" or 
	User.Name = "Mailer-Daemon" or 
	User.Name = "josephsc" or 
	User.Name = "test1" or
	User.Name = "cilka" or
	User.Name = "wwwmailer" or  
	User.Name = "mcordaro" or 
	User.Name = "mdangelo" or 
	User.Name = "pglikas" or
	User.Name = "" or
	User.Name = "Postmaster" 
Then
	continue
/If


counter.pwd=counter.pwd+1
display counter.pwd+':'+ascii(09)+User.Name+cr+lf /display

#debug
if counter.pwd=3 then break /if
end debug/#

########################################################################
#Deal with passwords not stored in cleartext. Port them as is(Not MD5) #
######################################################################/#
if passwd.contents[7,passwd.row]="*" or passwd.contents[7,passwd.row]="" then
	Temp.Crypt.Password='-p "'+passwd.contents[2,passwd.row]+'"'
else
	Temp.Crypt.Password=''
/if

####################################################
#Starting UID. Configure to match your environment #
##################################################/#
User.UID = counter.pwd+2500

scriptdelete=scriptdelete+lf+
"userdel -r "+User.Name


####################################################
# Users gid. Update here to match your environment #
##################################################################
# Update the below statement to reflect you user creation policy #
################################################################/#
scriptmove=scriptmove+lf+
'echo User: '+User.Name+lf+
'useradd '+User.Name+' -c "MAIL User - '+passwd.contents[5,passwd.row]+'" -d "${USERS_MAIL_HOME}'+User.Name+'" -g "mailusers" -n -M -u '+User.UID+' -s "/bin/false" '+Temp.Crypt.Password+' &&\'+lf+
'mkdir "${USERS_MAIL_HOME}'+User.Name+'"'+' &&\'+lf+
'chown '+User.Name+':mailusers "${USERS_MAIL_HOME}'+User.Name+'"'+' &&\'+lf

If Temp.Crypt.Password='' then
	scriptmove= scriptmove +

'echo '+passwd.contents[7,passwd.row]+' | passwd --stdin '+User.Name+' &&\'+lf

/if

scriptmove=scriptmove+
'echo '+User.Name+' >> /tmp/success.log || echo '+User.Name+' >> /tmp/failure.log'+lf+lf







/for

##################################################################
# NCFTP GET: Put the authentication information in the file -f   #
################################################################/#

scriptmove=scriptmove+
'



[ -f /tmp/undomigratepop3.sh ] || ( echo "#!/bin/bash" > /tmp/undomigratepop3.sh ; echo "PATH=${PATH}" >>/tmp/undomigratepop3.sh ; chmod +x /tmp/undomigratepop3.sh )

[ -f /tmp/success.log ] && ( for FILENAME in $(cat /tmp/success.log); do echo "userdel -r ${FILENAME}" >>/tmp/undomigratepop3.sh ; done )

echo '+"'rm $0 '"+'>>/tmp/undomigratepop3.sh 

[ -f /tmp/success.log ] && ( for FILENAME in $(cat /tmp/success.log); do ncftpget -f /ncftp-pop3-auth -a  /var/spool/mail /spool/${FILENAME} && chown ${FILENAME}:mail /var/spool/mail/${FILENAME} ; done )

'
copy scriptmove to file="migratepop3.sh" /copy
copy scriptdelete to file="migratepop3del.sh" /copy